Document and Entity Information
Document and Entity Information - USD ($) $ / shares in Units, $ in Billions | 12 Months Ended | |||
Dec. 31, 2020 | Jan. 28, 2021 | Jun. 30, 2020 | Dec. 31, 2019 | |
Entity Information [Line Items] | ||||
Document Type | 10-K | |||
Document Annual Report | true | |||
Document Period End Date | Dec. 31, 2020 | |||
Current Fiscal Year End Date | --12-31 | |||
Document Fiscal Year Focus | 2020 | |||
Document Transition Report | false | |||
Entity File Number | 001-13221 | |||
Entity Registrant Name | CULLEN/FROST BANKERS, INC. | |||
Entity Incorporation, State or Country Code | TX | |||
Entity Tax Identification Number | 74-1751768 | |||
Entity Address, Address Line One | 111 W. Houston Street, | |||
Entity Address, City or Town | San Antonio, | |||
Entity Address, State or Province | TX | |||
Entity Address, Postal Zip Code | 78205 | |||
City Area Code | (210) | |||
Local Phone Number | 220-4011 | |||
Entity Well-known Seasoned Issuer | Yes | |||
Entity Voluntary Filers | No | |||
Entity Current Reporting Status | Yes | |||
Entity Interactive Data Current | Yes | |||
Entity Filer Category | Large Accelerated Filer | |||
Entity Small Business | false | |||
Entity Emerging Growth Company | false | |||
ICFR Auditor Attestation Flag | true | |||
Entity Shell Company | false | |||
Entity Public Float | $ 4.5 | |||
Entity Common Stock, Shares Outstanding | 63,165,980 | |||
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01 | ||
Entity Central Index Key | 0000039263 | |||
Amendment Flag | false | |||
Document Fiscal Period Focus | FY | |||
Common Stock [Member] | NEW YORK STOCK EXCHANGE, INC. [Member] | ||||
Entity Information [Line Items] | ||||
Title of 12(b) Security | Common Stock, $.01 Par Value | |||
Trading Symbol | CFR | |||
Security Exchange Name | NYSE | |||
Series B Preferred Stock [Member] | NEW YORK STOCK EXCHANGE, INC. [Member] | ||||
Entity Information [Line Items] | ||||
Title of 12(b) Security | Depositary Shares, each representing a 1/40th interest in a share of 4.450% Non-Cumulative Perpetual Preferred Stock, Series B | |||
Trading Symbol | CFR.PrB | |||
Security Exchange Name | NYSE |
Consolidated Balance Sheets
Consolidated Balance Sheets - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Assets: | ||
Cash and due from banks | $ 529,454 | $ 581,857 |
Interest-bearing deposits | 9,758,624 | 2,849,950 |
Federal funds sold and resell agreements | 775 | 356,374 |
Total cash and cash equivalents | 10,288,853 | 3,788,181 |
Securities held to maturity, net of allowance for credit losses of $160 in 2020 | 1,945,673 | 2,030,005 |
Securities available for sale, at estimated fair value | 10,437,565 | 11,269,591 |
Trading account securities | 24,456 | 24,298 |
Loans, net of unearned discounts | 17,481,309 | 14,750,332 |
Less: Allowance for credit losses on loans | (263,177) | (132,167) |
Net loans | 17,218,132 | 14,618,165 |
Premises and equipment, net | 1,045,578 | 1,011,947 |
Goodwill | 654,952 | 654,952 |
Other intangible assets, net | 1,563 | 2,481 |
Cash surrender value of life insurance policies | 189,984 | 187,156 |
Accrued interest receivable and other assets | 584,561 | 440,652 |
Total assets | 42,391,317 | 34,027,428 |
Liabilities: | ||
Non-interest-bearing demand deposits | 15,117,051 | 10,873,629 |
Interest-bearing deposits | 19,898,710 | 16,765,935 |
Total deposits | 35,015,761 | 27,639,564 |
Federal funds purchased and repurchase agreements | 2,116,997 | 1,695,342 |
Junior subordinated deferrable interest debentures, net of unamortized issuance costs | 136,357 | 136,299 |
Subordinated notes, net of unamortized issuance costs | 99,021 | 98,865 |
Accrued interest payable and other liabilities | 730,165 | 545,690 |
Total liabilities | 38,098,301 | 30,115,760 |
Shareholders’ Equity: | ||
Preferred stock, par value $0.01 per share; 10,000,000 shares authorized; 150,000 Series B shares ($1,000 liquidation preference) issued in 2020 and 6,000,000 Series A shares ($25 liquidation preference) issued in 2019 | 145,452 | 144,486 |
Common stock, par value $0.01 per share; 210,000,000 shares authorized; 64,236,306 shares issued in both 2020 and 2019 | 642 | 642 |
Additional paid-in capital | 997,168 | 983,250 |
Retained earnings | 2,750,723 | 2,667,534 |
Accumulated other comprehensive income, net of tax | 512,970 | 267,370 |
Treasury stock, at cost; 1,225,066 shares in 2020 and 1,567,302 in 2019. | (113,939) | (151,614) |
Total shareholders’ equity | 4,293,016 | 3,911,668 |
Total liabilities and shareholders’ equity | $ 42,391,317 | $ 34,027,428 |
Consolidated Balance Sheets (Pa
Consolidated Balance Sheets (Parenthetical) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ (160,000) | $ 0 |
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01 |
Common Stock, Shares Authorized | 210,000,000 | 210,000,000 |
Common Stock, Shares, Issued | 64,236,306 | 64,236,306 |
Treasury Stock, Shares | 1,225,066 | 1,567,302 |
Series A Preferred Stock [Member] | ||
Preferred Stock, Par or Stated Value Per Share | $ 0.01 | |
Preferred Stock, Shares Authorized | 10,000,000 | |
Preferred Stock, Shares Issued | 6,000,000 | |
Preferred Stock, Liquidation Preference, Value | $ 25 | |
Series B Preferred Stock [Member] | ||
Preferred Stock, Par or Stated Value Per Share | $ 0.01 | |
Preferred Stock, Shares Authorized | 10,000,000 | |
Preferred Stock, Shares Issued | 150,000 | |
Preferred Stock, Liquidation Preference, Value | $ 1,000 |
Consolidated Statements of Inco
Consolidated Statements of Income - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Interest income: | |||
Loans, including fees | $ 680,064 | $ 741,747 | $ 669,002 |
Securities: | |||
Taxable | 93,569 | 117,082 | 86,370 |
Tax-exempt | 233,614 | 233,842 | 233,358 |
Interest-bearing deposits | 12,893 | 35,590 | 56,968 |
Federal funds sold and resell agreements | 895 | 5,524 | 5,500 |
Total interest income | 1,021,035 | 1,133,785 | 1,051,198 |
Interest expense: | |||
Deposits | 32,018 | 99,742 | 75,337 |
Federal funds purchased and repurchase agreements | 4,482 | 19,675 | 8,021 |
Junior subordinated deferrable interest debentures | 3,560 | 5,706 | 5,291 |
Subordinated notes | 4,656 | 4,657 | 4,657 |
Federal Home Loan Bank advances | 318 | 0 | 0 |
Total interest expense | 45,034 | 129,780 | 93,306 |
Net interest income | 976,001 | 1,004,005 | 957,892 |
Credit loss expense | 241,230 | 33,759 | 21,685 |
Net interest income after credit loss expense | 734,771 | 970,246 | 936,207 |
Non-interest income: | |||
Trust and investment management fees | 129,272 | 126,722 | 119,391 |
Service charges on deposit accounts | 80,873 | 88,983 | 85,186 |
Insurance commissions and fees | 50,313 | 52,345 | 48,967 |
Interchange and debit card transaction fees | 13,470 | 14,873 | 13,877 |
Other charges, commissions and fees | 34,825 | 37,123 | 37,231 |
Net gain (loss) on securities transactions | 108,989 | 293 | (156) |
Other | 47,712 | 43,563 | 46,790 |
Total non-interest income | 465,454 | 363,902 | 351,286 |
Non-interest expense: | |||
Salaries and wages | 387,328 | 375,029 | 350,312 |
Employee benefits | 75,676 | 86,230 | 77,323 |
Net occupancy | 102,938 | 89,466 | 76,788 |
Technology, furniture and equipment | 105,232 | 91,995 | 83,102 |
Deposit insurance | 10,502 | 10,126 | 16,397 |
Intangible amortization | 918 | 1,168 | 1,424 |
Other | 166,310 | 180,665 | 173,466 |
Total non-interest expense | 848,904 | 834,679 | 778,812 |
Income before income taxes | 351,321 | 499,469 | 508,681 |
Income taxes | 20,170 | 55,870 | 53,763 |
Net income | 331,151 | 443,599 | 454,918 |
Preferred stock dividends | 2,016 | 8,063 | 8,063 |
Redemption of preferred stock | 5,514 | 0 | 0 |
Net income available to common shareholders | $ 323,621 | $ 435,536 | $ 446,855 |
Earnings per common share: | |||
Basic (in dollars per share) | $ 5.11 | $ 6.89 | $ 6.97 |
Diluted (in dollars per share) | $ 5.10 | $ 6.84 | $ 6.90 |
Consolidated Statements of Comp
Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Net income | $ 331,151 | $ 443,599 | $ 454,918 |
Other comprehensive income (loss), before tax: | |||
Change in net unrealized gain/loss on securities available for sale during the period | 427,331 | 418,556 | (182,340) |
Change in net unrealized gain on securities transferred to held-to-maturity | (1,256) | (1,292) | (8,818) |
Reclassification adjustment for net (gains) losses included in net income | (108,989) | (293) | 156 |
Total securities available for sale and transferred securities before tax amount | 317,086 | 416,971 | (191,002) |
Defined-benefit post-retirement benefit plans: | |||
Change in the net actuarial gain/loss before tax amount | (11,518) | (3,644) | (7,225) |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) before tax amount | 5,319 | 5,623 | 5,002 |
Total defined-benefit post-retirement benefit plans | (6,199) | 1,979 | (2,223) |
Reclassification adjustments for (gains) losses included in net income: | |||
Other comprehensive income (loss), before tax | 310,887 | 418,950 | (193,225) |
Deferred tax expense (benefit) | 65,287 | 87,980 | (40,578) |
Other comprehensive income (loss), net of tax | 245,600 | 330,970 | (152,647) |
Comprehensive income | $ 576,751 | $ 774,569 | $ 302,271 |
Consolidated Statement of Chang
Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Thousands | Total | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss), Net of Tax [Member] | Treasury Stock [Member] |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||||
Cumulative effect of accounting change | $ (2,285) | $ (2,285) | |||||
Adjusted beginning balance | 3,295,578 | $ 144,486 | $ 642 | $ 953,361 | 2,184,784 | $ 79,512 | $ (67,207) |
Balance at Dec. 31, 2017 | 3,297,863 | 144,486 | 642 | 953,361 | 2,187,069 | 79,512 | (67,207) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||||
Net income | 454,918 | 454,918 | |||||
Other comprehensive income, net of tax | (152,647) | (152,647) | |||||
Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act | (9,535) | 9,535 | |||||
Proceeds from stock option exercises/stock unit conversions (408,563 shares, 399,224 shares, and 548,238 shares during 2020, 2019, and 2018, respectively) | 31,647 | (16,653) | 48,300 | ||||
Stock-based compensation expense recognized in earnings | 13,943 | 13,943 | |||||
Purchase of treasury stock (206,951 shares, 716,062 shares, and 1,037,982 shares during 2020, 2019, and 2018, respectively) | (101,010) | (101,010) | |||||
Treasury stock issued to the 401(k) stock purchase plan (140,264 shares) | 0 | ||||||
Cash dividends paid on preferred stock (approximately $0.34 per share in 2020 and $1.34 per share in 2019 and 2018) | (8,063) | (8,063) | |||||
Cash dividends – common stock ($2.85 per share, $2.80 per share, and $2.58 per share in 2020, 2019, and 2018, respectively) | (165,449) | (165,449) | |||||
Balance at Dec. 31, 2018 | 3,368,917 | 144,486 | 642 | 967,304 | 2,440,002 | (63,600) | (119,917) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||||
Cumulative effect of accounting change | (14,672) | (14,672) | |||||
Adjusted beginning balance | 3,354,245 | 144,486 | 642 | 967,304 | 2,425,330 | (63,600) | (119,917) |
Net income | 443,599 | 443,599 | |||||
Other comprehensive income, net of tax | 330,970 | 330,970 | |||||
Proceeds from stock option exercises/stock unit conversions (408,563 shares, 399,224 shares, and 548,238 shares during 2020, 2019, and 2018, respectively) | 20,770 | (16,326) | 37,096 | ||||
Stock-based compensation expense recognized in earnings | 15,946 | 15,946 | |||||
Purchase of treasury stock (206,951 shares, 716,062 shares, and 1,037,982 shares during 2020, 2019, and 2018, respectively) | (68,793) | (68,793) | |||||
Treasury stock issued to the 401(k) stock purchase plan (140,264 shares) | 0 | ||||||
Cash dividends paid on preferred stock (approximately $0.34 per share in 2020 and $1.34 per share in 2019 and 2018) | (8,063) | (8,063) | |||||
Cash dividends – common stock ($2.85 per share, $2.80 per share, and $2.58 per share in 2020, 2019, and 2018, respectively) | (177,006) | (177,006) | |||||
Balance at Dec. 31, 2019 | 3,911,668 | 144,486 | 642 | 983,250 | 2,667,534 | 267,370 | (151,614) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||||
Cumulative effect of accounting change | (29,252) | (29,252) | |||||
Adjusted beginning balance | 3,882,416 | 144,486 | 642 | 983,250 | 2,638,282 | 267,370 | (151,614) |
Net income | 331,151 | 331,151 | |||||
Other comprehensive income, net of tax | 245,600 | 245,600 | |||||
Proceeds from stock option exercises/stock unit conversions (408,563 shares, 399,224 shares, and 548,238 shares during 2020, 2019, and 2018, respectively) | 12,557 | (27,214) | 39,771 | ||||
Stock-based compensation expense recognized in earnings | 13,918 | 13,918 | |||||
Redemption of series A preferred stock (6,000,000 shares) | (150,000) | (144,486) | (5,514) | ||||
Issuance of series B preferred stock (150,000 shares) | 145,452 | 145,452 | |||||
Purchase of treasury stock (206,951 shares, 716,062 shares, and 1,037,982 shares during 2020, 2019, and 2018, respectively) | (15,785) | (15,785) | |||||
Treasury stock issued to the 401(k) stock purchase plan (140,264 shares) | 10,307 | (3,382) | 13,689 | ||||
Cash dividends paid on preferred stock (approximately $0.34 per share in 2020 and $1.34 per share in 2019 and 2018) | (2,016) | (2,016) | |||||
Cash dividends – common stock ($2.85 per share, $2.80 per share, and $2.58 per share in 2020, 2019, and 2018, respectively) | (180,584) | (180,584) | |||||
Balance at Dec. 31, 2020 | $ 4,293,016 | $ 145,452 | $ 642 | $ 997,168 | $ 2,750,723 | $ 512,970 | $ (113,939) |
Consolidated Statement of Cha_2
Consolidated Statement of Changes in Shareholders' Equity (Parenthetical) - $ / shares | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Stock option exercises/deferred stock unit conversions, shares | 408,563 | 399,224 | 548,238 |
Stock Redeemed or Called During Period, Shares | 6,000,000 | ||
Stock Issued During Period, Shares, New Issues | 150,000 | ||
Treasury Stock, Shares, Acquired | 206,951 | 716,062 | 1,037,982 |
Stock Issued During Period, Shares, Treasury Stock Reissued | 140,264 | ||
Preferred Stock, Dividends Per Share, Declared | $ 0.34 | $ 1.34 | $ 1.34 |
Common Stock, Dividends, Per Share, Cash Paid | $ 2.85 | $ 2.80 | $ 2.58 |
Consolidated Statements of Cash
Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Operating Activities: | |||
Net income | $ 331,151 | $ 443,599 | $ 454,918 |
Adjustments to reconcile net income to net cash from operating activities: | |||
Credit loss expense | 241,230 | 33,759 | 21,685 |
Deferred tax expense (benefit) | (15,832) | 7,614 | 52,923 |
Accretion of loan discounts | (15,692) | (15,197) | (14,341) |
Securities premium amortization (discount accretion), net | 123,785 | 115,558 | 100,528 |
Net (gain) loss on securities transactions | (108,989) | (293) | 156 |
Depreciation and amortization | 64,370 | 54,091 | 50,172 |
Net (gain) loss on sale/write-down of assets/foreclosed assets | 524 | (5,712) | (5,272) |
Stock-based compensation | 13,918 | 15,946 | 13,943 |
Net tax benefit from stock-based compensation | 852 | 2,447 | 3,865 |
Earnings on life insurance policies | (3,731) | (3,683) | (3,380) |
Net change in: | |||
Trading account securities | (158) | (212) | (2,658) |
Lease right-of-use asset | 23,933 | 20,124 | 0 |
Accrued interest receivable and other assets | (158,264) | (15,570) | (85,898) |
Accrued interest payable and other liabilities | 27,146 | (18,381) | (24,253) |
Net cash provided by (used in) operating activities | 524,243 | 634,090 | 562,388 |
Investing Activities: | |||
Securities held to maturity: Purchases | (1,500) | (649,326) | (1,500) |
Securities held to maturity: Maturities, calls and principal repayments | 63,577 | 81,762 | 300,632 |
Securities available for sale: | |||
Purchases | (20,841,622) | (23,306,694) | (18,191,057) |
Sales | 1,162,352 | 18,660,147 | 16,806,062 |
Maturities, calls and principal repayments | 20,893,464 | 4,694,927 | 221,906 |
Proceeds from sale of loans | 37,535 | 24,036 | 21,318 |
Net change in loans | (2,856,395) | (693,587) | (1,008,789) |
Benefits received on life insurance policies | 903 | 0 | 384 |
Proceeds from sales of premises and equipment | 5,988 | 8,038 | 13,628 |
Purchases of premises and equipment | (95,422) | (206,716) | (79,270) |
Proceeds from sales of repossessed properties | 73 | 663 | 3,366 |
Net cash provided by (used in) investing activities | (1,631,047) | (1,386,750) | (1,913,320) |
Financing Activities: | |||
Net change in deposits | 7,376,197 | 490,360 | 276,815 |
Net change in short-term borrowings | 421,655 | 327,794 | 219,724 |
Proceeds from Federal Home Loan Bank advances | 1,250,000 | 0 | 0 |
Principal payments on Federal Home Loan Bank advances | (1,250,000) | 0 | 0 |
Redemption of Series A preferred stock | (150,000) | 0 | 0 |
Proceeds from issuance of Series B preferred stock | 145,452 | 0 | 0 |
Proceeds from stock option exercises | 12,557 | 20,770 | 31,647 |
Purchase of treasury stock | (15,785) | (68,793) | (101,010) |
Cash dividends paid on preferred stock | (2,016) | (8,063) | (8,063) |
Cash dividends paid on common stock | (180,584) | (177,006) | (165,449) |
Net cash provided by (used in) financing activities | 7,607,476 | 585,062 | 253,664 |
Net change in cash and cash equivalents | 6,500,672 | (167,598) | (1,097,268) |
Cash and cash equivalents at beginning of year | 3,788,181 | 3,955,779 | 5,053,047 |
Cash and cash equivalents at end of year | $ 10,288,853 | $ 3,788,181 | $ 3,955,779 |
Summary of Significant Accounti
Summary of Significant Accounting Policies | 12 Months Ended |
Dec. 31, 2020 | |
Accounting Policies [Abstract] | |
Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Nature of Operations . Cullen/Frost Bankers, Inc. (“Cullen/Frost”) is a financial holding company and a bank holding company headquartered in San Antonio, Texas that provides, through its subsidiaries, a broad array of products and services throughout numerous Texas markets. The terms “Cullen/Frost,” “the Corporation,” “we,” “us” and “our” mean Cullen/Frost Bankers, Inc. and its subsidiaries, when appropriate. In addition to general commercial and consumer banking, other products and services offered include trust and investment management, insurance, brokerage, mutual funds, leasing, treasury management, capital markets advisory and item processing. Basis of Presentation. The consolidated financial statements include the accounts of Cullen/Frost and all other entities in which Cullen/Frost has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation. The accounting and financial reporting policies we follow conform, in all material respects, to accounting principles generally accepted in the United States and to general practices within the financial services industry. We determine whether we have a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity (“VIE”) under accounting principles generally accepted in the United States. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity’s activities. We consolidate voting interest entities in which we have all, or at least a majority of, the voting interest. As defined in applicable accounting standards, VIEs are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when an enterprise has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The enterprise with a controlling financial interest, known as the primary beneficiary, consolidates the VIE. Our wholly owned subsidiaries Cullen/Frost Capital Trust II and WNB Capital Trust I are VIEs for which we are not the primary beneficiary. Accordingly, the accounts of these trusts are not included in our consolidated financial statements. Acquisitions are accounted for using the purchase method with the operating results of the acquired companies included with our results of operations since their respective dates of acquisition. We have evaluated subsequent events for potential recognition and/or disclosure through the date these consolidated financial statements were issued. Use of Estimates . The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The allowance for credit losses on loans and off-balance-sheet credit exposures, the fair values of financial instruments and the status of contingencies are particularly subject to change. Concentrations and Restrictions on Cash and Cash Equivalents . We maintain deposits with other financial institutions in amounts that exceed federal deposit insurance coverage. Furthermore, federal funds sold are essentially uncollateralized loans to other financial institutions. Management regularly evaluates the credit risk associated with the counterparties to these transactions and believes that we are not exposed to any significant credit risks on cash and cash equivalents. We were required to have $42.0 million and $918.0 million of cash on hand or on deposit with the Federal Reserve Bank to meet regulatory reserve and clearing requirements at December 31, 2020 and 2019. Additionally, as of December 31, 2020 and 2019, we had $74.0 million and $37.5 million in cash collateral on deposit with other financial institution counterparties to interest rate swap transactions. Cash Flow Reporting . Cash and cash equivalents include cash, deposits with other financial institutions that have an initial maturity of less than 90 days when acquired by us, federal funds sold and resell agreements. Net cash flows are reported for loans, deposit transactions and short-term borrowings. Additional cash flow information was as follows: Year Ended December 31, 2020 2019 2018 Cash paid for interest $ 49,300 $ 124,781 $ 89,270 Cash paid for income tax 44,140 45,352 5,112 Significant non-cash transactions: Transfer of securities from available for sale to held to maturity — 377,812 — Unsettled securities transactions 57,783 — 330 Loans foreclosed and transferred to other real estate owned and foreclosed assets 140 1,348 2,899 Loans to facilitate the sale of other real estate owned — 847 — Right-of-use lease assets obtained in exchange for lessee operating lease liabilities 18,284 319,286 — Treasury stock issued to 401(k) stock purchase plan 10,307 — — Repurchase/Resell Agreements. We purchase certain securities under agreements to resell. The amounts advanced under these agreements represent short-term loans and are reflected as assets in the accompanying consolidated balance sheets. The securities underlying these agreements are book-entry securities. We also sell certain securities under agreements to repurchase. The agreements are treated as collateralized financing transactions and the obligations to repurchase securities sold are reflected as a liability in the accompanying consolidated balance sheets. The dollar amount of the securities underlying the agreements remains in the asset accounts. Securities. Securities are classified as held to maturity and carried at amortized cost when management has the positive intent and ability to hold them until maturity. Securities to be held for indefinite periods of time are classified as available for sale and carried at fair value, with the unrealized holding gains and losses (those for which no allowance for credit losses are recorded) reported as a component of other comprehensive income, net of tax. Securities held for resale in anticipation of short-term market movements are classified as trading and are carried at fair value, with changes in unrealized holding gains and losses included in income. Management determines the appropriate classification of securities at the time of purchase. Securities with limited marketability, such as stock in the Federal Reserve Bank and the Federal Home Loan Bank, are carried at cost. Interest income on securities includes amortization of purchase premiums and discounts. Premiums and discounts on securities are generally amortized using the interest method with a constant effective yield without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Premiums on callable securities are amortized to their earliest call date. Prior to the adoption of a new accounting standard in 2019, as further discussed below, premiums on callable securities were amortized to their respective maturity dates unless such securities were included in pools for the purposes of assessing prepayment expectations. A security is placed on non-accrual status if (i) principal or interest has been in default for a period of 90 days or more or (ii) full payment of principal and interest is not expected. Interest accrued but not received for a security placed on non-accrual status is reversed against interest income. Gains and losses on sales are recorded on the trade date and are derived from the amortized cost of the security sold. Loans . Loans are reported at the principal balance outstanding net of unearned discounts. Interest income on loans is reported on the level-yield method and includes amortization of deferred loan fees and costs over the terms of the individual loans to which they relate, or, in certain cases, over the average expected term for loans where deferred fees and costs are accounted for on a pooled basis. Net loan commitment fees or costs for commitment periods greater than one year are deferred and amortized into fee income or other expense on a straight-line basis over the commitment period. Income on direct financing leases is recognized on a basis that achieves a constant periodic rate of return on the outstanding investment. Further information regarding our accounting policies related to past due loans, non-accrual loans, impaired loans and troubled-debt restructurings is presented in Note 3 - Loans. Allowance for Credit Losses. As further discussed below, we adopted Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” on January 1, 2020. Accounting Standards Codification (“ASC”) Topic 326 (“ASC 326”) replaced the previous “incurred loss” model for measuring credit losses, which encompassed allowances for current known and inherent losses within the portfolio, with an “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. The new current expected credit loss (“CECL”) model requires the measurement of all expected credit losses for financial assets measured at amortized cost and certain off-balance-sheet credit exposures based on historical experience, current conditions, and reasonable and supportable forecasts. In connection with the adoption of ASC 326, we revised certain accounting policies and implemented certain accounting policy elections. The revised accounting policies are described below. Allowance For Credit Losses - Held-to-Maturity Securities: The allowance for credit losses on held-to-maturity securities is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of held-to-maturity securities to present management's best estimate of the net amount expected to be collected. Held-to-maturity securities are charged-off against the allowance when deemed uncollectible by management. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management measures expected credit losses on held-to-maturity securities on a collective basis by major security type with each type sharing similar risk characteristics and considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. Management has made the accounting policy election to exclude accrued interest receivable on held-to-maturity securities from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on held-to-maturity securities is presented in Note 2 - Securities. Allowance For Credit Losses - Available-for-Sale Securities: For available-for-sale securities in an unrealized loss position, we first assess whether (i) we intend to sell or (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis. If either case is affirmative, any previously recognized allowances are charged-off and the security's amortized cost is written down to fair value through income. If neither case is affirmative, the security is evaluated to determine whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and any adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on available-for-sale securities from the estimate of credit losses. Available-for-sale securities are charged-off against the allowance or, in the absence of any allowance, written down through income when deemed uncollectible by management or when either of the aforementioned criteria regarding intent or requirement to sell is met. Prior to the adoption of ASU 2016-13, declines in the fair value of held-to-maturity and available-for-sale securities below their cost that were deemed to be other than temporary were reflected in earnings as realized losses. In estimating other-than-temporary impairment losses prior to January 1, 2020, management considered, among other things, (i) the length of time and the extent to which the fair value had been less than cost, (ii) the financial condition and near-term prospects of the issuer and (iii) the intent and our ability to retain our investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. Allowance for Credit Losses - Loans: The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present management's best estimate of the net amount expected to be collected. Loans are charged-off against the allowance when deemed uncollectible by management. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on loans from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on loans is presented in Note 3 - Loans. Prior to the adoption of ASU 2016-13, the allowance for credit losses on loans was a contra-asset valuation account established through a provision for loan losses charged to expense, which represented management’s best estimate of inherent losses that had been incurred within the existing portfolio of loans. The allowance for credit losses on loans included allowance allocations calculated in accordance with ASC Topic 310, “Receivables” and allowance allocations calculated in accordance with ASC Topic 450, “Contingencies.” Allowance For Credit Losses - Off-Balance-Sheet Credit Exposures: The allowance for credit losses on off-balance-sheet credit exposures is a liability account, calculated in accordance with ASC 326, representing expected credit losses over the contractual period for which we are exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if we have the unconditional right to cancel the obligation. The allowance is reported as a component of accrued interest payable and other liabilities in our consolidated balance sheets. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Further information regarding our policies and methodology used to estimate the allowance for credit losses on off-balance-sheet credit exposures is presented in Note 8 - Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies. Premises and Equipment. Land is carried at cost. Building and improvements, and furniture and equipment are carried at cost, less accumulated depreciation, computed principally by the straight-line method based on the estimated useful lives of the related property. Leasehold improvements are generally depreciated over the lesser of the term of the respective leases or the estimated useful lives of the improvements. We lease certain office facilities and office equipment under operating leases. We also own certain office facilities which we lease to outside parties under operating lessor leases; however, such leases are not significant. In 2019, we adopted certain accounting standard updates related to accounting for leases as further discussed below. Under the new standards, for operating leases other than those considered to be short-term, we recognize lease right-of-use assets and related lease liabilities. Such amounts are reported as components of premises and equipment and accrued interest payable and other liabilities, respectively, on our accompanying consolidated balance sheet. We do not recognize short-term operating leases on our balance sheet. A short-term operating lease has an original term of 12 months or less and does not have a purchase option that is likely to be exercised. In recognizing lease right-of-use assets and related lease liabilities, we account for lease and non-lease components (such as taxes, insurance, and common area maintenance costs) separately as such amounts are generally readily determinable under our lease contracts. Lease payments over the expected term are discounted using our incremental borrowing rate referenced to the Federal Home Loan Bank Secure Connect advance rates for borrowings of similar term. We also consider renewal and termination options in the determination of the term of the lease. If it is reasonably certain that a renewal or termination option will be exercised, the effects of such options are included in the determination of the expected lease term. Generally, we cannot be reasonably certain about whether or not we will renew a lease until such time the lease is within the last two years of the existing lease term. However, renewal options related to our regional headquarters facilities or operations centers are evaluated on a case-by-case basis, typically in advance of such time frame. When we are reasonably certain that a renewal option will be exercised, we measure/remeasure the right-of-use asset and related lease liability using the lease payments specified for the renewal period or, if such amounts are unspecified, we generally assume an increase (evaluated on a case-by-case basis in light of prevailing market conditions) in the lease payment over the final period of the existing lease term. Foreclosed Assets . Assets acquired through or instead of loan foreclosure are held for sale and are initially recorded at fair value less estimated selling costs when acquired, establishing a new cost basis. Costs after acquisition are generally expensed. If the fair value of the asset declines, a write-down is recorded through expense. The valuation of foreclosed assets is subjective in nature and may be adjusted in the future because of changes in economic conditions. Foreclosed assets are included in other assets in the accompanying consolidated balance sheets and totaled $850 thousand and $1.1 million at December 31, 2020 and 2019. Goodwill. Goodwill represents the excess of the cost of businesses acquired over the fair value of the net assets acquired. Goodwill is assigned to reporting units and tested for impairment at least annually on October 1st, or on an interim basis if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying value. See Note 5 - Goodwill and Other Intangible Assets. Intangibles and Other Long-Lived Assets . Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset, or liability. Our intangible assets relate to core deposits, non-compete agreements and customer relationships. Intangible assets with definite useful lives are amortized on an accelerated basis over their estimated life. Intangible assets with indefinite useful lives are not amortized until their lives are determined to be definite. Intangible assets, premises and equipment and other long-lived assets are tested for impairment whenever events or changes in circumstances indicate the carrying amount of the assets may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value. See Note 5 - Goodwill and Other Intangible Assets. Revenue Recognition . In general, for revenue not associated with financial instruments, guarantees and lease contracts, we apply the following steps when recognizing revenue from contracts with customers: (i) identify the contract, (ii) identify the performance obligations, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations and (v) recognize revenue when a performance obligation is satisfied. Our contracts with customers are generally short term in nature, typically due within one year or less or cancellable by us or our customer upon a short notice period. Performance obligations for our customer contracts are generally satisfied at a single point in time, typically when the transaction is complete, or over time. For performance obligations satisfied over time, we primarily use the output method, directly measuring the value of the products/services transferred to the customer, to determine when performance obligations have been satisfied. We typically receive payment from customers and recognize revenue concurrent with the satisfaction of our performance obligations. In most cases, this occurs within a single financial reporting period. For payments received in advance of the satisfaction of performance obligations, revenue recognition is deferred until such time as the performance obligations have been satisfied. In cases where we have not received payment despite satisfaction of our performance obligations, we accrue an estimate of the amount due in the period our performance obligations have been satisfied. For contracts with variable components, only amounts for which collection is probable are accrued. We generally act in a principal capacity, on our own behalf, in most of our contracts with customers. In such transactions, we recognize revenue and the related costs to provide our services on a gross basis in our financial statements. In some cases, we act in an agent capacity, deriving revenue through assisting other entities in transactions with our customers. In such transactions, we recognize revenue and the related costs to provide our services on a net basis in our financial statements. These transactions recognized on a net basis primarily relate to insurance and brokerage commissions and fees derived from our customers' use of various interchange and ATM/debit card networks. Share-Based Payments . Compensation expense for stock options, non-vested stock awards/stock units and deferred stock units is based on the fair value of the award on the measurement date, which, for us, is the date of the grant and is recognized ratably over the service period of the award. Compensation expense for performance stock units is based on the fair value of the award on the measurement date, which, for us, is the date of the grant and is recognized over the service period of the award based upon the probable number of units expected to vest. The fair value of stock options is estimated using a binomial lattice-based valuation model. The fair value of non-vested stock awards/stock units and deferred stock units is generally the market price of our stock on the date of grant. The fair value of performance stock units is generally the market price of our stock on the date of grant discounted by the present value of the dividends expected to be paid on our common stock during the service period of the award because dividend equivalent payments on performance stock units are deferred until such time that the units vest and shares are issued. The impact of forfeitures of share-based payment awards on compensation expense is recognized as forfeitures occur. Advertising Costs. Advertising costs are expensed as incurred. Income Taxes . Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities (excluding deferred tax assets and liabilities related to business combinations or components of other comprehensive income). Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. Interest and/or penalties related to income taxes are reported as a component of income tax expense. The income tax effects related to settlements of share-based payment awards are reported in earnings as an increase (or decrease) to income tax expense. See Note 13 - Income Taxes. We file a consolidated income tax return with our subsidiaries. Federal income tax expense or benefit has been allocated to subsidiaries on a separate return basis. Basic and Diluted Earnings Per Common Share. Earnings per common share is computed using the two-class method prescribed under ASC Topic 260, “Earnings Per Share.” ASC 260 provides that unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and shall be included in the computation of earnings per share pursuant to the two-class method. We have determined that our outstanding non-vested stock awards/stock units and deferred stock units are participating securities. Under the two-class method, basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. A reconciliation of the weighted-average shares used in calculating basic earnings per common share and the weighted average common shares used in calculating diluted earnings per common share for the reported periods is provided in Note 10 - Earnings Per Common Share. Comprehensive Income. Comprehensive income includes all changes in shareholders’ equity during a period, except those resulting from transactions with shareholders. Besides net income, other components of our comprehensive income include the after tax effect of changes in the net unrealized gain/loss on securities available for sale, changes in the net unrealized gain on securities transferred to held to maturity and changes in the net actuarial gain/loss on defined benefit post-retirement benefit plans. See Note 14 - Other Comprehensive Income (Loss). Derivative Financial Instruments . Our hedging policies permit the use of various derivative financial instruments to manage interest rate risk or to hedge specified assets and liabilities. All derivatives are recorded at fair value on our balance sheet. Derivatives executed with the same counterparty are generally subject to master netting arrangements, however, fair value amounts recognized for derivatives and fair value amounts recognized for the right/obligation to reclaim/return cash collateral are not offset for financial reporting purposes. We may be required to recognize certain contracts and commitments as derivatives when the characteristics of those contracts and commitments meet the definition of a derivative. To qualify for hedge accounting, derivatives must be highly effective at reducing the risk associated with the exposure being hedged and must be designated as a hedge at the inception of the derivative contract. We consider a hedge to be highly effective if the change in fair value of the derivative hedging instrument is within 80% to 125% of the opposite change in the fair value of the hedged item attributable to the hedged risk. If derivative instruments are designated as hedges of fair values, and such hedges are highly effective, both the change in the fair value of the hedge and the hedged item are included in current earnings. Fair value adjustments related to cash flow hedges are recorded in other comprehensive income and are reclassified to earnings when the hedged transaction is reflected in earnings. Ineffective portions of hedges are reflected in earnings as they occur. Actual cash receipts and/or payments and related accruals on derivatives related to hedges are recorded as adjustments to the interest income or interest expense associated with the hedged item. During the life of the hedge, we formally assess whether derivatives designated as hedging instruments continue to be highly effective in offsetting changes in the fair value or cash flows of hedged items. If it is determined that a hedge has ceased to be highly effective, we will discontinue hedge accounting prospectively. At such time, previous adjustments to the carrying value of the hedged item are reversed into current earnings and the derivative instrument is reclassified to a trading position recorded at fair value. Fair Value Measurements . In general, fair values of financial instruments are based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and our creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. See Note 17 - Fair Value Measurements. Transfers of Financial Assets . Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (i) the assets have been isolated from us, (ii) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (iii) we do not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Loss Contingencies . Loss contingencies, including claims and legal actions arising in the ordinary course of business are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Trust Assets. Assets of our trust department, other than cash on deposit at Frost Bank, are not included in the accompanying financial statements because they are not our assets. Accounting Changes, Reclassifications and Restatements. Certain items in prior financial statements have been reclassified to conform to the current presentation. As discussed above, on January 1, 2020 we adopted the provisions of ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Upon adoption, we recognized an after-tax cumulative effect reduction to retained earnings totaling $29.3 million, as detailed in the table below. Operating results for periods after January 1, 2020 are presented in accordance with ASC 326 while prior period amounts continue to be reported in accordanc |
Securities
Securities | 12 Months Ended |
Dec. 31, 2020 | |
Investments, Debt and Equity Securities [Abstract] | |
Securities | Securities Securities - Held to Maturity. A summary of the amortized cost, fair value and allowance for credit losses related to securities held to maturity as of December 31, 2020 and 2019 is presented below. Amortized Gross Gross Estimated Allowance Net December 31, 2020 Residential mortgage-backed securities $ 528,784 $ 41,742 $ — $ 570,526 $ — $ 528,784 States and political subdivisions 1,415,549 65,321 — 1,480,870 (160) 1,415,389 Other 1,500 — — 1,500 — 1,500 Total $ 1,945,833 $ 107,063 $ — $ 2,052,896 $ (160) $ 1,945,673 December 31, 2019 Residential mortgage-backed securities $ 530,861 $ 22 $ 9,365 $ 521,518 $ — $ 530,861 States and political subdivisions 1,497,644 28,909 896 1,525,657 — 1,497,644 Other 1,500 — — 1,500 — 1,500 Total $ 2,030,005 $ 28,931 $ 10,261 $ 2,048,675 $ — $ 2,030,005 All mortgage-backed securities included in the above table were issued by U.S. government agencies and corporations. The carrying value of held-to-maturity securities pledged to secure public funds, trust deposits, repurchase agreements and for other purposes, as required or permitted by law was $659.2 million and $561.4 million at December 31, 2020 and 2019, respectively. Accrued interest receivable on held-to-maturity securities totaled $21.7 million and $21.1 million at December 31, 2020 and 2019, respectively and is included in accrued interest receivable and other assets in the accompanying consolidated balance sheets. From time to time, we have reclassified certain securities from available for sale to held to maturity. During 2019, we reclassified securities with an aggregate fair value of $377.8 million and an aggregate net unrealized gain of $3.3 million ($2.6 million, net of tax) on the date of the transfer. The net unamortized, unrealized gain remaining on transferred securities, including those transferred in 2019 and in years prior, included in accumulated other comprehensive income in the accompanying balance sheet totaled $3.5 million ($2.8 million, net of tax) at December 31, 2020 and $4.8 million ($3.8 million, net of tax) at December 31, 2019. This amount will be amortized out of accumulated other comprehensive income over the remaining life of the underlying securities as an adjustment of the yield on those securities. The allowance for credit losses on held-to-maturity securities is a contra-asset valuation account that is deducted from the amortized cost basis of held-to-maturity securities to present the net amount expected to be collected. Management measures expected credit losses on held-to-maturity securities on a collective basis by major security type with each type sharing similar risk characteristics, and considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. With regard to U.S. Treasury and residential mortgage-backed securities issued by the U.S. government, or agencies thereof, it is expected that the securities will not be settled at prices less than the amortized cost bases of the securities as such securities are backed by the full faith and credit of and/or guaranteed by the U.S. government. Accordingly, no allowance for credit losses has been recorded for these securities. With regard to securities issued by States and political subdivisions and other held-to-maturity securities, management considers (i) issuer bond ratings, (ii) historical loss rates for given bond ratings, (iii) whether issuers continue to make timely principal and interest payments under the contractual terms of the securities, (iv) internal forecasts and (v) whether or not such securities are guaranteed by the Texas Permanent School Fund (“PSF”) or pre-refunded by the issuers. The following table summarizes Moody's and/or Standard & Poor's bond ratings for our portfolio of held-to-maturity securities issued by States and political subdivisions and other securities as of December 31, 2020: States and Political Subdivisions Not Guaranteed or Pre-Refunded Guaranteed by the Texas PSF Pre-Refunded Total Other Aaa/AAA $ 115,016 $ 659,999 $ 470,745 $ 1,245,760 $ — Aa/AA 107,065 — — 107,065 — A 62,724 — — 62,724 — Not rated — — — — 1,500 Total $ 284,805 $ 659,999 $ 470,745 $ 1,415,549 $ 1,500 Historical loss rates associated with securities having similar grades as those in our portfolio have generally not been significant. Furthermore, as of December 31, 2020, there were no past due principal or interest payments associated with these securities. The PSF is a sovereign wealth fund which serves to provide revenues for funding of public primary and secondary education in the State of Texas. Based upon (i) the PSF's AAA insurer financial strength rating, (ii) the PSF's substantial capitalization and excess guarantee capacity and (iii) a zero historical loss rate, no allowance for credit losses has been recorded for securities guaranteed by the PSF as there is no current expectation of credit losses related to these securities. Pre-refunded securities have been defeased by the issuer and are fully secured by cash and/or U.S. Treasury securities held in escrow for payment to holders when the underlying call dates of the securities are reached. Accordingly, no allowance for credit losses has been recorded for securities that have been defeased as there is no current expectation of credit losses related to these securities. The following table details activity in the allowance for credit losses on held-to-maturity securities during 2020. Beginning balance $ — Impact of adopting ASC 326 215 Credit loss expense (benefit) (55) Ending balance $ 160 Securities - Available for Sale. A summary of the amortized cost, fair value and allowance for credit losses related to securities available for sale as of December 31, 2020 and 2019 is presented below. Amortized Gross Gross Allowance Estimated December 31, 2020 U.S. Treasury $ 1,084,542 $ 35,091 $ — $ — $ 1,119,633 Residential mortgage-backed securities 1,916,581 71,102 4 — 1,987,679 States and political subdivisions 6,683,927 603,975 — — 7,287,902 Other 42,351 — — — 42,351 Total $ 9,727,401 $ 710,168 $ 4 $ — $ 10,437,565 December 31, 2019 U.S. Treasury $ 1,941,283 $ 18,934 $ 12,084 $ — $ 1,948,133 Residential mortgage-backed securities 2,176,275 32,608 1,289 — 2,207,594 States and political subdivisions 6,717,344 353,857 204 — 7,070,997 Other 42,867 — — — 42,867 Total $ 10,877,769 $ 405,399 $ 13,577 $ — $ 11,269,591 All mortgage-backed securities included in the above table were issued by U.S. government agencies and corporations. At December 31, 2020 all of the securities in our available for sale municipal bond portfolio were issued by the State of Texas or political subdivisions or agencies within the State of Texas, of which approximately 77.8% are either guaranteed by the PSF or have been pre-refunded. Securities with limited marketability, such as stock in the Federal Reserve Bank and the Federal Home Loan Bank, are carried at cost and are reported as other available for sale securities in the table above. The carrying value of available-for-sale securities pledged to secure public funds, trust deposits, repurchase agreements and for other purposes, as required or permitted by law was $4.4 billion and $3.4 billion at December 31, 2020 and 2019, respectively. Accrued interest receivable on available-for-sale securities totaled $111.0 million and $115.9 million at December 31, 2020 and 2019, respectively, and is included in accrued interest receivable and other assets in the accompanying consolidated balance sheets. The table below summarizes, as of December 31, 2020, securities available for sale in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by type of security and length of time in a continuous unrealized loss position. Less than 12 Months More than 12 Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized Residential mortgage-backed securities $ 1,711 $ 3 $ 121 $ 1 $ 1,832 $ 4 Total $ 1,711 $ 3 $ 121 $ 1 $ 1,832 $ 4 As of December 31, 2020, no allowance for credit losses has been recognized on available for sale securities in an unrealized loss position as management does not believe any of the securities are impaired due to reasons of credit quality. This is based upon our analysis of the underlying risk characteristics, including credit ratings, and other qualitative factors related to our available for sale securities and in consideration of our historical credit loss experience and internal forecasts. The issuers of these securities continue to make timely principal and interest payments under the contractual terms of the securities. Furthermore, management does not have the intent to sell any of the securities classified as available for sale in the table above and believes that it is more likely than not that we will not have to sell any such securities before a recovery of cost. The unrealized losses are due to increases in market interest rates over the yields available at the time the underlying securities were purchased. The fair value is expected to recover as the securities approach their maturity date or repricing date or if market yields for such investments decline. Contractual Maturities. The following table summarizes the maturity distribution schedule of securities held to maturity and securities available for sale as of December 31, 2020. Mortgage-backed securities are included in maturity categories based on their stated maturity date. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Other securities classified as available for sale include stock in the Federal Reserve Bank and the Federal Home Loan Bank, which have no maturity date. These securities have been included in the total column only. Within 1 Year 1 - 5 Years 5 - 10 Years After 10 Years Total Held To Maturity Amortized Cost Residential mortgage-backed securities $ 22 $ 165 $ 516,118 $ 12,479 $ 528,784 States and political subdivisions 155,941 463,302 207,076 589,230 1,415,549 Other — 1,500 — — 1,500 Total $ 155,963 $ 464,967 $ 723,194 $ 601,709 $ 1,945,833 Estimated Fair Value Residential mortgage-backed securities $ 22 $ 167 $ 556,610 $ 13,727 $ 570,526 States and political subdivisions 156,689 480,530 212,937 630,714 1,480,870 Other — 1,500 — — 1,500 Total $ 156,711 $ 482,197 $ 769,547 $ 644,441 $ 2,052,896 Available For Sale Amortized Cost U. S. Treasury $ 798,742 $ 285,800 $ — $ — $ 1,084,542 Residential mortgage-backed securities 11,833 25,336 22,583 1,856,829 1,916,581 States and political subdivisions 199,697 1,323,635 638,720 4,521,875 6,683,927 Other — — — — 42,351 Total $ 1,010,272 $ 1,634,771 $ 661,303 $ 6,378,704 $ 9,727,401 Estimated Fair Value U. S. Treasury $ 811,778 $ 307,855 $ — $ — $ 1,119,633 Residential mortgage-backed securities 12,278 26,724 23,116 1,925,561 1,987,679 States and political subdivisions 201,166 1,442,871 694,760 4,949,105 7,287,902 Other — — — — 42,351 Total $ 1,025,222 $ 1,777,450 $ 717,876 $ 6,874,666 $ 10,437,565 Sales of Securities. Sales of securities available for sale were as follows: 2020 2019 2018 Proceeds from sales $ 1,162,352 $ 18,660,147 $ 16,806,062 Gross realized gains 108,989 930 3 Gross realized losses — (637) (159) Tax benefit (expense) related to securities gains/losses (22,888) (62) 33 Premiums and Discounts. Premium amortization and discount accretion included in interest income on securities was as follows: 2020 2019 2018 Premium amortization $ (126,210) $ (120,785) $ (108,483) Discount accretion 2,425 5,227 7,955 Net (premium amortization) discount accretion $ (123,785) $ (115,558) $ (100,528) Trading Account Securities. Year-end trading account securities, at estimated fair value, were as follows: 2020 2019 U.S. Treasury $ 23,996 $ 24,298 States and political subdivisions 460 — Total $ 24,456 $ 24,298 Net gains and losses on trading account securities were as follows: 2020 2019 2018 Net gain on sales transactions $ 1,102 $ 2,173 $ 1,816 Net mark-to-market gains (losses) 85 (176) 105 Net gain on trading account securities $ 1,187 $ 1,997 $ 1,921 |
Loans
Loans | 12 Months Ended |
Dec. 31, 2020 | |
Receivables [Abstract] | |
Loans | Loans Year-end loans, including leases net of unearned discounts, consisted of the following: 2020 2019 Commercial and industrial $ 4,955,341 $ 5,187,466 Energy: Production 976,473 1,348,900 Service 116,825 192,996 Other 141,900 110,986 Total energy 1,235,198 1,652,882 Paycheck Protection Program 2,433,849 — Commercial real estate: Commercial mortgages 5,478,806 4,594,113 Construction 1,223,814 1,312,659 Land 317,847 289,467 Total commercial real estate 7,020,467 6,196,239 Consumer real estate: Home equity loans 329,390 375,596 Home equity lines of credit 452,854 354,671 Other 548,530 464,146 Total consumer real estate 1,330,774 1,194,413 Total real estate 8,351,241 7,390,652 Consumer and other 505,680 519,332 Total loans $ 17,481,309 $ 14,750,332 Concentrations of Credit. Most of our lending activity occurs within the State of Texas, including the four largest metropolitan areas of Austin, Dallas/Ft. Worth, Houston and San Antonio, as well as other markets. The majority of our loan portfolio consists of commercial and industrial and commercial real estate loans. As of December 31, 2020, there were no concentrations of loans related to any single industry in excess of 10% of total loans. The largest industry concentration was related to the energy industry, which totaled 7.1% of total loans, or 8.2% excluding PPP Loans. As of December 31, 2019, there were no concentrations of loans related to any single industry in excess of 10% of total loans other than energy loans, which totaled 11.2% of total loans at such date. Unfunded commitments to extend credit and standby letters of credit issued to customers in the energy industry totaled $919.1 million and $60.7 million, respectively, as of December 31, 2020. Foreign Loans. We have U.S. dollar denominated loans and commitments to borrowers in Mexico. The outstanding balance of these loans and the unfunded amounts available under these commitments were not significant at December 31, 2020 or 2019. Overdrafts . Deposit account overdrafts reported as loans totaled $5.6 million and $9.0 million at December 31, 2020 and 2019. Related Party Loans . In the ordinary course of business, we have granted loans to certain directors, executive officers and their affiliates (collectively referred to as “related parties”). Activity in related party loans during 2020 is presented in the following table. Other changes were primarily related to changes in related-party status. Balance outstanding at December 31, 2019 $ 298,528 Principal additions 267,951 Principal reductions (212,157) Other changes (1,217) Balance outstanding at December 31, 2020 $ 353,105 Accrued Interest Receivable. Accrued interest receivable on loans totaled $48.7 million and $45.5 million at December 31, 2020 and 2019, respectively and is included in accrued interest receivable and other assets in the accompany consolidated balance sheets. COVID-19 Loan Deferments. Certain borrowers are currently unable to meet their contractual payment obligations because of the adverse effects of COVID-19. To help mitigate these effects, loan customers may apply for a deferral of payments, or portions thereof, for up to 90 days. After 90 days, customers may apply for an additional deferral, and a small proportion of our customers have requested such an additional deferral. In the absence of other intervening factors, such short-term modifications made on a good faith basis are not categorized as troubled debt restructurings, nor are loans granted payment deferrals related to COVID-19 reported as past due or placed on non-accrual status (provided the loans were not past due or on non-accrual status prior to the deferral). At December 31, 2020, there were 39 loans in COVID-19 related deferment with an aggregate outstanding balance of approximately $45.9 million. Non-Accrual and Past Due Loans. Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Loans are placed on non-accrual status when, in management’s opinion, the borrower may be unable to meet payment obligations as they become due, as well as when required by regulatory provisions. In determining whether or not a borrower may be unable to meet payment obligations for each class of loans, we consider the borrower’s debt service capacity through the analysis of current financial information, if available, and/or current information with regards to our collateral position. Regulatory provisions would typically require the placement of a loan on non-accrual status if (i) principal or interest has been in default for a period of 90 days or more unless the loan is both well secured and in the process of collection or (ii) full payment of principal and interest is not expected. Loans may be placed on non-accrual status regardless of whether or not such loans are considered past due. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income on non-accrual loans is recognized only to the extent that cash payments are received in excess of principal due. A loan may be returned to accrual status when all the principal and interest amounts contractually due are brought current and future principal and interest amounts contractually due are reasonably assured, which is typically evidenced by a sustained period (at least six months) of repayment performance by the borrower. Year-end non-accrual loans, segregated by class of loans, were as follows: December 31, 2020 December 31, 2019 Total Non-Accrual Non-Accrual with No Credit Loss Allowance Total Non-Accrual Non-Accrual with No Credit Loss Allowance Commercial and industrial $ 19,849 $ 4,479 $ 26,038 $ 13,266 Energy 23,168 639 65,761 3,281 Paycheck Protection Program — — — — Commercial real estate: Buildings, land and other 15,737 14,116 8,912 6,558 Construction 1,684 1,684 665 665 Consumer real estate 993 993 922 922 Consumer and other 18 — 5 — Total $ 61,449 $ 21,911 $ 102,303 $ 24,692 The following table presents non-accrual loans as of December 31, 2020 by class and year of origination. 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Commercial and industrial $ 9,479 $ 3,351 $ 1,846 $ 1,489 $ 105 $ 29 $ 839 $ 2,711 $ 19,849 Energy 2,421 6,772 2,144 — — 359 11,193 279 23,168 Paycheck Protection Program — — — — — — — — — Commercial real estate: Buildings, land and other 2,914 5,031 999 2,019 1,933 2,736 105 — 15,737 Construction 1,684 — — — — — — — 1,684 Consumer real estate — — — 211 — 408 259 115 993 Consumer and other — — — — — — 18 — 18 Total $ 16,498 $ 15,154 $ 4,989 $ 3,719 $ 2,038 $ 3,532 $ 12,414 $ 3,105 $ 61,449 In the table above, loans reported as 2020 originations were, for the most part, first originated in various years prior to 2020 but were renewed in the current year. Had non-accrual loans performed in accordance with their original contract terms, we would have recognized additional interest income, net of tax, of approximately $2.9 million in 2020, $3.9 million in 2019 and $5.2 million in 2018. An age analysis of past due loans (including both accruing and non-accruing loans), segregated by class of loans, as of December 31, 2020 was as follows: Loans Loans Total Past Current Total Loans Accruing Commercial and industrial $ 45,416 $ 9,616 $ 55,032 $ 4,900,309 $ 4,955,341 $ 5,615 Energy 14,833 11,237 26,070 1,209,128 1,235,198 3,696 Paycheck Protection Program — — — 2,433,849 2,433,849 — Commercial real estate: Buildings, land and other 22,130 6,304 28,434 5,768,219 5,796,653 1,275 Construction 856 — 856 1,222,958 1,223,814 — Consumer real estate 8,090 3,047 11,137 1,319,637 1,330,774 2,469 Consumer and other 5,537 1,251 6,788 498,892 505,680 1,233 Total $ 96,862 $ 31,455 $ 128,317 $ 17,352,992 $ 17,481,309 $ 14,288 Impaired Loans. Prior to the adoption of ASC 326 on January 1, 2020, loans were reported as impaired when, based on then current information and events, it was probable we would be unable to collect all amounts due in accordance with the original contractual terms of the loan agreement, including scheduled principal and interest payments. Impairment was evaluated in total for smaller-balance loans of a similar nature and on an individual loan basis for other loans. If a loan was impaired, a specific valuation allowance was allocated, if necessary, so that the loan was reported net, at the present value of estimated future cash flows using the loan’s existing rate or at the fair value of collateral if repayment was expected solely from the collateral. Interest payments on impaired loans were typically applied to principal unless collectibility of the principal amount was reasonably assured, in which case interest was recognized on a cash basis. Impaired loans, or portions thereof, were charged off when deemed uncollectible. Impaired loans as of December 31, 2019 and the average recorded investment in impaired loans during 2019 and 2018 are set forth in the following table. No interest income was recognized on impaired loans subsequent to their classification as impaired. Unpaid Recorded Recorded Total Related Average Average 2019 Commercial and industrial $ 30,909 $ 11,588 $ 12,772 $ 24,360 $ 7,849 $ 14,913 $ 18,246 Energy 87,103 2,764 62,480 65,244 20,246 53,563 75,453 Commercial real estate: Buildings, land and other 9,252 6,255 2,354 8,609 383 13,690 12,799 Construction 697 665 — 665 — 354 — Consumer real estate 570 570 — 570 — 547 704 Consumer and other 5 — 5 5 5 1,285 925 Total $ 128,536 $ 21,842 $ 77,611 $ 99,453 $ 28,483 $ 84,352 $ 108,127 Troubled Debt Restructurings . The restructuring of a loan is considered a “troubled debt restructuring” if both (i) the borrower is experiencing financial difficulties and (ii) the creditor has granted a concession. Concessions may include interest rate reductions or below market interest rates, principal forgiveness, restructuring amortization schedules, reductions in collateral and other actions intended to minimize potential losses. Troubled debt restructurings that occurred during 2020, 2019 and 2018 are set forth in the following table. 2020 2019 2018 Balance at Balance at Balance at Balance at Balance at Balance at Commercial and industrial $ 3,661 $ 192 $ 3,845 $ 2,161 $ 2,203 $ — Energy 2,432 2,421 — — 13,708 — Commercial real estate: Buildings, land and other 9,310 4,922 9,457 9,393 — — Construction 1,017 1,017 — — — — Consumer real estate — — 124 120 — — Consumer and other 1,104 — — — — — $ 17,524 $ 8,552 $ 13,426 $ 11,674 $ 15,911 $ — Loan modifications are typically related to extending amortization periods, converting loans to interest only for a limited period of time, deferral of interest payments, waiver of certain covenants, consolidating notes and/or reducing collateral or interest rates. The modifications during the reported periods did not significantly impact our determination of the allowance for credit losses on loans. Additional information related to restructured loans was as follows: 2020 2019 2018 Restructured loans past due in excess of 90 days at period-end: Number of loans 1 4 — Dollar amount of loans $ 2,008 $ 3,340 $ — Restructured loans on non-accrual status at period end 8,552 5,576 — Charge-offs of restructured loans: Recognized in connection with restructuring 337 — — Recognized on previously restructured loans 3,894 1,500 7,650 Proceeds from sale of restructured loans — — 15,750 Credit Quality Indicators. As part of the on-going monitoring of the credit quality of our loan portfolio, management tracks certain credit quality indicators including trends related to (i) the weighted-average risk grade of commercial loans, (ii) the level of classified commercial loans, (iii) the delinquency status of consumer loans (iv) non-performing loans (see details above) and (vi) the general economic conditions in the State of Texas. We utilize a risk grading matrix to assign a risk grade to each of our commercial loans. Loans are graded on a scale of 1 to 14. A description of the general characteristics of the 14 risk grades is as follows: • Grades 1, 2 and 3 - These grades include loans to very high credit quality borrowers of investment or near investment grade. These borrowers are generally publicly traded (grades 1 and 2), have significant capital strength, moderate leverage, stable earnings and growth, and readily available financing alternatives. Smaller entities, regardless of strength, would generally not fit in these grades. • Grades 4 and 5 - These grades include loans to borrowers of solid credit quality with moderate risk. Borrowers in these grades are differentiated from higher grades on the basis of size (capital and/or revenue), leverage, asset quality and the stability of the industry or market area. • Grades 6, 7 and 8 - These grades include “pass grade” loans to borrowers of acceptable credit quality and risk. Such borrowers are differentiated from Grades 4 and 5 in terms of size, secondary sources of repayment or they are of lesser stature in other key credit metrics in that they may be over-leveraged, under capitalized, inconsistent in performance or in an industry or an economic area that is known to have a higher level of risk, volatility, or susceptibility to weaknesses in the economy. • Grade 9 - This grade includes loans on management’s “watch list” and is intended to be utilized on a temporary basis for pass grade borrowers where a significant risk-modifying action is anticipated in the near term. • Grade 10 - This grade is for “Other Assets Especially Mentioned” in accordance with regulatory guidelines. This grade is intended to be temporary and includes loans to borrowers whose credit quality has clearly deteriorated and are at risk of further decline unless active measures are taken to correct the situation. • Grade 11 - This grade includes “Substandard” loans, in accordance with regulatory guidelines, for which the accrual of interest has not been stopped. By definition under regulatory guidelines, a “Substandard” loan has defined weaknesses which make payment default or principal exposure likely, but not yet certain. Such loans are apt to be dependent upon collateral liquidation, a secondary source of repayment or an event outside of the normal course of business. • Grade 12 - This grade includes “Substandard” loans, in accordance with regulatory guidelines, for which the accrual of interest has been stopped. This grade includes loans where interest is more than 120 days past due and not fully secured and loans where a specific valuation allowance may be necessary, but generally does not exceed 30% of the principal balance. • Grade 13 - This grade includes “Doubtful” loans in accordance with regulatory guidelines. Such loans are placed on non-accrual status and may be dependent upon collateral having a value that is difficult to determine or upon some near-term event which lacks certainty. Additionally, these loans generally have a specific valuation allowance in excess of 30% of the principal balance. • Grade 14 - This grade includes “Loss” loans in accordance with regulatory guidelines. Such loans are to be charged-off or charged-down when payment is acknowledged to be uncertain or when the timing or value of payments cannot be determined. “Loss” is not intended to imply that the loan or some portion of it will never be paid, nor does it in any way imply that there has been a forgiveness of debt. In monitoring credit quality trends in the context of assessing the appropriate level of the allowance for credit losses on loans, we monitor portfolio credit quality by the weighted-average risk grade of each class of commercial loan. Individual relationship managers, under the oversight of credit administration, review updated financial information for all pass grade loans to reassess the risk grade on at least an annual basis. When a loan has a risk grade of 9, it is still considered a pass grade loan; however, it is considered to be on management’s “watch list,” where a significant risk-modifying action is anticipated in the near term. When a loan has a risk grade of 10 or higher, a special assets officer monitors the loan on an on-going basis. The following tables present weighted-average risk grades for all commercial loans, by class and year of origination/renewal as of December 31, 2020. Paycheck Protection Program (“PPP”) loans are excluded as such loans are fully guaranteed by the Small Business Administration (“SBA”). 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Commercial and industrial Risk grades 1-8 $ 1,300,844 $ 552,885 $ 290,088 $ 226,232 $ 107,063 $ 113,458 $ 1,852,341 $ 63,210 $ 4,506,121 Risk grade 9 50,785 37,865 33,961 20,851 12,348 5,510 85,756 9,122 256,198 Risk grade 10 31,333 7,361 11,379 6,749 710 113 65,180 3,152 125,977 Risk grade 11 4,700 7,002 6,551 3,416 1,426 140 15,005 8,956 47,196 Risk grade 12 6,899 2,399 1,195 1,005 105 29 480 2,416 14,528 Risk grade 13 2,580 952 651 484 — — 359 295 5,321 $ 1,397,141 $ 608,464 $ 343,825 $ 258,737 $ 121,652 $ 119,250 $ 2,019,121 $ 87,151 $ 4,955,341 W/A risk grade 6.19 6.88 7.22 6.39 6.32 5.84 6.38 7.51 6.45 Energy Risk grades 1-8 $ 403,156 $ 18,911 $ 9,759 $ 8,083 $ 1,415 $ 4,326 $ 494,946 $ 27,548 $ 968,144 Risk grade 9 105,772 2,272 1,743 — — — 18,194 5,566 133,547 Risk grade 10 703 4,049 1,339 — 759 — 37,637 1,940 46,427 Risk grade 11 12,218 16,849 1,325 — — 661 30,124 2,735 63,912 Risk grade 12 1,101 4,580 654 — — 359 6,768 279 13,741 Risk grade 13 1,320 2,192 1,490 — — — 4,425 — 9,427 $ 524,270 $ 48,853 $ 16,310 $ 8,083 $ 2,174 $ 5,346 $ 592,094 $ 38,068 $ 1,235,198 W/A risk grade 6.86 9.57 8.68 7.40 7.85 8.06 6.45 8.20 6.85 Commercial real estate: Buildings, land, other Risk grades 1-8 $ 1,544,558 $ 947,102 $ 749,879 $ 605,152 $ 432,941 $ 661,301 $ 56,600 $ 50,340 $ 5,047,873 Risk grade 9 45,527 81,224 75,893 45,485 26,745 37,728 10,521 2,104 325,227 Risk grade 10 14,183 36,414 45,014 71,814 25,343 60,225 200 5,261 258,454 Risk grade 11 22,633 16,302 11,916 39,727 8,655 42,904 6,977 248 149,362 Risk grade 12 2,714 5,031 999 2,019 1,683 2,736 42 — 15,224 Risk grade 13 200 — — — 250 — 63 — 513 $ 1,629,815 $ 1,086,073 $ 883,701 $ 764,197 $ 495,617 $ 804,894 $ 74,403 $ 57,953 $ 5,796,653 W/A risk grade 7.13 7.36 7.54 7.55 7.54 7.20 7.54 7.12 7.34 Construction Risk grades 1-8 $ 374,661 $ 436,077 $ 168,517 $ 67 $ 1,144 $ 1,758 $ 127,801 $ — $ 1,110,025 Risk grade 9 37,430 16,567 — 2,848 — — 14,311 1,131 72,287 Risk grade 10 5,846 — 27,653 — — — 5,463 — 38,962 Risk grade 11 856 — — — — — — — 856 Risk grade 12 1,684 — — — — — — — 1,684 Risk grade 13 — — — — — — — — — $ 420,477 $ 452,644 $ 196,170 $ 2,915 $ 1,144 $ 1,758 $ 147,575 $ 1,131 $ 1,223,814 W/A risk grade 6.82 7.18 8.08 8.95 7.30 6.44 7.29 9.00 7.22 Total commercial real estate $ 2,050,292 $ 1,538,717 $ 1,079,871 $ 767,112 $ 496,761 $ 806,652 $ 221,978 $ 59,084 $ 7,020,467 W/A risk grade 7.06 7.31 7.64 7.56 7.54 7.20 7.37 7.15 7.32 The weighted-average risk grades for “pass grade” (risk grades 1-8) loans was 6.13 for commercial and industrial, 5.99 for energy, 6.97 for commercial real estate - buildings, land and other and 6.99 for commercial real estate - construction). Furthermore, in the tables above, certain loans are reported as 2020 originations and have risk grades of 11 or higher. These loans were, for the most part, first originated in various years prior to 2020 but were renewed in the current year. The following tables present weighted average risk grades for all commercial loans by class as of December 31, 2019. Commercial and Industrial Energy Commercial Real Estate - Buildings, Land and Other Commercial Real Estate - Construction Total Commercial Real Estate W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans Risk grades 1-8 6.17 $ 4,788,857 5.90 $ 1,488,301 6.78 $ 4,523,271 7.25 $ 1,274,098 6.88 $ 5,797,369 Risk grade 9 9.00 247,212 9.00 32,163 9.00 163,714 9.00 21,509 9.00 185,223 Risk grade 10 10.00 71,472 10.00 51,898 10.00 103,626 10.00 15,243 10.00 118,869 Risk grade 11 11.00 53,887 11.00 14,760 11.00 84,057 11.00 1,144 11.00 85,201 Risk grade 12 12.00 18,189 12.00 45,514 12.00 8,529 12.00 665 12.00 9,194 Risk grade 13 13.00 7,849 13.00 20,246 13.00 383 13.00 — 13.00 383 Total 6.44 $ 5,187,466 6.39 $ 1,652,882 7.01 $ 4,883,580 7.31 $ 1,312,659 7.07 $ 6,196,239 Information about the payment status of consumer loans, segregated by portfolio segment and year of origination, as of December 31, 2020 was as follows: 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Consumer real estate: Past due 30-89 days $ 225 $ 1,038 $ 1,556 $ 553 $ 628 $ 2,907 $ 652 $ 531 $ 8,090 Past due 90 or more days 15 139 109 706 25 1,287 615 151 3,047 Total past due 240 1,177 1,665 1,259 653 4,194 1,267 682 11,137 Current loans 336,441 166,323 94,374 80,625 66,241 124,590 434,939 16,104 1,319,637 Total $ 336,681 $ 167,500 $ 96,039 $ 81,884 $ 66,894 $ 128,784 $ 436,206 $ 16,786 $ 1,330,774 Consumer and other: Past due 30-89 days $ 1,750 $ 300 $ 453 $ 52 $ 17 $ — $ 2,238 $ 727 $ 5,537 Past due 90 or more days 71 10 118 — — — 1,031 21 1,251 Total past due 1,821 310 571 52 17 — 3,269 748 6,788 Current loans 45,286 27,813 5,397 2,799 1,705 572 386,791 28,529 498,892 Total $ 47,107 $ 28,123 $ 5,968 $ 2,851 $ 1,722 $ 572 $ 390,060 $ 29,277 $ 505,680 Revolving loans that converted to term during 2020 were as follows: Commercial and industrial $ 47,562 Energy 33,150 Commercial real estate: Buildings, land and other 10,505 Construction 1,131 Consumer real estate 2,264 Consumer and other 16,395 Total $ 111,007 In assessing the general economic conditions in the State of Texas, management monitors and tracks the Texas Leading Index (“TLI”), which is produced by the Federal Reserve Bank of Dallas. The TLI is a single summary statistic that is designed to signal the likelihood of the Texas economy’s transition from expansion to recession and vice versa. Management believes this index provides a reliable indication of the direction of overall credit quality. The TLI is a composite of the following eight leading indicators: (i) Texas Value of the Dollar, (ii) U.S. Leading Index, (iii) real oil prices (iv) well permits, (v) initial claims for unemployment insurance, (vi) Texas Stock Index, (vii) Help-Wanted Index and (viii) average weekly hours worked in manufacturing. The TLI totaled 118.3 at December 31, 2020 (most recent date available) and 127.1 at December 31, 2019. A lower TLI value implies less favorable economic conditions. Allowance For Credit Losses - Loans. The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present the net amount expected to be collected. The amount of the allowance represents management's best estimate of current expected credit losses on loans considering available information, from internal and external sources, relevant to assessing collectibility over the loans' contractual terms, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless (i) management has a reasonable expectation that a trouble debt restructuring will be executed with an individual borrower or (ii) such extension or renewal options are not unconditionally cancellable by us and, in such cases, the borrower is likely to meet applicable conditions and likely to request extension or renewal. Relevant available information includes historical credit loss experience, current conditions and reasonable and supportable forecasts. While historical credit loss experience provides the basis for the estimation of expected credit losses, adjustments to historical loss information may be made for differences in current portfolio-specific risk characteristics, environmental conditions or other relevant factors. The allowance for credit losses is measured on a collective basis for portfolios of loans when similar risk characteristics exist. Loans that do not share risk characteristics are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Expected credit losses for collateral dependent loans, including loans where the borrower is experiencing financial difficulty but foreclosure is not probable, are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. Credit loss expense related to loans reflects the totality of actions taken on all loans for a particular period including any necessary increases or decreases in the allowance related to changes in credit loss expectations associated with specific loans or pools of loans. Portions of the allowance may be allocated for specific credits; however, the entire allowance is available for any credit that, in management’s judgment, should be charged off. While management utilizes its best judgment and information available, the ultimate appropriateness of the allowance is dependent upon a variety of factors beyond our control, including the performance of our loan portfolio, the economy, changes in interest rates and the view of the regulatory authorities toward loan classifications. In calculating the allowance for credit losses, most loans are segmented into pools based upon similar characteristics and risk profiles. Common characteristics and risk profiles include the type/purpose of loan, underlying collateral, geographical similarity and historical/expected credit loss patterns. In developing these loan pools for the purposes of modeling expected credit losses, we also analyzed the degree of correlation in how loans within each portfolio respond when subjected to varying economic conditions and scenarios as well as other portfolio stress factors. For modeling purposes, our loan pools include (i) commercial and industrial and energy - non-revolving, (ii) commercial and industrial and energy - revolving, (iii) commercial real estate - owner occupied, (iv) commercial real estate - non-owner occupied, (v) commercial real estate - construction/land development, (vi) consumer real estate and (vii) consumer and other. We periodically reassess each pool to ensure the loans within the pool continue to share similar characteristics and risk profiles and to determine whether further segmentation is necessary. For each loan pool, we measure expected credit losses over the life of each loan utilizing a combination of models which measure (i) probability of default (“PD”), which is the likelihood that loan will stop performing/default, (ii) probability of attrition (“PA”), which is the likelihood that a loan will pay-off prior to maturity, (iii) loss given default (“LGD”), which is the expected loss rate for loans in default and (iv) exposure at default (“EAD”), which is the estimated outstanding principal balance of the loans upon default, including the expected funding of unfunded commitments outstanding as of the measurement date. For certain commercial loan portfolios, the PD is calculated using a transition matrix to determine the likelihood of a customer’s risk grade migrating from one specified range of risk grades to a different specified range. Expected credit losses are calculated as the product of PD (adjusted for attrition), LGD and EAD. This methodology builds on default probabilities already incorporated into our risk grading process by utilizing pool-specific historical loss rates to calculate expected credit losses. These pool-specific historical loss rates may be adjusted for current macroeconomic assumptions, as further discussed below, and other factors such as differences in underwriting standards, portfolio mix, or when historical asset terms do not reflect the contractual terms of the financial assets being evaluated as of the measurement date. Each time we measure expected credit losses, we assess the relevancy of historical loss information and consider any necessary adjustments to address any differences in asset-specific characteristics. Due to their short-term nature, expected credit losses for overdrafts included in consumer and other loans are based solely upon a weighting of recent historical charge-offs over a period of three years. The measurement of expected credit losses is impacted by loan/borrower attributes and certain macroeconomic variables. Significant loan/borrower attributes utilized in our modeling processes include, among other things, (i) origination date, (ii) maturity date, (iii) payment type, (iv) collateral type and amount, (v) current risk grade, (vi) current unpaid balance and commitment utilization rate, (vii) payment status/delinquency history and (viii) expected recoveries of previously charged-off amounts. Significant macroeconomic variables utilized in our modeling processes include, among other things, (i) Gross State Product for Texas and U.S. Gross Domestic Product, (ii) selected market interest rates including U.S. Treasury rates, bank prime rate, 30-year fixed mortgage rate, BBB corporate bond rate, among others, (iii) unemployment rates, (iv) commercial and residential property prices in Texas and the U.S. as a whole, (v) West Texas Intermediate crude oil price and (vi) total stock market index. PD and PA were estimated by analyzing internally-sourced data related to historical performance of each loan pool over a complete economic cycle. PD and PA are adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a reasonable and supportable forecast period. We have determined that we are reasonably able to forecast the macroeconomic variables used in our modeling processes with an acceptable degree of confidence for a total of two years with the last twelve months of the forecast period encompassing a reversion process whereby the forecasted macroeconomic variables are reverted to their historical mean utilizing a rational, systematic basis. The macroeconomic variables utilized as inputs in our modeling processes were subjected to a variety of analysis procedures and were selected primarily based on statistical relevancy and correlation to our historical credit losses. By reverting these modeling inputs to their historical mean and considering loan/borrower specific attributes, our models are intended to yield a measurement of expected credit losses that reflects our average historical loss rates for periods subsequent to the twelve-month reversion period. The LGD is based on historical recovery averages for each loan pool, adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a two-year forecast period, with the final twelve months of the forecast period encompassing a reversion process, which management considers to be both reasonable and supportable. This same forecast/reversion period is used for all macroeconomic variables used in all of our models. EAD is estimated using a linear regression model that estimates the average percentage of the loan balance that remains at the time of a default event. Management qualitatively adjusts model results for risk factors that are not considered within our modeling processes but are nonetheless relevant in assessing the expected credit losses within our loan pools. These qualitative factor (“Q-Factor”) adjustments may increase or decrease management's estimate of expected credit losses by a calculated percentage or amount based upon the estimated level of risk. The various risks that may be considered in making Q-Factor adjustments include, among other things, the impact of (i) changes in lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries, (ii) actual and expected changes in international, national, regional, and local economic and business conditions and developments that affect the collectibility of the loan pools, (iii) changes in the nature and volume of the loan pools and in the terms of the underlying loans, (iv) changes in the experience, ability, and depth of our lending management and staff, (v) changes in volume and severity of past due financial assets, the volume of non-accrual assets, and the volume and severity of adversely classified or graded assets, (vi) changes in the quality of our credit review function, (vii) changes in the value of the underlying collateral for loans that are non-collateral dependent, (viii) the existence, growth, and effect of any concentrations of credit and (ix) other factors such as |
Premises and Equipment
Premises and Equipment | 12 Months Ended |
Dec. 31, 2020 | |
Property, Plant and Equipment [Abstract] | |
Premises and Equipment | Premises and Equipment and Lease Commitments Year-end premises and equipment were as follows: 2020 2019 Land $ 128,739 $ 112,818 Buildings 458,693 441,404 Technology, furniture and equipment 243,395 226,925 Leasehold improvements 183,827 156,144 Construction and projects in progress 41,202 44,251 Lease right-of-use assets 292,087 297,736 1,347,943 1,279,278 Less accumulated depreciation and amortization (302,365) (267,331) Total premises and equipment, net $ 1,045,578 $ 1,011,947 Depreciation of premises and equipment totaled $49.9 million in 2020, $41.0 million 2019 and $37.2 million in 2018. Lease Commitments . We lease certain office facilities and office equipment under operating leases. Rent expense for all operating leases totaled $46.0 million in 2020, $42.1 million in 2019 and $31.1 million in 2018. On January 1, 2019, we adopted a new accounting standard which required the recognition of certain operating leases on our balance sheet as lease right-of-use assets (reported as component of premises and equipment) and related lease liabilities (reported as a component of accrued interest payable and other liabilities). See Note 1 - Summary of Significant Accounting Policies. The components of total lease expense in 2020 and 2019 were as follows: 2020 2019 Amortization of lease right-of-use assets $ 32,772 $ 27,626 Short-term lease expense 1,799 4,592 Non-lease components (including taxes, insurance, common maintenance, etc.) 11,396 9,896 Total $ 45,967 $ 42,114 Right-of-use lease assets totaled $292.1 million and $297.7 million at December 31, 2020 and 2019, respectively, and are reported as a component of premises and equipment on our accompanying consolidated balance sheets. The related lease liabilities totaled $323.0 million and $323.7 million at December 31, 2020 and 2019, respectively, and are reported as a component of accrued interest payable and other liabilities in the accompanying consolidated balance sheets. Lease payments under operating leases that were applied to our operating lease liability totaled $31.6 million during 2020 and $27.5 million during 2019. The following table reconciles future undiscounted lease payments due under non-cancelable operating leases (those amounts subject to recognition) to the aggregate operating lessee lease liability as of December 31, 2020: Future lease payments 2021 $ 32,357 2022 30,741 2023 28,927 2024 27,487 2025 26,240 Thereafter 267,707 Total undiscounted operating lease liability 413,459 Imputed interest 90,415 Total operating lease liability included in the accompanying balance sheet $ 323,044 Weighted-average lease term in years 15.57 Weighted-average discount rate 3.10% |
Goodwill and Other Intangible A
Goodwill and Other Intangible Assets | 12 Months Ended |
Dec. 31, 2020 | |
Goodwill and Intangible Assets Disclosure [Abstract] | |
Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets Goodwill . Year-end goodwill was as follows: 2020 2019 Goodwill $ 654,952 $ 654,952 Other Intangible Assets. Year-end other intangible assets were as follows: Gross Accumulated Net 2020 Core deposits $ 9,300 $ (8,004) $ 1,296 Customer relationships 2,886 (2,619) 267 $ 12,186 $ (10,623) $ 1,563 2019 Core deposits $ 9,300 $ (7,257) $ 2,043 Customer relationships 3,388 (2,950) 438 $ 12,688 $ (10,207) $ 2,481 Other intangible assets are amortized on an accelerated basis over their estimated lives, which range from 5 to 10 years. Amortization expense related to intangible assets totaled $918 thousand in 2020, $1.2 million in 2019, and $1.4 million in 2018. The estimated aggregate future amortization expense for intangible assets remaining as of December 31, 2020 is as follows: 2021 $ 697 2022 481 2023 282 2024 87 2025 11 Thereafter 5 $ 1,563 |
Deposits
Deposits | 12 Months Ended |
Dec. 31, 2020 | |
Deposits [Abstract] | |
Deposits | Deposits Year-end deposits were as follows: 2020 2019 Non-interest-bearing demand deposits: Commercial and individual $ 13,914,754 $ 10,212,265 Correspondent banks 242,225 246,181 Public funds 960,072 415,183 Total non-interest-bearing demand deposits 15,117,051 10,873,629 Interest-bearing deposits: Private accounts: Savings and interest checking 9,132,789 7,147,327 Money market accounts 8,977,585 7,888,433 Time accounts of $100,000 or more 804,232 736,481 Time accounts under $100,000 331,343 347,418 Total private accounts 19,245,949 16,119,659 Public funds: Savings and interest checking 597,503 548,399 Money market accounts 50,070 73,180 Time accounts of $100,000 or more 5,163 24,672 Time accounts under $100,000 25 25 Total public funds 652,761 646,276 Total interest-bearing deposits 19,898,710 16,765,935 Total deposits $ 35,015,761 $ 27,639,564 The following table presents additional information about our year-end deposits: 2020 2019 Deposits from the Certificate of Deposit Account Registry Service (CDARS) $ 372 $ 361 Deposits from foreign sources (primarily Mexico) 884,169 805,828 Deposits not covered by deposit insurance 18,694,320 13,115,796 Deposits from certain directors, executive officers and their affiliates 210,389 197,919 Scheduled maturities of time deposits, including both private and public funds, at December 31, 2020 were as follows: 2021 $ 979,825 2022 160,938 $ 1,140,763 Scheduled maturities of time deposits in amounts of $100,000 or more, including both private and public funds, at December 31, 2020, were as follows: Due within 3 months or less $ 327,284 Due after 3 months and within 6 months 178,403 Due after 6 months and within 12 months 195,766 Due after 12 months 107,942 $ 809,395 |
Borrowed Funds
Borrowed Funds | 12 Months Ended |
Dec. 31, 2020 | |
Debt Disclosure [Abstract] | |
Borrowed Funds | Borrowed Funds Federal Funds Purchased and Securities Sold Under Agreements to Repurchase. Federal funds purchased are short-term borrowings that typically mature within one ninety thirty ninety Subordinated Notes Payable. In March 2017, we issued $100 million of 4.50% subordinated notes that mature on March 17, 2027. The notes, which qualify as Tier 2 capital for Cullen/Frost, bear interest at the rate of 4.50% per annum, payable semi-annually on each March 17 and September 17. The notes are unsecured and subordinated in right of payment to the payment of our existing and future senior indebtedness and structurally subordinated to all existing and future indebtedness of our subsidiaries. Unamortized debt issuance costs related to these notes, totaled approximately $979 thousand and $1.1 million December 31, 2020 and 2019. Proceeds from sale of the notes were used for general corporate purposes. Junior Subordinated Deferrable Interest Debentures. At December 31, 2020 and 2019, we had $123.7 million of junior subordinated deferrable interest debentures issued to Cullen/Frost Capital Trust II (“Trust II”), a wholly owned Delaware statutory business trust. Unamortized debt issuance costs related to Trust II totaled $758 thousand and $816 thousand at December 31, 2020 and 2019. At December 31, 2020 and 2019, we also had $13.4 million of junior subordinated deferrable interest debentures issued to WNB Capital Trust I (“WNB Trust”), a wholly owned Delaware statutory business trust acquired in connection with the acquisition of WNB Bancshares, Inc. (“WNB”) in 2014. Trust II and WNB Trust are variable interest entities for which we are not the primary beneficiary. As such, the accounts of Trust II and WNB Trust are not included in our consolidated financial statements. See Note 1 - Summary of Significant Accounting Policies for additional information about our consolidation policy. Details of our transactions with the capital trust are presented below. Trust II was formed in 2004 for the purpose of issuing $120.0 million of floating rate (three-month LIBOR plus a margin of 1.55%) trust preferred securities, which represent beneficial interests in the assets of the trust. The trust preferred securities will mature on March 1, 2034 and are currently redeemable with the approval of the Federal Reserve Board in whole or in part at our option. Distributions on the trust preferred securities are payable quarterly in arrears on March 1, June 1, September 1 and December 1 of each year. Trust II also issued $3.7 million of common equity securities to Cullen/Frost. The proceeds of the offering of the trust preferred securities and common equity securities were used to purchase $123.7 million of floating rate (three-month LIBOR plus a margin of 1.55%, which was equal to 1.78% and 3.46% at December 31, 2020 and 2019) junior subordinated deferrable interest debentures issued by us, which have terms substantially similar to the trust preferred securities. WNB Trust was formed in 2004 by WNB for the purpose of issuing $13.0 million of floating rate (three-month LIBOR plus a margin of 2.35%) trust preferred securities, which represent beneficial interests in the assets of the trust. The trust preferred securities will mature on July 23, 2034 and are currently redeemable with the approval of the Federal Reserve Board in whole or in part at our option. Distributions on the trust preferred securities are payable quarterly in arrears on January 23, April 23, July 23 and October 23 of each year. WNB Trust also issued $403 thousand of common equity securities to WNB. The proceeds of the offering of the trust preferred securities and common equity securities were used to purchase $13.4 million of floating rate (three-month LIBOR plus a margin of 2.35%, which was equal to 2.56% and 4.28% at December 31, 2020 and 2019) junior subordinated deferrable interest debentures issued by WNB, which have terms substantially similar to the trust preferred securities. We have the right at any time during the term of the debentures issued to Trust II and WNB Trust to defer payments of interest at any time or from time to time for an extension period not exceeding 20 consecutive quarterly periods with respect to each extension period. Under the terms of the debentures, in the event that under certain circumstances there is an event of default under the debentures or we have elected to defer interest on the debentures, we may not, with certain exceptions, declare or pay any dividends or distributions on our capital stock or purchase or acquire any of our capital stock. Payments of distributions on the trust preferred securities and payments on redemption of the trust preferred securities are guaranteed by us on a limited basis. We are obligated by agreement to pay any costs, expenses or liabilities of Trust II and WNB Trust other than those arising under the trust preferred securities. Our obligations under the junior subordinated debentures, the related indentures, the trust agreements establishing the trusts, the guarantees and the agreements as to expenses and liabilities, in the aggregate, constitute a full and unconditional guarantee by us of Trust II’s and WNB Trust's obligations under the trust preferred securities. Although the accounts of Trust II and WNB Trust are not included in our consolidated financial statements, the $120.0 million in trust preferred securities issued by Trust II and the $13.0 million in trust preferred securities issued by WNB Trust are included in the capital of Cullen/Frost for regulatory capital purposes as of December 31, 2020 and 2019. See Note 9 - Capital and Regulatory Matters. |
Off-Balance-Sheet Arrangements,
Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies | 12 Months Ended |
Dec. 31, 2020 | |
Commitments and Contingencies Disclosure [Abstract] | |
Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies | Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies Financial Instruments with Off-Balance-Sheet Risk . In the normal course of business, we enter into various transactions, which, in accordance with generally accepted accounting principles are not included in our consolidated balance sheets. We enter into these transactions to meet the financing needs of our customers. These transactions include commitments to extend credit and standby letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. We minimize our exposure to loss under these commitments by subjecting them to credit approval and monitoring procedures. We enter into contractual commitments to extend credit, normally with fixed expiration dates or termination clauses, at specified rates and for specific purposes. Substantially all of our commitments to extend credit are contingent upon customers maintaining specific credit standards at the time of loan funding. Standby letters of credit are written conditional commitments we issued to guarantee the performance of a customer to a third party. In the event the customer does not perform in accordance with the terms of the agreement with the third party, we would be required to fund the commitment. The maximum potential amount of future payments we could be required to make is represented by the contractual amount of the commitment. If the commitment were funded, we would be entitled to seek recovery from the customer. Our policies generally require that standby letter of credit arrangements contain security and debt covenants similar to those contained in loan agreements. We consider the fees collected in connection with the issuance of standby letters of credit to be representative of the fair value of our obligation undertaken in issuing the guarantee. In accordance with applicable accounting standards related to guarantees, we defer fees collected in connection with the issuance of standby letters of credit. The fees are then recognized in income proportionately over the life of the standby letter of credit agreement. The deferred standby letter of credit fees represent the fair value of our potential obligations under the standby letter of credit guarantees. Year-end financial instruments with off-balance-sheet risk were as follows: 2020 2019 Commitments to extend credit $ 9,814,475 $ 9,306,043 Standby letters of credit 241,345 260,587 Deferred standby letter of credit fees 1,723 1,276 Allowance For Credit Losses - Off-Balance-Sheet Credit Exposures. The allowance for credit losses on off-balance-sheet credit exposures is a liability account, calculated in accordance with ASC 326, representing expected credit losses over the contractual period for which we are exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if we have the unconditional right to cancel the obligation. Off-balance-sheet credit exposures primarily consist of amounts available under outstanding lines of credit and letters of credit detailed in the table above. For the period of exposure, the estimate of expected credit losses considers both the likelihood that funding will occur and the amount expected to be funded over the estimated remaining life of the commitment or other off-balance-sheet exposure. The likelihood and expected amount of funding are based on historical utilization rates. The amount of the allowance represents management's best estimate of expected credit losses on commitments expected to be funded over the contractual life of the commitment. Estimating credit losses on amounts expected to be funded uses the same methodology as described for loans in Note 3 - Loans as if such commitments were funded. The following table details activity in the allowance for credit losses on off-balance-sheet credit exposures. 2020 2019 2018 Beginning balance $ 500 $ 500 $ 428 Impact of adopting ASC 326 39,377 — — Credit loss expense 4,275 — 72 Ending balance $ 44,152 $ 500 $ 500 Credit Card Guarantees . We guarantee the credit card debt of certain customers to the merchant bank that issues the cards. At December 31, 2020 and 2019, the guarantees totaled approximately $9.1 million and $8.5 million, of which amounts, $8.2 million and $1.3 million were fully collateralized. Change-In-Control Agreements . We have change-in-control agreements with certain executive officers. Under these agreements, each covered person could receive, upon the effectiveness of a change-in-control, two to three times (depending on the person) their base compensation plus the target bonus established for the year, and any unpaid base salary and pro rata target bonus for the year in which the termination occurs, including vacation pay. Additionally, the executive’s insurance benefits will continue for two to three full years after the termination and all long-term incentive awards will immediately vest. Litigation . We are subject to various claims and legal actions that have arisen in the course of conducting business. Management does not expect the ultimate disposition of these matters to have a material adverse impact on our financial statements. In May of 2020, a purported class action lawsuit was filed against Frost Bank in a Texas Federal court alleging that Frost Bank had refused to pay agent fees to purported agents of borrowers under the PPP in violation of SBA regulations. The Plaintiff's motion to dismiss the Federal lawsuit was effected and as a result the Federal lawsuit is resolved. In July 2020, a purported class action lawsuit was filed against Frost Bank in a California Federal court alleging that Frost Bank had refused to pay agent fees to purported agents of borrowers under the PPP in violation of SBA regulations. The Plaintiff subsequently filed a motion to dismiss the lawsuit and the lawsuit was thereby resolved. In October 2020, a lawsuit was filed against Frost Bank in Texas State court alleging, among other claims, that Frost Bank had refused to provide a PPP loan to the purported applicant. Frost Bank removed the lawsuit to Federal court, and the presiding Federal judge subsequently dismissed the lawsuit with prejudice. |
Capital and Regulatory Matters
Capital and Regulatory Matters | 12 Months Ended |
Dec. 31, 2020 | |
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] | |
Capital and Regulatory Matters | Capital and Regulatory Matters Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weighting and other factors. Cullen/Frost and Frost Bank are each required to comply with applicable capital adequacy standards established by the Federal Reserve Board (the “Basel III Capital Rules”). Quantitative measures established by the Basel III Capital Rules designed to ensure capital adequacy require the maintenance of minimum amounts and ratios (set forth below) of Common Equity Tier 1 capital, Tier 1 capital and Total capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 capital to adjusted quarterly average assets (as defined). Cullen/Frost’s and Frost Bank’s Common Equity Tier 1 capital includes common stock and related paid-in capital, net of treasury stock, and retained earnings. In connection with the adoption of the Basel III Capital Rules, we elected to opt-out of the requirement to include most components of accumulated other comprehensive income in Common Equity Tier 1. We also elected, for a five Tier 1 capital includes Common Equity Tier 1 capital and additional Tier 1 capital. For Cullen/Frost, additional Tier 1 capital at December 31, 2020 included $145.5 million of 4.450% non-cumulative perpetual preferred stock and, at December 31, 2019, $144.5 million of 5.375% non-cumulative perpetual preferred stock, the details of which is are further discussed below. Frost Bank did not have any additional Tier 1 capital beyond Common Equity Tier 1 at December 31, 2020 or 2019. Total capital includes Tier 1 capital and Tier 2 capital. Tier 2 capital for both Cullen/Frost and Frost Bank includes a permissible portion of the allowance for credit losses on securities, loans and off-balance sheet exposures. Tier 2 capital for Cullen/Frost also includes trust preferred securities that were excluded from Tier 1 capital and qualified subordinated debt. At both December 31, 2020 and 2019, Cullen/Frost's Tier 2 capital included $133.0 million of trust preferred securities. At both December 31, 2020 and 2019, Tier 2 Capital for Cullen/Frost also included $100.0 million related to the permissible portion of our aggregate $100 million of 4.50% subordinated notes. The permissible portion of qualified subordinated notes decreases 20% per year during the final five The Common Equity Tier 1, Tier 1 and Total capital ratios are calculated by dividing the respective capital amounts by risk-weighted assets. Risk-weighted assets are calculated based on regulatory requirements and include total assets, with certain exclusions, allocated by risk weight category, and certain off-balance-sheet items, among other things. The leverage ratio is calculated by dividing Tier 1 capital by adjusted quarterly average total assets, which exclude goodwill and other intangible assets, among other things. The Basel III Capital Rules require Cullen/Frost and Frost Bank to maintain (i) a minimum ratio of Common Equity Tier 1 capital to risk-weighted assets of at least 4.5%, plus a 2.5% “capital conservation buffer” (which is added to the 4.5% Common Equity Tier 1 capital ratio, effectively resulting in a minimum ratio of Common Equity Tier 1 capital to risk-weighted assets of at least 7.0%), (ii) a minimum ratio of Tier 1 capital to risk-weighted assets of at least 6.0%, plus the capital conservation buffer (which is added to the 6.0% Tier 1 capital ratio, effectively resulting in a minimum Tier 1 capital ratio of 8.5%), (iii) a minimum ratio of Total capital (that is, Tier 1 plus Tier 2) to risk-weighted assets of at least 8.0%, plus the capital conservation buffer (which is added to the 8.0% total capital ratio, effectively resulting in a minimum total capital ratio of 10.5%) and (iv) a minimum leverage ratio of 4.0%, calculated as the ratio of Tier 1 capital to average quarterly assets. The capital conservation buffer is designed to absorb losses during periods of economic stress and, as detailed above, effectively increases the minimum required risk-weighted capital ratios. Banking institutions with a ratio of Common Equity Tier 1 capital to risk-weighted assets below the effective minimum (4.5% plus the capital conservation buffer and, if applicable, the “countercyclical capital buffer,” which is discussed below) will face constraints on dividends, equity repurchases and compensation based on the amount of the shortfall and the institution's “eligible retained income” (that is, four quarter trailing net income, net of distributions and tax effects not reflected in net income). The countercyclical capital buffer is applicable to only certain covered institutions and does not have any current applicability to Cullen/Frost or Frost Bank. As discussed in Note 1 - Significant Accounting Policies, in connection with the adoption of ASC 326, we recognized an after-tax cumulative effect reduction to retained earnings totaling $29.3 million on January 1, 2020. In February 2019, the federal bank regulatory agencies issued a final rule (the “2019 CECL Rule”) that revised certain capital regulations to account for changes to credit loss accounting under U.S. GAAP. The 2019 CECL Rule included a transition option that allows banking organizations to phase in, over a three-year period, the day-one adverse effects of CECL on their regulatory capital ratios (three-year transition option). In March 2020, the federal bank regulatory agencies issued an interim final rule that maintains the three-year transition option of the 2019 CECL Rule and also provides banking organizations that were required under U.S. GAAP (as of January 2020) to implement CECL before the end of 2020 the option to delay for two years an estimate of the effect of CECL on regulatory capital, relative to the incurred loss methodology’s effect on regulatory capital, followed by a three-year transition period ( five five In April 2020, we began originating loans to qualified small businesses under the PPP administered by the SBA. Federal bank regulatory agencies have issued an interim final rule that permits banks to neutralize the regulatory capital effects of participating in the Paycheck Protection Program Lending Facility (the “PPP Facility”) and clarify that PPP loans have a zero percent risk weight under applicable risk-based capital rules. Specifically, a bank may exclude all PPP loans pledged as collateral to the PPP Facility from its average total consolidated assets for the purposes of calculating its leverage ratio, while PPP loans that are not pledged as collateral to the PPP Facility will be included. Our PPP loans are included in the calculation of our leverage ratio as of December 31, 2020 as we did not utilize the PPP Facility for funding purposes. The following table presents actual and required capital ratios as of December 31, 2020 and December 31, 2019 for Cullen/Frost and Frost Bank under the Basel III Capital Rules. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Actual Minimum Capital Required - Basel III Fully Phased-In Required to be Capital Ratio Capital Ratio Capital Ratio 2020 Common Equity Tier 1 to Risk-Weighted Assets Cullen/Frost $ 3,058,447 12.86 % $ 1,664,867 7.00 % $ 1,545,948 6.50 % Frost Bank 3,030,093 12.77 1,661,620 7.00 1,542,933 6.50 Tier 1 Capital to Risk-Weighted Assets Cullen/Frost 3,203,899 13.47 2,021,624 8.50 1,902,705 8.00 Frost Bank 3,030,093 12.77 2,017,682 8.50 1,898,995 8.00 Total Capital to Risk-Weighted Assets Cullen/Frost 3,672,912 15.44 2,497,300 10.50 2,378,381 10.00 Frost Bank 3,266,106 13.76 2,492,430 10.50 2,373,743 10.00 Leverage Ratio Cullen/Frost 3,203,899 8.07 1,589,004 4.00 1,986,255 5.00 Frost Bank 3,030,093 7.63 1,588,200 4.00 1,985,250 5.00 2019 Common Equity Tier 1 to Risk-Weighted Assets Cullen/Frost $ 2,857,250 12.36 % $ 1,617,886 7.00 % $ 1,502,323 6.50 % Frost Bank 2,958,326 12.82 1,615,206 7.00 1,499,834 6.50 Tier 1 Capital to Risk-Weighted Assets Cullen/Frost 3,001,736 12.99 1,964,576 8.50 1,849,013 8.00 Frost Bank 2,958,326 12.82 1,961,322 8.50 1,845,950 8.00 Total Capital to Risk-Weighted Assets Cullen/Frost 3,367,403 14.57 2,426,829 10.50 2,311,266 10.00 Frost Bank 3,090,993 13.40 2,422,809 10.50 2,307,438 10.00 Leverage Ratio Cullen/Frost 3,001,736 9.28 1,293,188 4.00 1,616,485 5.00 Frost Bank 2,958,326 9.15 1,292,743 4.00 1,615,929 5.00 As of December 31, 2020, capital levels for Cullen/Frost and Frost Bank exceed all capital adequacy requirements under the Basel III Capital Rules. Based on the ratios presented above, capital levels as of December 31, 2020 for Cullen/Frost and Frost Bank exceed the minimum levels necessary to be considered “well capitalized.” Cullen/Frost and Frost Bank are subject to the regulatory capital requirements administered by the Federal Reserve Board and, for Frost Bank, the Federal Deposit Insurance Corporation (“FDIC”). Regulatory authorities can initiate certain mandatory actions if Cullen/Frost or Frost Bank fail to meet the minimum capital requirements, which could have a direct material effect on our financial statements. Management believes, as of December 31, 2020, that Cullen/Frost and Frost Bank meet all capital adequacy requirements to which they are subject. Series B Preferred Stock. On November 19, 2020, we issued 150,000 shares, or $150.0 million in aggregate liquidation preference, of our 4.450% Non-Cumulative Perpetual Preferred Stock, Series B, par value $0.01 and liquidation preference $1,000 per share (“Series B Preferred Stock”). Each share of Series B Preferred Stock issued and outstanding is represented by 40 depositary shares, each representing a 1/40th ownership interest in a share of the Series B Preferred Stock (equivalent to a liquidation preference of $25 per share). Each holder of depositary shares will be entitled, in proportion to the applicable fraction of a share of Series B Preferred Stock represented by such depositary shares, to all rights and preferences of the Series B Preferred Stock represented thereby (including dividend, voting, redemption, and liquidation rights). Such rights must be exercised through the depositary. Dividends on the Series B Preferred Stock will be non-cumulative and, if declared, accrue and are payable quarterly, in arrears, at a rate of 4.450% per annum. The Series B Preferred Stock qualifies as Tier 1 capital for the purposes of the regulatory capital calculations. The net proceeds from the issuance and sale of the Series B Preferred Stock, after deducting $4.5 million of issuance costs including the underwriting discount and professional service fees, among other things, were approximately $145.5 million. The Series B Preferred Stock is perpetual and has no maturity date. We may redeem the Series B Preferred Stock at our option (i) in whole or in part, from time to time, on any dividend payment date on or after December 15, 2025 or (ii) in whole but not in part, within 90 days following certain changes in laws or regulations impacting the regulatory capital treatment of the Series B Preferred Stock, in either case, at a redemption price equal to $1,000 per share of Series B Preferred Stock (equivalent to $25 per depositary share), plus any declared and unpaid dividends for prior dividend periods and accrued but unpaid dividends (whether or not declared) for the then-current dividend period prior to but excluding the redemption date. If we redeem the Series B Preferred Stock, the depositary is expected redeem a proportionate number of depositary shares. Neither the holders of Series B Preferred Stock nor holders of depositary shares will have the right to require the redemption or repurchase of the Series B Preferred Stock or the depositary shares. Series A Preferred Stock. On February 15, 2013, we issued and sold 6,000,000 shares, or $150.0 million in aggregate liquidation preference, of our 5.375% Non-Cumulative Perpetual Preferred Stock, Series A, par value $0.01 and liquidation preference $25 per share (“Series A Preferred Stock”). On March 16, 2020, we redeemed all of the outstanding shares of our Series A Preferred Stock at a redemption price of $25 per share, or an aggregate redemption of $150.0 million. When issued, the net proceeds of the Series A Preferred Stock totaled $144.5 million after deducting $5.5 million of issuance costs including the underwriting discount and professional service fees, among other things. Upon redemption, these issuance costs were reclassified to retained earnings and reported as a reduction of net income available to common shareholders. Prior to redemption, dividends on the Series A Preferred Stock were paid quarterly, in arrears, at a rate of 5.375% per annum and the Series A Preferred Stock qualified as Tier 1 capital for the purposes of regulatory capital calculations. Stock Repurchase Plans. From time to time, our board of directors has authorized stock repurchase plans. In general, stock repurchase plans allow us to proactively manage our capital position and return excess capital to shareholders. Shares purchased under such plans also provide us with shares of common stock necessary to satisfy obligations related to stock compensation awards. On July 24, 2019, our board of directors authorized a $100.0 million stock repurchase program, allowing us to repurchase shares of our common stock over a one Dividend Restrictions . In the ordinary course of business, Cullen/Frost is dependent upon dividends from Frost Bank to provide funds for the payment of dividends to shareholders and to provide for other cash requirements, including to repurchase its common stock. Banking regulations may limit the amount of dividends that may be paid. Approval by regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of Frost Bank to fall below specified minimum levels. Approval is also required if dividends declared exceed the net profits for that year combined with the retained net profits for the preceding two years. Under the foregoing dividend restrictions and while maintaining its “well capitalized” status, at December 31, 2020, Frost Bank could pay aggregate dividends of up to $503.9 million to Cullen/Frost without prior regulatory approval. Under the terms of the junior subordinated deferrable interest debentures that Cullen/Frost has issued to Cullen/Frost Capital Trust II and WNB Capital Trust I, Cullen/Frost has the right at any time during the term of the debentures to defer the payment of interest at any time or from time to time for an extension period not exceeding 20 consecutive quarterly periods with respect to each extension period. In the event that we have elected to defer interest on the debentures, we may not, with certain exceptions, declare or pay any dividends or distributions on our capital stock or purchase or acquire any of our capital stock. Under the terms of the Series B Preferred Stock, in the event that we do not declare and pay dividends on the Series B Preferred Stock for the most recent dividend period, we may not, with certain exceptions, declare or pay dividends on, or purchase, redeem or otherwise acquire, shares of our common stock or any of our securities that rank junior to the Series B Preferred Stock. |
Earnings Per Common Share
Earnings Per Common Share | 12 Months Ended |
Dec. 31, 2020 | |
Earnings Per Share [Abstract] | |
Earnings Per Common Share | Earnings Per Common Share Earnings Per Common Share . Earnings per common share is computed using the two-class method. Basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include non-vested stock awards/stock units, deferred stock units and performance stock units (during the performance period), though no actual shares of common stock related to any type of stock unit have been issued. Non-vested stock awards/stock units and deferred stock units are considered participating securities because holders of these securities receive non-forfeitable dividends at the same rate as holders of our common stock. Holders of performance stock units receive dividend equivalent payments for dividends paid during the performance period at the vesting date of the award based upon the number of units that ultimately vest. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. The following table presents a reconciliation of net income available to common shareholders, net earnings allocated to common stock and the number of shares used in the calculation of basic and diluted earnings per common share. 2020 2019 2018 Net Income $ 331,151 $ 443,599 $ 454,918 Less: Preferred stock dividends 2,016 8,063 8,063 Redemption of preferred stock 5,514 — — Net income available to common shareholders 323,621 435,536 446,855 Less: Earnings allocated to participating securities 3,136 3,687 3,169 Net earnings allocated to common stock $ 320,485 $ 431,849 $ 443,686 Distributed earnings allocated to common stock $ 178,863 $ 175,540 $ 164,268 Undistributed earnings allocated to common stock 141,622 256,309 279,418 Net earnings allocated to common stock $ 320,485 $ 431,849 $ 443,686 Weighted-average shares outstanding for basic earnings per common share 62,727,053 62,741,769 63,704,508 Dilutive effect of stock compensation 276,784 700,101 982,208 Weighted-average shares outstanding for diluted earnings per common share 63,003,837 63,441,870 64,686,716 |
Employee Benefit Plans
Employee Benefit Plans | 12 Months Ended |
Dec. 31, 2020 | |
Retirement Benefits [Abstract] | |
Employee Benefit Plans | Employee Benefit Plans Retirement Plans Profit Sharing Plans. Prior to 2019, we maintained a qualified defined contribution profit sharing plan that covered employees who had completed at least one year of service and were age 21 or older. The Plan was merged with and into our 401(k) plan effective January 1, 2019, as further discussed below. Expense related to this plan totaled $11.9 million in 2018. We continue to maintain a separate non-qualified profit sharing plan for certain employees whose participation in the qualified profit sharing plan was limited. The plan offers such employees an alternative means of receiving comparable benefits. Expense related to this plan was not significant during 2020, 2019 and 2018. Retirement Plan and Restoration Plan. We maintain a non-contributory defined benefit plan (the “Retirement Plan”) that was frozen as of December 31, 2001. The plan provides pension and death benefits to substantially all employees who were at least 21 years of age and had completed at least one year of service prior to December 31, 2001. Defined benefits are provided based on an employee’s final average compensation and years of service at the time the plan was frozen and age at retirement. The freezing of the plan provides that future salary increases will not be considered. Our funding policy is to contribute yearly, at least the amount necessary to satisfy the funding standards of the Employee Retirement Income Security Act (“ERISA”). Our Restoration of Retirement Income Plan (the “Restoration Plan”) provides benefits for eligible employees that are in excess of the limits under Section 415 of the Internal Revenue Code of 1986, as amended, that apply to the Retirement Plan. The Restoration Plan is designed to comply with the requirements of ERISA. The entire cost of the plan, which was also frozen as of December 31, 2001, is supported by our contributions. We use a December 31 measurement date for our defined benefit plans. Combined activity in our defined benefit pension plans was as follows: 2020 2019 2018 Change in plan assets: Fair value of plan assets at beginning of year $ 174,173 $ 152,820 $ 168,450 Actual return on plan assets 16,599 29,945 (7,739) Employer contributions 1,201 1,163 1,077 Benefits paid (9,885) (9,755) (8,968) Fair value of plan assets at end of year 182,088 174,173 152,820 Change in benefit obligation: Benefit obligation at beginning of year 186,641 167,107 182,607 Interest cost 5,010 6,472 5,898 Actuarial (gain) loss 15,827 22,817 (12,430) Benefits paid (9,885) (9,755) (8,968) Benefit obligation at end of year 197,593 186,641 167,107 Funded status of the plan at end of year and accrued benefit (liability) recognized $ (15,505) $ (12,468) $ (14,287) Accumulated benefit obligation at end of year $ 197,593 $ 186,641 $ 167,107 Certain disaggregated information related to our defined benefit pension plans as of year-end was as follows: Retirement Plan Restoration Plan 2020 2019 2020 2019 Projected benefit obligation $ 180,986 $ 170,541 $ 16,607 $ 16,100 Accumulated benefit obligation 180,986 170,541 16,607 16,100 Fair value of plan assets 182,088 174,173 — — Funded status of the plan at end of year and accrued benefit (liability) recognized 1,102 3,632 (16,607) (16,100) The components of the combined net periodic cost (benefit) for our defined benefit pension plans are presented in the table below. 2020 2019 2018 Expected return on plan assets, net of expenses $ (12,289) $ (10,772) $ (11,916) Interest cost on projected benefit obligation 5,010 6,472 5,898 Net amortization and deferral 5,319 5,623 5,002 Net periodic expense (benefit) $ (1,960) $ 1,323 $ (1,016) Amounts related to our defined benefit pension plans recognized as a component of other comprehensive income were as follows: 2020 2019 2018 Net actuarial gain (loss) $ (6,199) $ 1,979 $ (2,223) Deferred tax (expense) benefit 1,302 (416) 466 Other comprehensive income (loss), net of tax $ (4,897) $ 1,563 $ (1,757) Amounts recognized as a component of accumulated other comprehensive loss as of year-end that have not been recognized as a component of the combined net periodic benefit cost of our defined benefit pension plans are presented in the following table. We expect to recognize approximately $6.1 million of the net actuarial loss reported in the following table as of December 31, 2020 as a component of net periodic benefit cost during 2021. 2020 2019 Net actuarial loss $ (64,343) $ (57,964) Deferred tax benefit 13,512 12,210 Amounts included in accumulated other comprehensive income/loss, net of tax (50,831) (45,934) The weighted-average assumptions used to determine the benefit obligations as of the end of the years indicated and the net periodic benefit cost for the years indicated are presented in the table below. Because the plans were frozen, increases in compensation are not considered after 2001. 2020 2019 2018 Benefit obligations: Discount rate 2.43 % 3.20 % 4.36 % Net periodic benefit cost: Discount rate 3.20 % 4.36 % 3.68 % Expected return on plan assets 7.25 7.25 7.25 Management uses an asset allocation optimization model to analyze the potential risks and rewards associated with various asset allocation strategies on a quarterly basis. As of December 31, 2020, management’s investment objective for our defined benefit plans is to achieve long-term growth. This strategy provides for a target asset allocation of approximately 62% invested in equity securities, approximately 36% invested in fixed income debt securities with any remainder invested in cash or short-term cash equivalents. The asset allocation optimization process provides portfolio allocations which best represent the potential risk associated with a given asset allocation over a full market cycle. This is used to help management determine an appropriate mix of assets in order to achieve the plan's long term investment goals. The plan assets are reviewed annually to determine if the obligations can be met with the current investment mix and funding strategy. The major categories of assets in our Retirement Plan as of year-end are presented in the following table. Assets are segregated by the level of the valuation inputs within the fair value hierarchy established by ASC Topic 820 “Fair Value Measurements and Disclosures,” utilized to measure fair value (see Note 17 - Fair Value Measurements). Our Restoration Plan is unfunded. 2020 2019 Level 1: Mutual funds $ 180,693 $ 172,773 Cash and cash equivalents 1,395 1,400 Total fair value of plan assets $ 182,088 $ 174,173 Mutual funds include various equity, fixed-income and blended funds with varying investment strategies. Approximately 66% of mutual fund investments consist of equity investments as of December 31, 2020. The investment objective of equity funds is long-term capital appreciation with current income. The remaining mutual fund investments consist of U.S. fixed-income securities, including investment-grade U.S. Treasury securities, U.S. government agency securities and mortgage-backed securities, corporate bonds and notes and collateralized mortgage obligations. The investment objective of fixed-income funds is to maximize investment return while preserving investment principal. U.S. government agency securities include obligations of Ginnie Mae. Our investment strategies prohibit selling assets short and the use of derivatives. Additionally, our defined benefit plans do not directly invest in real estate, commodities, or private investments. The asset allocation optimization model is used to estimate the expected long-term rate of return for a given asset allocation strategy. Expectations of returns for each asset class are based on comprehensive reviews of historical data and economic/financial market theory. During periods with volatile interest rates and equity security prices, the model may call for changes in the allocation of plan investments to achieve desired returns. Management assumed a long-term rate of return of 7.25% in the determination of the net periodic benefit cost for 2020. The expected long-term rate of return on assets was selected from within the reasonable range of rates determined by historical real returns, net of inflation, for the asset classes covered by the plan’s investment policy and projections of inflation over the long-term period during which benefits are payable to plan participants. As of December 31, 2020, expected future benefit payments related to our defined benefit plans were as follows: 2021 $ 11,315 2022 11,507 2023 11,668 2024 11,800 2025 11,880 2026 through 2030 57,248 $ 115,418 We expect to contribute $1.2 million to the defined benefit plans during 2021. Savings Plans 401(k) Plan and Thrift Incentive Plan. We maintain a 401(k) stock purchase plan that permits each participant to make before-tax contributions in an amount not less than 2% and not exceeding 50% of eligible compensation and subject to dollar limits from Internal Revenue Service regulations. We match 100% of the employee’s contributions to the plan based on the amount of each participant’s contributions up to a maximum of 6% of eligible compensation. Eligible employees must complete 30 days of service in order to enroll and vest in our matching contributions immediately. Our matching contribution is initially invested in the Cullen/Frost common stock fund. However, employees may immediately reallocate our matching portion, as well as invest their individual contribution, to any of a variety of investment alternatives offered under the 401(k) Plan. In 2019, we merged our qualified profit sharing plan with and into the 401(k) plan. All profit contributions to the plan are made at our discretion and may be made without regard to current or accumulated profits. Contributions are allocated to eligible participants uniformly, based upon compensation, age and other factors. Plan participants self-direct the investment of allocated contributions by choosing from a menu of investment options. Profit sharing contributions are subject to withdrawal restrictions and participants vest in their allocated contributions after three years of service. Expense related to the plan totaled $16.0 million, which was primarily related to matching contributions, in 2020, $28.9 million ($16.3 million matching contributions and $12.6 million profit sharing) in 2019, and $15.0 million in 2018. We maintain a thrift incentive stock purchase plan to offer certain employees whose participation in the 401(k) plan is limited an alternative means of receiving comparable benefits. Expense related to this plan was not significant during 2020, 2019 and 2018. Stock Compensation Plans We have three active stock compensation plans (the 2005 Omnibus Incentive Plan, the 2007 Outside Directors Incentive Plan and the 2015 Omnibus Incentive Plan). All of the plans have been approved by our shareholders. During 2015, the 2015 Omnibus Incentive Plan (“2015 Plan”) was established to replace both the 2005 Omnibus Incentive Plan (“2005 Plan”) and the 2007 Outside Directors Incentive Plan (the “2007 Directors Plan”). All remaining shares authorized for grant under the superseded 2005 Plan and 2007 Directors Plan were transferred to the 2015 Plan. Our stock compensation plans were established to (i) motivate superior performance by means of performance-related incentives, (ii) encourage and provide for the acquisition of an ownership interest in our company by employees and non-employee directors and (iii) enable us to attract and retain qualified and competent persons as employees and to serve as members of our board of directors. Under the 2015 Plan, we may grant, among other things, nonqualified stock options, incentive stock options, stock awards, stock appreciation rights, restricted stock units, performance share units or any combination thereof to certain employees and non-employee directors. Any of the authorized shares may be used for any type of award allowable under the Plan. The Compensation and Benefits Committee (“Committee”) of our Board of Directors has sole authority to (i) establish the awards to be issued, (ii) select the employees and non-employee directors to receive awards, and (iii) approve the terms and conditions of each award contract. Each award under the stock plans is evidenced by an award agreement that specifies the award price, the duration of the award, the number of shares to which the award pertains, and such other provisions as the Committee determines. For stock options, the option price for each grant is at least equal to the fair market value of a share of Cullen/Frost’s common stock on the date of grant. Options granted expire at such time as the Committee determines at the date of grant and in no event does the exercise period exceed a maximum of ten years. As defined in the plans, outstanding awards may immediately vest upon a change-in-control of Cullen/Frost and, in the case of awards granted under the 2015 Plan, subsequent termination resulting from the change in control. A combined summary of activity in our active stock plans is presented in the table. Performance stock units outstanding are presented assuming attainment of the maximum payout rate as set forth by the performance criteria. The target award level for performance stock units granted in 2020, 2019 and 2018 was 48,409, 34,317 and 30,466, respectively. As of December 31, 2020, there were 887,189 shares remaining available for grant for future awards. Director Deferred Non-Vested Stock Performance Stock Units Outstanding Stock Options Number of Units Weighted- Number Weighted- Number of Units Weighted- Number Weighted- January 1, 2018 53,008 $ 64.87 312,656 $ 81.71 80,106 $ 79.91 2,917,142 $ 63.34 Granted 6,576 109.58 109,847 94.81 45,703 87.18 — — Exercised/vested (10,674) 63.68 (32,050) 78.92 — — (513,134) 61.68 Forfeited/expired — — (6,656) 87.60 — — (52,000) 70.42 December 31, 2018 48,910 71.14 383,797 85.59 125,809 82.55 2,352,008 63.55 Granted 7,592 102.70 127,091 93.46 51,479 85.74 — — Exercised/vested (1,132) 106.03 (53,990) 65.11 — — (359,892) 57.71 Forfeited/expired — — (16,251) 89.71 — — (11,250) 65.11 December 31, 2019 55,370 74.76 440,647 90.22 177,288 83.48 1,980,866 64.60 Granted 10,428 73.84 151,038 66.79 72,618 57.89 — — Exercised/vested (12,938) 71.09 (117,990) 76.07 (41,755) 69.70 (235,880) 53.23 Forfeited/expired — — (3,336) 91.07 (6,894) 81.33 (5,427) 75.74 December 31, 2020 52,860 75.47 470,359 86.24 201,257 77.18 1,739,559 66.11 Options awarded to employees generally have a ten four four Performance stock units represent shares potentially issuable in the future. Issuance is based upon the measure of our achievement of relative return on assets over a three-year performance period compared to an identified peer group's achievement of relative return on assets over the same three-year performance period. The ultimate number of shares issuable under each performance award is the product of the award target and the award payout percentage for the given level of achievement. The level of achievement is measured as the percentile rank of relative return on assets among the peer group. The award payout percentages by level of achievement are as follows: (i) less than 25th percentile pays out at 0% of target, (ii) 25th percentile pays out at 50% of target, (iii) 50th percentile pays out at 100% of target and (iv) 75th percentile or more pays out at 150% of target. Achievement between the aforementioned percentiles will result in an award payout percentage determined based on straight-line interpolation between the percentiles. Performance stock units are eligible to receive equivalent dividend payments as such dividends are declared on our common stock during the performance period. Equivalent dividend payments are based upon the ultimate number of shares issued under each performance award and are deferred until such time that the units vest and shares are issued. Other information regarding options outstanding and exercisable as of December 31, 2020 is as follows: Options Outstanding Options Exercisable Range of Number Weighted- Weighted- Number Weighted- $ 45.01 to $ 50.00 204,480 $ 48.00 0.82 204,480 $ 48.00 50.01 to 55.00 282,204 54.56 1.81 282,204 54.56 65.01 to 70.00 509,221 65.11 4.67 509,221 65.11 70.01 to 75.00 275,654 71.39 2.80 275,654 71.39 75.01 to 80.00 468,000 78.95 3.74 468,000 78.95 Total 1,739,559 66.11 3.21 1,739,559 66.11 Total intrinsic value $ 36,745 $ 36,745 Shares issued in connection with stock compensation awards are issued from available treasury shares. If no treasury shares are available, new shares are issued from available authorized shares. Shares issued in connection with stock compensation awards along with other related information were as follows: 2020 2019 2018 Shares issued from available treasury stock 408,563 399,224 548,238 Proceeds from stock option exercises $ 12,557 $ 20,770 $ 31,647 Intrinsic value of stock options exercised 5,365 13,713 23,292 Fair value of stock awards/units vested 9,465 5,192 4,212 Stock-based Compensation Expense. Stock-based compensation expense is recognized ratably over the requisite service period for all awards. For most stock option awards, the service period generally matches the vesting period. For stock options granted to certain executive officers and for non-vested stock units granted to all participants, the service period does not extend past the date the participant reaches 65 years of age. Deferred stock units granted to non-employee directors generally have immediate vesting and the related expense is fully recognized on the date of grant. For performance stock units, the service period generally matches the three-year performance period specified by the award, however, the service period does not extend past the date the participant reaches 65 years of age. Expense recognized each period is dependent upon our estimate of the number of shares that will ultimately be issued. Stock-based compensation expense and the related income tax benefit is presented in the following table. The service period for performance stock units granted each year begins on January 1 of the following year. 2020 2019 2018 Stock options $ — $ 1,185 $ 3,652 Non-vested stock awards/stock units 10,240 9,339 6,983 Deferred stock-units 770 780 721 Performance stock units 2,908 4,642 2,587 Total $ 13,918 $ 15,946 $ 13,943 Income tax benefit $ 2,142 $ 2,359 $ 2,831 Unrecognized stock-based compensation expense and the weighted-average period over which the expense is expected to be recognized at December 31, 2020 is presented in the table below. Unrecognized stock-based compensation expense related to performance stock units is presented assuming attainment of the maximum payout rate as set forth by the performance criteria. Unrecognized Expense Weighted-Average Number of Years for Expense Recognition Non-vested stock awards/stock units $ 18,430 2.69 Performance stock units 7,034 1.99 Total $ 25,464 Valuation of Stock-Based Compensation . For the purposes of recognizing stock-based compensation expense, the fair value of non-vested stock awards/stock units and deferred stock units is generally the market price of the stock on the measurement date, which, for us, is the date of the award. The fair value of performance stock units is determined in a similar manner except that the market price of the stock on the measurement date is discounted by the present value of the dividends expected to be paid on our common stock during the service period of the award because dividend equivalent payments on performance stock units are deferred until such time that the units vest and shares are issued. In applying this discount to the market price of our stock on the measurement date, we assumed we would pay a flat quarterly dividend during the service period equal to our most recent dividend payment, which was $0.72, $0.71 and $0.67 in 2020, 2019, and 2018 respectively discounted at a weighted-average risk-free rate of 0.19%, 1.65% and 2.95% in 2020, 2019, and 2018 respectively. |
Other Non-Interest Income and E
Other Non-Interest Income and Expense | 12 Months Ended |
Dec. 31, 2020 | |
Other Income and Expenses [Abstract] | |
Other Non-Interest Income and Expense | Other Non-Interest Income and Expense Other non-interest income and expense totals are presented in the following tables. Components of these totals exceeding 1% of the aggregate of total net interest income and total non-interest income for any of the years presented are stated separately. 2020 2019 2018 Other non-interest income: Other $ 47,712 $ 43,563 $ 46,790 Total $ 47,712 $ 43,563 $ 46,790 Other non-interest expense: Professional services $ 37,253 $ 39,238 $ 35,941 Advertising, promotions and public relations 34,390 38,001 32,514 Travel/meals and entertainment 7,109 16,459 15,030 Other 87,558 86,967 89,981 Total $ 166,310 $ 180,665 $ 173,466 In the ordinary course of business, we transact with certain directors and/or their affiliates. Payments for services provided totaled $551 thousand in 2020, $567 thousand in 2019 and $568 thousand in 2018. |
Income Taxes
Income Taxes | 12 Months Ended |
Dec. 31, 2020 | |
Income Tax Disclosure [Abstract] | |
Income Taxes | Income Taxes Income tax expense was as follows: 2020 2019 2018 Current income tax expense $ 36,002 $ 48,256 $ 840 Deferred income tax expense (benefit) (15,832) 7,614 52,923 Income tax expense, as reported $ 20,170 $ 55,870 $ 53,763 Effective tax rate 5.7 % 11.2 % 10.6 % A reconciliation between reported income tax expense and the amounts computed by applying the U.S. federal statutory income tax rate of 21% to income before income taxes is presented in the following table. 2020 2019 2018 Income tax expense computed at the statutory rate $ 73,777 $ 104,888 $ 106,823 Effect of tax-exempt interest (51,624) (49,166) (49,700) Tax benefit on dividends paid in our 401k plan (1,851) (1,743) (1,551) Bank owned life insurance income (783) (774) (710) Non-deductible compensation 1,123 1,708 210 Non-deductible FDIC premiums 1,790 1,267 1,771 Non-deductible meals and entertainment 786 1,299 1,193 Net tax benefit from stock-based compensation (852) (2,447) (3,865) Asset contribution to a charitable trust (2,556) — — Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate — — (231) Other 360 838 (177) Income tax expense, as reported $ 20,170 $ 55,870 $ 53,763 There were no unrecognized tax benefits during any of the reported periods. Interest and/or penalties related to income taxes are reported as a component of income tax expense. Such amounts were not significant during the reported periods. Year-end deferred taxes are presented in the table below. Deferred taxes are based on the U.S. statutory federal income tax rate of 21%. 2020 2019 Deferred tax assets: Lease liabilities under operating leases $ 67,839 $ 67,975 Allowance for credit losses 64,573 27,860 Net actuarial loss on defined benefit post-retirement benefit plans 13,512 12,210 Stock-based compensation 10,033 11,211 Bonus accrual 3,961 5,055 Deferred loan and lease origination fees 10,252 2,254 Other 3,834 2,058 Total gross deferred tax assets 174,004 128,623 Deferred tax liabilities: Net unrealized gain on securities available for sale and transferred securities (149,870) (83,281) Right-of-use assets under operating leases (61,963) (63,463) Premises and equipment (49,602) (29,730) Intangible assets (14,596) (12,642) Defined benefit post-retirement benefit plans (10,081) (9,419) Partnership interests (2,913) (2,894) Leases (1,090) (1,572) Other (1,387) (1,440) Total gross deferred tax liabilities (291,502) (204,441) Net deferred tax asset (liability) $ (117,498) $ (75,818) No valuation allowance for deferred tax assets was recorded at December 31, 2020 and 2019 as management believes it is more likely than not that all of the deferred tax assets will be realized against deferred tax liabilities and projected future taxable income. There were no unrecognized tax benefits during any of the reported periods. We file income tax returns in the U.S. federal jurisdiction. We are no longer subject to U.S. federal income tax examinations by tax authorities for years before 2017. |
Other Comprehensive Income (Los
Other Comprehensive Income (Loss) | 12 Months Ended |
Dec. 31, 2020 | |
Equity [Abstract] | |
Other Comprehensive Income (Loss) | Other Comprehensive Income (Loss) The tax effects allocated to each component of other comprehensive income (loss) were as follows: Before Tax Tax Expense, Net of Tax 2020 Securities available for sale and transferred securities: Change in net unrealized gain/loss during the period $ 427,331 $ 89,741 $ 337,590 Change in net unrealized gain on securities transferred to held to maturity (1,256) (264) (992) Reclassification adjustment for net (gains) losses included in net income (108,989) (22,888) (86,101) Total securities available for sale and transferred securities 317,086 66,589 250,497 Defined-benefit post-retirement benefit plans: Change in the net actuarial gain/loss (11,518) (2,419) (9,099) Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) 5,319 1,117 4,202 Total defined-benefit post-retirement benefit plans (6,199) (1,302) (4,897) Total other comprehensive income (loss) $ 310,887 $ 65,287 $ 245,600 2019 Securities available for sale and transferred securities: Change in net unrealized gain/loss during the period $ 418,556 $ 87,897 $ 330,659 Change in net unrealized gain on securities transferred to held to maturity (1,292) (271) (1,021) Reclassification adjustment for net (gains) losses included in net income (293) (62) (231) Total securities available for sale and transferred securities 416,971 87,564 329,407 Defined-benefit post-retirement benefit plans: Change in the net actuarial gain/loss (3,644) (765) (2,879) Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) 5,623 1,181 4,442 Total defined-benefit post-retirement benefit plans 1,979 416 1,563 Total other comprehensive income (loss) $ 418,950 $ 87,980 $ 330,970 2018 Securities available for sale and transferred securities: Change in net unrealized gain/loss during the period $ (182,340) $ (38,292) $ (144,048) Change in net unrealized gain on securities transferred to held to maturity (8,818) (1,853) (6,965) Reclassification adjustment for net (gains) losses included in net income 156 33 123 Total securities available for sale and transferred securities (191,002) (40,112) (150,890) Defined-benefit post-retirement benefit plans: Change in the net actuarial gain/loss (7,225) (1,517) (5,708) Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) 5,002 1,051 3,951 Total defined-benefit post-retirement benefit plans (2,223) (466) (1,757) Total other comprehensive income (loss) $ (193,225) $ (40,578) $ (152,647) Activity in accumulated other comprehensive income, net of tax, was as follows: Securities Defined Accumulated Balance January 1, 2020 $ 313,304 $ (45,934) $ 267,370 Other comprehensive income (loss) before reclassification 336,598 (9,099) 327,499 Reclassification of amounts included in net income (86,101) 4,202 (81,899) Net other comprehensive income (loss) during period 250,497 (4,897) 245,600 Balance December 31, 2020 $ 563,801 $ (50,831) $ 512,970 Balance January 1, 2019 $ (16,103) $ (47,497) $ (63,600) Other comprehensive income (loss) before reclassification 329,638 (2,879) 326,759 Reclassification of amounts included in net income (231) 4,442 4,211 Net other comprehensive income (loss) during period 329,407 1,563 330,970 Balance December 31, 2019 $ 313,304 $ (45,934) $ 267,370 Balance January 1, 2018 $ 117,230 $ (37,718) $ 79,512 Other comprehensive income (loss) before reclassification (151,013) (5,708) (156,721) Reclassification of amounts included in net income 123 3,951 4,074 Net other comprehensive income (loss) during period (150,890) (1,757) (152,647) Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act to retained earnings 17,557 (8,022) 9,535 Balance December 31, 2018 $ (16,103) $ (47,497) $ (63,600) |
Derivative Financial Instrument
Derivative Financial Instruments | 12 Months Ended |
Dec. 31, 2020 | |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
Derivative Financial Instruments | Derivative Financial Instruments The fair value of derivative positions outstanding is included in accrued interest receivable and other assets and accrued interest payable and other liabilities in the accompanying consolidated balance sheets and in the net change in each of these financial statement line items in the accompanying consolidated statements of cash flows. Interest Rate Derivatives. We utilize interest rate swaps, caps and floors to mitigate exposure to interest rate risk and to facilitate the needs of our customers. Our objectives for utilizing these derivative instruments are described below: We have entered into certain interest rate swap contracts that are matched to specific fixed-rate commercial loans or leases that we have entered into with our customers. These contracts have been designated as hedging instruments to hedge the risk of changes in the fair value of the underlying commercial loan/lease due to changes in interest rates. The related contracts are structured so that the notional amounts reduce over time to generally match the expected amortization of the underlying loan/lease. We have entered into certain interest rate swap, cap and floor contracts that are not designated as hedging instruments. These derivative contracts relate to transactions in which we enter into an interest rate swap, cap and/or floor with a customer while at the same time entering into an offsetting interest rate swap, cap and/or floor with a third-party financial institution. In connection with each swap transaction, we agree to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on a similar notional amount at a fixed interest rate. At the same time, we agree to pay a third-party financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The transaction allows our customer to effectively convert a variable rate loan to a fixed rate. Because we act as an intermediary for our customer, changes in the fair value of the underlying derivative contracts for the most part offset each other and do not significantly impact our results of operations. The notional amounts and estimated fair values of interest rate derivative contracts outstanding at December 31, 2020 and 2019 are presented in the following table. The fair values of interest rate derivative contracts are estimated utilizing internal valuation models with observable market data inputs, or as determined by the Chicago Mercantile Exchange (“CME”) for centrally cleared derivative contracts. CME rules legally characterize variation margin payments for centrally cleared derivatives as settlements of the derivatives' exposure rather than collateral. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. Variation margin, as determined by the CME, is settled daily. As a result, derivative contracts that clear through the CME have an estimated fair value of zero as of December 31, 2020 and 2019. December 31, 2020 December 31, 2019 Notional Estimated Notional Estimated Derivatives designated as hedges of fair value: Financial institution counterparties: Loan/lease interest rate swaps - assets $ — $ — $ 2,545 $ 6 Loan/lease interest rate swaps - liabilities 3,724 (134) 6,000 (138) Non-hedging interest rate derivatives: Financial institution counterparties: Loan/lease interest rate swaps - assets — — 122,788 67 Loan/lease interest rate swaps - liabilities 1,173,173 (33,812) 1,002,860 (19,483) Loan/lease interest rate caps - assets 356,601 1,241 107,835 266 Customer counterparties: Loan/lease interest rate swaps - assets 1,173,173 84,424 1,002,860 43,857 Loan/lease interest rate swaps - liabilities — — 122,788 (310) Loan/lease interest rate caps - liabilities 356,601 (1,241) 107,835 (266) The weighted-average rates paid and received for interest rate swaps outstanding at December 31, 2020 were as follows: Weighted-Average Interest Interest Interest rate swaps: Fair value hedge loan/lease interest rate swaps 3.27 % 0.15 % Non-hedging interest rate swaps - financial institution counterparties 3.97 1.95 Non-hedging interest rate swaps - customer counterparties 1.95 3.97 The weighted-average strike rate for outstanding interest rate caps was 3.36% at December 31, 2020. Commodity Derivatives. We enter into commodity swaps and option contracts that are not designated as hedging instruments primarily to accommodate the business needs of our customers. Upon the origination of a commodity swap or option contract with a customer, we simultaneously enter into an offsetting contract with a third party financial institution to mitigate the exposure to fluctuations in commodity prices. The notional amounts and estimated fair values of non-hedging commodity swap and option derivative positions outstanding are presented in the following table. We obtain dealer quotations and use internal valuation models with observable market data inputs to value our commodity derivative positions. December 31, 2020 December 31, 2019 Notional Notional Estimated Notional Estimated Financial institution counterparties: Oil - assets Barrels 3,056 $ 8,341 1,214 $ 2,796 Oil - liabilities Barrels 6,391 (32,112) 2,148 (6,916) Natural gas - assets MMBTUs 9,281 1,529 8,295 2,131 Natural gas - liabilities MMBTUs 15,079 (3,265) 2,689 (70) Customer counterparties: Oil - assets Barrels 6,391 32,670 2,172 7,208 Oil - liabilities Barrels 3,056 (8,264) 1,190 (2,652) Natural gas - assets MMBTUs 17,636 3,451 2,689 83 Natural gas - liabilities MMBTUs 6,724 (1,458) 8,295 (2,039) Foreign Currency Derivatives . We enter into foreign currency forward contracts that are not designated as hedging instruments primarily to accommodate the business needs of our customers. Upon the origination of a foreign currency denominated transaction with a customer, we simultaneously enter into an offsetting contract with a third party financial institution to negate the exposure to fluctuations in foreign currency exchange rates. We also utilize foreign currency forward contracts that are not designated as hedging instruments to mitigate the economic effect of fluctuations in foreign currency exchange rates on foreign currency holdings and certain short-term, non-U.S. dollar denominated loans. The notional amounts and fair values of open foreign currency forward contracts were as follows: December 31, 2020 December 31, 2019 Notional Notional Estimated Notional Estimated Financial institution counterparties: Forward contracts - liabilities CAD — $ — 4,593 $ (33) Customer counterparties: Forward contracts - assets CAD — — 4,583 45 Gains, Losses and Derivative Cash Flows . For fair value hedges, the changes in the fair value of both the derivative hedging instrument and the hedged item are included in other non-interest income or other non-interest expense. The extent that such changes in fair value do not offset represents hedge ineffectiveness. Net cash flows from interest rate swaps on commercial loans/leases designated as hedging instruments in effective hedges of fair value are included in interest income on loans. For non-hedging derivative instruments, gains and losses due to changes in fair value and all cash flows are included in other non-interest income and other non-interest expense. Amounts included in the consolidated statements of income related to interest rate derivatives designated as hedges of fair value were as follows: 2020 2019 2018 Commercial loan/lease interest rate swaps: Amount of gain (loss) included in interest income on loans $ (111) $ 86 $ 25 Amount of (gain) loss included in other non-interest expense 9 — (1) As stated above, we enter into non-hedge related derivative positions primarily to accommodate the business needs of our customers. Upon the origination of a derivative contract with a customer, we simultaneously enter into an offsetting derivative contract with a third party financial institution. We recognize immediate income based upon the difference in the bid/ask spread of the underlying transactions with our customers and the third party. Because we act only as an intermediary for our customer, subsequent changes in the fair value of the underlying derivative contracts for the most part offset each other and do not significantly impact our results of operations. Amounts included in the consolidated statements of income related to non-hedging interest rate, commodity, foreign currency and other derivative instruments are presented in the table below. 2020 2019 2018 Non-hedging interest rate derivatives: Other non-interest income $ 3,413 $ 2,005 $ 4,112 Other non-interest expense 1 (1) — Non-hedging commodity derivatives: Other non-interest income 1,768 503 795 Non-hedging foreign currency derivatives: Other non-interest income 28 51 246 Non-hedging other derivatives: Other non-interest income 5,992 750 — During 2020, we sold certain non-hedge related, short-term put options on U.S. Treasury securities and realized gains totaling approximately $6.0 million in connection with the sales. The put options expired without being exercised. Gains realized from similar transactions totaled $750 thousand in 2019. These gains are included in the table above as a component of non-hedging other derivatives. Counterparty Credit Risk. Derivative contracts involve the risk of dealing with both bank customers and institutional derivative counterparties and their ability to meet contractual terms. Institutional counterparties must have an investment grade credit rating and be approved by our Asset/Liability Management Committee. Our credit exposure on interest rate swaps is limited to the net favorable value and interest payments of all swaps by each counterparty, while our credit exposure on commodity swaps/options and foreign currency forward contracts is limited to the net favorable value of all contracts by each counterparty. Credit exposure may be reduced by the amount of collateral pledged by the counterparty. There are no credit-risk-related contingent features associated with any of our derivative contracts. Certain derivative contracts with upstream financial institution counterparties may be terminated with respect to a party in the transaction, if such party does not have at least a minimum level rating assigned to either its senior unsecured long-term debt or its deposit obligations by certain third-party rating agencies. Our credit exposure relating to interest rate swaps, commodity swaps/options and foreign currency forward contracts with bank customers was approximately $112.6 million at December 31, 2020. This credit exposure is partly mitigated as transactions with customers are generally secured by the collateral, if any, securing the underlying transaction being hedged. Our credit exposure, net of collateral pledged, relating to interest rate swaps, commodity swaps/options and foreign currency forward contracts with upstream financial institution counterparties was approximately $16.9 million at December 31, 2020. This amount was primarily related to excess collateral we posted to counterparties. Collateral levels for upstream financial institution counterparties are monitored and adjusted as necessary. See Note 16 – Balance Sheet Offsetting and Repurchase Agreements for additional information regarding our credit exposure with upstream financial institution counterparties. At December 31, 2020 we had $74.0 million in cash collateral related to derivative contracts on deposit with other financial institution counterparties. |
Balance Sheet Offsetting
Balance Sheet Offsetting | 12 Months Ended |
Dec. 31, 2020 | |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
Balance Sheet Offsetting | Balance Sheet Offsetting and Repurchase Agreements Balance Sheet Offsetting. Certain financial instruments, including resell and repurchase agreements and derivatives, may be eligible for offset in the consolidated balance sheet and/or subject to master netting arrangements or similar agreements. Our derivative transactions with upstream financial institution counterparties are generally executed under International Swaps and Derivative Association (“ISDA”) master agreements which include “right of set-off” provisions. In such cases there is generally a legally enforceable right to offset recognized amounts and there may be an intention to settle such amounts on a net basis. Nonetheless, we do not generally offset such financial instruments for financial reporting purposes. Information about financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2020 is presented in the following tables. Gross Amount Gross Amount Net Amount December 31, 2020 Financial assets: Derivatives: Loan/lease interest rate swaps and caps $ 1,241 $ — $ 1,241 Commodity swaps and options 9,870 — 9,870 Total derivatives 11,111 — 11,111 Resell agreements — — — Total $ 11,111 $ — $ 11,111 Financial liabilities: Derivatives: Loan/lease interest rate swaps $ 33,946 $ — $ 33,946 Commodity swaps and options 35,377 — 35,377 Foreign currency forward contracts — — — Total derivatives 69,323 — 69,323 Repurchase agreements 2,068,147 — 2,068,147 Total $ 2,137,470 $ — $ 2,137,470 Gross Amounts Not Offset Net Amount Financial Collateral Net December 31, 2020 Financial assets: Derivatives: Counterparty A $ 2 $ (2) $ — $ — Counterparty B 5,838 (5,838) — — Counterparty C — — — — Other counterparties 5,271 (5,271) — — Total derivatives 11,111 (11,111) — — Resell agreements — — — — Total $ 11,111 $ (11,111) $ — $ — Financial liabilities: Derivatives: Counterparty A $ 6,430 $ (2) $ (6,428) $ — Counterparty B 20,722 (5,838) (14,700) 184 Counterparty C 71 — (71) — Other counterparties 42,100 (5,271) (35,832) 997 Total derivatives 69,323 (11,111) (57,031) 1,181 Repurchase agreements 2,068,147 — (2,068,147) — Total $ 2,137,470 $ (11,111) $ (2,125,178) $ 1,181 Information about financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2019 is presented in the following tables. Gross Amount Gross Amount Net Amount December 31, 2019 Financial assets: Derivatives: Loan/lease interest rate swaps and caps $ 339 $ — $ 339 Commodity swaps and options 4,927 — 4,927 Total derivatives 5,266 — 5,266 Resell agreements 31,299 — 31,299 Total $ 36,565 $ — $ 36,565 Financial liabilities: Derivatives: Loan/lease interest rate swaps $ 19,621 $ — $ 19,621 Commodity swaps and options 6,986 — 6,986 Foreign currency forward contracts 33 — 33 Total derivatives 26,640 — 26,640 Repurchase agreements 1,668,142 — 1,668,142 Total $ 1,694,782 $ — $ 1,694,782 Gross Amounts Not Offset Net Amount Financial Collateral Net December 31, 2019 Financial assets: Derivatives: Counterparty A $ 39 $ (39) $ — $ — Counterparty B 1,650 (1,650) — — Counterparty C 1 (1) — — Other counterparties 3,576 (3,546) — 30 Total derivatives 5,266 (5,236) — 30 Resell agreements 31,299 — (31,299) — Total $ 36,565 $ (5,236) $ (31,299) $ 30 Financial liabilities: Derivatives: Counterparty A $ 5,192 $ (39) $ (5,153) $ — Counterparty B 7,424 (1,650) (5,774) — Counterparty C 135 (1) (134) — Other counterparties 13,889 (3,546) (10,343) — Total derivatives 26,640 (5,236) (21,404) — Repurchase agreements 1,668,142 — (1,668,142) — Total $ 1,694,782 $ (5,236) $ (1,689,546) $ — Repurchase Agreements . We utilize securities sold under agreements to repurchase to facilitate the needs of our customers and to facilitate secured short-term funding needs. Securities sold under agreements to repurchase are stated at the amount of cash received in connection with the transaction. We monitor collateral levels on a continuous basis. We may be required to provide additional collateral based on the fair value of the underlying securities. Securities pledged as collateral under repurchase agreements are maintained with our safekeeping agents. The remaining contractual maturity of repurchase agreements in the consolidated balance sheets as of December 31, 2020 and December 31, 2019 is presented in the following tables. Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater than 90 Days Total December 31, 2020 Repurchase agreements: U.S. Treasury $ 692,860 $ — $ — $ — $ 692,860 Residential mortgage-backed securities 1,375,287 — — — 1,375,287 Total borrowings $ 2,068,147 $ — $ — $ — $ 2,068,147 Gross amount of recognized liabilities for repurchase agreements $ 2,068,147 Amounts related to agreements not included in offsetting disclosures above $ — December 31, 2019 Repurchase agreements: U.S. Treasury $ 435,904 $ — $ — $ — $ 435,904 Residential mortgage-backed securities 1,232,238 — — — 1,232,238 Total borrowings $ 1,668,142 $ — $ — $ — $ 1,668,142 Gross amount of recognized liabilities for repurchase agreements $ 1,668,142 Amounts related to agreements not included in offsetting disclosures above $ — |
Fair Value Measurements
Fair Value Measurements | 12 Months Ended |
Dec. 31, 2020 | |
Fair Value Disclosures [Abstract] | |
Fair Value Measurements | Fair Value Measurements The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, we utilize valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: • Level 1 Inputs - Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. • Level 2 Inputs - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means. • Level 3 Inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and our creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. Our valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes our valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below. Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with our monthly and/or quarterly valuation process. Financial Assets and Financial Liabilities: Financial assets and financial liabilities measured at fair value on a recurring basis include the following: Securities Available for Sale . U.S. Treasury securities are reported at fair value utilizing Level 1 inputs. Other securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For these securities, we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. We review the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, we do not purchase investment portfolio securities that are esoteric or that have a complicated structure. Our entire portfolio consists of traditional investments, nearly all of which are U.S. Treasury obligations, federal agency bullet or mortgage pass-through securities, or general obligation or revenue based municipal bonds. Pricing for such instruments is fairly generic and is easily obtained. From time to time, we will validate prices supplied by the independent pricing service by comparison to prices obtained from third-party sources or derived using internal models. Trading Securities . U.S. Treasury securities and exchange-listed common stock are reported at fair value utilizing Level 1 inputs. Other securities classified as trading are reported at fair value utilizing Level 2 inputs in the same manner as described above for securities available for sale. Derivatives . Derivatives are generally reported at fair value utilizing Level 2 inputs, except for foreign currency contracts, which are reported at fair value utilizing Level 1 inputs. We obtain dealer quotations and utilize internally developed valuation models to value commodity swaps/options. We utilize internally developed valuation models and/or third-party models with observable market data inputs to validate the valuations provided by the dealers. Though there has never been a significant discrepancy in the valuations, should such a significant discrepancy arise, we would obtain price verification from a third-party dealer. We utilize internal valuation models with observable market data inputs to estimate fair values of customer interest rate swaps, caps and floors. We also obtain dealer quotations for these derivatives for comparative purposes to assess the reasonableness of the model valuations. In cases where significant credit valuation adjustments are incorporated into the estimation of fair value, reported amounts are considered to have been derived utilizing Level 3 inputs. For purposes of potential valuation adjustments to our derivative positions, we evaluate the credit risk of our counterparties as well as ours. Accordingly, we have considered factors such as the likelihood of our default and the default of our counterparties, our net exposures and remaining contractual life, among other things, in determining if any fair value adjustments related to credit risk are required. Counterparty exposure is evaluated by netting positions that are subject to master netting arrangements, as well as considering the amount of collateral securing the position. We review our counterparty exposure on a regular basis, and, when necessary, appropriate business actions are taken to adjust the exposure. We also utilize this approach to estimate our own credit risk on derivative liability positions. To date, we have not realized any significant losses due to a counterparty’s inability to pay any net uncollateralized position. The change in value of derivative assets and derivative liabilities attributable to credit risk was not significant during the reported periods. The following tables summarize financial assets and financial liabilities measured at fair value on a recurring basis as of December 31, 2020 and 2019, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Level 1 Level 2 Level 3 Total 2020 Securities available for sale: U.S. Treasury $ 1,119,633 $ — $ — $ 1,119,633 Residential mortgage-backed securities — 1,987,679 — 1,987,679 States and political subdivisions — 7,287,902 — 7,287,902 Other — 42,351 — 42,351 Trading account securities: U.S. Treasury 23,996 — — 23,996 States and political subdivisions — 460 — 460 Derivative assets: Interest rate swaps, caps and floors — 85,665 — 85,665 Commodity swaps and options — 45,535 456 45,991 Foreign currency forward contracts — — — — Derivative liabilities: Interest rate swaps, caps and floors — 35,187 — 35,187 Commodity swaps and options — 45,099 — 45,099 Foreign currency forward contracts — — — — 2019 Securities available for sale: U.S. Treasury $ 1,948,133 $ — $ — $ 1,948,133 Residential mortgage-backed securities — 2,207,594 — 2,207,594 States and political subdivisions — 7,070,997 — 7,070,997 Other — 42,867 — 42,867 Trading account securities: U.S. Treasury 24,298 — — 24,298 Derivative assets: Interest rate swaps, caps and floors — 44,196 — 44,196 Commodity swaps and options — 12,218 — 12,218 Foreign currency forward contracts 45 — — 45 Derivative liabilities: Interest rate swaps, caps and floors — 20,197 — 20,197 Commodity swaps and options — 11,677 — 11,677 Foreign currency forward contracts 33 — — 33 Derivative assets, measured at fair value on a recurring basis using significant unobservable (Level 3) inputs during the reported periods consist of commodity swaps sold to loan customers. The significant unobservable (Level 3) inputs used in the fair value measurement of these commodity swaps sold to loan customers primarily relate to the probability of default and loss severity in the event of default. The probability of default is determined by the underlying risk grade of the loan (see Note 3 – Loans) underlying the commodity swap in that the probability of default increases as a loan’s risk grade deteriorates, while the loss severity is estimated through an analysis of the collateral supporting both the underlying loan and commodity swap. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity. As of December 31, 2020, the weighted-average risk grade of loans underlying commodity swaps measured at fair value using significant unobservable (Level 3) inputs was 14.0. The weighted-average loss severity in the event of default on the commodity swaps was 10.0%. A reconciliation of the beginning and ending balances of derivative assets measured at fair value on a recurring basis using significant unobservable (Level 3) inputs is not presented as such amounts were not significant during the reported periods. Certain financial assets and financial liabilities are measured at fair value on a nonrecurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). Financial assets measured at fair value on a non-recurring basis during the reported periods include certain impaired loans reported at the fair value of the underlying collateral if repayment is expected solely from the collateral. Collateral values are estimated using Level 2 inputs based on observable market data, typically in the case of real estate collateral, or Level 3 inputs based on customized discounting criteria, typically in the case of non-real estate collateral such as inventory, oil and gas reserves, accounts receivable, equipment or other business assets. The following table presents impaired loans that were remeasured and reported at fair value through a specific valuation allowance allocation of the allowance for credit losses on loans based upon the fair value of the underlying collateral: 2020 2019 2018 Level 2 Carrying value of impaired loans before allocations $ 1,559 $ 2,354 $ 12,517 Specific valuation allowance allocations (450) (383) (2,599) Fair value $ 1,109 $ 1,971 $ 9,918 Level 3 Carrying value of impaired loans before allocations $ 34,302 $ 65,176 $ 22,688 Specific valuation allowance allocations (11,151) (18,019) 9,260 Fair value $ 23,151 $ 47,157 $ 31,948 Non-Financial Assets and Non-Financial Liabilities: We do not have any non-financial assets or non-financial liabilities measured at fair value on a recurring basis. Certain non-financial assets measured at fair value on a non-recurring basis include foreclosed assets (upon initial recognition or subsequent impairment), non-financial assets and non-financial liabilities measured at fair value in the second step of a goodwill impairment test, and intangible assets and other non-financial long-lived assets measured at fair value for impairment assessment. Non-financial assets measured at fair value on a non-recurring basis during the reported periods include certain foreclosed assets which, upon initial recognition, were remeasured and reported at fair value through a charge-off to the allowance for credit losses on loans and certain foreclosed assets which, subsequent to their initial recognition, were remeasured at fair value through a write-down included in other non-interest expense. The fair value of a foreclosed asset is estimated using Level 2 inputs based on observable market data or Level 3 inputs based on customized discounting criteria. During the reported periods, all fair value measurements for foreclosed assets utilized Level 2 inputs. The following table presents foreclosed assets that were remeasured and reported at fair value: 2020 2019 2018 Foreclosed assets remeasured at initial recognition: Carrying value of foreclosed assets prior to remeasurement $ — $ 1,348 $ 2,899 Charge-offs recognized in the allowance for credit losses on loans — (76) — Fair value $ — $ 1,272 $ 2,899 Foreclosed assets remeasured subsequent to initial recognition: Carrying value of foreclosed assets prior to remeasurement $ 328 $ — $ 1,823 Write-downs included in other non-interest expense (231) — (473) Fair value $ 97 $ — $ 1,350 Charge-offs recognized upon loan foreclosures are generally offset by general or specific allocations of the allowance for credit losses on loans and generally do not, and did not during the reported periods, significantly impact our credit loss expense. Regulatory guidelines require us to reevaluate the fair value of other real estate owned on at least an annual basis. While our policy is to comply with the regulatory guidelines, our general practice is to reevaluate the fair value of collateral supporting impaired collateral dependent loans on a quarterly basis. Thus, appraisals are generally not considered to be outdated, and we typically do not make any adjustments to the appraised values. ASC Topic 825, “Financial Instruments,” requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. The estimated fair value approximates carrying value for cash and cash equivalents, accrued interest and the cash surrender value of life insurance policies. The methodologies for other financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis are discussed below: Loans . The estimated fair value approximates carrying value for variable-rate loans that reprice frequently and with no significant change in credit risk. The fair value of fixed-rate loans and variable-rate loans which reprice on an infrequent basis is estimated by discounting future cash flows using the current interest rates at which similar loans with similar terms would be made to borrowers of similar credit quality. An overall valuation adjustment is made for specific credit risks as well as general portfolio credit risk. Deposits . The estimated fair value approximates carrying value for demand deposits. The fair value of fixed-rate deposit liabilities with defined maturities is estimated by discounting future cash flows using the interest rates currently offered for deposits of similar remaining maturities. The estimated fair value of deposits does not take into account the value of our long-term relationships with depositors, commonly known as core deposit intangibles, which are separate intangible assets, and not considered financial instruments. Nonetheless, we would likely realize a core deposit premium if our deposit portfolio were sold in the principal market for such deposits. Borrowed Funds . The estimated fair value approximates carrying value for short-term borrowings. The fair value of long-term fixed-rate borrowings is estimated using quoted market prices, if available, or by discounting future cash flows using current interest rates for similar financial instruments. The estimated fair value approximates carrying value for variable-rate junior subordinated deferrable interest debentures that reprice quarterly. Loan Commitments, Standby and Commercial Letters of Credit . Our lending commitments have variable interest rates and “escape” clauses if the customer’s credit quality deteriorates. Therefore, the fair values of these items are not significant and are not included in the following table. The estimated fair values of financial instruments that are reported at amortized cost in our consolidated balance sheets, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows: December 31, 2020 December 31, 2019 Carrying Estimated Carrying Estimated Financial assets: Level 2 inputs: Cash and cash equivalents $ 10,288,853 $ 10,288,853 $ 3,788,181 $ 3,788,181 Securities held to maturity 1,945,673 2,052,896 2,030,005 2,048,675 Cash surrender value of life insurance policies 189,984 189,984 187,156 187,156 Accrued interest receivable 181,432 181,432 183,850 183,850 Level 3 inputs: Loans, net 17,218,132 17,390,683 14,618,165 14,654,615 Financial liabilities: Level 2 inputs: Deposits 35,015,761 35,018,185 27,639,564 27,641,255 Federal funds purchased and repurchase agreements 2,116,997 2,116,997 1,695,342 1,695,342 Junior subordinated deferrable interest debentures 136,357 137,115 136,299 137,115 Subordinated notes payable and other borrowings 99,021 115,717 98,865 89,077 Accrued interest payable 8,127 8,127 12,393 12,393 Under ASC Topic 825, entities may choose to measure eligible financial instruments at fair value at specified election dates. The fair value measurement option (i) may be applied instrument by instrument, with certain exceptions, (ii) is generally irrevocable and (iii) is applied only to entire instruments and not to portions of instruments. Unrealized gains and losses on items for which the fair value measurement option has been elected must be reported in earnings at each subsequent reporting date. During the reported periods, we had no financial instruments measured at fair value under the fair value measurement option. |
Operating Segments
Operating Segments | 12 Months Ended |
Dec. 31, 2020 | |
Segment Reporting [Abstract] | |
Operating Segments | Operating Segments We are managed under a matrix organizational structure whereby our two primary operating segments, Banking and Frost Wealth Advisors, overlap a regional reporting structure. The regions are primarily based upon geographic location and include Austin, Corpus Christi, Dallas, Fort Worth, Houston, Permian Basin, Rio Grande Valley, San Antonio and Statewide. We are primarily managed based on the line of business structure. In that regard, all regions have the same lines of business, which have the same product and service offerings, have similar types and classes of customers and utilize similar service delivery methods. Pricing guidelines for products and services are the same across all regions. The regional reporting structure is primarily a means to scale the lines of business to provide a local, community focus for customer relations and business development. Banking and Frost Wealth Advisors are delineated by the products and services that each segment offers. The Banking operating segment includes both commercial and consumer banking services and Frost Insurance Agency. Commercial banking services are provided to corporations and other business clients and include a wide array of lending and cash management products. Consumer banking services include direct lending and depository services. Frost Insurance Agency provides insurance brokerage services to individuals and businesses covering corporate and personal property and casualty products, as well as group health and life insurance products. The Frost Wealth Advisors operating segment includes fee-based services within private trust, retirement services, and financial management services, including personal wealth management and securities brokerage services. A third operating segment, Non-Banks, is for the most part the parent holding company, as well as certain other insignificant non-bank subsidiaries of the parent that, for the most part, have little or no activity. The parent company’s principal activities include the direct and indirect ownership of our banking and non-banking subsidiaries and the issuance of debt and equity. Our principal source of revenue is dividends from our subsidiaries. The accounting policies of each reportable segment are the same as those of our consolidated entity except for the following items, which impact the Banking and Frost Wealth Advisors segments: (i) expenses for consolidated back-office operations and general overhead-type expenses such as executive administration, accounting and internal audit are allocated to operating segments based on estimated uses of those services, (ii) income tax expense for the individual segments is calculated essentially at the statutory rate, and (iii) the parent company records the tax expense or benefit necessary to reconcile to the consolidated total. We use a match-funded transfer pricing process to assess operating segment performance. The process helps us to (i) identify the cost or opportunity value of funds within each business segment, (ii) measure the profitability of a particular business segment by relating appropriate costs to revenues, (iii) evaluate each business segment in a manner consistent with its economic impact on consolidated earnings, and (iv) enhance asset and liability pricing decisions. Financial results by operating segment are detailed below. Certain prior period amounts have been reclassified to conform to the current presentation. Frost Wealth Advisors excludes off-balance-sheet managed and custody assets with a total fair value of $38.6 billion, $37.8 billion and $33.3 billion at December 31, 2020, 2019 and 2018. Banking Frost Non-Banks Consolidated 2020 Net interest income (expense) $ 981,441 $ 2,776 $ (8,216) $ 976,001 Credit loss expense 241,230 — — 241,230 Non-interest income 321,136 145,268 (950) 465,454 Non-interest expense 718,519 123,630 6,755 848,904 Income (loss) before income taxes 342,828 24,414 (15,921) 351,321 Income tax expense (benefit) 20,347 5,127 (5,304) 20,170 Net income (loss) 322,481 19,287 (10,617) 331,151 Preferred stock dividends — — 2,016 2,016 Redemption of preferred stock — — 5,514 5,514 Net income (loss) available to common shareholders $ 322,481 $ 19,287 $ (18,147) $ 323,621 Revenues from (expenses to) external customers $ 1,302,577 $ 148,044 $ (9,166) $ 1,441,455 Average assets (in millions) $ 37,892 $ 59 $ 10 $ 37,961 Banking Frost Non-Banks Consolidated 2019 Net interest income (expense) $ 1,010,368 $ 4,001 $ (10,364) $ 1,004,005 Credit loss expense 33,758 1 — 33,759 Non-interest income 218,447 145,905 (450) 363,902 Non-interest expense 703,121 124,622 6,936 834,679 Income (loss) before income taxes 491,936 25,283 (17,750) 499,469 Income tax expense (benefit) 55,520 5,308 (4,958) 55,870 Net income (loss) 436,416 19,975 (12,792) 443,599 Preferred stock dividends — — 8,063 8,063 Net income (loss) available to common shareholders $ 436,416 $ 19,975 $ (20,855) $ 435,536 Revenues from (expenses to) external customers $ 1,228,815 $ 149,906 $ (10,814) $ 1,367,907 Average assets (in millions) $ 32,019 $ 56 $ 11 $ 32,086 2018 Net interest income (expense) $ 963,757 $ 4,083 $ (9,948) $ 957,892 Credit loss expense 21,685 — — 21,685 Non-interest income 213,763 138,045 (522) 351,286 Non-interest expense 657,376 114,166 7,270 778,812 Income (loss) before income taxes 498,459 27,962 (17,740) 508,681 Income tax expense (benefit) 52,928 5,872 (5,037) 53,763 Net income (loss) 445,531 22,090 (12,703) 454,918 Preferred stock dividends — — 8,063 8,063 Net income (loss) available to common shareholders $ 445,531 $ 22,090 $ (20,766) $ 446,855 Revenues from (expenses to) external customers $ 1,177,520 $ 142,128 $ (10,470) $ 1,309,178 Average assets (in millions) $ 30,964 $ 54 $ 12 $ 31,030 |
Condensed Financial Statements
Condensed Financial Statements of Parent Company | 12 Months Ended |
Dec. 31, 2020 | |
Condensed Financial Information Disclosure [Abstract] | |
Condensed Financial Statements of Parent Company | Condensed Financial Statements of Parent Company Condensed financial statements pertaining only to Cullen/Frost Bankers, Inc. are presented below. Investments in subsidiaries are stated using the equity method of accounting. Condensed Balance Sheets December 31, 2020 2019 Assets: Cash $ 381,240 $ 9,116 Resell agreements — 258,000 Total cash and cash equivalents 381,240 267,116 Investment in subsidiaries 4,155,619 3,896,962 Accrued interest receivable and other assets 2,164 2,545 Total assets $ 4,539,023 $ 4,166,623 Liabilities: Junior subordinated deferrable interest debentures, net of unamortized issuance costs $ 136,357 $ 136,299 Subordinated notes, net of unamortized issuance costs 99,021 98,865 Accrued interest payable and other liabilities 10,629 19,791 Total liabilities 246,007 254,955 Shareholders’ Equity 4,293,016 3,911,668 Total liabilities and shareholders’ equity $ 4,539,023 $ 4,166,623 Condensed Statements of Income Year Ended December 31, 2020 2019 2018 Income: Dividend income paid by Frost Bank $ 298,884 $ 234,531 $ 223,371 Dividend income paid by non-banks 736 1,822 953 Interest and other income 446 2,868 1,828 Total income 300,066 239,221 226,152 Expenses: Interest expense 8,216 10,363 9,948 Salaries and employee benefits 1,581 1,551 1,973 Other 6,833 7,033 7,016 Total expenses 16,630 18,947 18,937 Income before income taxes and equity in undistributed earnings of subsidiaries 283,436 220,274 207,215 Income tax benefit 5,406 5,135 5,218 Equity in undistributed earnings of subsidiaries 42,309 218,190 242,485 Net income 331,151 443,599 454,918 Preferred stock dividends 2,016 8,063 8,063 Redemption of preferred stock 5,514 — — Net income available to common shareholders $ 323,621 $ 435,536 $ 446,855 Condensed Statements of Cash Flows Year Ended December 31, 2020 2019 2018 Operating Activities: Net income $ 331,151 $ 443,599 $ 454,918 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed earnings of subsidiaries (42,309) (218,190) (242,485) Stock-based compensation 770 780 721 Net tax benefit from stock-based compensation 370 240 304 Net change in other assets and other liabilities (8,937) 22,216 (12,709) Net cash from operating activities 281,045 248,645 200,749 Investing Activities: Net cash from investing activities — — — Financing Activities: Redemption of Series A preferred stock (150,000) — — Proceeds from issuance of Series B preferred stock 145,452 — — Proceeds from stock option exercises 12,557 20,770 31,647 Proceeds from stock-based compensation activities of subsidiaries 13,148 15,166 13,222 Purchase of treasury stock (15,785) (68,793) (101,010) Treasury stock issued to 401(k) stock purchase plan 10,307 — — Cash dividends paid on preferred stock (2,016) (8,063) (8,063) Cash dividends paid on common stock (180,584) (177,006) (165,449) Net cash from financing activities (166,921) (217,926) (229,653) Net change in cash and cash equivalents 114,124 30,719 (28,904) Cash and cash equivalents at beginning of year 267,116 236,397 265,301 Cash and cash equivalents at end of year $ 381,240 $ 267,116 $ 236,397 |
Accounting Standards Updates
Accounting Standards Updates | 12 Months Ended |
Dec. 31, 2020 | |
Accounting Standards Update and Change in Accounting Principle [Abstract] | |
Accounting Standards Updates | Accounting Standards Updates Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. We adopted ASU 2014-09 effective January 1, 2018. See Note 1 - Summary of Significant Accounting Policies for additional information. ASU 2016-01, “Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities." ASU 2016-01, among other things, (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment, (iii) eliminates the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet, (iv) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, (v) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments, (vi) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and (viii) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities. ASU 2016-01 became effective for us on January 1, 2018 and did not have a significant impact on our financial statements. ASU 2016-02, “Leases (Topic 842).” ASU 2016-02 among other things, requires lessees to recognize a lease liability, which is a lessee's obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. We adopted ASU 2016-02, along with several other subsequent codification updates related to lease accounting, as of January 1, 2019. See Note 1 - Summary of Significant Accounting Policies for additional information. ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts and requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. We adopted ASU 2016-13, as subsequently updated for certain clarifications, targeted relief and codification improvements, as of January 1, 2020 and recognized a cumulative effect adjustment reducing retained earnings by $29.3 million. See Note 1 - Summary of Significant Accounting Policies for additional information. ASU 2016-15, “Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 provides guidance related to certain cash flow issues in order to reduce the current and potential future diversity in practice. ASU 2016-15 became effective for us on January 1, 2018 and did not have a significant impact on our financial statements. ASU 2016-16, “Income Taxes (Topic 740) - Intra-Entity Transfers of Assets Other Than Inventory.” ASU 2016-16 provides guidance stating that an entity should recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. ASU 2016-16 became effective for us on January 1, 2018 and did not have a significant impact on our financial statements. ASU 2016-18, “Statement of Cash Flows (Topic 230) - Restricted Cash.” ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. ASU 2016-18 became effective for us on January 1, 2018 and did not have a significant impact on our financial statements. ASU 2017-01, “Business Combinations (Topic 805) - Clarifying the Definition of a Business.” ASU 2017-01 clarifies the definition and provides a more robust framework to use in determining when a set of assets and activities constitutes a business. ASU 2017-01 is intended to provide guidance when evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 became effective for us on January 1, 2018 and did not have a significant impact on our financial statements. ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.” ASU 2017-04 eliminates Step 2 from the goodwill impairment test which required entities to compute the implied fair value of goodwill. Under ASU 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 became effective for us on January 1, 2020 and did not have a significant impact on our financial statements. ASU 2017-05, “Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20) - Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets.” ASU 2017-05 clarifies the scope of Subtopic 610-20 and adds guidance for partial sales of nonfinancial assets, including partial sales of real estate. Historically, U.S. GAAP contained several different accounting models to evaluate whether the transfer of certain assets qualified for sale treatment. ASU 2017-05 reduces the number of potential accounting models that might apply and clarifies which model does apply in various circumstances. ASU 2017-05 became effective for us on January 1, 2018 and did not have a significant impact on our financial statements. ASU 2017-08, “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.” ASU 2017-08 shortens the amortization period for certain callable debt securities held at a premium to require such premiums to be amortized to the earliest call date unless applicable guidance related to certain pools of securities is applied to consider estimated prepayments. Under prior guidance, entities were generally required to amortize premiums on individual, non-pooled callable debt securities as a yield adjustment over the contractual life of the security. ASU 2017-08 does not change the accounting for callable debt securities held at a discount. We adopted ASU 2017-08 effective January 1, 2019 and recognized a cumulative effect adjustment reducing retained earnings by $14.7 million. See Note 1 - Summary of Significant Accounting Policies for additional information. ASU 2017-09, “Compensation - Stock Compensation (Topic 718) - Scope of Modification Accounting.” ASU 2017-09 clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under ASU 2017-09, an entity will not apply modification accounting to a share-based payment award if all of the following are the same immediately before and after the change: (i) the award's fair value, (ii) the award's vesting conditions and (iii) the award's classification as an equity or liability instrument. ASU 2017-09 became effective for us on January 1, 2018 and did not have a significant impact on our financial statements. ASU 2017-12, “Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities.” ASU 2017-12 amends the hedge accounting recognition and presentation requirements in ASC 815 to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities to better align the entity’s financial reporting for hedging relationships with those risk management activities and to reduce the complexity of and simplify the application of hedge accounting. ASU 2017-12 became effective for us on January 1, 2019 and did not have a significant impact on our financial statements. ASU 2018-02, “Income Statement - Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” Under ASU 2018-02, entities may elect to reclassify certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act, which was enacted on December 22, 2017, from accumulated other comprehensive income to retained earnings. ASU 2018-02 also requires certain accounting policy disclosures. We elected to adopt the provisions of ASU 2018-02 as of January 1, 2018 in advance of the required application date of January 1, 2019. See Note 1 - Summary of Significant Accounting Policies for additional information. ASU 2018-05, “Income Taxes (Topic 740) - Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin (SAB) No. 118.” ASU 2018-05 amends the Accounting Standards Codification to incorporate various SEC paragraphs pursuant to the issuance of SAB 118. SAB 118 addresses the application of generally accepted accounting principles in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Tax Cuts and Jobs Act. See Note 13 - Income Taxes. ASU 2018-13, “Fair Value Measurement (Topic 820) - Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement.” ASU 2018-13 modifies the disclosure requirements on fair value measurements in Topic 820. The amendments in this update remove disclosures that no longer are considered cost beneficial, modify/clarify the specific requirements of certain disclosures, and add disclosure requirements identified as relevant. ASU 2018-13 became effective for us on January 1, 2020 and did not have a significant impact on our financial statements. ASU 2018-14, “Compensation - Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20).” ASU 2018-14 amends and modifies the disclosure requirements for employers that sponsor defined benefit pension or other post-retirement plans. The amendments in this update remove disclosures that no longer are considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. ASU 2018-14 will be effective for us on January 1, 2021, with early adoption permitted, and is not expected to have a significant impact on our financial statements. ASU 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” ASU 2018-15 clarifies certain aspects of ASU 2015-05, “Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement,” which was issued in April 2015. Specifically, ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 does not affect the accounting for the service element of a hosting arrangement that is a service contract. ASU 2018-15 became effective for us on January 1, 2020 and did not have a significant impact on our financial statements. ASU 2018-16, “Derivatives and Hedging (Topic 815) - Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes.” The amendments in this update permit use of the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815 in addition to the interest rates on direct U.S. Treasury obligations, the LIBOR swap rate, the OIS rate based on the Fed Funds Effective Rate and the Securities Industry and Financial Markets Association (SIFMA) Municipal Swap Rate. ASU 2018-16 became effective for us on January 1, 2019 and did not have a significant impact on our financial statements. ASU 2019-12, “Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes.” The guidance issued in this update simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition for deferred tax liabilities for outside basis differences. ASU 2019-12 also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. ASU 2019-12 will be effective for us on January 1, 2021, with early adoption permitted, and is not expected to have a significant impact on our financial statements. ASU 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” ASU 2020-04 provides optional expedients and exceptions for accounting related to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. ASU 2020-04 applies only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform and do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. ASU 2020-04 was effective upon issuance and generally can be applied through December 31, 2022. The adoption of ASU 2020-04 did not significantly impact our financial statements. ASU 2020-08, “Codification Improvements to Subtopic 310-20, Receivables - Nonrefundable Fees and Other Costs.” ASU 2020-08 clarifies the accounting for the amortization of purchase premiums for callable debt securities with multiple call dates. ASU 2020-8 will be effective for us on January 1, 2021 and is not expected to have a significant impact on our financial statements. ASU 2020-09, “Debt (Topic 470): Amendments to SEC Paragraphs Pursuant to SEC Release No. 33-10762.” ASU 2020-9 amends the ASC to reflect the issuance of an SEC rule related to financial disclosure requirements for subsidiary issuers and guarantors of registered debt securities and affiliates whose securities are pledged as collateral for registered securities. ASU 2020-09 will be effective for us on January 4, 2021, concurrent with the effective date of the SEC release, and is not expected to have a significant impact on our financial statements. ASU 2021-01, “Reference Rate Reform (Topic 848): Scope.” ASU 2021-01 clarifies that certain optional expedients and exceptions in ASC 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. ASU 2021-01 also amends the expedients and exceptions in ASC 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. ASU 2021-01 was effective upon issuance and generally can be applied through December 31, 2022. The adoption of ASU 2021-01 did not significantly impact our financial statements. |
Summary of Significant Accoun_2
Summary of Significant Accounting Policies (Policies) | 12 Months Ended |
Dec. 31, 2020 | |
Accounting Policies [Abstract] | |
Nature Of Operations | Nature of Operations . Cullen/Frost Bankers, Inc. (“Cullen/Frost”) is a financial holding company and a bank holding company headquartered in San Antonio, Texas that provides, through its subsidiaries, a broad array of products and services throughout numerous Texas markets. The terms “Cullen/Frost,” “the Corporation,” “we,” “us” and “our” mean Cullen/Frost Bankers, Inc. and its subsidiaries, when appropriate. In addition to general commercial and consumer banking, other products and services offered include trust and investment management, insurance, brokerage, mutual funds, leasing, treasury management, capital markets advisory and item processing. |
Basis of Presentation | Basis of Presentation. The consolidated financial statements include the accounts of Cullen/Frost and all other entities in which Cullen/Frost has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation. The accounting and financial reporting policies we follow conform, in all material respects, to accounting principles generally accepted in the United States and to general practices within the financial services industry. We determine whether we have a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity (“VIE”) under accounting principles generally accepted in the United States. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity’s activities. We consolidate voting interest entities in which we have all, or at least a majority of, the voting interest. As defined in applicable accounting standards, VIEs are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when an enterprise has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The enterprise with a controlling financial interest, known as the primary beneficiary, consolidates the VIE. Our wholly owned subsidiaries Cullen/Frost Capital Trust II and WNB Capital Trust I are VIEs for which we are not the primary beneficiary. Accordingly, the accounts of these trusts are not included in our consolidated financial statements. Acquisitions are accounted for using the purchase method with the operating results of the acquired companies included with our results of operations since their respective dates of acquisition. |
Use of Estimates | Use of Estimates . The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The allowance for credit losses on loans and off-balance-sheet credit exposures, the fair values of financial instruments and the status of contingencies are particularly subject to change. |
Concentrations and Restrictions on Cash and Cash Equivalents | Concentrations and Restrictions on Cash and Cash Equivalents . We maintain deposits with other financial institutions in amounts that exceed federal deposit insurance coverage. Furthermore, federal funds sold are essentially uncollateralized loans to other financial institutions. Management regularly evaluates the credit risk associated with the counterparties to these transactions and believes that we are not exposed to any significant credit risks on cash and cash equivalents. We were required to have $42.0 million and $918.0 million of cash on hand or on deposit with the Federal Reserve Bank to meet regulatory reserve and clearing requirements at December 31, 2020 and 2019. Additionally, as of December 31, 2020 and 2019, we had $74.0 million and $37.5 million in cash collateral on deposit with other financial institution counterparties to interest rate swap transactions. |
Cash Flow Reporting | Cash Flow Reporting . Cash and cash equivalents include cash, deposits with other financial institutions that have an initial maturity of less than 90 days when acquired by us, federal funds sold and resell agreements. Net cash flows are reported for loans, deposit transactions and short-term borrowings. Additional cash flow information was as follows: Year Ended December 31, 2020 2019 2018 Cash paid for interest $ 49,300 $ 124,781 $ 89,270 Cash paid for income tax 44,140 45,352 5,112 Significant non-cash transactions: Transfer of securities from available for sale to held to maturity — 377,812 — Unsettled securities transactions 57,783 — 330 Loans foreclosed and transferred to other real estate owned and foreclosed assets 140 1,348 2,899 Loans to facilitate the sale of other real estate owned — 847 — Right-of-use lease assets obtained in exchange for lessee operating lease liabilities 18,284 319,286 — Treasury stock issued to 401(k) stock purchase plan 10,307 — — |
Repurchase/Resell Agreements | Repurchase/Resell Agreements. We purchase certain securities under agreements to resell. The amounts advanced under these agreements represent short-term loans and are reflected as assets in the accompanying consolidated balance sheets. The securities underlying these agreements are book-entry securities. We also sell certain securities under agreements to repurchase. The agreements are treated as collateralized financing transactions and the obligations to repurchase securities sold are reflected as a liability in the accompanying consolidated balance sheets. The dollar amount of the securities underlying the agreements remains in the asset accounts. |
Securities | Securities. Securities are classified as held to maturity and carried at amortized cost when management has the positive intent and ability to hold them until maturity. Securities to be held for indefinite periods of time are classified as available for sale and carried at fair value, with the unrealized holding gains and losses (those for which no allowance for credit losses are recorded) reported as a component of other comprehensive income, net of tax. Securities held for resale in anticipation of short-term market movements are classified as trading and are carried at fair value, with changes in unrealized holding gains and losses included in income. Management determines the appropriate classification of securities at the time of purchase. Securities with limited marketability, such as stock in the Federal Reserve Bank and the Federal Home Loan Bank, are carried at cost. Interest income on securities includes amortization of purchase premiums and discounts. Premiums and discounts on securities are generally amortized using the interest method with a constant effective yield without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Premiums on callable securities are amortized to their earliest call date. Prior to the adoption of a new accounting standard in 2019, as further discussed below, premiums on callable securities were amortized to their respective maturity dates unless such securities were included in pools for the purposes of assessing prepayment expectations. A security is placed on non-accrual status if (i) principal or interest has been in default for a period of 90 days or more or (ii) full payment of principal and interest is not expected. Interest accrued but not received for a security placed on non-accrual status is reversed against interest income. Gains and losses on sales are recorded on the trade date and are derived from the amortized cost of the security sold. |
Loans | Loans . Loans are reported at the principal balance outstanding net of unearned discounts. Interest income on loans is reported on the level-yield method and includes amortization of deferred loan fees and costs over the terms of the individual loans to which they relate, or, in certain cases, over the average expected term for loans where deferred fees and costs are accounted for on a pooled basis. Net loan commitment fees or costs for commitment periods greater than one year are deferred and amortized into fee income or other expense on a straight-line basis over the commitment period. Income on direct financing leases is recognized on a basis that achieves a constant periodic rate of return on the outstanding investment. Further information regarding our accounting policies related to past due loans, non-accrual loans, impaired loans and troubled-debt restructurings is presented in Note 3 - Loans. |
Credit Loss, Financial Instrument | Allowance for Credit Losses. As further discussed below, we adopted Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” on January 1, 2020. Accounting Standards Codification (“ASC”) Topic 326 (“ASC 326”) replaced the previous “incurred loss” model for measuring credit losses, which encompassed allowances for current known and inherent losses within the portfolio, with an “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. The new current expected credit loss (“CECL”) model requires the measurement of all expected credit losses for financial assets measured at amortized cost and certain off-balance-sheet credit exposures based on historical experience, current conditions, and reasonable and supportable forecasts. In connection with the adoption of ASC 326, we revised certain accounting policies and implemented certain accounting policy elections. The revised accounting policies are described below. Allowance For Credit Losses - Held-to-Maturity Securities: The allowance for credit losses on held-to-maturity securities is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of held-to-maturity securities to present management's best estimate of the net amount expected to be collected. Held-to-maturity securities are charged-off against the allowance when deemed uncollectible by management. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management measures expected credit losses on held-to-maturity securities on a collective basis by major security type with each type sharing similar risk characteristics and considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. Management has made the accounting policy election to exclude accrued interest receivable on held-to-maturity securities from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on held-to-maturity securities is presented in Note 2 - Securities. Allowance For Credit Losses - Available-for-Sale Securities: For available-for-sale securities in an unrealized loss position, we first assess whether (i) we intend to sell or (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis. If either case is affirmative, any previously recognized allowances are charged-off and the security's amortized cost is written down to fair value through income. If neither case is affirmative, the security is evaluated to determine whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and any adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on available-for-sale securities from the estimate of credit losses. Available-for-sale securities are charged-off against the allowance or, in the absence of any allowance, written down through income when deemed uncollectible by management or when either of the aforementioned criteria regarding intent or requirement to sell is met. Prior to the adoption of ASU 2016-13, declines in the fair value of held-to-maturity and available-for-sale securities below their cost that were deemed to be other than temporary were reflected in earnings as realized losses. In estimating other-than-temporary impairment losses prior to January 1, 2020, management considered, among other things, (i) the length of time and the extent to which the fair value had been less than cost, (ii) the financial condition and near-term prospects of the issuer and (iii) the intent and our ability to retain our investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. |
Allowance for Credit Losses Loans | Allowance for Credit Losses - Loans: The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present management's best estimate of the net amount expected to be collected. Loans are charged-off against the allowance when deemed uncollectible by management. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on loans from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on loans is presented in Note 3 - Loans. Allowance For Credit Losses - Loans. The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present the net amount expected to be collected. The amount of the allowance represents management's best estimate of current expected credit losses on loans considering available information, from internal and external sources, relevant to assessing collectibility over the loans' contractual terms, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless (i) management has a reasonable expectation that a trouble debt restructuring will be executed with an individual borrower or (ii) such extension or renewal options are not unconditionally cancellable by us and, in such cases, the borrower is likely to meet applicable conditions and likely to request extension or renewal. Relevant available information includes historical credit loss experience, current conditions and reasonable and supportable forecasts. While historical credit loss experience provides the basis for the estimation of expected credit losses, adjustments to historical loss information may be made for differences in current portfolio-specific risk characteristics, environmental conditions or other relevant factors. The allowance for credit losses is measured on a collective basis for portfolios of loans when similar risk characteristics exist. Loans that do not share risk characteristics are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Expected credit losses for collateral dependent loans, including loans where the borrower is experiencing financial difficulty but foreclosure is not probable, are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. Credit loss expense related to loans reflects the totality of actions taken on all loans for a particular period including any necessary increases or decreases in the allowance related to changes in credit loss expectations associated with specific loans or pools of loans. Portions of the allowance may be allocated for specific credits; however, the entire allowance is available for any credit that, in management’s judgment, should be charged off. While management utilizes its best judgment and information available, the ultimate appropriateness of the allowance is dependent upon a variety of factors beyond our control, including the performance of our loan portfolio, the economy, changes in interest rates and the view of the regulatory authorities toward loan classifications. In calculating the allowance for credit losses, most loans are segmented into pools based upon similar characteristics and risk profiles. Common characteristics and risk profiles include the type/purpose of loan, underlying collateral, geographical similarity and historical/expected credit loss patterns. In developing these loan pools for the purposes of modeling expected credit losses, we also analyzed the degree of correlation in how loans within each portfolio respond when subjected to varying economic conditions and scenarios as well as other portfolio stress factors. For modeling purposes, our loan pools include (i) commercial and industrial and energy - non-revolving, (ii) commercial and industrial and energy - revolving, (iii) commercial real estate - owner occupied, (iv) commercial real estate - non-owner occupied, (v) commercial real estate - construction/land development, (vi) consumer real estate and (vii) consumer and other. We periodically reassess each pool to ensure the loans within the pool continue to share similar characteristics and risk profiles and to determine whether further segmentation is necessary. For each loan pool, we measure expected credit losses over the life of each loan utilizing a combination of models which measure (i) probability of default (“PD”), which is the likelihood that loan will stop performing/default, (ii) probability of attrition (“PA”), which is the likelihood that a loan will pay-off prior to maturity, (iii) loss given default (“LGD”), which is the expected loss rate for loans in default and (iv) exposure at default (“EAD”), which is the estimated outstanding principal balance of the loans upon default, including the expected funding of unfunded commitments outstanding as of the measurement date. For certain commercial loan portfolios, the PD is calculated using a transition matrix to determine the likelihood of a customer’s risk grade migrating from one specified range of risk grades to a different specified range. Expected credit losses are calculated as the product of PD (adjusted for attrition), LGD and EAD. This methodology builds on default probabilities already incorporated into our risk grading process by utilizing pool-specific historical loss rates to calculate expected credit losses. These pool-specific historical loss rates may be adjusted for current macroeconomic assumptions, as further discussed below, and other factors such as differences in underwriting standards, portfolio mix, or when historical asset terms do not reflect the contractual terms of the financial assets being evaluated as of the measurement date. Each time we measure expected credit losses, we assess the relevancy of historical loss information and consider any necessary adjustments to address any differences in asset-specific characteristics. Due to their short-term nature, expected credit losses for overdrafts included in consumer and other loans are based solely upon a weighting of recent historical charge-offs over a period of three years. The measurement of expected credit losses is impacted by loan/borrower attributes and certain macroeconomic variables. Significant loan/borrower attributes utilized in our modeling processes include, among other things, (i) origination date, (ii) maturity date, (iii) payment type, (iv) collateral type and amount, (v) current risk grade, (vi) current unpaid balance and commitment utilization rate, (vii) payment status/delinquency history and (viii) expected recoveries of previously charged-off amounts. Significant macroeconomic variables utilized in our modeling processes include, among other things, (i) Gross State Product for Texas and U.S. Gross Domestic Product, (ii) selected market interest rates including U.S. Treasury rates, bank prime rate, 30-year fixed mortgage rate, BBB corporate bond rate, among others, (iii) unemployment rates, (iv) commercial and residential property prices in Texas and the U.S. as a whole, (v) West Texas Intermediate crude oil price and (vi) total stock market index. PD and PA were estimated by analyzing internally-sourced data related to historical performance of each loan pool over a complete economic cycle. PD and PA are adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a reasonable and supportable forecast period. We have determined that we are reasonably able to forecast the macroeconomic variables used in our modeling processes with an acceptable degree of confidence for a total of two years with the last twelve months of the forecast period encompassing a reversion process whereby the forecasted macroeconomic variables are reverted to their historical mean utilizing a rational, systematic basis. The macroeconomic variables utilized as inputs in our modeling processes were subjected to a variety of analysis procedures and were selected primarily based on statistical relevancy and correlation to our historical credit losses. By reverting these modeling inputs to their historical mean and considering loan/borrower specific attributes, our models are intended to yield a measurement of expected credit losses that reflects our average historical loss rates for periods subsequent to the twelve-month reversion period. The LGD is based on historical recovery averages for each loan pool, adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a two-year forecast period, with the final twelve months of the forecast period encompassing a reversion process, which management considers to be both reasonable and supportable. This same forecast/reversion period is used for all macroeconomic variables used in all of our models. EAD is estimated using a linear regression model that estimates the average percentage of the loan balance that remains at the time of a default event. Management qualitatively adjusts model results for risk factors that are not considered within our modeling processes but are nonetheless relevant in assessing the expected credit losses within our loan pools. These qualitative factor (“Q-Factor”) adjustments may increase or decrease management's estimate of expected credit losses by a calculated percentage or amount based upon the estimated level of risk. The various risks that may be considered in making Q-Factor adjustments include, among other things, the impact of (i) changes in lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries, (ii) actual and expected changes in international, national, regional, and local economic and business conditions and developments that affect the collectibility of the loan pools, (iii) changes in the nature and volume of the loan pools and in the terms of the underlying loans, (iv) changes in the experience, ability, and depth of our lending management and staff, (v) changes in volume and severity of past due financial assets, the volume of non-accrual assets, and the volume and severity of adversely classified or graded assets, (vi) changes in the quality of our credit review function, (vii) changes in the value of the underlying collateral for loans that are non-collateral dependent, (viii) the existence, growth, and effect of any concentrations of credit and (ix) other factors such as the regulatory, legal and technological environments; competition; and events such as natural disasters or health pandemics. In some cases, management may determine that an individual loan exhibits unique risk characteristics which differentiate the loan from other loans within our loan pools. In such cases, the loans are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Specific allocations of the allowance for credit losses are determined by analyzing the borrower’s ability to repay amounts owed, collateral deficiencies, the relative risk grade of the loan and economic conditions affecting the borrower’s industry, among other things. A loan is considered to be collateral dependent when, based upon management's assessment, the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In such cases, expected credit losses are based on the fair value of the collateral at the measurement date, adjusted for estimated selling costs if satisfaction of the loan depends on the sale of the collateral. We reevaluate the fair value of collateral supporting collateral dependent loans on a quarterly basis. The fair value of real estate collateral supporting collateral dependent loans is evaluated by our internal appraisal services using a methodology that is consistent with the Uniform Standards of Professional Appraisal Practice. The fair value of collateral supporting collateral dependent construction loans is based on an “as is” valuation. |
Off-Balance-Sheet Credit Exposure | Allowance For Credit Losses - Off-Balance-Sheet Credit Exposures: The allowance for credit losses on off-balance-sheet credit exposures is a liability account, calculated in accordance with ASC 326, representing expected credit losses over the contractual period for which we are exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if we have the unconditional right to cancel the obligation. The allowance is reported as a component of accrued interest payable and other liabilities in our consolidated balance sheets. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Further information regarding our policies and methodology used to estimate the allowance for credit losses on off-balance-sheet credit exposures is presented in Note 8 - Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies. Allowance For Credit Losses - Off-Balance-Sheet Credit Exposures. The allowance for credit losses on off-balance-sheet credit exposures is a liability account, calculated in accordance with ASC 326, representing expected credit losses over the contractual period for which we are exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if we have the unconditional right to cancel the obligation. Off-balance-sheet credit exposures primarily consist of amounts available under outstanding lines of credit and letters of credit detailed in the table above. For the period of exposure, the estimate of expected credit losses considers both the likelihood that funding will occur and the amount expected to be funded over the estimated remaining life of the commitment or other off-balance-sheet exposure. The likelihood and expected amount of funding are based on historical utilization rates. The amount of the allowance represents management's best estimate of expected credit losses on commitments expected to be funded over the contractual life of the commitment. Estimating credit losses on amounts expected to be funded uses the same methodology as described for loans in Note 3 - Loans as if such commitments were funded. |
Premises and Equipment | Premises and Equipment. Land is carried at cost. Building and improvements, and furniture and equipment are carried at cost, less accumulated depreciation, computed principally by the straight-line method based on the estimated useful lives of the related property. Leasehold improvements are generally depreciated over the lesser of the term of the respective leases or the estimated useful lives of the improvements. We lease certain office facilities and office equipment under operating leases. We also own certain office facilities which we lease to outside parties under operating lessor leases; however, such leases are not significant. In 2019, we adopted certain accounting standard updates related to accounting for leases as further discussed below. Under the new standards, for operating leases other than those considered to be short-term, we recognize lease right-of-use assets and related lease liabilities. Such amounts are reported as components of premises and equipment and accrued interest payable and other liabilities, respectively, on our accompanying consolidated balance sheet. We do not recognize short-term operating leases on our balance sheet. A short-term operating lease has an original term of 12 months or less and does not have a purchase option that is likely to be exercised. In recognizing lease right-of-use assets and related lease liabilities, we account for lease and non-lease components (such as taxes, insurance, and common area maintenance costs) separately as such amounts are generally readily determinable under our lease contracts. Lease payments over the expected term are discounted using our incremental borrowing rate referenced to the Federal Home Loan Bank Secure Connect advance rates for borrowings of similar term. We also consider renewal and termination options in the determination of the term of the lease. If it is reasonably certain that a renewal or termination option will be exercised, the effects of such options are included in the determination of the expected lease term. Generally, we cannot be reasonably certain about whether or not we will renew a lease until such time the lease is within the last two years of the existing lease term. However, renewal options related to our regional headquarters facilities or operations centers are evaluated on a case-by-case basis, typically in advance of such time frame. When we are reasonably certain that a renewal option will be exercised, we measure/remeasure the right-of-use asset and related lease liability using the lease payments specified for the renewal period or, if such amounts are unspecified, we generally assume an increase (evaluated on a case-by-case basis in light of prevailing market conditions) in the lease payment over the final period of the existing lease term. |
Foreclosed Assets | Foreclosed Assets . Assets acquired through or instead of loan foreclosure are held for sale and are initially recorded at fair value less estimated selling costs when acquired, establishing a new cost basis. Costs after acquisition are generally expensed. If the fair value of the asset declines, a write-down is recorded through expense. The valuation of foreclosed assets is subjective in nature and may be adjusted in the future because of changes in economic conditions. Foreclosed assets are included in other assets in the accompanying consolidated balance sheets and totaled $850 thousand and $1.1 million at December 31, 2020 and 2019. |
Goodwill | Goodwill. Goodwill represents the excess of the cost of businesses acquired over the fair value of the net assets acquired. Goodwill is assigned to reporting units and tested for impairment at least annually on October 1st, or on an interim basis if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying value. See Note 5 - Goodwill and Other Intangible Assets. |
Intangibles and Other Long Lived Assets | Intangibles and Other Long-Lived Assets . Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset, or liability. Our intangible assets relate to core deposits, non-compete agreements and customer relationships. Intangible assets with definite useful lives are amortized on an accelerated basis over their estimated life. Intangible assets with indefinite useful lives are not amortized until their lives are determined to be definite. Intangible assets, premises and equipment and other long-lived assets are tested for impairment whenever events or changes in circumstances indicate the carrying amount of the assets may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value. See Note 5 - Goodwill and Other Intangible Assets. |
Revenue Recognition | Revenue Recognition . In general, for revenue not associated with financial instruments, guarantees and lease contracts, we apply the following steps when recognizing revenue from contracts with customers: (i) identify the contract, (ii) identify the performance obligations, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations and (v) recognize revenue when a performance obligation is satisfied. Our contracts with customers are generally short term in nature, typically due within one year or less or cancellable by us or our customer upon a short notice period. Performance obligations for our customer contracts are generally satisfied at a single point in time, typically when the transaction is complete, or over time. For performance obligations satisfied over time, we primarily use the output method, directly measuring the value of the products/services transferred to the customer, to determine when performance obligations have been satisfied. We typically receive payment from customers and recognize revenue concurrent with the satisfaction of our performance obligations. In most cases, this occurs within a single financial reporting period. For payments received in advance of the satisfaction of performance obligations, revenue recognition is deferred until such time as the performance obligations have been satisfied. In cases where we have not received payment despite satisfaction of our performance obligations, we accrue an estimate of the amount due in the period our performance obligations have been satisfied. For contracts with variable components, only amounts for which collection is probable are accrued. We generally act in a principal capacity, on our own behalf, in most of our contracts with customers. In such transactions, we recognize revenue and the related costs to provide our services on a gross basis in our financial statements. In some cases, we act in an agent capacity, deriving revenue through assisting other entities in transactions with our customers. In such transactions, we recognize revenue and the related costs to provide our services on a net basis in our financial statements. These transactions recognized on a net basis primarily relate to insurance and brokerage commissions and fees derived from our customers' use of various interchange and ATM/debit card networks. |
Stock Based Compensation | Share-Based Payments . Compensation expense for stock options, non-vested stock awards/stock units and deferred stock units is based on the fair value of the award on the measurement date, which, for us, is the date of the grant and is recognized ratably over the service period of the award. Compensation expense for performance stock units is based on the fair value of the award on the measurement date, which, for us, is the date of the grant and is recognized over the service period of the award based upon the probable number of units expected to vest. The fair value of stock options is estimated using a binomial lattice-based valuation model. The fair value of non-vested stock awards/stock units and deferred stock units is generally the market price of our stock on the date of grant. The fair value of performance stock units is generally the market price of our stock on the date of grant discounted by the present value of the dividends expected to be paid on our common stock during the service period of the award because dividend equivalent payments on performance stock units are deferred until such time that the units vest and shares are issued. The impact of forfeitures of share-based payment awards on compensation expense is recognized as forfeitures occur. We have three active stock compensation plans (the 2005 Omnibus Incentive Plan, the 2007 Outside Directors Incentive Plan and the 2015 Omnibus Incentive Plan). All of the plans have been approved by our shareholders. During 2015, the 2015 Omnibus Incentive Plan (“2015 Plan”) was established to replace both the 2005 Omnibus Incentive Plan (“2005 Plan”) and the 2007 Outside Directors Incentive Plan (the “2007 Directors Plan”). All remaining shares authorized for grant under the superseded 2005 Plan and 2007 Directors Plan were transferred to the 2015 Plan. Our stock compensation plans were established to (i) motivate superior performance by means of performance-related incentives, (ii) encourage and provide for the acquisition of an ownership interest in our company by employees and non-employee directors and (iii) enable us to attract and retain qualified and competent persons as employees and to serve as members of our board of directors. Under the 2015 Plan, we may grant, among other things, nonqualified stock options, incentive stock options, stock awards, stock appreciation rights, restricted stock units, performance share units or any combination thereof to certain employees and non-employee directors. Any of the authorized shares may be used for any type of award allowable under the Plan. The Compensation and Benefits Committee (“Committee”) of our Board of Directors has sole authority to (i) establish the awards to be issued, (ii) select the employees and non-employee directors to receive awards, and (iii) approve the terms and conditions of each award contract. Each award under the stock plans is evidenced by an award agreement that specifies the award price, the duration of the award, the number of shares to which the award pertains, and such other provisions as the Committee determines. For stock options, the option price for each grant is at least equal to the fair market value of a share of Cullen/Frost’s common stock on the date of grant. Options granted expire at such time as the Committee determines at the date of grant and in no event does the exercise period exceed a maximum of ten years. As defined in the plans, outstanding awards may immediately vest upon a change-in-control of Cullen/Frost and, in the case of awards granted under the 2015 Plan, subsequent termination resulting from the change in control. ten four four Valuation of Stock-Based Compensation . For the purposes of recognizing stock-based compensation expense, the fair value of non-vested stock awards/stock units and deferred stock units is generally the market price of the stock on the measurement date, which, for us, is the date of the award. The fair value of performance stock units is determined in a similar manner except that the market price of the stock on the measurement date is discounted by the present value of the dividends expected to be paid on our common stock during the service period of the award because dividend equivalent payments on performance stock units are deferred until such time that the units vest and shares are issued. In applying this discount to the market price of our stock on the measurement date, we assumed we would pay a flat quarterly dividend during the service period equal to our most recent dividend payment, which was $0.72, $0.71 and $0.67 in 2020, 2019, and 2018 respectively discounted at a weighted-average risk-free rate of 0.19%, 1.65% and 2.95% in 2020, 2019, and 2018 respectively. |
Advertising Costs | Advertising Costs. Advertising costs are expensed as incurred. |
Income Taxes | Income Taxes . Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities (excluding deferred tax assets and liabilities related to business combinations or components of other comprehensive income). Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. Interest and/or penalties related to income taxes are reported as a component of income tax expense. The income tax effects related to settlements of share-based payment awards are reported in earnings as an increase (or decrease) to income tax expense. See Note 13 - Income Taxes. |
Basic and Diluted Earnings Per Common Share | Basic and Diluted Earnings Per Common Share. Earnings per common share is computed using the two-class method prescribed under ASC Topic 260, “Earnings Per Share.” ASC 260 provides that unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and shall be included in the computation of earnings per share pursuant to the two-class method. We have determined that our outstanding non-vested stock awards/stock units and deferred stock units are participating securities. Under the two-class method, basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. A reconciliation of the weighted-average shares used in calculating basic earnings per common share and the weighted average common shares used in calculating diluted earnings per common share for the reported periods is provided in Note 10 - Earnings Per Common Share. Earnings Per Common Share . Earnings per common share is computed using the two-class method. Basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include non-vested stock awards/stock units, deferred stock units and performance stock units (during the performance period), though no actual shares of common stock related to any type of stock unit have been issued. Non-vested stock awards/stock units and deferred stock units are considered participating securities because holders of these securities receive non-forfeitable dividends at the same rate as holders of our common stock. Holders of performance stock units receive dividend equivalent payments for dividends paid during the performance period at the vesting date of the award based upon the number of units that ultimately vest. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. |
Comprehensive Income | Comprehensive Income. Comprehensive income includes all changes in shareholders’ equity during a period, except those resulting from transactions with shareholders. Besides net income, other components of our comprehensive income include the after tax effect of changes in the net unrealized gain/loss on securities available for sale, changes in the net unrealized gain on securities transferred to held to maturity and changes in the net actuarial gain/loss on defined benefit post-retirement benefit plans. See Note 14 - Other Comprehensive Income (Loss). |
Derivative Financial Instruments | Derivative Financial Instruments . Our hedging policies permit the use of various derivative financial instruments to manage interest rate risk or to hedge specified assets and liabilities. All derivatives are recorded at fair value on our balance sheet. Derivatives executed with the same counterparty are generally subject to master netting arrangements, however, fair value amounts recognized for derivatives and fair value amounts recognized for the right/obligation to reclaim/return cash collateral are not offset for financial reporting purposes. We may be required to recognize certain contracts and commitments as derivatives when the characteristics of those contracts and commitments meet the definition of a derivative. To qualify for hedge accounting, derivatives must be highly effective at reducing the risk associated with the exposure being hedged and must be designated as a hedge at the inception of the derivative contract. We consider a hedge to be highly effective if the change in fair value of the derivative hedging instrument is within 80% to 125% of the opposite change in the fair value of the hedged item attributable to the hedged risk. If derivative instruments are designated as hedges of fair values, and such hedges are highly effective, both the change in the fair value of the hedge and the hedged item are included in current earnings. Fair value adjustments related to cash flow hedges are recorded in other comprehensive income and are reclassified to earnings when the hedged transaction is reflected in earnings. Ineffective portions of hedges are reflected in earnings as they occur. Actual cash receipts and/or payments and related accruals on derivatives related to hedges are recorded as adjustments to the interest income or interest expense associated with the hedged item. During the life of the hedge, we formally assess whether derivatives designated as hedging instruments continue to be highly effective in offsetting changes in the fair value or cash flows of hedged items. If it is determined that a hedge has ceased to be highly effective, we will discontinue hedge accounting prospectively. At such time, previous adjustments to the carrying value of the hedged item are reversed into current earnings and the derivative instrument is reclassified to a trading position recorded at fair value. |
Fair Value Measurements | Fair Value Measurements . In general, fair values of financial instruments are based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and our creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. See Note 17 - Fair Value Measurements. The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, we utilize valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: • Level 1 Inputs - Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. • Level 2 Inputs - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means. • Level 3 Inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and our creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. Our valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes our valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below. Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with our monthly and/or quarterly valuation process. Financial Assets and Financial Liabilities: Financial assets and financial liabilities measured at fair value on a recurring basis include the following: Securities Available for Sale . U.S. Treasury securities are reported at fair value utilizing Level 1 inputs. Other securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For these securities, we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. We review the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, we do not purchase investment portfolio securities that are esoteric or that have a complicated structure. Our entire portfolio consists of traditional investments, nearly all of which are U.S. Treasury obligations, federal agency bullet or mortgage pass-through securities, or general obligation or revenue based municipal bonds. Pricing for such instruments is fairly generic and is easily obtained. From time to time, we will validate prices supplied by the independent pricing service by comparison to prices obtained from third-party sources or derived using internal models. Trading Securities . U.S. Treasury securities and exchange-listed common stock are reported at fair value utilizing Level 1 inputs. Other securities classified as trading are reported at fair value utilizing Level 2 inputs in the same manner as described above for securities available for sale. Derivatives . Derivatives are generally reported at fair value utilizing Level 2 inputs, except for foreign currency contracts, which are reported at fair value utilizing Level 1 inputs. We obtain dealer quotations and utilize internally developed valuation models to value commodity swaps/options. We utilize internally developed valuation models and/or third-party models with observable market data inputs to validate the valuations provided by the dealers. Though there has never been a significant discrepancy in the valuations, should such a significant discrepancy arise, we would obtain price verification from a third-party dealer. We utilize internal valuation models with observable market data inputs to estimate fair values of customer interest rate swaps, caps and floors. We also obtain dealer quotations for these derivatives for comparative purposes to assess the reasonableness of the model valuations. In cases where significant credit valuation adjustments are incorporated into the estimation of fair value, reported amounts are considered to have been derived utilizing Level 3 inputs. For purposes of potential valuation adjustments to our derivative positions, we evaluate the credit risk of our counterparties as well as ours. Accordingly, we have considered factors such as the likelihood of our default and the default of our counterparties, our net exposures and remaining contractual life, among other things, in determining if any fair value adjustments related to credit risk are required. Counterparty exposure is evaluated by netting positions that are subject to master netting arrangements, as well as considering the amount of collateral securing the position. We review our counterparty exposure on a regular basis, and, when necessary, appropriate business actions are taken to adjust the exposure. We also utilize this approach to estimate our own credit risk on derivative liability positions. To date, we have not realized any significant losses due to a counterparty’s inability to pay any net uncollateralized Non-Financial Assets and Non-Financial Liabilities: We do not have any non-financial assets or non-financial liabilities measured at fair value on a recurring basis. Certain non-financial assets measured at fair value on a non-recurring basis include foreclosed assets (upon initial recognition or subsequent impairment), non-financial assets and non-financial liabilities measured at fair value in the second step of a goodwill impairment test, and intangible assets and other non-financial long-lived assets measured at fair value for impairment assessment. Non-financial assets measured at fair value on a non-recurring basis during the reported periods include certain foreclosed assets which, upon initial recognition, were remeasured and reported at fair value through a charge-off to the allowance for credit losses on loans and certain foreclosed assets which, subsequent to their initial recognition, were remeasured at fair value through a write-down included in other non-interest expense. The fair value of a foreclosed asset is estimated using Level 2 inputs based on observable market data or Level 3 inputs based on customized discounting criteria. During the reported periods, all fair value measurements for foreclosed assets utilized Level 2 inputs. ASC Topic 825, “Financial Instruments,” requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. The estimated fair value approximates carrying value for cash and cash equivalents, accrued interest and the cash surrender value of life insurance policies. The methodologies for other financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis are discussed below: Loans . The estimated fair value approximates carrying value for variable-rate loans that reprice frequently and with no significant change in credit risk. The fair value of fixed-rate loans and variable-rate loans which reprice on an infrequent basis is estimated by discounting future cash flows using the current interest rates at which similar loans with similar terms would be made to borrowers of similar credit quality. An overall valuation adjustment is made for specific credit risks as well as general portfolio credit risk. Deposits . The estimated fair value approximates carrying value for demand deposits. The fair value of fixed-rate deposit liabilities with defined maturities is estimated by discounting future cash flows using the interest rates currently offered for deposits of similar remaining maturities. The estimated fair value of deposits does not take into account the value of our long-term relationships with depositors, commonly known as core deposit intangibles, which are separate intangible assets, and not considered financial instruments. Nonetheless, we would likely realize a core deposit premium if our deposit portfolio were sold in the principal market for such deposits. Borrowed Funds . The estimated fair value approximates carrying value for short-term borrowings. The fair value of long-term fixed-rate borrowings is estimated using quoted market prices, if available, or by discounting future cash flows using current interest rates for similar financial instruments. The estimated fair value approximates carrying value for variable-rate junior subordinated deferrable interest debentures that reprice quarterly. Loan Commitments, Standby and Commercial Letters of Credit . Our lending commitments have variable interest rates and “escape” clauses if the customer’s credit quality deteriorates. Therefore, the fair values of these items are not significant and are not included in the following table. |
Transfers of Financial Assets | Transfers of Financial Assets . Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (i) the assets have been isolated from us, (ii) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (iii) we do not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. |
Loss Contingencies | Loss Contingencies . Loss contingencies, including claims and legal actions arising in the ordinary course of business are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. |
Trust Assets | Trust Assets. Assets of our trust department, other than cash on deposit at Frost Bank, are not included in the accompanying financial statements because they are not our assets. |
Reclassification, Comparability Adjustment | Certain items in prior financial statements have been reclassified to conform to the current presentation. |
Accounting Changes, Reclassifications and Restatement | Accounting Changes, Reclassifications and Restatements. Certain items in prior financial statements have been reclassified to conform to the current presentation. As discussed above, on January 1, 2020 we adopted the provisions of ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Upon adoption, we recognized an after-tax cumulative effect reduction to retained earnings totaling $29.3 million, as detailed in the table below. Operating results for periods after January 1, 2020 are presented in accordance with ASC 326 while prior period amounts continue to be reported in accordance with previously applicable standards and the accounting policies as described above. The following table details the impact of the adoption of ASC 326 on the allowance for credit losses as of January 1, 2020. January 1, 2020 Pre-Adoption Allowance Impact of Adoption Post-Adoption Allowance Cumulative Effect on Retained Earnings Securities held to maturity: U.S. Treasury $ — $ — $ — $ — Residential mortgage-backed securities — — — — States and political subdivisions — 215 215 (170) Other — — — — Total $ — $ 215 $ 215 $ (170) Loans: Commercial and industrial $ 51,593 $ 21,263 $ 72,856 $ (16,798) Energy 37,382 (10,453) 26,929 8,258 Commercial real estate 31,037 (13,519) 17,518 10,680 Consumer real estate 4,113 2,392 6,505 (1,890) Consumer and other 8,042 (2,248) 5,794 1,776 Total $ 132,167 $ (2,565) $ 129,602 $ 2,026 Off-balance-sheet credit exposures $ 500 $ 39,377 $ 39,877 $ (31,108) On January 1, 2019, we adopted certain accounting standard updates related to accounting for leases, primarily ASU 2016-02 “Leases (Topic 842)” and subsequent updates. Among other things, these updates require lessees to recognize a lease liability, measured on a discounted basis, related to the lessee's obligation to make lease payments arising under a lease contract; and a right-of-use asset related to the lessee’s right to use, or control the use of, a specified asset for the lease term. The updates did not significantly change lease accounting requirements applicable to lessors and did not significantly impact our financial statements in relation to contracts whereby we act as a lessor. We adopted the updates using a modified-retrospective transition approach and recognized right-of-use lease assets and related lease liabilities totaling $170.5 million and $174.4 million, respectively, as of January 1, 2019. We elected to apply certain practical adoption expedients provided under the updates whereby we did not reassess (i) whether any expired or existing contracts are or contain leases, (ii) the lease classification for any expired or existing leases and (iii) initial direct costs for any existing leases. We did not elect to apply the recognition requirements of the updates to short-term leases. See Note 4 - Premises and Equipment and Lease Commitments. On January 1, 2019, we also adopted ASU 2017-08 “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.” ASU 2017-08 shortens the amortization period for certain callable debt securities held at a premium to require such premiums to be amortized to the earliest call date unless applicable guidance related to certain pools of securities is applied to consider estimated prepayments. Under prior guidance, entities were generally required to amortize premiums on individual, non-pooled callable debt securities as a yield adjustment over the contractual life of the security. ASU 2017-08 does not change the accounting for callable debt securities held at a discount. Upon adoption, using a modified retrospective transition adoption approach, we recognized a cumulative effect reduction to retained earnings totaling $14.7 million. On January 1, 2018, we adopted ASU 2018-02, “Income Statement - Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” In accordance with ASU 2018-02, we elected to reclassify certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act, which was enacted on December 22, 2017 from accumulated other comprehensive income to retained earnings. Such amounts, which totaled $9.5 million, related to a net actuarial loss on defined benefit post-retirement plans and unrealized gains on securities available for sale and securities transferred to held to maturity. See Note 14 - Other Comprehensive Income (Loss). Notwithstanding this election made in accordance with ASU 2018-02, our policy is to release such income tax effects only when the entire portfolio to which the underlying transactions relate is liquidated, sold or extinguished. |
Receivables, Loans, Notes Recei
Receivables, Loans, Notes Receivable, and Others (Policies) | 12 Months Ended |
Dec. 31, 2020 | |
Receivables [Abstract] | |
Allowance for Credit Losses Loans | Allowance for Credit Losses - Loans: The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present management's best estimate of the net amount expected to be collected. Loans are charged-off against the allowance when deemed uncollectible by management. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on loans from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on loans is presented in Note 3 - Loans. Allowance For Credit Losses - Loans. The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present the net amount expected to be collected. The amount of the allowance represents management's best estimate of current expected credit losses on loans considering available information, from internal and external sources, relevant to assessing collectibility over the loans' contractual terms, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless (i) management has a reasonable expectation that a trouble debt restructuring will be executed with an individual borrower or (ii) such extension or renewal options are not unconditionally cancellable by us and, in such cases, the borrower is likely to meet applicable conditions and likely to request extension or renewal. Relevant available information includes historical credit loss experience, current conditions and reasonable and supportable forecasts. While historical credit loss experience provides the basis for the estimation of expected credit losses, adjustments to historical loss information may be made for differences in current portfolio-specific risk characteristics, environmental conditions or other relevant factors. The allowance for credit losses is measured on a collective basis for portfolios of loans when similar risk characteristics exist. Loans that do not share risk characteristics are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Expected credit losses for collateral dependent loans, including loans where the borrower is experiencing financial difficulty but foreclosure is not probable, are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. Credit loss expense related to loans reflects the totality of actions taken on all loans for a particular period including any necessary increases or decreases in the allowance related to changes in credit loss expectations associated with specific loans or pools of loans. Portions of the allowance may be allocated for specific credits; however, the entire allowance is available for any credit that, in management’s judgment, should be charged off. While management utilizes its best judgment and information available, the ultimate appropriateness of the allowance is dependent upon a variety of factors beyond our control, including the performance of our loan portfolio, the economy, changes in interest rates and the view of the regulatory authorities toward loan classifications. In calculating the allowance for credit losses, most loans are segmented into pools based upon similar characteristics and risk profiles. Common characteristics and risk profiles include the type/purpose of loan, underlying collateral, geographical similarity and historical/expected credit loss patterns. In developing these loan pools for the purposes of modeling expected credit losses, we also analyzed the degree of correlation in how loans within each portfolio respond when subjected to varying economic conditions and scenarios as well as other portfolio stress factors. For modeling purposes, our loan pools include (i) commercial and industrial and energy - non-revolving, (ii) commercial and industrial and energy - revolving, (iii) commercial real estate - owner occupied, (iv) commercial real estate - non-owner occupied, (v) commercial real estate - construction/land development, (vi) consumer real estate and (vii) consumer and other. We periodically reassess each pool to ensure the loans within the pool continue to share similar characteristics and risk profiles and to determine whether further segmentation is necessary. For each loan pool, we measure expected credit losses over the life of each loan utilizing a combination of models which measure (i) probability of default (“PD”), which is the likelihood that loan will stop performing/default, (ii) probability of attrition (“PA”), which is the likelihood that a loan will pay-off prior to maturity, (iii) loss given default (“LGD”), which is the expected loss rate for loans in default and (iv) exposure at default (“EAD”), which is the estimated outstanding principal balance of the loans upon default, including the expected funding of unfunded commitments outstanding as of the measurement date. For certain commercial loan portfolios, the PD is calculated using a transition matrix to determine the likelihood of a customer’s risk grade migrating from one specified range of risk grades to a different specified range. Expected credit losses are calculated as the product of PD (adjusted for attrition), LGD and EAD. This methodology builds on default probabilities already incorporated into our risk grading process by utilizing pool-specific historical loss rates to calculate expected credit losses. These pool-specific historical loss rates may be adjusted for current macroeconomic assumptions, as further discussed below, and other factors such as differences in underwriting standards, portfolio mix, or when historical asset terms do not reflect the contractual terms of the financial assets being evaluated as of the measurement date. Each time we measure expected credit losses, we assess the relevancy of historical loss information and consider any necessary adjustments to address any differences in asset-specific characteristics. Due to their short-term nature, expected credit losses for overdrafts included in consumer and other loans are based solely upon a weighting of recent historical charge-offs over a period of three years. The measurement of expected credit losses is impacted by loan/borrower attributes and certain macroeconomic variables. Significant loan/borrower attributes utilized in our modeling processes include, among other things, (i) origination date, (ii) maturity date, (iii) payment type, (iv) collateral type and amount, (v) current risk grade, (vi) current unpaid balance and commitment utilization rate, (vii) payment status/delinquency history and (viii) expected recoveries of previously charged-off amounts. Significant macroeconomic variables utilized in our modeling processes include, among other things, (i) Gross State Product for Texas and U.S. Gross Domestic Product, (ii) selected market interest rates including U.S. Treasury rates, bank prime rate, 30-year fixed mortgage rate, BBB corporate bond rate, among others, (iii) unemployment rates, (iv) commercial and residential property prices in Texas and the U.S. as a whole, (v) West Texas Intermediate crude oil price and (vi) total stock market index. PD and PA were estimated by analyzing internally-sourced data related to historical performance of each loan pool over a complete economic cycle. PD and PA are adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a reasonable and supportable forecast period. We have determined that we are reasonably able to forecast the macroeconomic variables used in our modeling processes with an acceptable degree of confidence for a total of two years with the last twelve months of the forecast period encompassing a reversion process whereby the forecasted macroeconomic variables are reverted to their historical mean utilizing a rational, systematic basis. The macroeconomic variables utilized as inputs in our modeling processes were subjected to a variety of analysis procedures and were selected primarily based on statistical relevancy and correlation to our historical credit losses. By reverting these modeling inputs to their historical mean and considering loan/borrower specific attributes, our models are intended to yield a measurement of expected credit losses that reflects our average historical loss rates for periods subsequent to the twelve-month reversion period. The LGD is based on historical recovery averages for each loan pool, adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a two-year forecast period, with the final twelve months of the forecast period encompassing a reversion process, which management considers to be both reasonable and supportable. This same forecast/reversion period is used for all macroeconomic variables used in all of our models. EAD is estimated using a linear regression model that estimates the average percentage of the loan balance that remains at the time of a default event. Management qualitatively adjusts model results for risk factors that are not considered within our modeling processes but are nonetheless relevant in assessing the expected credit losses within our loan pools. These qualitative factor (“Q-Factor”) adjustments may increase or decrease management's estimate of expected credit losses by a calculated percentage or amount based upon the estimated level of risk. The various risks that may be considered in making Q-Factor adjustments include, among other things, the impact of (i) changes in lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries, (ii) actual and expected changes in international, national, regional, and local economic and business conditions and developments that affect the collectibility of the loan pools, (iii) changes in the nature and volume of the loan pools and in the terms of the underlying loans, (iv) changes in the experience, ability, and depth of our lending management and staff, (v) changes in volume and severity of past due financial assets, the volume of non-accrual assets, and the volume and severity of adversely classified or graded assets, (vi) changes in the quality of our credit review function, (vii) changes in the value of the underlying collateral for loans that are non-collateral dependent, (viii) the existence, growth, and effect of any concentrations of credit and (ix) other factors such as the regulatory, legal and technological environments; competition; and events such as natural disasters or health pandemics. In some cases, management may determine that an individual loan exhibits unique risk characteristics which differentiate the loan from other loans within our loan pools. In such cases, the loans are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Specific allocations of the allowance for credit losses are determined by analyzing the borrower’s ability to repay amounts owed, collateral deficiencies, the relative risk grade of the loan and economic conditions affecting the borrower’s industry, among other things. A loan is considered to be collateral dependent when, based upon management's assessment, the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In such cases, expected credit losses are based on the fair value of the collateral at the measurement date, adjusted for estimated selling costs if satisfaction of the loan depends on the sale of the collateral. We reevaluate the fair value of collateral supporting collateral dependent loans on a quarterly basis. The fair value of real estate collateral supporting collateral dependent loans is evaluated by our internal appraisal services using a methodology that is consistent with the Uniform Standards of Professional Appraisal Practice. The fair value of collateral supporting collateral dependent construction loans is based on an “as is” valuation. |
Fair Value Measures and Disclos
Fair Value Measures and Disclosures (Policies) | 12 Months Ended |
Dec. 31, 2020 | |
Fair Value Disclosures [Abstract] | |
Off-Balance-Sheet Credit Exposure | Allowance For Credit Losses - Off-Balance-Sheet Credit Exposures: The allowance for credit losses on off-balance-sheet credit exposures is a liability account, calculated in accordance with ASC 326, representing expected credit losses over the contractual period for which we are exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if we have the unconditional right to cancel the obligation. The allowance is reported as a component of accrued interest payable and other liabilities in our consolidated balance sheets. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Further information regarding our policies and methodology used to estimate the allowance for credit losses on off-balance-sheet credit exposures is presented in Note 8 - Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies. Allowance For Credit Losses - Off-Balance-Sheet Credit Exposures. The allowance for credit losses on off-balance-sheet credit exposures is a liability account, calculated in accordance with ASC 326, representing expected credit losses over the contractual period for which we are exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if we have the unconditional right to cancel the obligation. Off-balance-sheet credit exposures primarily consist of amounts available under outstanding lines of credit and letters of credit detailed in the table above. For the period of exposure, the estimate of expected credit losses considers both the likelihood that funding will occur and the amount expected to be funded over the estimated remaining life of the commitment or other off-balance-sheet exposure. The likelihood and expected amount of funding are based on historical utilization rates. The amount of the allowance represents management's best estimate of expected credit losses on commitments expected to be funded over the contractual life of the commitment. Estimating credit losses on amounts expected to be funded uses the same methodology as described for loans in Note 3 - Loans as if such commitments were funded. |
Earnings Per Share (Policies)
Earnings Per Share (Policies) | 12 Months Ended |
Dec. 31, 2020 | |
Earnings Per Share [Abstract] | |
Basic and Diluted Earnings Per Common Share | Basic and Diluted Earnings Per Common Share. Earnings per common share is computed using the two-class method prescribed under ASC Topic 260, “Earnings Per Share.” ASC 260 provides that unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and shall be included in the computation of earnings per share pursuant to the two-class method. We have determined that our outstanding non-vested stock awards/stock units and deferred stock units are participating securities. Under the two-class method, basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. A reconciliation of the weighted-average shares used in calculating basic earnings per common share and the weighted average common shares used in calculating diluted earnings per common share for the reported periods is provided in Note 10 - Earnings Per Common Share. Earnings Per Common Share . Earnings per common share is computed using the two-class method. Basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include non-vested stock awards/stock units, deferred stock units and performance stock units (during the performance period), though no actual shares of common stock related to any type of stock unit have been issued. Non-vested stock awards/stock units and deferred stock units are considered participating securities because holders of these securities receive non-forfeitable dividends at the same rate as holders of our common stock. Holders of performance stock units receive dividend equivalent payments for dividends paid during the performance period at the vesting date of the award based upon the number of units that ultimately vest. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. |
Compensation Related Costs, Pos
Compensation Related Costs, Postemployment Benefits (Policies) | 12 Months Ended |
Dec. 31, 2020 | |
Postemployment Benefits [Abstract] | |
Stock Based Compensation | Share-Based Payments . Compensation expense for stock options, non-vested stock awards/stock units and deferred stock units is based on the fair value of the award on the measurement date, which, for us, is the date of the grant and is recognized ratably over the service period of the award. Compensation expense for performance stock units is based on the fair value of the award on the measurement date, which, for us, is the date of the grant and is recognized over the service period of the award based upon the probable number of units expected to vest. The fair value of stock options is estimated using a binomial lattice-based valuation model. The fair value of non-vested stock awards/stock units and deferred stock units is generally the market price of our stock on the date of grant. The fair value of performance stock units is generally the market price of our stock on the date of grant discounted by the present value of the dividends expected to be paid on our common stock during the service period of the award because dividend equivalent payments on performance stock units are deferred until such time that the units vest and shares are issued. The impact of forfeitures of share-based payment awards on compensation expense is recognized as forfeitures occur. We have three active stock compensation plans (the 2005 Omnibus Incentive Plan, the 2007 Outside Directors Incentive Plan and the 2015 Omnibus Incentive Plan). All of the plans have been approved by our shareholders. During 2015, the 2015 Omnibus Incentive Plan (“2015 Plan”) was established to replace both the 2005 Omnibus Incentive Plan (“2005 Plan”) and the 2007 Outside Directors Incentive Plan (the “2007 Directors Plan”). All remaining shares authorized for grant under the superseded 2005 Plan and 2007 Directors Plan were transferred to the 2015 Plan. Our stock compensation plans were established to (i) motivate superior performance by means of performance-related incentives, (ii) encourage and provide for the acquisition of an ownership interest in our company by employees and non-employee directors and (iii) enable us to attract and retain qualified and competent persons as employees and to serve as members of our board of directors. Under the 2015 Plan, we may grant, among other things, nonqualified stock options, incentive stock options, stock awards, stock appreciation rights, restricted stock units, performance share units or any combination thereof to certain employees and non-employee directors. Any of the authorized shares may be used for any type of award allowable under the Plan. The Compensation and Benefits Committee (“Committee”) of our Board of Directors has sole authority to (i) establish the awards to be issued, (ii) select the employees and non-employee directors to receive awards, and (iii) approve the terms and conditions of each award contract. Each award under the stock plans is evidenced by an award agreement that specifies the award price, the duration of the award, the number of shares to which the award pertains, and such other provisions as the Committee determines. For stock options, the option price for each grant is at least equal to the fair market value of a share of Cullen/Frost’s common stock on the date of grant. Options granted expire at such time as the Committee determines at the date of grant and in no event does the exercise period exceed a maximum of ten years. As defined in the plans, outstanding awards may immediately vest upon a change-in-control of Cullen/Frost and, in the case of awards granted under the 2015 Plan, subsequent termination resulting from the change in control. ten four four Valuation of Stock-Based Compensation . For the purposes of recognizing stock-based compensation expense, the fair value of non-vested stock awards/stock units and deferred stock units is generally the market price of the stock on the measurement date, which, for us, is the date of the award. The fair value of performance stock units is determined in a similar manner except that the market price of the stock on the measurement date is discounted by the present value of the dividends expected to be paid on our common stock during the service period of the award because dividend equivalent payments on performance stock units are deferred until such time that the units vest and shares are issued. In applying this discount to the market price of our stock on the measurement date, we assumed we would pay a flat quarterly dividend during the service period equal to our most recent dividend payment, which was $0.72, $0.71 and $0.67 in 2020, 2019, and 2018 respectively discounted at a weighted-average risk-free rate of 0.19%, 1.65% and 2.95% in 2020, 2019, and 2018 respectively. |
Fair Value Measures and Discl_2
Fair Value Measures and Disclosures (Policies) | 12 Months Ended |
Dec. 31, 2020 | |
Fair Value Disclosures [Abstract] | |
Fair Value Measurements | Fair Value Measurements . In general, fair values of financial instruments are based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and our creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. See Note 17 - Fair Value Measurements. The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, we utilize valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: • Level 1 Inputs - Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. • Level 2 Inputs - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means. • Level 3 Inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and our creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. Our valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes our valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below. Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with our monthly and/or quarterly valuation process. Financial Assets and Financial Liabilities: Financial assets and financial liabilities measured at fair value on a recurring basis include the following: Securities Available for Sale . U.S. Treasury securities are reported at fair value utilizing Level 1 inputs. Other securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For these securities, we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. We review the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, we do not purchase investment portfolio securities that are esoteric or that have a complicated structure. Our entire portfolio consists of traditional investments, nearly all of which are U.S. Treasury obligations, federal agency bullet or mortgage pass-through securities, or general obligation or revenue based municipal bonds. Pricing for such instruments is fairly generic and is easily obtained. From time to time, we will validate prices supplied by the independent pricing service by comparison to prices obtained from third-party sources or derived using internal models. Trading Securities . U.S. Treasury securities and exchange-listed common stock are reported at fair value utilizing Level 1 inputs. Other securities classified as trading are reported at fair value utilizing Level 2 inputs in the same manner as described above for securities available for sale. Derivatives . Derivatives are generally reported at fair value utilizing Level 2 inputs, except for foreign currency contracts, which are reported at fair value utilizing Level 1 inputs. We obtain dealer quotations and utilize internally developed valuation models to value commodity swaps/options. We utilize internally developed valuation models and/or third-party models with observable market data inputs to validate the valuations provided by the dealers. Though there has never been a significant discrepancy in the valuations, should such a significant discrepancy arise, we would obtain price verification from a third-party dealer. We utilize internal valuation models with observable market data inputs to estimate fair values of customer interest rate swaps, caps and floors. We also obtain dealer quotations for these derivatives for comparative purposes to assess the reasonableness of the model valuations. In cases where significant credit valuation adjustments are incorporated into the estimation of fair value, reported amounts are considered to have been derived utilizing Level 3 inputs. For purposes of potential valuation adjustments to our derivative positions, we evaluate the credit risk of our counterparties as well as ours. Accordingly, we have considered factors such as the likelihood of our default and the default of our counterparties, our net exposures and remaining contractual life, among other things, in determining if any fair value adjustments related to credit risk are required. Counterparty exposure is evaluated by netting positions that are subject to master netting arrangements, as well as considering the amount of collateral securing the position. We review our counterparty exposure on a regular basis, and, when necessary, appropriate business actions are taken to adjust the exposure. We also utilize this approach to estimate our own credit risk on derivative liability positions. To date, we have not realized any significant losses due to a counterparty’s inability to pay any net uncollateralized Non-Financial Assets and Non-Financial Liabilities: We do not have any non-financial assets or non-financial liabilities measured at fair value on a recurring basis. Certain non-financial assets measured at fair value on a non-recurring basis include foreclosed assets (upon initial recognition or subsequent impairment), non-financial assets and non-financial liabilities measured at fair value in the second step of a goodwill impairment test, and intangible assets and other non-financial long-lived assets measured at fair value for impairment assessment. Non-financial assets measured at fair value on a non-recurring basis during the reported periods include certain foreclosed assets which, upon initial recognition, were remeasured and reported at fair value through a charge-off to the allowance for credit losses on loans and certain foreclosed assets which, subsequent to their initial recognition, were remeasured at fair value through a write-down included in other non-interest expense. The fair value of a foreclosed asset is estimated using Level 2 inputs based on observable market data or Level 3 inputs based on customized discounting criteria. During the reported periods, all fair value measurements for foreclosed assets utilized Level 2 inputs. ASC Topic 825, “Financial Instruments,” requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. The estimated fair value approximates carrying value for cash and cash equivalents, accrued interest and the cash surrender value of life insurance policies. The methodologies for other financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis are discussed below: Loans . The estimated fair value approximates carrying value for variable-rate loans that reprice frequently and with no significant change in credit risk. The fair value of fixed-rate loans and variable-rate loans which reprice on an infrequent basis is estimated by discounting future cash flows using the current interest rates at which similar loans with similar terms would be made to borrowers of similar credit quality. An overall valuation adjustment is made for specific credit risks as well as general portfolio credit risk. Deposits . The estimated fair value approximates carrying value for demand deposits. The fair value of fixed-rate deposit liabilities with defined maturities is estimated by discounting future cash flows using the interest rates currently offered for deposits of similar remaining maturities. The estimated fair value of deposits does not take into account the value of our long-term relationships with depositors, commonly known as core deposit intangibles, which are separate intangible assets, and not considered financial instruments. Nonetheless, we would likely realize a core deposit premium if our deposit portfolio were sold in the principal market for such deposits. Borrowed Funds . The estimated fair value approximates carrying value for short-term borrowings. The fair value of long-term fixed-rate borrowings is estimated using quoted market prices, if available, or by discounting future cash flows using current interest rates for similar financial instruments. The estimated fair value approximates carrying value for variable-rate junior subordinated deferrable interest debentures that reprice quarterly. Loan Commitments, Standby and Commercial Letters of Credit . Our lending commitments have variable interest rates and “escape” clauses if the customer’s credit quality deteriorates. Therefore, the fair values of these items are not significant and are not included in the following table. |
Summary of Significant Accoun_3
Summary of Significant Accounting Policies (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Accounting Policies [Abstract] | |
Additional Cash Flow Information | Additional cash flow information was as follows: Year Ended December 31, 2020 2019 2018 Cash paid for interest $ 49,300 $ 124,781 $ 89,270 Cash paid for income tax 44,140 45,352 5,112 Significant non-cash transactions: Transfer of securities from available for sale to held to maturity — 377,812 — Unsettled securities transactions 57,783 — 330 Loans foreclosed and transferred to other real estate owned and foreclosed assets 140 1,348 2,899 Loans to facilitate the sale of other real estate owned — 847 — Right-of-use lease assets obtained in exchange for lessee operating lease liabilities 18,284 319,286 — Treasury stock issued to 401(k) stock purchase plan 10,307 — — |
Accounting Standards Update and Change in Accounting Principle | The following table details the impact of the adoption of ASC 326 on the allowance for credit losses as of January 1, 2020. January 1, 2020 Pre-Adoption Allowance Impact of Adoption Post-Adoption Allowance Cumulative Effect on Retained Earnings Securities held to maturity: U.S. Treasury $ — $ — $ — $ — Residential mortgage-backed securities — — — — States and political subdivisions — 215 215 (170) Other — — — — Total $ — $ 215 $ 215 $ (170) Loans: Commercial and industrial $ 51,593 $ 21,263 $ 72,856 $ (16,798) Energy 37,382 (10,453) 26,929 8,258 Commercial real estate 31,037 (13,519) 17,518 10,680 Consumer real estate 4,113 2,392 6,505 (1,890) Consumer and other 8,042 (2,248) 5,794 1,776 Total $ 132,167 $ (2,565) $ 129,602 $ 2,026 Off-balance-sheet credit exposures $ 500 $ 39,377 $ 39,877 $ (31,108) |
Securities (Tables)
Securities (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Investments, Debt and Equity Securities [Abstract] | |
Debt Securities, Held-to-maturity | A summary of the amortized cost, fair value and allowance for credit losses related to securities held to maturity as of December 31, 2020 and 2019 is presented below. Amortized Gross Gross Estimated Allowance Net December 31, 2020 Residential mortgage-backed securities $ 528,784 $ 41,742 $ — $ 570,526 $ — $ 528,784 States and political subdivisions 1,415,549 65,321 — 1,480,870 (160) 1,415,389 Other 1,500 — — 1,500 — 1,500 Total $ 1,945,833 $ 107,063 $ — $ 2,052,896 $ (160) $ 1,945,673 December 31, 2019 Residential mortgage-backed securities $ 530,861 $ 22 $ 9,365 $ 521,518 $ — $ 530,861 States and political subdivisions 1,497,644 28,909 896 1,525,657 — 1,497,644 Other 1,500 — — 1,500 — 1,500 Total $ 2,030,005 $ 28,931 $ 10,261 $ 2,048,675 $ — $ 2,030,005 |
Moody's and Standard & Poor's Bond Ratings | The following table summarizes Moody's and/or Standard & Poor's bond ratings for our portfolio of held-to-maturity securities issued by States and political subdivisions and other securities as of December 31, 2020: States and Political Subdivisions Not Guaranteed or Pre-Refunded Guaranteed by the Texas PSF Pre-Refunded Total Other Aaa/AAA $ 115,016 $ 659,999 $ 470,745 $ 1,245,760 $ — Aa/AA 107,065 — — 107,065 — A 62,724 — — 62,724 — Not rated — — — — 1,500 Total $ 284,805 $ 659,999 $ 470,745 $ 1,415,549 $ 1,500 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | The following table details activity in the allowance for credit losses on held-to-maturity securities during 2020. Beginning balance $ — Impact of adopting ASC 326 215 Credit loss expense (benefit) (55) Ending balance $ 160 |
Debt Securities, Available-for-sale | A summary of the amortized cost, fair value and allowance for credit losses related to securities available for sale as of December 31, 2020 and 2019 is presented below. Amortized Gross Gross Allowance Estimated December 31, 2020 U.S. Treasury $ 1,084,542 $ 35,091 $ — $ — $ 1,119,633 Residential mortgage-backed securities 1,916,581 71,102 4 — 1,987,679 States and political subdivisions 6,683,927 603,975 — — 7,287,902 Other 42,351 — — — 42,351 Total $ 9,727,401 $ 710,168 $ 4 $ — $ 10,437,565 December 31, 2019 U.S. Treasury $ 1,941,283 $ 18,934 $ 12,084 $ — $ 1,948,133 Residential mortgage-backed securities 2,176,275 32,608 1,289 — 2,207,594 States and political subdivisions 6,717,344 353,857 204 — 7,070,997 Other 42,867 — — — 42,867 Total $ 10,877,769 $ 405,399 $ 13,577 $ — $ 11,269,591 |
Year End Securities with Unrealized Losses, Segregated by Length of Impairment | The table below summarizes, as of December 31, 2020, securities available for sale in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by type of security and length of time in a continuous unrealized loss position. Less than 12 Months More than 12 Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized Residential mortgage-backed securities $ 1,711 $ 3 $ 121 $ 1 $ 1,832 $ 4 Total $ 1,711 $ 3 $ 121 $ 1 $ 1,832 $ 4 |
Amortized Cost and Estimated Fair Value of Securities, Excluding Trading Securities, Presented by Contractual Maturity | The following table summarizes the maturity distribution schedule of securities held to maturity and securities available for sale as of December 31, 2020. Mortgage-backed securities are included in maturity categories based on their stated maturity date. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Other securities classified as available for sale include stock in the Federal Reserve Bank and the Federal Home Loan Bank, which have no maturity date. These securities have been included in the total column only. Within 1 Year 1 - 5 Years 5 - 10 Years After 10 Years Total Held To Maturity Amortized Cost Residential mortgage-backed securities $ 22 $ 165 $ 516,118 $ 12,479 $ 528,784 States and political subdivisions 155,941 463,302 207,076 589,230 1,415,549 Other — 1,500 — — 1,500 Total $ 155,963 $ 464,967 $ 723,194 $ 601,709 $ 1,945,833 Estimated Fair Value Residential mortgage-backed securities $ 22 $ 167 $ 556,610 $ 13,727 $ 570,526 States and political subdivisions 156,689 480,530 212,937 630,714 1,480,870 Other — 1,500 — — 1,500 Total $ 156,711 $ 482,197 $ 769,547 $ 644,441 $ 2,052,896 Available For Sale Amortized Cost U. S. Treasury $ 798,742 $ 285,800 $ — $ — $ 1,084,542 Residential mortgage-backed securities 11,833 25,336 22,583 1,856,829 1,916,581 States and political subdivisions 199,697 1,323,635 638,720 4,521,875 6,683,927 Other — — — — 42,351 Total $ 1,010,272 $ 1,634,771 $ 661,303 $ 6,378,704 $ 9,727,401 Estimated Fair Value U. S. Treasury $ 811,778 $ 307,855 $ — $ — $ 1,119,633 Residential mortgage-backed securities 12,278 26,724 23,116 1,925,561 1,987,679 States and political subdivisions 201,166 1,442,871 694,760 4,949,105 7,287,902 Other — — — — 42,351 Total $ 1,025,222 $ 1,777,450 $ 717,876 $ 6,874,666 $ 10,437,565 |
Sales of Securities Available for Sale | Sales of securities available for sale were as follows: 2020 2019 2018 Proceeds from sales $ 1,162,352 $ 18,660,147 $ 16,806,062 Gross realized gains 108,989 930 3 Gross realized losses — (637) (159) Tax benefit (expense) related to securities gains/losses (22,888) (62) 33 |
Premium Amortization and Discount Accretion Included in Income on Securities | Premium amortization and discount accretion included in interest income on securities was as follows: 2020 2019 2018 Premium amortization $ (126,210) $ (120,785) $ (108,483) Discount accretion 2,425 5,227 7,955 Net (premium amortization) discount accretion $ (123,785) $ (115,558) $ (100,528) |
Year End Trading Account Securities, at Estimated Fair Value | Year-end trading account securities, at estimated fair value, were as follows: 2020 2019 U.S. Treasury $ 23,996 $ 24,298 States and political subdivisions 460 — Total $ 24,456 $ 24,298 |
Net Gains and Losses on Trading Account Securities | Net gains and losses on trading account securities were as follows: 2020 2019 2018 Net gain on sales transactions $ 1,102 $ 2,173 $ 1,816 Net mark-to-market gains (losses) 85 (176) 105 Net gain on trading account securities $ 1,187 $ 1,997 $ 1,921 |
Loans (Tables)
Loans (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Receivables [Abstract] | |
Loans | Year-end loans, including leases net of unearned discounts, consisted of the following: 2020 2019 Commercial and industrial $ 4,955,341 $ 5,187,466 Energy: Production 976,473 1,348,900 Service 116,825 192,996 Other 141,900 110,986 Total energy 1,235,198 1,652,882 Paycheck Protection Program 2,433,849 — Commercial real estate: Commercial mortgages 5,478,806 4,594,113 Construction 1,223,814 1,312,659 Land 317,847 289,467 Total commercial real estate 7,020,467 6,196,239 Consumer real estate: Home equity loans 329,390 375,596 Home equity lines of credit 452,854 354,671 Other 548,530 464,146 Total consumer real estate 1,330,774 1,194,413 Total real estate 8,351,241 7,390,652 Consumer and other 505,680 519,332 Total loans $ 17,481,309 $ 14,750,332 |
Activities in Related Party Loans | Activity in related party loans during 2020 is presented in the following table. Other changes were primarily related to changes in related-party status. Balance outstanding at December 31, 2019 $ 298,528 Principal additions 267,951 Principal reductions (212,157) Other changes (1,217) Balance outstanding at December 31, 2020 $ 353,105 |
Non-Accrual Loans, Segregated by Class of Loans | Year-end non-accrual loans, segregated by class of loans, were as follows: December 31, 2020 December 31, 2019 Total Non-Accrual Non-Accrual with No Credit Loss Allowance Total Non-Accrual Non-Accrual with No Credit Loss Allowance Commercial and industrial $ 19,849 $ 4,479 $ 26,038 $ 13,266 Energy 23,168 639 65,761 3,281 Paycheck Protection Program — — — — Commercial real estate: Buildings, land and other 15,737 14,116 8,912 6,558 Construction 1,684 1,684 665 665 Consumer real estate 993 993 922 922 Consumer and other 18 — 5 — Total $ 61,449 $ 21,911 $ 102,303 $ 24,692 |
Financing Receivable, Non-Accrual Loans, Segregated by Class of Loan and Year of Origination | The following table presents non-accrual loans as of December 31, 2020 by class and year of origination. 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Commercial and industrial $ 9,479 $ 3,351 $ 1,846 $ 1,489 $ 105 $ 29 $ 839 $ 2,711 $ 19,849 Energy 2,421 6,772 2,144 — — 359 11,193 279 23,168 Paycheck Protection Program — — — — — — — — — Commercial real estate: Buildings, land and other 2,914 5,031 999 2,019 1,933 2,736 105 — 15,737 Construction 1,684 — — — — — — — 1,684 Consumer real estate — — — 211 — 408 259 115 993 Consumer and other — — — — — — 18 — 18 Total $ 16,498 $ 15,154 $ 4,989 $ 3,719 $ 2,038 $ 3,532 $ 12,414 $ 3,105 $ 61,449 |
Age Analysis of Past Due Loans, Segregated by Class of Loans | An age analysis of past due loans (including both accruing and non-accruing loans), segregated by class of loans, as of December 31, 2020 was as follows: Loans Loans Total Past Current Total Loans Accruing Commercial and industrial $ 45,416 $ 9,616 $ 55,032 $ 4,900,309 $ 4,955,341 $ 5,615 Energy 14,833 11,237 26,070 1,209,128 1,235,198 3,696 Paycheck Protection Program — — — 2,433,849 2,433,849 — Commercial real estate: Buildings, land and other 22,130 6,304 28,434 5,768,219 5,796,653 1,275 Construction 856 — 856 1,222,958 1,223,814 — Consumer real estate 8,090 3,047 11,137 1,319,637 1,330,774 2,469 Consumer and other 5,537 1,251 6,788 498,892 505,680 1,233 Total $ 96,862 $ 31,455 $ 128,317 $ 17,352,992 $ 17,481,309 $ 14,288 |
Impaired Loans | mpaired loans as of December 31, 2019 and the average recorded investment in impaired loans during 2019 and 2018 are set forth in the following table. No interest income was recognized on impaired loans subsequent to their classification as impaired. Unpaid Recorded Recorded Total Related Average Average 2019 Commercial and industrial $ 30,909 $ 11,588 $ 12,772 $ 24,360 $ 7,849 $ 14,913 $ 18,246 Energy 87,103 2,764 62,480 65,244 20,246 53,563 75,453 Commercial real estate: Buildings, land and other 9,252 6,255 2,354 8,609 383 13,690 12,799 Construction 697 665 — 665 — 354 — Consumer real estate 570 570 — 570 — 547 704 Consumer and other 5 — 5 5 5 1,285 925 Total $ 128,536 $ 21,842 $ 77,611 $ 99,453 $ 28,483 $ 84,352 $ 108,127 |
Troubled Debt Restructurings | Troubled debt restructurings that occurred during 2020, 2019 and 2018 are set forth in the following table. 2020 2019 2018 Balance at Balance at Balance at Balance at Balance at Balance at Commercial and industrial $ 3,661 $ 192 $ 3,845 $ 2,161 $ 2,203 $ — Energy 2,432 2,421 — — 13,708 — Commercial real estate: Buildings, land and other 9,310 4,922 9,457 9,393 — — Construction 1,017 1,017 — — — — Consumer real estate — — 124 120 — — Consumer and other 1,104 — — — — — $ 17,524 $ 8,552 $ 13,426 $ 11,674 $ 15,911 $ — |
Restructured Loans Past Due in Excess of 90 Days on Financing Receivables | Additional information related to restructured loans was as follows: 2020 2019 2018 Restructured loans past due in excess of 90 days at period-end: Number of loans 1 4 — Dollar amount of loans $ 2,008 $ 3,340 $ — Restructured loans on non-accrual status at period end 8,552 5,576 — Charge-offs of restructured loans: Recognized in connection with restructuring 337 — — Recognized on previously restructured loans 3,894 1,500 7,650 Proceeds from sale of restructured loans — — 15,750 |
Weighted Average Risk Grades for All Commercial Loans by Class and Year of Origination | The following tables present weighted-average risk grades for all commercial loans, by class and year of origination/renewal as of December 31, 2020. Paycheck Protection Program (“PPP”) loans are excluded as such loans are fully guaranteed by the Small Business Administration (“SBA”). 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Commercial and industrial Risk grades 1-8 $ 1,300,844 $ 552,885 $ 290,088 $ 226,232 $ 107,063 $ 113,458 $ 1,852,341 $ 63,210 $ 4,506,121 Risk grade 9 50,785 37,865 33,961 20,851 12,348 5,510 85,756 9,122 256,198 Risk grade 10 31,333 7,361 11,379 6,749 710 113 65,180 3,152 125,977 Risk grade 11 4,700 7,002 6,551 3,416 1,426 140 15,005 8,956 47,196 Risk grade 12 6,899 2,399 1,195 1,005 105 29 480 2,416 14,528 Risk grade 13 2,580 952 651 484 — — 359 295 5,321 $ 1,397,141 $ 608,464 $ 343,825 $ 258,737 $ 121,652 $ 119,250 $ 2,019,121 $ 87,151 $ 4,955,341 W/A risk grade 6.19 6.88 7.22 6.39 6.32 5.84 6.38 7.51 6.45 Energy Risk grades 1-8 $ 403,156 $ 18,911 $ 9,759 $ 8,083 $ 1,415 $ 4,326 $ 494,946 $ 27,548 $ 968,144 Risk grade 9 105,772 2,272 1,743 — — — 18,194 5,566 133,547 Risk grade 10 703 4,049 1,339 — 759 — 37,637 1,940 46,427 Risk grade 11 12,218 16,849 1,325 — — 661 30,124 2,735 63,912 Risk grade 12 1,101 4,580 654 — — 359 6,768 279 13,741 Risk grade 13 1,320 2,192 1,490 — — — 4,425 — 9,427 $ 524,270 $ 48,853 $ 16,310 $ 8,083 $ 2,174 $ 5,346 $ 592,094 $ 38,068 $ 1,235,198 W/A risk grade 6.86 9.57 8.68 7.40 7.85 8.06 6.45 8.20 6.85 Commercial real estate: Buildings, land, other Risk grades 1-8 $ 1,544,558 $ 947,102 $ 749,879 $ 605,152 $ 432,941 $ 661,301 $ 56,600 $ 50,340 $ 5,047,873 Risk grade 9 45,527 81,224 75,893 45,485 26,745 37,728 10,521 2,104 325,227 Risk grade 10 14,183 36,414 45,014 71,814 25,343 60,225 200 5,261 258,454 Risk grade 11 22,633 16,302 11,916 39,727 8,655 42,904 6,977 248 149,362 Risk grade 12 2,714 5,031 999 2,019 1,683 2,736 42 — 15,224 Risk grade 13 200 — — — 250 — 63 — 513 $ 1,629,815 $ 1,086,073 $ 883,701 $ 764,197 $ 495,617 $ 804,894 $ 74,403 $ 57,953 $ 5,796,653 W/A risk grade 7.13 7.36 7.54 7.55 7.54 7.20 7.54 7.12 7.34 Construction Risk grades 1-8 $ 374,661 $ 436,077 $ 168,517 $ 67 $ 1,144 $ 1,758 $ 127,801 $ — $ 1,110,025 Risk grade 9 37,430 16,567 — 2,848 — — 14,311 1,131 72,287 Risk grade 10 5,846 — 27,653 — — — 5,463 — 38,962 Risk grade 11 856 — — — — — — — 856 Risk grade 12 1,684 — — — — — — — 1,684 Risk grade 13 — — — — — — — — — $ 420,477 $ 452,644 $ 196,170 $ 2,915 $ 1,144 $ 1,758 $ 147,575 $ 1,131 $ 1,223,814 W/A risk grade 6.82 7.18 8.08 8.95 7.30 6.44 7.29 9.00 7.22 Total commercial real estate $ 2,050,292 $ 1,538,717 $ 1,079,871 $ 767,112 $ 496,761 $ 806,652 $ 221,978 $ 59,084 $ 7,020,467 W/A risk grade 7.06 7.31 7.64 7.56 7.54 7.20 7.37 7.15 7.32 |
Weighted Average Risk Grades for All Commercial Loans by Class | The following tables present weighted average risk grades for all commercial loans by class as of December 31, 2019. Commercial and Industrial Energy Commercial Real Estate - Buildings, Land and Other Commercial Real Estate - Construction Total Commercial Real Estate W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans Risk grades 1-8 6.17 $ 4,788,857 5.90 $ 1,488,301 6.78 $ 4,523,271 7.25 $ 1,274,098 6.88 $ 5,797,369 Risk grade 9 9.00 247,212 9.00 32,163 9.00 163,714 9.00 21,509 9.00 185,223 Risk grade 10 10.00 71,472 10.00 51,898 10.00 103,626 10.00 15,243 10.00 118,869 Risk grade 11 11.00 53,887 11.00 14,760 11.00 84,057 11.00 1,144 11.00 85,201 Risk grade 12 12.00 18,189 12.00 45,514 12.00 8,529 12.00 665 12.00 9,194 Risk grade 13 13.00 7,849 13.00 20,246 13.00 383 13.00 — 13.00 383 Total 6.44 $ 5,187,466 6.39 $ 1,652,882 7.01 $ 4,883,580 7.31 $ 1,312,659 7.07 $ 6,196,239 |
Age analysis of Past Due Consumer Loans by Class and Year of Origination | Information about the payment status of consumer loans, segregated by portfolio segment and year of origination, as of December 31, 2020 was as follows: 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Consumer real estate: Past due 30-89 days $ 225 $ 1,038 $ 1,556 $ 553 $ 628 $ 2,907 $ 652 $ 531 $ 8,090 Past due 90 or more days 15 139 109 706 25 1,287 615 151 3,047 Total past due 240 1,177 1,665 1,259 653 4,194 1,267 682 11,137 Current loans 336,441 166,323 94,374 80,625 66,241 124,590 434,939 16,104 1,319,637 Total $ 336,681 $ 167,500 $ 96,039 $ 81,884 $ 66,894 $ 128,784 $ 436,206 $ 16,786 $ 1,330,774 Consumer and other: Past due 30-89 days $ 1,750 $ 300 $ 453 $ 52 $ 17 $ — $ 2,238 $ 727 $ 5,537 Past due 90 or more days 71 10 118 — — — 1,031 21 1,251 Total past due 1,821 310 571 52 17 — 3,269 748 6,788 Current loans 45,286 27,813 5,397 2,799 1,705 572 386,791 28,529 498,892 Total $ 47,107 $ 28,123 $ 5,968 $ 2,851 $ 1,722 $ 572 $ 390,060 $ 29,277 $ 505,680 |
Financing Receivable Revolving Loans Converted to Term | Revolving loans that converted to term during 2020 were as follows: Commercial and industrial $ 47,562 Energy 33,150 Commercial real estate: Buildings, land and other 10,505 Construction 1,131 Consumer real estate 2,264 Consumer and other 16,395 Total $ 111,007 |
Financing Receivable, Allowance for Credit Loss By Loan Class Calculated in Accordance With CECL Methodology | The following table presents details of the allowance for credit losses on loans segregated by loan portfolio segment as of December 31, 2020, calculated in accordance with the CECL methodology described above. No allowance for credit losses has been recognized for PPP loans as such loans are fully guaranteed by the SBA. Commercial Energy Commercial Consumer Consumer Total Modeled expected credit losses $ 65,645 $ 8,910 $ 125,126 $ 7,926 $ 6,945 $ 214,552 Q-Factor and other qualitative adjustments 2,877 21,216 9,253 — — 33,346 Specific allocations 5,321 9,427 513 — 18 15,279 Total $ 73,843 $ 39,553 $ 134,892 $ 7,926 $ 6,963 $ 263,177 |
Allowance for Credit Losses By Loan Class in Accordance With Methodology Used Prior to CECL | The following table presents details of the allowance for credit losses on loans segregated by loan portfolio segment as of December 31, 2019, calculated in accordance with our prior incurred loss methodology described in our 2019 Form 10-K. Commercial Energy Commercial Consumer Consumer Total Historical valuation allowances $ 29,015 $ 7,873 $ 21,947 $ 2,690 $ 7,562 $ 69,087 Specific valuation allowances 7,849 20,246 383 — 5 28,483 General valuation allowances 9,840 5,196 4,201 904 (409) 19,732 Macroeconomic valuation allowances 4,889 4,067 4,506 519 884 14,865 Total $ 51,593 $ 37,382 $ 31,037 $ 4,113 $ 8,042 $ 132,167 |
Activity in Allowance for Loan Losses by Portfolio Segment | The following table details activity in the allowance for credit losses on loans by portfolio segment for 2020, 2019 and 2018. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. No allowance for credit losses has been recognized for PPP loans as such loans are fully guaranteed by the SBA. Commercial Energy Commercial Consumer Consumer Total 2020 Beginning balance $ 51,593 $ 37,382 $ 31,037 $ 4,113 $ 8,042 $ 132,167 Impacting of adopting ASC 326 21,263 (10,453) (13,519) 2,392 (2,248) (2,565) Credit loss expense 15,156 85,889 124,427 1,906 9,632 237,010 Charge-offs (18,908) (76,107) (7,499) (2,186) (17,830) (122,530) Recoveries 4,739 2,842 446 1,701 9,367 19,095 Net charge-offs (14,169) (73,265) (7,053) (485) (8,463) (103,435) Ending balance $ 73,843 $ 39,553 $ 134,892 $ 7,926 $ 6,963 $ 263,177 2019 Beginning balance $ 48,580 $ 29,052 $ 38,777 $ 6,103 $ 9,620 $ 132,132 Credit loss expense 13,144 14,388 (6,934) 467 12,694 33,759 Charge-offs (14,117) (7,500) (1,025) (3,665) (24,725) (51,032) Recoveries 3,986 1,442 219 1,208 10,453 17,308 Net charge-offs (10,131) (6,058) (806) (2,457) (14,272) (33,724) Ending balance $ 51,593 $ 37,382 $ 31,037 $ 4,113 $ 8,042 $ 132,167 2018 Beginning balance $ 59,614 $ 51,528 $ 30,948 $ 5,657 $ 7,617 $ 155,364 Credit loss expense 11,354 (9,355) 8,079 1,984 9,551 21,613 Charge-offs (26,076) (13,940) (619) (2,143) (17,197) (59,975) Recoveries 3,688 819 369 605 9,649 15,130 Net charge-offs (22,388) (13,121) (250) (1,538) (7,548) (44,845) Ending balance $ 48,580 $ 29,052 $ 38,777 $ 6,103 $ 9,620 $ 132,132 |
Investment in Loans Related to the Allowance for Loan Losses by Portfolio Segment Disaggregated Based on Impairment Methodology | The following table presents loans that were evaluated for expected credit losses on an individual basis and the related specific allocations, by loan portfolio segment as of December 31, 2020 and December 31, 2019. December 31, 2020 December 31, 2019 Loan Specific Allocations Loan Specific Allocations Commercial and industrial $ 21,287 $ 5,321 $ 24,360 $ 7,849 Energy 22,888 9,427 65,244 20,246 Paycheck Protection Program — — — — Commercial real estate: Buildings, land and other 34,057 513 8,609 383 Construction 1,684 — 665 — Consumer real estate 561 — 570 — Consumer and other 18 18 5 5 Total $ 80,495 $ 15,279 $ 99,453 $ 28,483 |
Premises and Equipment (Tables)
Premises and Equipment (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Property, Plant and Equipment [Abstract] | |
Premises and Equipment | Year-end premises and equipment were as follows: 2020 2019 Land $ 128,739 $ 112,818 Buildings 458,693 441,404 Technology, furniture and equipment 243,395 226,925 Leasehold improvements 183,827 156,144 Construction and projects in progress 41,202 44,251 Lease right-of-use assets 292,087 297,736 1,347,943 1,279,278 Less accumulated depreciation and amortization (302,365) (267,331) Total premises and equipment, net $ 1,045,578 $ 1,011,947 |
Lease Commitments, Components of Lease Expense | The components of total lease expense in 2020 and 2019 were as follows: 2020 2019 Amortization of lease right-of-use assets $ 32,772 $ 27,626 Short-term lease expense 1,799 4,592 Non-lease components (including taxes, insurance, common maintenance, etc.) 11,396 9,896 Total $ 45,967 $ 42,114 |
Future Minimum Lease Payments Due Under Non-Cancelable Operating Leases | The following table reconciles future undiscounted lease payments due under non-cancelable operating leases (those amounts subject to recognition) to the aggregate operating lessee lease liability as of December 31, 2020: Future lease payments 2021 $ 32,357 2022 30,741 2023 28,927 2024 27,487 2025 26,240 Thereafter 267,707 Total undiscounted operating lease liability 413,459 Imputed interest 90,415 Total operating lease liability included in the accompanying balance sheet $ 323,044 Weighted-average lease term in years 15.57 Weighted-average discount rate 3.10% |
Goodwill and Other Intangible_2
Goodwill and Other Intangible Assets (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Goodwill and Intangible Assets Disclosure [Abstract] | |
Schedule of Goodwill | Goodwill . Year-end goodwill was as follows: 2020 2019 Goodwill $ 654,952 $ 654,952 |
Schedule of Other Intangible Assets | Other Intangible Assets. Year-end other intangible assets were as follows: Gross Accumulated Net 2020 Core deposits $ 9,300 $ (8,004) $ 1,296 Customer relationships 2,886 (2,619) 267 $ 12,186 $ (10,623) $ 1,563 2019 Core deposits $ 9,300 $ (7,257) $ 2,043 Customer relationships 3,388 (2,950) 438 $ 12,688 $ (10,207) $ 2,481 |
Estimated Aggregate Future Amortization Expense for Intangible Assets | The estimated aggregate future amortization expense for intangible assets remaining as of December 31, 2020 is as follows: 2021 $ 697 2022 481 2023 282 2024 87 2025 11 Thereafter 5 $ 1,563 |
Deposits (Tables)
Deposits (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Deposits [Abstract] | |
Deposit Liabilities, Type | Year-end deposits were as follows: 2020 2019 Non-interest-bearing demand deposits: Commercial and individual $ 13,914,754 $ 10,212,265 Correspondent banks 242,225 246,181 Public funds 960,072 415,183 Total non-interest-bearing demand deposits 15,117,051 10,873,629 Interest-bearing deposits: Private accounts: Savings and interest checking 9,132,789 7,147,327 Money market accounts 8,977,585 7,888,433 Time accounts of $100,000 or more 804,232 736,481 Time accounts under $100,000 331,343 347,418 Total private accounts 19,245,949 16,119,659 Public funds: Savings and interest checking 597,503 548,399 Money market accounts 50,070 73,180 Time accounts of $100,000 or more 5,163 24,672 Time accounts under $100,000 25 25 Total public funds 652,761 646,276 Total interest-bearing deposits 19,898,710 16,765,935 Total deposits $ 35,015,761 $ 27,639,564 |
Additional Information About Corporation's Deposits | The following table presents additional information about our year-end deposits: 2020 2019 Deposits from the Certificate of Deposit Account Registry Service (CDARS) $ 372 $ 361 Deposits from foreign sources (primarily Mexico) 884,169 805,828 Deposits not covered by deposit insurance 18,694,320 13,115,796 Deposits from certain directors, executive officers and their affiliates 210,389 197,919 |
Scheduled Maturities of Time Deposits | Scheduled maturities of time deposits, including both private and public funds, at December 31, 2020 were as follows: 2021 $ 979,825 2022 160,938 $ 1,140,763 |
Time Deposit Maturities | Scheduled maturities of time deposits in amounts of $100,000 or more, including both private and public funds, at December 31, 2020, were as follows: Due within 3 months or less $ 327,284 Due after 3 months and within 6 months 178,403 Due after 6 months and within 12 months 195,766 Due after 12 months 107,942 $ 809,395 |
Off-Balance-Sheet Arrangement_2
Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Commitments and Contingencies Disclosure [Abstract] | |
Financial Instruments With Off-Balance-Sheet Risk | Year-end financial instruments with off-balance-sheet risk were as follows: 2020 2019 Commitments to extend credit $ 9,814,475 $ 9,306,043 Standby letters of credit 241,345 260,587 Deferred standby letter of credit fees 1,723 1,276 |
Commitments, Off-Balance-Sheet, Allowance for Credit Losses | The following table details activity in the allowance for credit losses on off-balance-sheet credit exposures. 2020 2019 2018 Beginning balance $ 500 $ 500 $ 428 Impact of adopting ASC 326 39,377 — — Credit loss expense 4,275 — 72 Ending balance $ 44,152 $ 500 $ 500 |
Capital and Regulatory Matters
Capital and Regulatory Matters (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] | |
Actual and Required Capital Ratios | The following table presents actual and required capital ratios as of December 31, 2020 and December 31, 2019 for Cullen/Frost and Frost Bank under the Basel III Capital Rules. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Actual Minimum Capital Required - Basel III Fully Phased-In Required to be Capital Ratio Capital Ratio Capital Ratio 2020 Common Equity Tier 1 to Risk-Weighted Assets Cullen/Frost $ 3,058,447 12.86 % $ 1,664,867 7.00 % $ 1,545,948 6.50 % Frost Bank 3,030,093 12.77 1,661,620 7.00 1,542,933 6.50 Tier 1 Capital to Risk-Weighted Assets Cullen/Frost 3,203,899 13.47 2,021,624 8.50 1,902,705 8.00 Frost Bank 3,030,093 12.77 2,017,682 8.50 1,898,995 8.00 Total Capital to Risk-Weighted Assets Cullen/Frost 3,672,912 15.44 2,497,300 10.50 2,378,381 10.00 Frost Bank 3,266,106 13.76 2,492,430 10.50 2,373,743 10.00 Leverage Ratio Cullen/Frost 3,203,899 8.07 1,589,004 4.00 1,986,255 5.00 Frost Bank 3,030,093 7.63 1,588,200 4.00 1,985,250 5.00 2019 Common Equity Tier 1 to Risk-Weighted Assets Cullen/Frost $ 2,857,250 12.36 % $ 1,617,886 7.00 % $ 1,502,323 6.50 % Frost Bank 2,958,326 12.82 1,615,206 7.00 1,499,834 6.50 Tier 1 Capital to Risk-Weighted Assets Cullen/Frost 3,001,736 12.99 1,964,576 8.50 1,849,013 8.00 Frost Bank 2,958,326 12.82 1,961,322 8.50 1,845,950 8.00 Total Capital to Risk-Weighted Assets Cullen/Frost 3,367,403 14.57 2,426,829 10.50 2,311,266 10.00 Frost Bank 3,090,993 13.40 2,422,809 10.50 2,307,438 10.00 Leverage Ratio Cullen/Frost 3,001,736 9.28 1,293,188 4.00 1,616,485 5.00 Frost Bank 2,958,326 9.15 1,292,743 4.00 1,615,929 5.00 |
Earnings Per Common Share (Tabl
Earnings Per Common Share (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Earnings Per Share [Abstract] | |
Basic and Diluted Earnings Per Common Share | The following table presents a reconciliation of net income available to common shareholders, net earnings allocated to common stock and the number of shares used in the calculation of basic and diluted earnings per common share. 2020 2019 2018 Net Income $ 331,151 $ 443,599 $ 454,918 Less: Preferred stock dividends 2,016 8,063 8,063 Redemption of preferred stock 5,514 — — Net income available to common shareholders 323,621 435,536 446,855 Less: Earnings allocated to participating securities 3,136 3,687 3,169 Net earnings allocated to common stock $ 320,485 $ 431,849 $ 443,686 Distributed earnings allocated to common stock $ 178,863 $ 175,540 $ 164,268 Undistributed earnings allocated to common stock 141,622 256,309 279,418 Net earnings allocated to common stock $ 320,485 $ 431,849 $ 443,686 Weighted-average shares outstanding for basic earnings per common share 62,727,053 62,741,769 63,704,508 Dilutive effect of stock compensation 276,784 700,101 982,208 Weighted-average shares outstanding for diluted earnings per common share 63,003,837 63,441,870 64,686,716 |
Employee Benefit Plans (Tables)
Employee Benefit Plans (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Retirement Benefits [Abstract] | |
Combined Activity in Corporations Defined Benefit Pension Plans | We use a December 31 measurement date for our defined benefit plans. Combined activity in our defined benefit pension plans was as follows: 2020 2019 2018 Change in plan assets: Fair value of plan assets at beginning of year $ 174,173 $ 152,820 $ 168,450 Actual return on plan assets 16,599 29,945 (7,739) Employer contributions 1,201 1,163 1,077 Benefits paid (9,885) (9,755) (8,968) Fair value of plan assets at end of year 182,088 174,173 152,820 Change in benefit obligation: Benefit obligation at beginning of year 186,641 167,107 182,607 Interest cost 5,010 6,472 5,898 Actuarial (gain) loss 15,827 22,817 (12,430) Benefits paid (9,885) (9,755) (8,968) Benefit obligation at end of year 197,593 186,641 167,107 Funded status of the plan at end of year and accrued benefit (liability) recognized $ (15,505) $ (12,468) $ (14,287) Accumulated benefit obligation at end of year $ 197,593 $ 186,641 $ 167,107 |
Disaggregated Information Related to Corporations Defined Benefit Pension Plans | Certain disaggregated information related to our defined benefit pension plans as of year-end was as follows: Retirement Plan Restoration Plan 2020 2019 2020 2019 Projected benefit obligation $ 180,986 $ 170,541 $ 16,607 $ 16,100 Accumulated benefit obligation 180,986 170,541 16,607 16,100 Fair value of plan assets 182,088 174,173 — — Funded status of the plan at end of year and accrued benefit (liability) recognized 1,102 3,632 (16,607) (16,100) |
Net Periodic Benefit Cost (Benefit) | The components of the combined net periodic cost (benefit) for our defined benefit pension plans are presented in the table below. 2020 2019 2018 Expected return on plan assets, net of expenses $ (12,289) $ (10,772) $ (11,916) Interest cost on projected benefit obligation 5,010 6,472 5,898 Net amortization and deferral 5,319 5,623 5,002 Net periodic expense (benefit) $ (1,960) $ 1,323 $ (1,016) |
Defined Benefit Pension Plans Recognized as Component of Other Comprehensive Income | Amounts related to our defined benefit pension plans recognized as a component of other comprehensive income were as follows: 2020 2019 2018 Net actuarial gain (loss) $ (6,199) $ 1,979 $ (2,223) Deferred tax (expense) benefit 1,302 (416) 466 Other comprehensive income (loss), net of tax $ (4,897) $ 1,563 $ (1,757) |
Defined Benefit Pension Plans Not Recognized as Component of Combined Net Period Benefit Cost | We expect to recognize approximately $6.1 million of the net actuarial loss reported in the following table as of December 31, 2020 as a component of net periodic benefit cost during 2021. 2020 2019 Net actuarial loss $ (64,343) $ (57,964) Deferred tax benefit 13,512 12,210 Amounts included in accumulated other comprehensive income/loss, net of tax (50,831) (45,934) |
Weighted-Average Assumptions Used to Determine Benefit Obligations | The weighted-average assumptions used to determine the benefit obligations as of the end of the years indicated and the net periodic benefit cost for the years indicated are presented in the table below. Because the plans were frozen, increases in compensation are not considered after 2001. 2020 2019 2018 Benefit obligations: Discount rate 2.43 % 3.20 % 4.36 % Net periodic benefit cost: Discount rate 3.20 % 4.36 % 3.68 % Expected return on plan assets 7.25 7.25 7.25 |
Fair Value of Plan Assets | The major categories of assets in our Retirement Plan as of year-end are presented in the following table. Assets are segregated by the level of the valuation inputs within the fair value hierarchy established by ASC Topic 820 “Fair Value Measurements and Disclosures,” utilized to measure fair value (see Note 17 - Fair Value Measurements). Our Restoration Plan is unfunded. 2020 2019 Level 1: Mutual funds $ 180,693 $ 172,773 Cash and cash equivalents 1,395 1,400 Total fair value of plan assets $ 182,088 $ 174,173 |
Expected Future Benefit Payments Related to Defined Benefit Plans | As of December 31, 2020, expected future benefit payments related to our defined benefit plans were as follows: 2021 $ 11,315 2022 11,507 2023 11,668 2024 11,800 2025 11,880 2026 through 2030 57,248 $ 115,418 |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] | A combined summary of activity in our active stock plans is presented in the table. Performance stock units outstanding are presented assuming attainment of the maximum payout rate as set forth by the performance criteria. The target award level for performance stock units granted in 2020, 2019 and 2018 was 48,409, 34,317 and 30,466, respectively. As of December 31, 2020, there were 887,189 shares remaining available for grant for future awards. Director Deferred Non-Vested Stock Performance Stock Units Outstanding Stock Options Number of Units Weighted- Number Weighted- Number of Units Weighted- Number Weighted- January 1, 2018 53,008 $ 64.87 312,656 $ 81.71 80,106 $ 79.91 2,917,142 $ 63.34 Granted 6,576 109.58 109,847 94.81 45,703 87.18 — — Exercised/vested (10,674) 63.68 (32,050) 78.92 — — (513,134) 61.68 Forfeited/expired — — (6,656) 87.60 — — (52,000) 70.42 December 31, 2018 48,910 71.14 383,797 85.59 125,809 82.55 2,352,008 63.55 Granted 7,592 102.70 127,091 93.46 51,479 85.74 — — Exercised/vested (1,132) 106.03 (53,990) 65.11 — — (359,892) 57.71 Forfeited/expired — — (16,251) 89.71 — — (11,250) 65.11 December 31, 2019 55,370 74.76 440,647 90.22 177,288 83.48 1,980,866 64.60 Granted 10,428 73.84 151,038 66.79 72,618 57.89 — — Exercised/vested (12,938) 71.09 (117,990) 76.07 (41,755) 69.70 (235,880) 53.23 Forfeited/expired — — (3,336) 91.07 (6,894) 81.33 (5,427) 75.74 December 31, 2020 52,860 75.47 470,359 86.24 201,257 77.18 1,739,559 66.11 |
Options Outstanding and Exercisable | Other information regarding options outstanding and exercisable as of December 31, 2020 is as follows: Options Outstanding Options Exercisable Range of Number Weighted- Weighted- Number Weighted- $ 45.01 to $ 50.00 204,480 $ 48.00 0.82 204,480 $ 48.00 50.01 to 55.00 282,204 54.56 1.81 282,204 54.56 65.01 to 70.00 509,221 65.11 4.67 509,221 65.11 70.01 to 75.00 275,654 71.39 2.80 275,654 71.39 75.01 to 80.00 468,000 78.95 3.74 468,000 78.95 Total 1,739,559 66.11 3.21 1,739,559 66.11 Total intrinsic value $ 36,745 $ 36,745 |
Shares Issued in Connection With Stock Compensation Awards | Shares issued in connection with stock compensation awards are issued from available treasury shares. If no treasury shares are available, new shares are issued from available authorized shares. Shares issued in connection with stock compensation awards along with other related information were as follows: 2020 2019 2018 Shares issued from available treasury stock 408,563 399,224 548,238 Proceeds from stock option exercises $ 12,557 $ 20,770 $ 31,647 Intrinsic value of stock options exercised 5,365 13,713 23,292 Fair value of stock awards/units vested 9,465 5,192 4,212 |
Stock-Based Compensation Expense | Stock-based compensation expense and the related income tax benefit is presented in the following table. The service period for performance stock units granted each year begins on January 1 of the following year. 2020 2019 2018 Stock options $ — $ 1,185 $ 3,652 Non-vested stock awards/stock units 10,240 9,339 6,983 Deferred stock-units 770 780 721 Performance stock units 2,908 4,642 2,587 Total $ 13,918 $ 15,946 $ 13,943 Income tax benefit $ 2,142 $ 2,359 $ 2,831 |
Unrecognized Stock-Based Compensation Expense | Unrecognized stock-based compensation expense and the weighted-average period over which the expense is expected to be recognized at December 31, 2020 is presented in the table below. Unrecognized stock-based compensation expense related to performance stock units is presented assuming attainment of the maximum payout rate as set forth by the performance criteria. Unrecognized Expense Weighted-Average Number of Years for Expense Recognition Non-vested stock awards/stock units $ 18,430 2.69 Performance stock units 7,034 1.99 Total $ 25,464 |
Other Non-Interest Income and_2
Other Non-Interest Income and Expense (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Other Income and Expenses [Abstract] | |
Other Non-Interest Income and Expense | 2020 2019 2018 Other non-interest income: Other $ 47,712 $ 43,563 $ 46,790 Total $ 47,712 $ 43,563 $ 46,790 Other non-interest expense: Professional services $ 37,253 $ 39,238 $ 35,941 Advertising, promotions and public relations 34,390 38,001 32,514 Travel/meals and entertainment 7,109 16,459 15,030 Other 87,558 86,967 89,981 Total $ 166,310 $ 180,665 $ 173,466 |
Income Taxes (Tables)
Income Taxes (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Income Tax Disclosure [Abstract] | |
Income Tax Expense | Income tax expense was as follows: 2020 2019 2018 Current income tax expense $ 36,002 $ 48,256 $ 840 Deferred income tax expense (benefit) (15,832) 7,614 52,923 Income tax expense, as reported $ 20,170 $ 55,870 $ 53,763 Effective tax rate 5.7 % 11.2 % 10.6 % |
Income Tax Computed by Applying U.S. Federal Statutory Income Tax Rate | A reconciliation between reported income tax expense and the amounts computed by applying the U.S. federal statutory income tax rate of 21% to income before income taxes is presented in the following table. 2020 2019 2018 Income tax expense computed at the statutory rate $ 73,777 $ 104,888 $ 106,823 Effect of tax-exempt interest (51,624) (49,166) (49,700) Tax benefit on dividends paid in our 401k plan (1,851) (1,743) (1,551) Bank owned life insurance income (783) (774) (710) Non-deductible compensation 1,123 1,708 210 Non-deductible FDIC premiums 1,790 1,267 1,771 Non-deductible meals and entertainment 786 1,299 1,193 Net tax benefit from stock-based compensation (852) (2,447) (3,865) Asset contribution to a charitable trust (2,556) — — Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate — — (231) Other 360 838 (177) Income tax expense, as reported $ 20,170 $ 55,870 $ 53,763 |
Schedule of Deferred Tax Assets and Liabilities | Year-end deferred taxes are presented in the table below. Deferred taxes are based on the U.S. statutory federal income tax rate of 21%. 2020 2019 Deferred tax assets: Lease liabilities under operating leases $ 67,839 $ 67,975 Allowance for credit losses 64,573 27,860 Net actuarial loss on defined benefit post-retirement benefit plans 13,512 12,210 Stock-based compensation 10,033 11,211 Bonus accrual 3,961 5,055 Deferred loan and lease origination fees 10,252 2,254 Other 3,834 2,058 Total gross deferred tax assets 174,004 128,623 Deferred tax liabilities: Net unrealized gain on securities available for sale and transferred securities (149,870) (83,281) Right-of-use assets under operating leases (61,963) (63,463) Premises and equipment (49,602) (29,730) Intangible assets (14,596) (12,642) Defined benefit post-retirement benefit plans (10,081) (9,419) Partnership interests (2,913) (2,894) Leases (1,090) (1,572) Other (1,387) (1,440) Total gross deferred tax liabilities (291,502) (204,441) Net deferred tax asset (liability) $ (117,498) $ (75,818) |
Other Comprehensive Income (L_2
Other Comprehensive Income (Loss) (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Equity [Abstract] | |
Component of Other Comprehensive Income (Loss) | The tax effects allocated to each component of other comprehensive income (loss) were as follows: Before Tax Tax Expense, Net of Tax 2020 Securities available for sale and transferred securities: Change in net unrealized gain/loss during the period $ 427,331 $ 89,741 $ 337,590 Change in net unrealized gain on securities transferred to held to maturity (1,256) (264) (992) Reclassification adjustment for net (gains) losses included in net income (108,989) (22,888) (86,101) Total securities available for sale and transferred securities 317,086 66,589 250,497 Defined-benefit post-retirement benefit plans: Change in the net actuarial gain/loss (11,518) (2,419) (9,099) Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) 5,319 1,117 4,202 Total defined-benefit post-retirement benefit plans (6,199) (1,302) (4,897) Total other comprehensive income (loss) $ 310,887 $ 65,287 $ 245,600 2019 Securities available for sale and transferred securities: Change in net unrealized gain/loss during the period $ 418,556 $ 87,897 $ 330,659 Change in net unrealized gain on securities transferred to held to maturity (1,292) (271) (1,021) Reclassification adjustment for net (gains) losses included in net income (293) (62) (231) Total securities available for sale and transferred securities 416,971 87,564 329,407 Defined-benefit post-retirement benefit plans: Change in the net actuarial gain/loss (3,644) (765) (2,879) Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) 5,623 1,181 4,442 Total defined-benefit post-retirement benefit plans 1,979 416 1,563 Total other comprehensive income (loss) $ 418,950 $ 87,980 $ 330,970 2018 Securities available for sale and transferred securities: Change in net unrealized gain/loss during the period $ (182,340) $ (38,292) $ (144,048) Change in net unrealized gain on securities transferred to held to maturity (8,818) (1,853) (6,965) Reclassification adjustment for net (gains) losses included in net income 156 33 123 Total securities available for sale and transferred securities (191,002) (40,112) (150,890) Defined-benefit post-retirement benefit plans: Change in the net actuarial gain/loss (7,225) (1,517) (5,708) Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) 5,002 1,051 3,951 Total defined-benefit post-retirement benefit plans (2,223) (466) (1,757) Total other comprehensive income (loss) $ (193,225) $ (40,578) $ (152,647) |
Schedule of Accumulated Other Comprehensive Income, Net of Tax | Activity in accumulated other comprehensive income, net of tax, was as follows: Securities Defined Accumulated Balance January 1, 2020 $ 313,304 $ (45,934) $ 267,370 Other comprehensive income (loss) before reclassification 336,598 (9,099) 327,499 Reclassification of amounts included in net income (86,101) 4,202 (81,899) Net other comprehensive income (loss) during period 250,497 (4,897) 245,600 Balance December 31, 2020 $ 563,801 $ (50,831) $ 512,970 Balance January 1, 2019 $ (16,103) $ (47,497) $ (63,600) Other comprehensive income (loss) before reclassification 329,638 (2,879) 326,759 Reclassification of amounts included in net income (231) 4,442 4,211 Net other comprehensive income (loss) during period 329,407 1,563 330,970 Balance December 31, 2019 $ 313,304 $ (45,934) $ 267,370 Balance January 1, 2018 $ 117,230 $ (37,718) $ 79,512 Other comprehensive income (loss) before reclassification (151,013) (5,708) (156,721) Reclassification of amounts included in net income 123 3,951 4,074 Net other comprehensive income (loss) during period (150,890) (1,757) (152,647) Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act to retained earnings 17,557 (8,022) 9,535 Balance December 31, 2018 $ (16,103) $ (47,497) $ (63,600) |
Derivative Financial Instrume_2
Derivative Financial Instruments (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
Schedule of Notional Amounts and Estimated Fair Values of Interest Rate Derivative Contracts Outstanding | The notional amounts and estimated fair values of interest rate derivative contracts outstanding at December 31, 2020 and 2019 are presented in the following table. The fair values of interest rate derivative contracts are estimated utilizing internal valuation models with observable market data inputs, or as determined by the Chicago Mercantile Exchange (“CME”) for centrally cleared derivative contracts. CME rules legally characterize variation margin payments for centrally cleared derivatives as settlements of the derivatives' exposure rather than collateral. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. Variation margin, as determined by the CME, is settled daily. As a result, derivative contracts that clear through the CME have an estimated fair value of zero as of December 31, 2020 and 2019. December 31, 2020 December 31, 2019 Notional Estimated Notional Estimated Derivatives designated as hedges of fair value: Financial institution counterparties: Loan/lease interest rate swaps - assets $ — $ — $ 2,545 $ 6 Loan/lease interest rate swaps - liabilities 3,724 (134) 6,000 (138) Non-hedging interest rate derivatives: Financial institution counterparties: Loan/lease interest rate swaps - assets — — 122,788 67 Loan/lease interest rate swaps - liabilities 1,173,173 (33,812) 1,002,860 (19,483) Loan/lease interest rate caps - assets 356,601 1,241 107,835 266 Customer counterparties: Loan/lease interest rate swaps - assets 1,173,173 84,424 1,002,860 43,857 Loan/lease interest rate swaps - liabilities — — 122,788 (310) Loan/lease interest rate caps - liabilities 356,601 (1,241) 107,835 (266) |
Schedule of Weighted-Average Rates Paid and Received for Interest Rate Swaps Outstanding | The weighted-average rates paid and received for interest rate swaps outstanding at December 31, 2020 were as follows: Weighted-Average Interest Interest Interest rate swaps: Fair value hedge loan/lease interest rate swaps 3.27 % 0.15 % Non-hedging interest rate swaps - financial institution counterparties 3.97 1.95 Non-hedging interest rate swaps - customer counterparties 1.95 3.97 |
Schedule of Notional Amounts and Estimated Fair Values of Commodity Derivative Positions | The notional amounts and estimated fair values of non-hedging commodity swap and option derivative positions outstanding are presented in the following table. We obtain dealer quotations and use internal valuation models with observable market data inputs to value our commodity derivative positions. December 31, 2020 December 31, 2019 Notional Notional Estimated Notional Estimated Financial institution counterparties: Oil - assets Barrels 3,056 $ 8,341 1,214 $ 2,796 Oil - liabilities Barrels 6,391 (32,112) 2,148 (6,916) Natural gas - assets MMBTUs 9,281 1,529 8,295 2,131 Natural gas - liabilities MMBTUs 15,079 (3,265) 2,689 (70) Customer counterparties: Oil - assets Barrels 6,391 32,670 2,172 7,208 Oil - liabilities Barrels 3,056 (8,264) 1,190 (2,652) Natural gas - assets MMBTUs 17,636 3,451 2,689 83 Natural gas - liabilities MMBTUs 6,724 (1,458) 8,295 (2,039) |
Schedule of Foreign Exchange Contracts, Statement of Financial Position | The notional amounts and fair values of open foreign currency forward contracts were as follows: December 31, 2020 December 31, 2019 Notional Notional Estimated Notional Estimated Financial institution counterparties: Forward contracts - liabilities CAD — $ — 4,593 $ (33) Customer counterparties: Forward contracts - assets CAD — — 4,583 45 |
Schedule of Amounts Included in Income Related to Interest Rate Derivatives Designated as Hedges of Fair Value | Amounts included in the consolidated statements of income related to interest rate derivatives designated as hedges of fair value were as follows: 2020 2019 2018 Commercial loan/lease interest rate swaps: Amount of gain (loss) included in interest income on loans $ (111) $ 86 $ 25 Amount of (gain) loss included in other non-interest expense 9 — (1) |
Schedule of Amounts Related to Non-Hedging Interest Rate and Commodity Derivatives | Amounts included in the consolidated statements of income related to non-hedging interest rate, commodity, foreign currency and other derivative instruments are presented in the table below. 2020 2019 2018 Non-hedging interest rate derivatives: Other non-interest income $ 3,413 $ 2,005 $ 4,112 Other non-interest expense 1 (1) — Non-hedging commodity derivatives: Other non-interest income 1,768 503 795 Non-hedging foreign currency derivatives: Other non-interest income 28 51 246 Non-hedging other derivatives: Other non-interest income 5,992 750 — |
Balance Sheet Offsetting Balanc
Balance Sheet Offsetting Balance Sheet Offsetting (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
Financial Instruments Eligible for Offset Consolidated Balance Sheet | Information about financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2020 is presented in the following tables. Gross Amount Gross Amount Net Amount December 31, 2020 Financial assets: Derivatives: Loan/lease interest rate swaps and caps $ 1,241 $ — $ 1,241 Commodity swaps and options 9,870 — 9,870 Total derivatives 11,111 — 11,111 Resell agreements — — — Total $ 11,111 $ — $ 11,111 Financial liabilities: Derivatives: Loan/lease interest rate swaps $ 33,946 $ — $ 33,946 Commodity swaps and options 35,377 — 35,377 Foreign currency forward contracts — — — Total derivatives 69,323 — 69,323 Repurchase agreements 2,068,147 — 2,068,147 Total $ 2,137,470 $ — $ 2,137,470 Information about financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2019 is presented in the following tables. Gross Amount Gross Amount Net Amount December 31, 2019 Financial assets: Derivatives: Loan/lease interest rate swaps and caps $ 339 $ — $ 339 Commodity swaps and options 4,927 — 4,927 Total derivatives 5,266 — 5,266 Resell agreements 31,299 — 31,299 Total $ 36,565 $ — $ 36,565 Financial liabilities: Derivatives: Loan/lease interest rate swaps $ 19,621 $ — $ 19,621 Commodity swaps and options 6,986 — 6,986 Foreign currency forward contracts 33 — 33 Total derivatives 26,640 — 26,640 Repurchase agreements 1,668,142 — 1,668,142 Total $ 1,694,782 $ — $ 1,694,782 |
Financial Instruments Derivative Assets Liabilities And Resell Agreements Net Of Amount Not Offset | Gross Amounts Not Offset Net Amount Financial Collateral Net December 31, 2020 Financial assets: Derivatives: Counterparty A $ 2 $ (2) $ — $ — Counterparty B 5,838 (5,838) — — Counterparty C — — — — Other counterparties 5,271 (5,271) — — Total derivatives 11,111 (11,111) — — Resell agreements — — — — Total $ 11,111 $ (11,111) $ — $ — Financial liabilities: Derivatives: Counterparty A $ 6,430 $ (2) $ (6,428) $ — Counterparty B 20,722 (5,838) (14,700) 184 Counterparty C 71 — (71) — Other counterparties 42,100 (5,271) (35,832) 997 Total derivatives 69,323 (11,111) (57,031) 1,181 Repurchase agreements 2,068,147 — (2,068,147) — Total $ 2,137,470 $ (11,111) $ (2,125,178) $ 1,181 Gross Amounts Not Offset Net Amount Financial Collateral Net December 31, 2019 Financial assets: Derivatives: Counterparty A $ 39 $ (39) $ — $ — Counterparty B 1,650 (1,650) — — Counterparty C 1 (1) — — Other counterparties 3,576 (3,546) — 30 Total derivatives 5,266 (5,236) — 30 Resell agreements 31,299 — (31,299) — Total $ 36,565 $ (5,236) $ (31,299) $ 30 Financial liabilities: Derivatives: Counterparty A $ 5,192 $ (39) $ (5,153) $ — Counterparty B 7,424 (1,650) (5,774) — Counterparty C 135 (1) (134) — Other counterparties 13,889 (3,546) (10,343) — Total derivatives 26,640 (5,236) (21,404) — Repurchase agreements 1,668,142 — (1,668,142) — Total $ 1,694,782 $ (5,236) $ (1,689,546) $ — |
Remaining Contractual Maturity of the Securities Sold Under Agreement | The remaining contractual maturity of repurchase agreements in the consolidated balance sheets as of December 31, 2020 and December 31, 2019 is presented in the following tables. Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater than 90 Days Total December 31, 2020 Repurchase agreements: U.S. Treasury $ 692,860 $ — $ — $ — $ 692,860 Residential mortgage-backed securities 1,375,287 — — — 1,375,287 Total borrowings $ 2,068,147 $ — $ — $ — $ 2,068,147 Gross amount of recognized liabilities for repurchase agreements $ 2,068,147 Amounts related to agreements not included in offsetting disclosures above $ — December 31, 2019 Repurchase agreements: U.S. Treasury $ 435,904 $ — $ — $ — $ 435,904 Residential mortgage-backed securities 1,232,238 — — — 1,232,238 Total borrowings $ 1,668,142 $ — $ — $ — $ 1,668,142 Gross amount of recognized liabilities for repurchase agreements $ 1,668,142 Amounts related to agreements not included in offsetting disclosures above $ — |
Fair Value Measurements (Tables
Fair Value Measurements (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Fair Value Disclosures [Abstract] | |
Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis | The following tables summarize financial assets and financial liabilities measured at fair value on a recurring basis as of December 31, 2020 and 2019, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Level 1 Level 2 Level 3 Total 2020 Securities available for sale: U.S. Treasury $ 1,119,633 $ — $ — $ 1,119,633 Residential mortgage-backed securities — 1,987,679 — 1,987,679 States and political subdivisions — 7,287,902 — 7,287,902 Other — 42,351 — 42,351 Trading account securities: U.S. Treasury 23,996 — — 23,996 States and political subdivisions — 460 — 460 Derivative assets: Interest rate swaps, caps and floors — 85,665 — 85,665 Commodity swaps and options — 45,535 456 45,991 Foreign currency forward contracts — — — — Derivative liabilities: Interest rate swaps, caps and floors — 35,187 — 35,187 Commodity swaps and options — 45,099 — 45,099 Foreign currency forward contracts — — — — 2019 Securities available for sale: U.S. Treasury $ 1,948,133 $ — $ — $ 1,948,133 Residential mortgage-backed securities — 2,207,594 — 2,207,594 States and political subdivisions — 7,070,997 — 7,070,997 Other — 42,867 — 42,867 Trading account securities: U.S. Treasury 24,298 — — 24,298 Derivative assets: Interest rate swaps, caps and floors — 44,196 — 44,196 Commodity swaps and options — 12,218 — 12,218 Foreign currency forward contracts 45 — — 45 Derivative liabilities: Interest rate swaps, caps and floors — 20,197 — 20,197 Commodity swaps and options — 11,677 — 11,677 Foreign currency forward contracts 33 — — 33 |
Impaired Loans Remeasured and Reported at Fair Value of Underlying Collateral | The following table presents impaired loans that were remeasured and reported at fair value through a specific valuation allowance allocation of the allowance for credit losses on loans based upon the fair value of the underlying collateral: 2020 2019 2018 Level 2 Carrying value of impaired loans before allocations $ 1,559 $ 2,354 $ 12,517 Specific valuation allowance allocations (450) (383) (2,599) Fair value $ 1,109 $ 1,971 $ 9,918 Level 3 Carrying value of impaired loans before allocations $ 34,302 $ 65,176 $ 22,688 Specific valuation allowance allocations (11,151) (18,019) 9,260 Fair value $ 23,151 $ 47,157 $ 31,948 |
Foreclosed Assets Remeasured and Reported at Fair Value | The following table presents foreclosed assets that were remeasured and reported at fair value: 2020 2019 2018 Foreclosed assets remeasured at initial recognition: Carrying value of foreclosed assets prior to remeasurement $ — $ 1,348 $ 2,899 Charge-offs recognized in the allowance for credit losses on loans — (76) — Fair value $ — $ 1,272 $ 2,899 Foreclosed assets remeasured subsequent to initial recognition: Carrying value of foreclosed assets prior to remeasurement $ 328 $ — $ 1,823 Write-downs included in other non-interest expense (231) — (473) Fair value $ 97 $ — $ 1,350 |
Estimated Fair Values of Financial Instruments | The estimated fair values of financial instruments that are reported at amortized cost in our consolidated balance sheets, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows: December 31, 2020 December 31, 2019 Carrying Estimated Carrying Estimated Financial assets: Level 2 inputs: Cash and cash equivalents $ 10,288,853 $ 10,288,853 $ 3,788,181 $ 3,788,181 Securities held to maturity 1,945,673 2,052,896 2,030,005 2,048,675 Cash surrender value of life insurance policies 189,984 189,984 187,156 187,156 Accrued interest receivable 181,432 181,432 183,850 183,850 Level 3 inputs: Loans, net 17,218,132 17,390,683 14,618,165 14,654,615 Financial liabilities: Level 2 inputs: Deposits 35,015,761 35,018,185 27,639,564 27,641,255 Federal funds purchased and repurchase agreements 2,116,997 2,116,997 1,695,342 1,695,342 Junior subordinated deferrable interest debentures 136,357 137,115 136,299 137,115 Subordinated notes payable and other borrowings 99,021 115,717 98,865 89,077 Accrued interest payable 8,127 8,127 12,393 12,393 |
Operating Segments (Tables)
Operating Segments (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Segment Reporting [Abstract] | |
Summary of Operating Results by Segment | Financial results by operating segment are detailed below. Certain prior period amounts have been reclassified to conform to the current presentation. Frost Wealth Advisors excludes off-balance-sheet managed and custody assets with a total fair value of $38.6 billion, $37.8 billion and $33.3 billion at December 31, 2020, 2019 and 2018. Banking Frost Non-Banks Consolidated 2020 Net interest income (expense) $ 981,441 $ 2,776 $ (8,216) $ 976,001 Credit loss expense 241,230 — — 241,230 Non-interest income 321,136 145,268 (950) 465,454 Non-interest expense 718,519 123,630 6,755 848,904 Income (loss) before income taxes 342,828 24,414 (15,921) 351,321 Income tax expense (benefit) 20,347 5,127 (5,304) 20,170 Net income (loss) 322,481 19,287 (10,617) 331,151 Preferred stock dividends — — 2,016 2,016 Redemption of preferred stock — — 5,514 5,514 Net income (loss) available to common shareholders $ 322,481 $ 19,287 $ (18,147) $ 323,621 Revenues from (expenses to) external customers $ 1,302,577 $ 148,044 $ (9,166) $ 1,441,455 Average assets (in millions) $ 37,892 $ 59 $ 10 $ 37,961 Banking Frost Non-Banks Consolidated 2019 Net interest income (expense) $ 1,010,368 $ 4,001 $ (10,364) $ 1,004,005 Credit loss expense 33,758 1 — 33,759 Non-interest income 218,447 145,905 (450) 363,902 Non-interest expense 703,121 124,622 6,936 834,679 Income (loss) before income taxes 491,936 25,283 (17,750) 499,469 Income tax expense (benefit) 55,520 5,308 (4,958) 55,870 Net income (loss) 436,416 19,975 (12,792) 443,599 Preferred stock dividends — — 8,063 8,063 Net income (loss) available to common shareholders $ 436,416 $ 19,975 $ (20,855) $ 435,536 Revenues from (expenses to) external customers $ 1,228,815 $ 149,906 $ (10,814) $ 1,367,907 Average assets (in millions) $ 32,019 $ 56 $ 11 $ 32,086 2018 Net interest income (expense) $ 963,757 $ 4,083 $ (9,948) $ 957,892 Credit loss expense 21,685 — — 21,685 Non-interest income 213,763 138,045 (522) 351,286 Non-interest expense 657,376 114,166 7,270 778,812 Income (loss) before income taxes 498,459 27,962 (17,740) 508,681 Income tax expense (benefit) 52,928 5,872 (5,037) 53,763 Net income (loss) 445,531 22,090 (12,703) 454,918 Preferred stock dividends — — 8,063 8,063 Net income (loss) available to common shareholders $ 445,531 $ 22,090 $ (20,766) $ 446,855 Revenues from (expenses to) external customers $ 1,177,520 $ 142,128 $ (10,470) $ 1,309,178 Average assets (in millions) $ 30,964 $ 54 $ 12 $ 31,030 |
Condensed Financial Statement_2
Condensed Financial Statements of Parent Company (Tables) | 12 Months Ended |
Dec. 31, 2020 | |
Condensed Financial Information Disclosure [Abstract] | |
Schedule of Condensed Balance Sheets | Condensed Balance Sheets December 31, 2020 2019 Assets: Cash $ 381,240 $ 9,116 Resell agreements — 258,000 Total cash and cash equivalents 381,240 267,116 Investment in subsidiaries 4,155,619 3,896,962 Accrued interest receivable and other assets 2,164 2,545 Total assets $ 4,539,023 $ 4,166,623 Liabilities: Junior subordinated deferrable interest debentures, net of unamortized issuance costs $ 136,357 $ 136,299 Subordinated notes, net of unamortized issuance costs 99,021 98,865 Accrued interest payable and other liabilities 10,629 19,791 Total liabilities 246,007 254,955 Shareholders’ Equity 4,293,016 3,911,668 Total liabilities and shareholders’ equity $ 4,539,023 $ 4,166,623 |
Schedule of Condensed Statements of Income | Condensed Statements of Income Year Ended December 31, 2020 2019 2018 Income: Dividend income paid by Frost Bank $ 298,884 $ 234,531 $ 223,371 Dividend income paid by non-banks 736 1,822 953 Interest and other income 446 2,868 1,828 Total income 300,066 239,221 226,152 Expenses: Interest expense 8,216 10,363 9,948 Salaries and employee benefits 1,581 1,551 1,973 Other 6,833 7,033 7,016 Total expenses 16,630 18,947 18,937 Income before income taxes and equity in undistributed earnings of subsidiaries 283,436 220,274 207,215 Income tax benefit 5,406 5,135 5,218 Equity in undistributed earnings of subsidiaries 42,309 218,190 242,485 Net income 331,151 443,599 454,918 Preferred stock dividends 2,016 8,063 8,063 Redemption of preferred stock 5,514 — — Net income available to common shareholders $ 323,621 $ 435,536 $ 446,855 |
Schedule of Condensed Statements of Cash Flows | Condensed Statements of Cash Flows Year Ended December 31, 2020 2019 2018 Operating Activities: Net income $ 331,151 $ 443,599 $ 454,918 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed earnings of subsidiaries (42,309) (218,190) (242,485) Stock-based compensation 770 780 721 Net tax benefit from stock-based compensation 370 240 304 Net change in other assets and other liabilities (8,937) 22,216 (12,709) Net cash from operating activities 281,045 248,645 200,749 Investing Activities: Net cash from investing activities — — — Financing Activities: Redemption of Series A preferred stock (150,000) — — Proceeds from issuance of Series B preferred stock 145,452 — — Proceeds from stock option exercises 12,557 20,770 31,647 Proceeds from stock-based compensation activities of subsidiaries 13,148 15,166 13,222 Purchase of treasury stock (15,785) (68,793) (101,010) Treasury stock issued to 401(k) stock purchase plan 10,307 — — Cash dividends paid on preferred stock (2,016) (8,063) (8,063) Cash dividends paid on common stock (180,584) (177,006) (165,449) Net cash from financing activities (166,921) (217,926) (229,653) Net change in cash and cash equivalents 114,124 30,719 (28,904) Cash and cash equivalents at beginning of year 267,116 236,397 265,301 Cash and cash equivalents at end of year $ 381,240 $ 267,116 $ 236,397 |
Summary of Significant Accoun_4
Summary of Significant Accounting Policies (Narrative) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||||||
Dec. 31, 2020 | Dec. 31, 2018 | Jan. 01, 2020 | Dec. 31, 2019 | Jan. 01, 2019 | Jan. 01, 2018 | Dec. 31, 2017 | |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cash on hand or on deposit required | $ 42,000 | $ 918,000 | |||||
Cash collateral on deposit | 74,000 | 37,500 | |||||
Foreclosed assets | 850 | 1,100 | |||||
Cumulative effect of accounting change | $ (14,672) | (29,252) | $ (2,285) | ||||
Operating Lease, Right-of-Use Asset | $ 292,087 | 297,736 | $ 170,500 | ||||
Minimum [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Range of change in fair value of derivative hedging instrument to be considered highly effective | 80.00% | ||||||
Maximum [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Range of change in fair value of derivative hedging instrument to be considered highly effective | 125.00% | ||||||
Other Liabilities [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Operating lease, liability | $ 323,044 | 323,700 | 174,400 | ||||
Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | (14,672) | $ (29,300) | $ (29,252) | $ (14,700) | $ (2,300) | $ (2,285) | |
Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act | (9,535) | ||||||
Accumulated Other Comprehensive Income (Loss), Net of Tax [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act | $ 9,535 |
Summary of Significant Accoun_5
Summary of Significant Accounting Policies (Additional Cash Flow Information) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Accounting Policies [Abstract] | |||
Cash paid for interest | $ 49,300 | $ 124,781 | $ 89,270 |
Cash paid for income tax | 44,140 | 45,352 | 5,112 |
Transfer of securities from available for sale to held to maturity | 0 | 377,812 | 0 |
Unsettled securities transactions | 57,783 | 0 | 330 |
Loans foreclosed and transferred to other real estate owned and foreclosed assets | 140 | 1,348 | 2,899 |
Loans to facilitate the sale of other real estate owned | 0 | 847 | 0 |
Right-of-use lease assets obtained in exchange for lessee operating lease liabilities | 18,284 | 319,286 | 0 |
Treasury stock issued to 401(k) stock purchase plan | $ 10,307 | $ 0 | $ 0 |
Summary of Significant Accoun_6
Summary of Significant Accounting Policies (Impact of Adoption of New Accounting Standard Related to CECL) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017 |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ 160 | $ 0 | |||||
Financing Receivable, Allowance for Credit Loss | 263,177 | 132,167 | |||||
Off-Balance Sheet, Credit Loss, Liability | 44,152 | 500 | $ 500 | $ 428 | |||
Cumulative effect of accounting change | (29,252) | (14,672) | (2,285) | ||||
Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | $ (29,300) | (29,252) | $ (14,700) | (14,672) | $ (2,300) | (2,285) | |
Commercial Portfolio Segment [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 73,843 | 51,593 | 48,580 | 59,614 | |||
Commercial Portfolio Segment [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | (16,798) | ||||||
Commercial and Industrial Total Energy Loans [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 39,553 | 37,382 | 29,052 | 51,528 | |||
Commercial and Industrial Total Energy Loans [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | 8,258 | ||||||
Commercial Real Estate Portfolio Segment [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 134,892 | 31,037 | 38,777 | 30,948 | |||
Commercial Real Estate Portfolio Segment [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | 10,680 | ||||||
Total consumer real estate loans [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 7,926 | 4,113 | 6,103 | 5,657 | |||
Total consumer real estate loans [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | (1,890) | ||||||
Consumer Loan [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 6,963 | 8,042 | 9,620 | 7,617 | |||
Consumer Loan [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | 1,776 | ||||||
Loans Receivable [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 263,177 | 132,167 | $ 132,132 | $ 155,364 | |||
Loans Receivable [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | 2,026 | ||||||
US Treasury [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | 0 | ||||||
Residential Mortgage Backed Securities [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 | |||||
Residential Mortgage Backed Securities [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | 0 | ||||||
States and Political Subdivisions [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 160 | 0 | |||||
States and Political Subdivisions [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | (170) | ||||||
Other [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 | |||||
Other [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | 0 | ||||||
Debt Securities [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ 160 | $ 0 | |||||
Debt Securities [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | (170) | ||||||
Commitments to Extend Credit [Member] | Retained Earnings [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Cumulative effect of accounting change | (31,108) | ||||||
Pre-Adoption Allowance [Member] | Commercial Portfolio Segment [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 51,593 | ||||||
Pre-Adoption Allowance [Member] | Commercial and Industrial Total Energy Loans [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 37,382 | ||||||
Pre-Adoption Allowance [Member] | Commercial Real Estate Portfolio Segment [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 31,037 | ||||||
Pre-Adoption Allowance [Member] | Total consumer real estate loans [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 4,113 | ||||||
Pre-Adoption Allowance [Member] | Consumer Loan [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 8,042 | ||||||
Pre-Adoption Allowance [Member] | Loans Receivable [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 132,167 | ||||||
Pre-Adoption Allowance [Member] | US Treasury [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Pre-Adoption Allowance [Member] | Residential Mortgage Backed Securities [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Pre-Adoption Allowance [Member] | States and Political Subdivisions [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Pre-Adoption Allowance [Member] | Other [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Pre-Adoption Allowance [Member] | Debt Securities [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Pre-Adoption Allowance [Member] | Commitments to Extend Credit [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Off-Balance Sheet, Credit Loss, Liability | 500 | ||||||
Accounting Standards Update 2016-13 [Member] | Commercial Portfolio Segment [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 21,263 | ||||||
Accounting Standards Update 2016-13 [Member] | Commercial and Industrial Total Energy Loans [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | (10,453) | ||||||
Accounting Standards Update 2016-13 [Member] | Commercial Real Estate Portfolio Segment [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | (13,519) | ||||||
Accounting Standards Update 2016-13 [Member] | Total consumer real estate loans [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 2,392 | ||||||
Accounting Standards Update 2016-13 [Member] | Consumer Loan [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | (2,248) | ||||||
Accounting Standards Update 2016-13 [Member] | Loans Receivable [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | (2,565) | ||||||
Accounting Standards Update 2016-13 [Member] | US Treasury [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Accounting Standards Update 2016-13 [Member] | Residential Mortgage Backed Securities [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Accounting Standards Update 2016-13 [Member] | States and Political Subdivisions [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 215 | ||||||
Accounting Standards Update 2016-13 [Member] | Other [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Accounting Standards Update 2016-13 [Member] | Debt Securities [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 215 | ||||||
Accounting Standards Update 2016-13 [Member] | Commitments to Extend Credit [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Off-Balance Sheet, Credit Loss, Liability | 39,377 | ||||||
Post-Adoption Allowance [Member] | Commercial Portfolio Segment [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 72,856 | ||||||
Post-Adoption Allowance [Member] | Commercial and Industrial Total Energy Loans [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 26,929 | ||||||
Post-Adoption Allowance [Member] | Commercial Real Estate Portfolio Segment [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 17,518 | ||||||
Post-Adoption Allowance [Member] | Total consumer real estate loans [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 6,505 | ||||||
Post-Adoption Allowance [Member] | Consumer Loan [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 5,794 | ||||||
Post-Adoption Allowance [Member] | Loans Receivable [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Financing Receivable, Allowance for Credit Loss | 129,602 | ||||||
Post-Adoption Allowance [Member] | US Treasury [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Post-Adoption Allowance [Member] | Residential Mortgage Backed Securities [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Post-Adoption Allowance [Member] | States and Political Subdivisions [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 215 | ||||||
Post-Adoption Allowance [Member] | Other [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||||
Post-Adoption Allowance [Member] | Debt Securities [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 215 | ||||||
Post-Adoption Allowance [Member] | Commitments to Extend Credit [Member] | |||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||||
Off-Balance Sheet, Credit Loss, Liability | $ 39,877 |
Securities (Narrative) (Detail)
Securities (Narrative) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Schedule Of Marketable Securities [Line Items] | ||
Securities available for sale, at estimated fair value | $ 10,437,565 | $ 11,269,591 |
Net unamortized, unrealized gain on transferred securities included in accumulated other comprehensive income, pre tax | 3,500 | 4,800 |
Net unamortized, unrealized gain on transferred securities included in accumulated other comprehensive income, net of tax | 2,800 | 3,800 |
Debt Securities, Held-to-maturity, Past Due | 0 | |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ 160 | 0 |
Percent Municipal Bond Portfolio Issued By Political Subdivision Or Agencies Within State Of Texas Guaranteed By Texas Permanent School Fund Or Have Been Pre-Refunded | 77.80% | |
Debt Securities, Available-for-sale, Allowance for Credit Loss | $ 0 | 0 |
Debt Securities [Member] | ||
Schedule Of Marketable Securities [Line Items] | ||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 160 | 0 |
Held-to-maturity Securities [Member] | ||
Schedule Of Marketable Securities [Line Items] | ||
Carry value of securities pledged | 659,200 | 561,400 |
Accrued interest receivable | 21,700 | 21,100 |
Reclassified To Held To Maturity [Member] | ||
Schedule Of Marketable Securities [Line Items] | ||
Securities available for sale, at estimated fair value | 377,800 | |
Available for sale securities reclassified to held to maturity, unrealized gain | 3,300 | |
Available for sale securities reclassified to held to maturity, unrealized gain net of tax | 2,600 | |
Securities Available For Sale [Member] | ||
Schedule Of Marketable Securities [Line Items] | ||
Carry value of securities pledged | 4,400,000 | 3,400,000 |
Accrued interest receivable | 111,000 | $ 115,900 |
Guaranteed by the Texas PSF [Member] | Debt Securities [Member] | ||
Schedule Of Marketable Securities [Line Items] | ||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | |
Pre-Refunded [Member] | Debt Securities [Member] | ||
Schedule Of Marketable Securities [Line Items] | ||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ 0 |
Securities (Year End Securities
Securities (Year End Securities Held to Maturity) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Schedule of Investments [Line Items] | ||
Held to Maturity, Amortized Cost | $ 1,945,833 | $ 2,030,005 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 107,063 | 28,931 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 10,261 |
Debt Securities, Held to Maturity, Estimated Fair Value | 2,052,896 | 2,048,675 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | (160) | 0 |
Debt Securities, Held-to-Maturity Net Carrying Amount | 1,945,673 | 2,030,005 |
Residential Mortgage Backed Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Held to Maturity, Amortized Cost | 528,784 | 530,861 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 41,742 | 22 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 9,365 |
Debt Securities, Held to Maturity, Estimated Fair Value | 570,526 | 521,518 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 |
Debt Securities, Held-to-Maturity Net Carrying Amount | 528,784 | 530,861 |
States and Political Subdivisions [Member] | ||
Schedule of Investments [Line Items] | ||
Held to Maturity, Amortized Cost | 1,415,549 | 1,497,644 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 65,321 | 28,909 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 896 |
Debt Securities, Held to Maturity, Estimated Fair Value | 1,480,870 | 1,525,657 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | (160) | 0 |
Debt Securities, Held-to-Maturity Net Carrying Amount | 1,415,389 | 1,497,644 |
Other [Member] | ||
Schedule of Investments [Line Items] | ||
Held to Maturity, Amortized Cost | 1,500 | 1,500 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 0 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 0 |
Debt Securities, Held to Maturity, Estimated Fair Value | 1,500 | 1,500 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 |
Debt Securities, Held-to-Maturity Net Carrying Amount | $ 1,500 | $ 1,500 |
Securities (Securities Moody's
Securities (Securities Moody's and Standard & Poor's Bond Rating) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | $ 1,945,833 | $ 2,030,005 |
States and Political Subdivisions [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 1,415,549 | 1,497,644 |
States and Political Subdivisions [Member] | Not Guaranteed or Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 284,805 | |
States and Political Subdivisions [Member] | Guaranteed by the Texas PSF [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 659,999 | |
States and Political Subdivisions [Member] | Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 470,745 | |
Other [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 1,500 | $ 1,500 |
Aaa/AAA [Member] | States and Political Subdivisions [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 1,245,760 | |
Aaa/AAA [Member] | States and Political Subdivisions [Member] | Not Guaranteed or Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 115,016 | |
Aaa/AAA [Member] | States and Political Subdivisions [Member] | Guaranteed by the Texas PSF [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 659,999 | |
Aaa/AAA [Member] | States and Political Subdivisions [Member] | Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 470,745 | |
Aaa/AAA [Member] | Other [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
Aa/AA [Member] | States and Political Subdivisions [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 107,065 | |
Aa/AA [Member] | States and Political Subdivisions [Member] | Not Guaranteed or Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 107,065 | |
Aa/AA [Member] | States and Political Subdivisions [Member] | Guaranteed by the Texas PSF [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
Aa/AA [Member] | States and Political Subdivisions [Member] | Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
Aa/AA [Member] | Other [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
A [Member] | States and Political Subdivisions [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 62,724 | |
A [Member] | States and Political Subdivisions [Member] | Not Guaranteed or Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 62,724 | |
A [Member] | States and Political Subdivisions [Member] | Guaranteed by the Texas PSF [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
A [Member] | States and Political Subdivisions [Member] | Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
A [Member] | Other [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
Not rated [Member] | States and Political Subdivisions [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
Not rated [Member] | States and Political Subdivisions [Member] | Not Guaranteed or Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
Not rated [Member] | States and Political Subdivisions [Member] | Guaranteed by the Texas PSF [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
Not rated [Member] | States and Political Subdivisions [Member] | Pre-Refunded [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | 0 | |
Not rated [Member] | Other [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Held to Maturity, Amortized Cost | $ 1,500 |
Securities (Securities Held to
Securities (Securities Held to Maturity Allowance for Credit Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Schedule of Held-to-maturity Securities [Line Items] | |||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ 160 | $ 0 | |
Impact of New Accounting Pronouncement | 39,377 | 0 | $ 0 |
Debt Securities [Member] | |||
Schedule of Held-to-maturity Securities [Line Items] | |||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 160 | $ 0 | |
Impact of New Accounting Pronouncement | 215 | ||
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Period Increase (Decrease) | $ (55) |
Securities (Securities Availabl
Securities (Securities Available for Sale) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | $ 9,727,401 | $ 10,877,769 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 710,168 | 405,399 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 4 | 13,577 |
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0 |
Available for Sale, Estimated Fair Value | 10,437,565 | 11,269,591 |
US Treasury [Member] | ||
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | 1,084,542 | 1,941,283 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 35,091 | 18,934 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 12,084 |
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0 |
Available for Sale, Estimated Fair Value | 1,119,633 | 1,948,133 |
Residential Mortgage Backed Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | 1,916,581 | 2,176,275 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 71,102 | 32,608 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 4 | 1,289 |
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0 |
Available for Sale, Estimated Fair Value | 1,987,679 | 2,207,594 |
States and Political Subdivisions [Member] | ||
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | 6,683,927 | 6,717,344 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 603,975 | 353,857 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 204 |
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0 |
Available for Sale, Estimated Fair Value | 7,287,902 | 7,070,997 |
Other [Member] | ||
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | 42,351 | 42,867 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 0 | 0 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 0 |
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0 |
Available for Sale, Estimated Fair Value | $ 42,351 | $ 42,867 |
Securities (Year End Securiti_2
Securities (Year End Securities with Unrealized Losses Segregated by Length of Impairment) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Schedule of Available-for-Sale Securities [Line Items] | ||
Available for Sale, Less than 12 Months, Estimated Fair Value | $ 1,711 | |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 3 | |
Available for Sale, More than 12 Months, Estimated Fair Value | 121 | |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 1 | |
Available for Sale, Total Estimated Fair Value | 1,832 | |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 4 | $ 13,577 |
Residential Mortgage Backed Securities [Member] | ||
Schedule of Available-for-Sale Securities [Line Items] | ||
Available for Sale, Less than 12 Months, Estimated Fair Value | 1,711 | |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 3 | |
Available for Sale, More than 12 Months, Estimated Fair Value | 121 | |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 1 | |
Available for Sale, Total Estimated Fair Value | 1,832 | |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | $ 4 | $ 1,289 |
Securities (Amortized Cost and
Securities (Amortized Cost and Estimated Fair Value of Securities Excluding Trading Securities Presented by Contractual Maturity) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Schedule of Available-for-Sale Securities [Line Items] | ||
Held to Maturity, Due in one year or less, Amortized Cost | $ 155,963 | |
Held to Maturity, Due after one year through five years, Amortized Cost | 464,967 | |
Held to Maturity, Due after five years through ten years, Amortized Cost | 723,194 | |
Held to Maturity, Due after ten years, Amortized Cost | 601,709 | |
Held to Maturity, Amortized Cost | 1,945,833 | $ 2,030,005 |
Held to Maturity, Due in one year or less, Estimated Fair Value | 156,711 | |
Held to Maturity, Due after one year through five years, Estimated Fair Value | 482,197 | |
Held to Maturity, Due after five years through ten years, Estimated Fair Value | 769,547 | |
Held to Maturity, Due after ten years, Estimated Fair Value | 644,441 | |
Held to Maturity, Estimated Fair Value | 2,052,896 | 2,048,675 |
Available for Sale, Due in one year or less, Amortized Cost | 1,010,272 | |
Available for Sale, Due after one year through five years, Amortized Cost | 1,634,771 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 661,303 | |
Available for Sale, Due after ten years, Amortized Cost | 6,378,704 | |
Available for Sale, Amortized Cost | 9,727,401 | 10,877,769 |
Available for Sale, Due in one year or less, Estimated Fair Value | 1,025,222 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 1,777,450 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 717,876 | |
Available for Sale, Due after ten years, Estimated Fair Value | 6,874,666 | |
Available for Sale, Estimated Fair Value | 10,437,565 | 11,269,591 |
Residential Mortgage Backed Securities [Member] | ||
Schedule of Available-for-Sale Securities [Line Items] | ||
Held to Maturity, Due in one year or less, Amortized Cost | 22 | |
Held to Maturity, Due after one year through five years, Amortized Cost | 165 | |
Held to Maturity, Due after five years through ten years, Amortized Cost | 516,118 | |
Held to Maturity, Due after ten years, Amortized Cost | 12,479 | |
Held to Maturity, Amortized Cost | 528,784 | 530,861 |
Held to Maturity, Due in one year or less, Estimated Fair Value | 22 | |
Held to Maturity, Due after one year through five years, Estimated Fair Value | 167 | |
Held to Maturity, Due after five years through ten years, Estimated Fair Value | 556,610 | |
Held to Maturity, Due after ten years, Estimated Fair Value | 13,727 | |
Held to Maturity, Estimated Fair Value | 570,526 | 521,518 |
Available for Sale, Due in one year or less, Amortized Cost | 11,833 | |
Available for Sale, Due after one year through five years, Amortized Cost | 25,336 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 22,583 | |
Available for Sale, Due after ten years, Amortized Cost | 1,856,829 | |
Available for Sale, Amortized Cost | 1,916,581 | 2,176,275 |
Available for Sale, Due in one year or less, Estimated Fair Value | 12,278 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 26,724 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 23,116 | |
Available for Sale, Due after ten years, Estimated Fair Value | 1,925,561 | |
Available for Sale, Estimated Fair Value | 1,987,679 | 2,207,594 |
States and Political Subdivisions [Member] | ||
Schedule of Available-for-Sale Securities [Line Items] | ||
Held to Maturity, Due in one year or less, Amortized Cost | 155,941 | |
Held to Maturity, Due after one year through five years, Amortized Cost | 463,302 | |
Held to Maturity, Due after five years through ten years, Amortized Cost | 207,076 | |
Held to Maturity, Due after ten years, Amortized Cost | 589,230 | |
Held to Maturity, Amortized Cost | 1,415,549 | 1,497,644 |
Held to Maturity, Due in one year or less, Estimated Fair Value | 156,689 | |
Held to Maturity, Due after one year through five years, Estimated Fair Value | 480,530 | |
Held to Maturity, Due after five years through ten years, Estimated Fair Value | 212,937 | |
Held to Maturity, Due after ten years, Estimated Fair Value | 630,714 | |
Held to Maturity, Estimated Fair Value | 1,480,870 | 1,525,657 |
Available for Sale, Due in one year or less, Amortized Cost | 199,697 | |
Available for Sale, Due after one year through five years, Amortized Cost | 1,323,635 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 638,720 | |
Available for Sale, Due after ten years, Amortized Cost | 4,521,875 | |
Available for Sale, Amortized Cost | 6,683,927 | 6,717,344 |
Available for Sale, Due in one year or less, Estimated Fair Value | 201,166 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 1,442,871 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 694,760 | |
Available for Sale, Due after ten years, Estimated Fair Value | 4,949,105 | |
Available for Sale, Estimated Fair Value | 7,287,902 | 7,070,997 |
Other [Member] | ||
Schedule of Available-for-Sale Securities [Line Items] | ||
Held to Maturity, Due in one year or less, Amortized Cost | 0 | |
Held to Maturity, Due after one year through five years, Amortized Cost | 1,500 | |
Held to Maturity, Due after five years through ten years, Amortized Cost | 0 | |
Held to Maturity, Due after ten years, Amortized Cost | 0 | |
Held to Maturity, Amortized Cost | 1,500 | 1,500 |
Held to Maturity, Due in one year or less, Estimated Fair Value | 0 | |
Held to Maturity, Due after one year through five years, Estimated Fair Value | 1,500 | |
Held to Maturity, Due after five years through ten years, Estimated Fair Value | 0 | |
Held to Maturity, Due after ten years, Estimated Fair Value | 0 | |
Held to Maturity, Estimated Fair Value | 1,500 | 1,500 |
Available for Sale, Due in one year or less, Amortized Cost | 0 | |
Available for Sale, Due after one year through five years, Amortized Cost | 0 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 0 | |
Available for Sale, Due after ten years, Amortized Cost | 0 | |
Available for Sale, Amortized Cost | 42,351 | 42,867 |
Available for Sale, Due in one year or less, Estimated Fair Value | 0 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 0 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 0 | |
Available for Sale, Due after ten years, Estimated Fair Value | 0 | |
Available for Sale, Estimated Fair Value | 42,351 | 42,867 |
US Treasury [Member] | ||
Schedule of Available-for-Sale Securities [Line Items] | ||
Available for Sale, Due in one year or less, Amortized Cost | 798,742 | |
Available for Sale, Due after one year through five years, Amortized Cost | 285,800 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 0 | |
Available for Sale, Due after ten years, Amortized Cost | 0 | |
Available for Sale, Amortized Cost | 1,084,542 | 1,941,283 |
Available for Sale, Due in one year or less, Estimated Fair Value | 811,778 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 307,855 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 0 | |
Available for Sale, Due after ten years, Estimated Fair Value | 0 | |
Available for Sale, Estimated Fair Value | $ 1,119,633 | $ 1,948,133 |
Securities (Sales of Securities
Securities (Sales of Securities Available for Sale) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Investments, Debt and Equity Securities [Abstract] | |||
Proceeds from sales | $ 1,162,352 | $ 18,660,147 | $ 16,806,062 |
Gross realized gains | 108,989 | 930 | 3 |
Gross realized losses | 0 | (637) | (159) |
Tax benefit (expense) related to securities gains/losses | $ (22,888) | $ (62) | $ 33 |
Securities Securities - (Premiu
Securities Securities - (Premium Amortization and Discount Accretion Included in Income on Securities) (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Investments, Debt and Equity Securities [Abstract] | |||
Premium amortization | $ (126,210) | $ (120,785) | $ (108,483) |
Discount accretion | 2,425 | 5,227 | 7,955 |
Net (premium amortization) discount accretion | $ (123,785) | $ (115,558) | $ (100,528) |
Securities (Year End Trading Ac
Securities (Year End Trading Account Securities at Estimated Fair Value) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Debt and Equity Securities, FV-NI [Line Items] | ||
Trading account securities | $ 24,456 | $ 24,298 |
US Treasury [Member] | ||
Debt and Equity Securities, FV-NI [Line Items] | ||
Trading account securities | 23,996 | 24,298 |
States and Political Subdivisions [Member] | ||
Debt and Equity Securities, FV-NI [Line Items] | ||
Trading account securities | $ 460 | $ 0 |
Securities (Net Gains and Losse
Securities (Net Gains and Losses on Trading Account Securities) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Investments, Debt and Equity Securities [Abstract] | |||
Net gain on sales transactions | $ 1,102 | $ 2,173 | $ 1,816 |
Net mark-to-market gains (losses) | 85 | (176) | 105 |
Net gain on trading account securities | $ 1,187 | $ 1,997 | $ 1,921 |
Loans (Narrative) (Detail)
Loans (Narrative) (Detail) $ in Thousands | 12 Months Ended | |||
Dec. 31, 2020USD ($)GradeItem | Dec. 31, 2019USD ($)Grade | Dec. 31, 2018USD ($) | Dec. 31, 2017USD ($) | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Concentration of loans in a single industry in excess of ten percent | 0.00% | 0.00% | ||
Maximum percentage loan related to single industry | 10.00% | 10.00% | ||
Commercial and industrial loans related to overdraft for correspondent bank customer | $ 5,600 | $ 9,000 | ||
Number Of COVID-19 Loan Deferments At Period-End | Item | 39 | |||
COVID 19 Loan Deferment | $ 45,900 | |||
Financing Receivable, Threshold Period Past Due | 90 days | |||
Interest income recognized subsequent to classification as impaired | $ 0 | $ 0 | ||
Number of days past due for payment of interest on loans, minimum | 120 days | |||
Texas Leading Index economic condition indicator | 118.3 | 127.1 | ||
Financing Receivable, Allowance for Credit Loss | $ 263,177 | $ 132,167 | ||
Loans Receivable [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Accrued interest receivable | $ 48,700 | $ 45,500 | ||
Commercial and Industrial Total Energy Loans [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Percentage of total energy loans to total loans | 7.10% | 11.20% | ||
Percentage of total energy loans to total loans excluding PPP Loans | 8.20% | |||
Weighted Average Risk Grade | Grade | 6.85 | 6.39 | ||
Financing Receivable, Allowance for Credit Loss | $ 39,553 | $ 37,382 | 29,052 | $ 51,528 |
Commercial and Industrial Total Energy Loans [Member] | Risk Grade One To Eight [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Weighted Average Risk Grade | Grade | 5.99 | 5.90 | ||
Non Accrual Loans [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Additional interest that would have been recognized on non-accrual loans, net of tax | $ 2,900 | $ 3,900 | 5,200 | |
Grade 12 [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
General percentage of valuation allowance in excess of principal balance, maximum | 30.00% | |||
Grade 13 [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
General percentage of valuation allowance in excess of principal balance, minimum | 30.00% | |||
Commercial Portfolio Segment [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Weighted Average Risk Grade | Grade | 6.45 | 6.44 | ||
Financing Receivable, Allowance for Credit Loss | $ 73,843 | $ 51,593 | 48,580 | 59,614 |
Commercial Portfolio Segment [Member] | Risk Grade One To Eight [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Weighted Average Risk Grade | Grade | 6.13 | 6.17 | ||
Commercial and Industrial, Other Commercial [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Number of days past due for payment of interest on loans, minimum | 180 days | |||
Commercial Real Estate Portfolio Segment [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Weighted Average Risk Grade | Grade | 7.32 | 7.07 | ||
Financing Receivable, Allowance for Credit Loss | $ 134,892 | $ 31,037 | 38,777 | 30,948 |
Commercial Real Estate Portfolio Segment [Member] | Risk Grade One To Eight [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Weighted Average Risk Grade | Grade | 6.88 | |||
Commercial Real Estate Buildings Land And Other Financing Receivable [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Weighted Average Risk Grade | Grade | 7.34 | 7.01 | ||
Commercial Real Estate Buildings Land And Other Financing Receivable [Member] | Risk Grade One To Eight [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Weighted Average Risk Grade | Grade | 6.97 | 6.78 | ||
Construction Loans [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Weighted Average Risk Grade | Grade | 7.22 | 7.31 | ||
Construction Loans [Member] | Risk Grade One To Eight [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Weighted Average Risk Grade | Grade | 6.99 | 7.25 | ||
Consumer Loan [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | $ 6,963 | $ 8,042 | $ 9,620 | $ 7,617 |
Paycheck Protection Program [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 0 | |||
Commitments to Extend Credit [Member] | Commercial and Industrial Total Energy Loans [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Unfunded balances | 919,100 | |||
Standby Letters of Credit [Member] | Commercial and Industrial Total Energy Loans [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Unfunded balances | $ 60,700 |
Loans (Loans) (Detail)
Loans (Loans) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 17,481,309 | $ 14,750,332 |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 4,955,341 | 5,187,466 |
Energy Production [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 976,473 | 1,348,900 |
Energy Service [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 116,825 | 192,996 |
Energy Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 141,900 | 110,986 |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 1,235,198 | 1,652,882 |
Paycheck Protection Program [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 2,433,849 | 0 |
Commercial mortgage [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 5,478,806 | 4,594,113 |
Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 1,223,814 | 1,312,659 |
Commercial land loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 317,847 | 289,467 |
Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 7,020,467 | 6,196,239 |
Home Equity Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 329,390 | 375,596 |
Home Equity Line of Credit [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 452,854 | 354,671 |
Other consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 548,530 | 464,146 |
Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 1,330,774 | 1,194,413 |
Real Estate Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | 8,351,241 | 7,390,652 |
Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 505,680 | $ 519,332 |
Loans (Activities in Related Pa
Loans (Activities in Related Party Loans) (Detail) $ in Thousands | 12 Months Ended |
Dec. 31, 2020USD ($) | |
Receivables [Abstract] | |
Balance outstanding at December 31, 2019 | $ 298,528 |
Principal additions | 267,951 |
Principal reductions | (212,157) |
Other changes | (1,217) |
Balance outstanding at December 31, 2020 | $ 353,105 |
Loans (Non-Accrual Loans, Segre
Loans (Non-Accrual Loans, Segregated by Class of Loans) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | $ 61,449 | $ 102,303 |
Financing Receivable, Nonaccrual, No Allowance | 21,911 | 24,692 |
Commercial Portfolio Segment [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 19,849 | 26,038 |
Financing Receivable, Nonaccrual, No Allowance | 4,479 | 13,266 |
Commercial and Industrial Total Energy Loans [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 23,168 | 65,761 |
Financing Receivable, Nonaccrual, No Allowance | 639 | 3,281 |
Paycheck Protection Program [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 0 | 0 |
Financing Receivable, Nonaccrual, No Allowance | 0 | 0 |
Commercial Real Estate, Buildings, Land and Other [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 15,737 | 8,912 |
Financing Receivable, Nonaccrual, No Allowance | 14,116 | 6,558 |
Construction Loans [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 1,684 | 665 |
Financing Receivable, Nonaccrual, No Allowance | 1,684 | 665 |
Total consumer real estate loans [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 993 | 922 |
Financing Receivable, Nonaccrual, No Allowance | 993 | 922 |
Consumer Loan [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 18 | 5 |
Financing Receivable, Nonaccrual, No Allowance | $ 0 | $ 0 |
Loans (Non-Accrual Loans, Seg_2
Loans (Non-Accrual Loans, Segregated by Class of Loan and Year of Origination) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | $ 61,449 | $ 102,303 |
Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,397,141 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 608,464 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 343,825 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 258,737 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 121,652 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 119,250 | |
Financing Receivable, Revolving | 2,019,121 | |
Non-accrual loans | 19,849 | 26,038 |
Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 524,270 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 48,853 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 16,310 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 8,083 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,174 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 5,346 | |
Financing Receivable, Revolving | 592,094 | |
Non-accrual loans | 23,168 | 65,761 |
Paycheck Protection Program [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | 0 |
Commercial Real Estate, Buildings, Land and Other [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,629,815 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,086,073 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 883,701 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 764,197 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 495,617 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 804,894 | |
Financing Receivable, Revolving | 74,403 | |
Non-accrual loans | 15,737 | 8,912 |
Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 420,477 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 452,644 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 196,170 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 2,915 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,144 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,758 | |
Financing Receivable, Revolving | 147,575 | |
Non-accrual loans | 1,684 | 665 |
Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 993 | 922 |
Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 18 | $ 5 |
Nonperforming Financial Instruments [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 16,498 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 15,154 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 4,989 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 3,719 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,038 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 3,532 | |
Financing Receivable, Revolving | 12,414 | |
Financing Receivable, Revolving, Converted to Term Loan | 3,105 | |
Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 9,479 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3,351 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,846 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,489 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 105 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 29 | |
Financing Receivable, Revolving | 839 | |
Financing Receivable, Revolving, Converted to Term Loan | 2,711 | |
Nonperforming Financial Instruments [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 2,421 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 6,772 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 2,144 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 359 | |
Financing Receivable, Revolving | 11,193 | |
Financing Receivable, Revolving, Converted to Term Loan | 279 | |
Nonperforming Financial Instruments [Member] | Paycheck Protection Program [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 0 | |
Financing Receivable, Revolving, Converted to Term Loan | 0 | |
Nonperforming Financial Instruments [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 2,914 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 5,031 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 999 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 2,019 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,933 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,736 | |
Financing Receivable, Revolving | 105 | |
Financing Receivable, Revolving, Converted to Term Loan | 0 | |
Nonperforming Financial Instruments [Member] | Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,684 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 0 | |
Financing Receivable, Revolving, Converted to Term Loan | 0 | |
Nonperforming Financial Instruments [Member] | Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 211 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 408 | |
Financing Receivable, Revolving | 259 | |
Financing Receivable, Revolving, Converted to Term Loan | 115 | |
Nonperforming Financial Instruments [Member] | Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 18 | |
Financing Receivable, Revolving, Converted to Term Loan | $ 0 |
Loans (Age Analysis of Past Due
Loans (Age Analysis of Past Due Loans, Segregated by Class of Loans) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | $ 128,317 | |
Current Loans | 17,352,992 | |
Total loans | 17,481,309 | $ 14,750,332 |
Accruing Loans 90 or More Days Past Due | 14,288 | |
Commercial Portfolio Segment [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 55,032 | |
Current Loans | 4,900,309 | |
Total loans | 4,955,341 | 5,187,466 |
Accruing Loans 90 or More Days Past Due | 5,615 | |
Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 26,070 | |
Current Loans | 1,209,128 | |
Total loans | 1,235,198 | 1,652,882 |
Accruing Loans 90 or More Days Past Due | 3,696 | |
Paycheck Protection Program [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 0 | |
Current Loans | 2,433,849 | |
Total loans | 2,433,849 | 0 |
Accruing Loans 90 or More Days Past Due | 0 | |
Commercial Real Estate, Buildings, Land and Other [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 28,434 | |
Current Loans | 5,768,219 | |
Total loans | 5,796,653 | 4,883,580 |
Accruing Loans 90 or More Days Past Due | 1,275 | |
Construction Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 856 | |
Current Loans | 1,222,958 | |
Total loans | 1,223,814 | 1,312,659 |
Accruing Loans 90 or More Days Past Due | 0 | |
Total consumer real estate loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 11,137 | |
Current Loans | 1,319,637 | |
Total loans | 1,330,774 | 1,194,413 |
Accruing Loans 90 or More Days Past Due | 2,469 | |
Consumer Loan [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 6,788 | |
Current Loans | 498,892 | |
Total loans | 505,680 | $ 519,332 |
Accruing Loans 90 or More Days Past Due | 1,233 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 96,862 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 45,416 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 14,833 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Paycheck Protection Program [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 0 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 22,130 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Construction Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 856 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 8,090 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 5,537 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 31,455 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 9,616 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 11,237 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Paycheck Protection Program [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 0 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 6,304 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 0 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 3,047 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | $ 1,251 |
Loans (Impaired Loans) (Detail)
Loans (Impaired Loans) (Detail) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Unpaid Contractual Principal Balance | $ 128,536 | |
Recorded Investment With No Allowance | 21,842 | |
Recorded Investment With Allowance | 77,611 | |
Total Recorded Investment | 99,453 | |
Related Allowance | 28,483 | |
Average Recorded Investment | 84,352 | $ 108,127 |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Unpaid Contractual Principal Balance | 30,909 | |
Recorded Investment With No Allowance | 11,588 | |
Recorded Investment With Allowance | 12,772 | |
Total Recorded Investment | 24,360 | |
Related Allowance | 7,849 | |
Average Recorded Investment | 14,913 | 18,246 |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Unpaid Contractual Principal Balance | 87,103 | |
Recorded Investment With No Allowance | 2,764 | |
Recorded Investment With Allowance | 62,480 | |
Total Recorded Investment | 65,244 | |
Related Allowance | 20,246 | |
Average Recorded Investment | 53,563 | 75,453 |
Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Unpaid Contractual Principal Balance | 9,252 | |
Recorded Investment With No Allowance | 6,255 | |
Recorded Investment With Allowance | 2,354 | |
Total Recorded Investment | 8,609 | |
Related Allowance | 383 | |
Average Recorded Investment | 13,690 | 12,799 |
Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Unpaid Contractual Principal Balance | 697 | |
Recorded Investment With No Allowance | 665 | |
Recorded Investment With Allowance | 0 | |
Total Recorded Investment | 665 | |
Related Allowance | 0 | |
Average Recorded Investment | 354 | 0 |
Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Unpaid Contractual Principal Balance | 570 | |
Recorded Investment With No Allowance | 570 | |
Recorded Investment With Allowance | 0 | |
Total Recorded Investment | 570 | |
Related Allowance | 0 | |
Average Recorded Investment | 547 | 704 |
Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Unpaid Contractual Principal Balance | 5 | |
Recorded Investment With No Allowance | 0 | |
Recorded Investment With Allowance | 5 | |
Total Recorded Investment | 5 | |
Related Allowance | 5 | |
Average Recorded Investment | $ 1,285 | $ 925 |
Loans (Troubled Debt Restructur
Loans (Troubled Debt Restructurings) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Financing Receivable, Troubled Debt Restructuring [Line Items] | |||
Balance at Restructure | $ 17,524 | $ 13,426 | $ 15,911 |
Balance at Year-end | 8,552 | 11,674 | 0 |
Commercial Portfolio Segment [Member] | |||
Financing Receivable, Troubled Debt Restructuring [Line Items] | |||
Balance at Restructure | 3,661 | 3,845 | 2,203 |
Balance at Year-end | 192 | 2,161 | 0 |
Commercial and Industrial Total Energy Loans [Member] | |||
Financing Receivable, Troubled Debt Restructuring [Line Items] | |||
Balance at Restructure | 2,432 | 0 | 13,708 |
Balance at Year-end | 2,421 | 0 | 0 |
Commercial Real Estate, Buildings, Land and Other [Member] | |||
Financing Receivable, Troubled Debt Restructuring [Line Items] | |||
Balance at Restructure | 9,310 | 9,457 | 0 |
Balance at Year-end | 4,922 | 9,393 | 0 |
Construction Loans [Member] | |||
Financing Receivable, Troubled Debt Restructuring [Line Items] | |||
Balance at Restructure | 1,017 | 0 | 0 |
Balance at Year-end | 1,017 | 0 | 0 |
Total consumer real estate loans [Member] | |||
Financing Receivable, Troubled Debt Restructuring [Line Items] | |||
Balance at Restructure | 0 | 124 | 0 |
Balance at Year-end | 0 | 120 | 0 |
Consumer Loan [Member] | |||
Financing Receivable, Troubled Debt Restructuring [Line Items] | |||
Balance at Restructure | 1,104 | 0 | 0 |
Balance at Year-end | $ 0 | $ 0 | $ 0 |
Loans Loans (Restructured Loans
Loans Loans (Restructured Loans Past Due in Excess of 90 Days) (Details) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020USD ($)Item | Dec. 31, 2019USD ($)Item | Dec. 31, 2018USD ($)Item | |
Financing Receivable, Troubled Debt Restructuring [Line Items] | |||
Number Of restructured loans past due in excess of 90 days at period-end | Item | 1 | 4 | 0 |
Dollar amount of loans previously restructured during the last year in excess of 90 days past due | $ 2,008 | $ 3,340 | $ 0 |
Restructured loans on non-accrual status at period end | 8,552 | 5,576 | 0 |
Chare-offs of restrucured loans recognized in connection with restructuring | 337 | 0 | 0 |
Charge-offs of restructured loans recognized on previously restructured loans | 3,894 | 1,500 | 7,650 |
Proceeds from sale of restructured loans | $ 0 | $ 0 | $ 15,750 |
Loans (Weighted Average Risk Gr
Loans (Weighted Average Risk Grades for All Commercial Loans by Class) (Detail) $ in Thousands | Dec. 31, 2020USD ($)Grade | Dec. 31, 2019USD ($)Grade |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 17,481,309 | $ 14,750,332 |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,397,141 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 608,464 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 343,825 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 258,737 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 121,652 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 119,250 | |
Financing Receivable, Revolving | 2,019,121 | |
Loans, net of unearned discounts | $ 4,955,341 | $ 5,187,466 |
Weighted Average Risk Grade | Grade | 6.45 | 6.44 |
Commercial Portfolio Segment [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.38 | |
Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 87,151 | |
Weighted Average Risk Grade | Grade | 7.51 | |
Commercial Portfolio Segment [Member] | 2020 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.19 | |
Commercial Portfolio Segment [Member] | 2019 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.88 | |
Commercial Portfolio Segment [Member] | 2018 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.22 | |
Commercial Portfolio Segment [Member] | 2017 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.39 | |
Commercial Portfolio Segment [Member] | 2016 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.32 | |
Commercial Portfolio Segment [Member] | Prior Years | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 5.84 | |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 524,270 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 48,853 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 16,310 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 8,083 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,174 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 5,346 | |
Financing Receivable, Revolving | 592,094 | |
Loans, net of unearned discounts | $ 1,235,198 | $ 1,652,882 |
Weighted Average Risk Grade | Grade | 6.85 | 6.39 |
Commercial and Industrial Total Energy Loans [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.45 | |
Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 38,068 | |
Weighted Average Risk Grade | Grade | 8.20 | |
Commercial and Industrial Total Energy Loans [Member] | 2020 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.86 | |
Commercial and Industrial Total Energy Loans [Member] | 2019 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9.57 | |
Commercial and Industrial Total Energy Loans [Member] | 2018 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 8.68 | |
Commercial and Industrial Total Energy Loans [Member] | 2017 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.40 | |
Commercial and Industrial Total Energy Loans [Member] | 2016 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.85 | |
Commercial and Industrial Total Energy Loans [Member] | Prior Years | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 8.06 | |
Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,629,815 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,086,073 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 883,701 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 764,197 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 495,617 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 804,894 | |
Financing Receivable, Revolving | 74,403 | |
Loans, net of unearned discounts | $ 5,796,653 | $ 4,883,580 |
Weighted Average Risk Grade | Grade | 7.34 | 7.01 |
Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.54 | |
Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 57,953 | |
Weighted Average Risk Grade | Grade | 7.12 | |
Commercial Real Estate, Buildings, Land and Other [Member] | 2020 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.13 | |
Commercial Real Estate, Buildings, Land and Other [Member] | 2019 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.36 | |
Commercial Real Estate, Buildings, Land and Other [Member] | 2018 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.54 | |
Commercial Real Estate, Buildings, Land and Other [Member] | 2017 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.55 | |
Commercial Real Estate, Buildings, Land and Other [Member] | 2016 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.54 | |
Commercial Real Estate, Buildings, Land and Other [Member] | Prior Years | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.20 | |
Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 420,477 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 452,644 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 196,170 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 2,915 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,144 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,758 | |
Financing Receivable, Revolving | 147,575 | |
Loans, net of unearned discounts | $ 1,223,814 | $ 1,312,659 |
Weighted Average Risk Grade | Grade | 7.22 | 7.31 |
Construction Loans [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.29 | |
Construction Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 1,131 | |
Weighted Average Risk Grade | Grade | 9 | |
Construction Loans [Member] | 2020 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.82 | |
Construction Loans [Member] | 2019 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.18 | |
Construction Loans [Member] | 2018 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 8.08 | |
Construction Loans [Member] | 2017 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 8.95 | |
Construction Loans [Member] | 2016 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.30 | |
Construction Loans [Member] | Prior Years | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.44 | |
Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 2,050,292 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,538,717 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,079,871 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 767,112 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 496,761 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 806,652 | |
Financing Receivable, Revolving | 221,978 | |
Loans, net of unearned discounts | $ 7,020,467 | $ 6,196,239 |
Weighted Average Risk Grade | Grade | 7.32 | 7.07 |
Commercial Real Estate Portfolio Segment [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.37 | |
Commercial Real Estate Portfolio Segment [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 59,084 | |
Weighted Average Risk Grade | Grade | 7.15 | |
Commercial Real Estate Portfolio Segment [Member] | 2020 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.06 | |
Commercial Real Estate Portfolio Segment [Member] | 2019 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.31 | |
Commercial Real Estate Portfolio Segment [Member] | 2018 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.64 | |
Commercial Real Estate Portfolio Segment [Member] | 2017 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.56 | |
Commercial Real Estate Portfolio Segment [Member] | 2016 | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.54 | |
Commercial Real Estate Portfolio Segment [Member] | Prior Years | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.20 | |
Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,300,844 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 552,885 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 290,088 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 226,232 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 107,063 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 113,458 | |
Financing Receivable, Revolving | 1,852,341 | |
Loans, net of unearned discounts | $ 4,506,121 | $ 4,788,857 |
Weighted Average Risk Grade | Grade | 6.13 | 6.17 |
Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 63,210 | |
Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 403,156 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 18,911 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 9,759 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 8,083 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,415 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 4,326 | |
Financing Receivable, Revolving | 494,946 | |
Loans, net of unearned discounts | $ 968,144 | $ 1,488,301 |
Weighted Average Risk Grade | Grade | 5.99 | 5.90 |
Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 27,548 | |
Risk Grade One To Eight [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,544,558 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 947,102 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 749,879 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 605,152 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 432,941 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 661,301 | |
Financing Receivable, Revolving | 56,600 | |
Loans, net of unearned discounts | $ 5,047,873 | $ 4,523,271 |
Weighted Average Risk Grade | Grade | 6.97 | 6.78 |
Risk Grade One To Eight [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 50,340 | |
Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 374,661 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 436,077 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 168,517 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 67 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,144 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,758 | |
Financing Receivable, Revolving | 127,801 | |
Loans, net of unearned discounts | $ 1,110,025 | $ 1,274,098 |
Weighted Average Risk Grade | Grade | 6.99 | 7.25 |
Risk Grade One To Eight [Member] | Construction Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 0 | |
Risk Grade One To Eight [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 5,797,369 | |
Weighted Average Risk Grade | Grade | 6.88 | |
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 50,785 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 37,865 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 33,961 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 20,851 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 12,348 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 5,510 | |
Financing Receivable, Revolving | 85,756 | |
Loans, net of unearned discounts | 256,198 | $ 247,212 |
Weighted Average Risk Grade | Grade | 9 | |
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 9,122 | |
Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 105,772 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,272 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,743 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 18,194 | |
Loans, net of unearned discounts | 133,547 | $ 32,163 |
Weighted Average Risk Grade | Grade | 9 | |
Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 5,566 | |
Risk Grade Nine [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 45,527 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 81,224 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 75,893 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 45,485 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 26,745 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 37,728 | |
Financing Receivable, Revolving | 10,521 | |
Loans, net of unearned discounts | 325,227 | $ 163,714 |
Weighted Average Risk Grade | Grade | 9 | |
Risk Grade Nine [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 2,104 | |
Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 37,430 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 16,567 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 2,848 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 14,311 | |
Loans, net of unearned discounts | 72,287 | $ 21,509 |
Weighted Average Risk Grade | Grade | 9 | |
Risk Grade Nine [Member] | Construction Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 1,131 | |
Risk Grade Nine [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 185,223 | |
Weighted Average Risk Grade | Grade | 9 | |
Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 31,333 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 7,361 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 11,379 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 6,749 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 710 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 113 | |
Financing Receivable, Revolving | 65,180 | |
Loans, net of unearned discounts | 125,977 | $ 71,472 |
Weighted Average Risk Grade | Grade | 10 | |
Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 3,152 | |
Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 703 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 4,049 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,339 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 759 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 37,637 | |
Loans, net of unearned discounts | 46,427 | $ 51,898 |
Weighted Average Risk Grade | Grade | 10 | |
Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 1,940 | |
Risk Grade Ten [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 14,183 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 36,414 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 45,014 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 71,814 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 25,343 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 60,225 | |
Financing Receivable, Revolving | 200 | |
Loans, net of unearned discounts | 258,454 | $ 103,626 |
Weighted Average Risk Grade | Grade | 10 | |
Risk Grade Ten [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 5,261 | |
Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 5,846 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 27,653 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 5,463 | |
Loans, net of unearned discounts | 38,962 | $ 15,243 |
Weighted Average Risk Grade | Grade | 10 | |
Risk Grade Ten [Member] | Construction Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 0 | |
Risk Grade Ten [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 118,869 | |
Weighted Average Risk Grade | Grade | 10 | |
Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 4,700 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 7,002 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 6,551 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 3,416 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,426 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 140 | |
Financing Receivable, Revolving | 15,005 | |
Loans, net of unearned discounts | 47,196 | $ 53,887 |
Weighted Average Risk Grade | Grade | 11 | |
Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 8,956 | |
Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 12,218 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 16,849 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,325 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 661 | |
Financing Receivable, Revolving | 30,124 | |
Loans, net of unearned discounts | 63,912 | $ 14,760 |
Weighted Average Risk Grade | Grade | 11 | |
Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 2,735 | |
Risk Grade Eleven [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 22,633 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 16,302 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 11,916 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 39,727 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 8,655 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 42,904 | |
Financing Receivable, Revolving | 6,977 | |
Loans, net of unearned discounts | 149,362 | $ 84,057 |
Weighted Average Risk Grade | Grade | 11 | |
Risk Grade Eleven [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 248 | |
Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 856 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 0 | |
Loans, net of unearned discounts | 856 | $ 1,144 |
Weighted Average Risk Grade | Grade | 11 | |
Risk Grade Eleven [Member] | Construction Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 0 | |
Risk Grade Eleven [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 85,201 | |
Weighted Average Risk Grade | Grade | 11 | |
Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 6,899 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,399 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,195 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,005 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 105 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 29 | |
Financing Receivable, Revolving | 480 | |
Loans, net of unearned discounts | 14,528 | $ 18,189 |
Weighted Average Risk Grade | Grade | 12 | |
Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 2,416 | |
Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,101 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 4,580 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 654 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 359 | |
Financing Receivable, Revolving | 6,768 | |
Loans, net of unearned discounts | 13,741 | $ 45,514 |
Weighted Average Risk Grade | Grade | 12 | |
Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 279 | |
Risk Grade Twelve [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 2,714 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 5,031 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 999 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 2,019 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,683 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,736 | |
Financing Receivable, Revolving | 42 | |
Loans, net of unearned discounts | 15,224 | $ 8,529 |
Weighted Average Risk Grade | Grade | 12 | |
Risk Grade Twelve [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 0 | |
Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,684 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 0 | |
Loans, net of unearned discounts | 1,684 | $ 665 |
Weighted Average Risk Grade | Grade | 12 | |
Risk Grade Twelve [Member] | Construction Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 0 | |
Risk Grade Twelve [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 9,194 | |
Weighted Average Risk Grade | Grade | 12 | |
Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 2,580 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 952 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 651 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 484 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 359 | |
Loans, net of unearned discounts | 5,321 | $ 7,849 |
Weighted Average Risk Grade | Grade | 13 | |
Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 295 | |
Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,320 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,192 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,490 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 4,425 | |
Loans, net of unearned discounts | 9,427 | $ 20,246 |
Weighted Average Risk Grade | Grade | 13 | |
Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 0 | |
Risk Grade Thirteen [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 200 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 250 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 63 | |
Loans, net of unearned discounts | 513 | $ 383 |
Weighted Average Risk Grade | Grade | 13 | |
Risk Grade Thirteen [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | 0 | |
Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | |
Financing Receivable, Revolving | 0 | |
Loans, net of unearned discounts | 0 | $ 0 |
Weighted Average Risk Grade | Grade | 13 | |
Risk Grade Thirteen [Member] | Construction Loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Financing Receivable, Revolving, Converted to Term Loan | $ 0 | |
Risk Grade Thirteen [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 383 | |
Weighted Average Risk Grade | Grade | 13 |
Loans (Net (Charge-Offs)_Recove
Loans (Net (Charge-Offs)/Recoveries, Segregated by Class of Loans) (Detail) $ in Thousands | Dec. 31, 2020USD ($)Grade | Dec. 31, 2019USD ($)Grade |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 17,481,309 | $ 14,750,332 |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.45 | 6.44 |
Loans, net of unearned discounts | $ 4,955,341 | $ 5,187,466 |
Commercial Portfolio Segment [Member] | Risk Grade One To Eight [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.13 | 6.17 |
Loans, net of unearned discounts | $ 4,506,121 | $ 4,788,857 |
Commercial Portfolio Segment [Member] | Risk Grade Nine [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | |
Loans, net of unearned discounts | 256,198 | $ 247,212 |
Commercial Portfolio Segment [Member] | Risk Grade Ten [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | |
Loans, net of unearned discounts | 125,977 | $ 71,472 |
Commercial Portfolio Segment [Member] | Risk Grade Eleven [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | |
Loans, net of unearned discounts | 47,196 | $ 53,887 |
Commercial Portfolio Segment [Member] | Risk Grade Twelve [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | |
Loans, net of unearned discounts | 14,528 | $ 18,189 |
Commercial Portfolio Segment [Member] | Risk Grade Thirteen [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | |
Loans, net of unearned discounts | $ 5,321 | $ 7,849 |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.85 | 6.39 |
Loans, net of unearned discounts | $ 1,235,198 | $ 1,652,882 |
Commercial and Industrial Total Energy Loans [Member] | Risk Grade One To Eight [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 5.99 | 5.90 |
Loans, net of unearned discounts | $ 968,144 | $ 1,488,301 |
Commercial and Industrial Total Energy Loans [Member] | Risk Grade Nine [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | |
Loans, net of unearned discounts | 133,547 | $ 32,163 |
Commercial and Industrial Total Energy Loans [Member] | Risk Grade Ten [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | |
Loans, net of unearned discounts | 46,427 | $ 51,898 |
Commercial and Industrial Total Energy Loans [Member] | Risk Grade Eleven [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | |
Loans, net of unearned discounts | 63,912 | $ 14,760 |
Commercial and Industrial Total Energy Loans [Member] | Risk Grade Twelve [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | |
Loans, net of unearned discounts | 13,741 | $ 45,514 |
Commercial and Industrial Total Energy Loans [Member] | Risk Grade Thirteen [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | |
Loans, net of unearned discounts | $ 9,427 | $ 20,246 |
Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.34 | 7.01 |
Loans, net of unearned discounts | $ 5,796,653 | $ 4,883,580 |
Commercial Real Estate, Buildings, Land and Other [Member] | Risk Grade One To Eight [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.97 | 6.78 |
Loans, net of unearned discounts | $ 5,047,873 | $ 4,523,271 |
Commercial Real Estate, Buildings, Land and Other [Member] | Risk Grade Nine [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | |
Loans, net of unearned discounts | 325,227 | $ 163,714 |
Commercial Real Estate, Buildings, Land and Other [Member] | Risk Grade Ten [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | |
Loans, net of unearned discounts | 258,454 | $ 103,626 |
Commercial Real Estate, Buildings, Land and Other [Member] | Risk Grade Eleven [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | |
Loans, net of unearned discounts | 149,362 | $ 84,057 |
Commercial Real Estate, Buildings, Land and Other [Member] | Risk Grade Twelve [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | |
Loans, net of unearned discounts | 15,224 | $ 8,529 |
Commercial Real Estate, Buildings, Land and Other [Member] | Risk Grade Thirteen [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | |
Loans, net of unearned discounts | $ 513 | $ 383 |
Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.22 | 7.31 |
Loans, net of unearned discounts | $ 1,223,814 | $ 1,312,659 |
Construction Loans [Member] | Risk Grade One To Eight [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.99 | 7.25 |
Loans, net of unearned discounts | $ 1,110,025 | $ 1,274,098 |
Construction Loans [Member] | Risk Grade Nine [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | |
Loans, net of unearned discounts | 72,287 | $ 21,509 |
Construction Loans [Member] | Risk Grade Ten [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | |
Loans, net of unearned discounts | 38,962 | $ 15,243 |
Construction Loans [Member] | Risk Grade Eleven [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | |
Loans, net of unearned discounts | 856 | $ 1,144 |
Construction Loans [Member] | Risk Grade Twelve [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | |
Loans, net of unearned discounts | 1,684 | $ 665 |
Construction Loans [Member] | Risk Grade Thirteen [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | |
Loans, net of unearned discounts | $ 0 | $ 0 |
Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.32 | 7.07 |
Loans, net of unearned discounts | $ 7,020,467 | $ 6,196,239 |
Commercial Real Estate Portfolio Segment [Member] | Risk Grade One To Eight [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.88 | |
Loans, net of unearned discounts | $ 5,797,369 | |
Commercial Real Estate Portfolio Segment [Member] | Risk Grade Nine [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | |
Loans, net of unearned discounts | $ 185,223 | |
Commercial Real Estate Portfolio Segment [Member] | Risk Grade Ten [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | |
Loans, net of unearned discounts | $ 118,869 | |
Commercial Real Estate Portfolio Segment [Member] | Risk Grade Eleven [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | |
Loans, net of unearned discounts | $ 85,201 | |
Commercial Real Estate Portfolio Segment [Member] | Risk Grade Twelve [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | |
Loans, net of unearned discounts | $ 9,194 | |
Commercial Real Estate Portfolio Segment [Member] | Risk Grade Thirteen [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | |
Loans, net of unearned discounts | $ 383 |
Loans (Age Analysis of Past D_2
Loans (Age Analysis of Past Due Consumer Loans, Segregated By Class and Year of Origination) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | $ 128,317 | |
Current Loans | 17,352,992 | |
Loans, net of unearned discounts | 17,481,309 | $ 14,750,332 |
Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 96,862 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 31,455 | |
Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 11,137 | |
Current Loans | 1,319,637 | |
Loans, net of unearned discounts | 1,330,774 | 1,194,413 |
Total consumer real estate loans [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,267 | |
Current Loans | 434,939 | |
Loans, net of unearned discounts | 436,206 | |
Total consumer real estate loans [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 682 | |
Current Loans | 16,104 | |
Loans, net of unearned discounts | 16,786 | |
Total consumer real estate loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 8,090 | |
Total consumer real estate loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 652 | |
Total consumer real estate loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 531 | |
Total consumer real estate loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 3,047 | |
Total consumer real estate loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 615 | |
Total consumer real estate loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 151 | |
Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 6,788 | |
Current Loans | 498,892 | |
Loans, net of unearned discounts | 505,680 | $ 519,332 |
Consumer Loan [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 3,269 | |
Current Loans | 386,791 | |
Loans, net of unearned discounts | 390,060 | |
Consumer Loan [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 748 | |
Current Loans | 28,529 | |
Loans, net of unearned discounts | 29,277 | |
Consumer Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 5,537 | |
Consumer Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 2,238 | |
Consumer Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 727 | |
Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,251 | |
Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Revolving Credit Facility | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,031 | |
Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Revolving Loans Converted to Term | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 21 | |
2020 | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 240 | |
Current Loans | 336,441 | |
Loans, net of unearned discounts | 336,681 | |
2020 | Total consumer real estate loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 225 | |
2020 | Total consumer real estate loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 15 | |
2020 | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,821 | |
Current Loans | 45,286 | |
Loans, net of unearned discounts | 47,107 | |
2020 | Consumer Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,750 | |
2020 | Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 71 | |
2019 | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,177 | |
Current Loans | 166,323 | |
Loans, net of unearned discounts | 167,500 | |
2019 | Total consumer real estate loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,038 | |
2019 | Total consumer real estate loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 139 | |
2019 | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 310 | |
Current Loans | 27,813 | |
Loans, net of unearned discounts | 28,123 | |
2019 | Consumer Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 300 | |
2019 | Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 10 | |
2018 | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,665 | |
Current Loans | 94,374 | |
Loans, net of unearned discounts | 96,039 | |
2018 | Total consumer real estate loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,556 | |
2018 | Total consumer real estate loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 109 | |
2018 | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 571 | |
Current Loans | 5,397 | |
Loans, net of unearned discounts | 5,968 | |
2018 | Consumer Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 453 | |
2018 | Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 118 | |
2017 | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,259 | |
Current Loans | 80,625 | |
Loans, net of unearned discounts | 81,884 | |
2017 | Total consumer real estate loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 553 | |
2017 | Total consumer real estate loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 706 | |
2017 | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 52 | |
Current Loans | 2,799 | |
Loans, net of unearned discounts | 2,851 | |
2017 | Consumer Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 52 | |
2017 | Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
2016 | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 653 | |
Current Loans | 66,241 | |
Loans, net of unearned discounts | 66,894 | |
2016 | Total consumer real estate loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 628 | |
2016 | Total consumer real estate loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 25 | |
2016 | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 17 | |
Current Loans | 1,705 | |
Loans, net of unearned discounts | 1,722 | |
2016 | Consumer Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 17 | |
2016 | Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
Prior Years | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 4,194 | |
Current Loans | 124,590 | |
Loans, net of unearned discounts | 128,784 | |
Prior Years | Total consumer real estate loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 2,907 | |
Prior Years | Total consumer real estate loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,287 | |
Prior Years | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
Current Loans | 572 | |
Loans, net of unearned discounts | 572 | |
Prior Years | Consumer Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
Prior Years | Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | $ 0 |
Loans (Revolving Loans Converte
Loans (Revolving Loans Converted to Term) (Details) - Revolving Loans Converted to Term $ in Thousands | 12 Months Ended |
Dec. 31, 2020USD ($) | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Remaining Revolving Loans Converted to Term During Period | $ 111,007 |
Commercial Portfolio Segment [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Remaining Revolving Loans Converted to Term During Period | 47,562 |
Commercial and Industrial Total Energy Loans [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Remaining Revolving Loans Converted to Term During Period | 33,150 |
Commercial Real Estate, Buildings, Land and Other [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Remaining Revolving Loans Converted to Term During Period | 10,505 |
Construction Loans [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Remaining Revolving Loans Converted to Term During Period | 1,131 |
Total consumer real estate loans [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Remaining Revolving Loans Converted to Term During Period | 2,264 |
Consumer Loan [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Remaining Revolving Loans Converted to Term During Period | $ 16,395 |
Loans (Allowance for Credit Los
Loans (Allowance for Credit Loss By Loan Class Calculated in Accordance With CECL Methodology) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 |
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | $ 263,177 | $ 132,167 | ||
Commercial Portfolio Segment [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 73,843 | 51,593 | $ 48,580 | $ 59,614 |
Commercial and Industrial Total Energy Loans [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 39,553 | 37,382 | 29,052 | 51,528 |
Commercial Real Estate Portfolio Segment [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 134,892 | 31,037 | 38,777 | 30,948 |
Total consumer real estate loans [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 7,926 | 4,113 | 6,103 | 5,657 |
Consumer Loan [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 6,963 | 8,042 | 9,620 | 7,617 |
Loans Receivable [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 263,177 | $ 132,167 | $ 132,132 | $ 155,364 |
Modeled Expected Credit Losses [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 214,552 | |||
Modeled Expected Credit Losses [Member] | Commercial Portfolio Segment [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 65,645 | |||
Modeled Expected Credit Losses [Member] | Commercial and Industrial Total Energy Loans [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 8,910 | |||
Modeled Expected Credit Losses [Member] | Commercial Real Estate Portfolio Segment [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 125,126 | |||
Modeled Expected Credit Losses [Member] | Total consumer real estate loans [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 7,926 | |||
Modeled Expected Credit Losses [Member] | Consumer Loan [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 6,945 | |||
Q-factor adjustments [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 33,346 | |||
Q-factor adjustments [Member] | Commercial Portfolio Segment [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 2,877 | |||
Q-factor adjustments [Member] | Commercial and Industrial Total Energy Loans [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 21,216 | |||
Q-factor adjustments [Member] | Commercial Real Estate Portfolio Segment [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 9,253 | |||
Q-factor adjustments [Member] | Total consumer real estate loans [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 0 | |||
Q-factor adjustments [Member] | Consumer Loan [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 0 | |||
Specific Valuation Allowances [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 15,279 | |||
Specific Valuation Allowances [Member] | Commercial Portfolio Segment [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 5,321 | |||
Specific Valuation Allowances [Member] | Commercial and Industrial Total Energy Loans [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 9,427 | |||
Specific Valuation Allowances [Member] | Commercial Real Estate Portfolio Segment [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 513 | |||
Specific Valuation Allowances [Member] | Total consumer real estate loans [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 0 | |||
Specific Valuation Allowances [Member] | Consumer Loan [Member] | ||||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | $ 18 |
Loans (Allowance for Credit L_2
Loans (Allowance for Credit Losses By Loan Class in Accordance With Methodology Used Prior to CECL) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | $ 132,167 | |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 51,593 | |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 37,382 | |
Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 31,037 | |
Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 4,113 | |
Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 8,042 | |
Historical Valuation Allowances [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 69,087 | |
Historical Valuation Allowances [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 29,015 | |
Historical Valuation Allowances [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 7,873 | |
Historical Valuation Allowances [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 21,947 | |
Historical Valuation Allowances [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 2,690 | |
Historical Valuation Allowances [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 7,562 | |
Specific Valuation Allowances [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | $ 15,279 | 28,483 |
Specific Valuation Allowances [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 5,321 | 7,849 |
Specific Valuation Allowances [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 9,427 | 20,246 |
Specific Valuation Allowances [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 383 | |
Specific Valuation Allowances [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 0 | 0 |
Specific Valuation Allowances [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | $ 18 | 5 |
General Valuation Allowances [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 19,732 | |
General Valuation Allowances [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 9,840 | |
General Valuation Allowances [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 5,196 | |
General Valuation Allowances [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 4,201 | |
General Valuation Allowances [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 904 | |
General Valuation Allowances [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | (409) | |
Macroeconomic Valuation Allowances [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 14,865 | |
Macroeconomic Valuation Allowances [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 4,889 | |
Macroeconomic Valuation Allowances [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 4,067 | |
Macroeconomic Valuation Allowances [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 4,506 | |
Macroeconomic Valuation Allowances [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 519 | |
Macroeconomic Valuation Allowances [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | $ 884 |
Loans (Activity in Allowance fo
Loans (Activity in Allowance for Loan Losses by Portfolio Segment) (Detail) - USD ($) $ in Thousands | 12 Months Ended | |||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | $ 263,177 | $ 132,167 | ||
Impact of New Accounting Pronouncement | 39,377 | 0 | $ 0 | |
Commercial Portfolio Segment [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 73,843 | 51,593 | 48,580 | $ 59,614 |
Impact of New Accounting Pronouncement | 21,263 | |||
Financing Receivable, Credit Loss, Expense (Reversal) | 15,156 | 13,144 | 11,354 | |
Financing Receivable, Allowance for Credit Loss, Writeoff | (18,908) | (14,117) | (26,076) | |
Financing Receivable, Allowance for Credit Loss, Recovery | 4,739 | 3,986 | 3,688 | |
Allowance for Loan and Lease Losses Write-offs, Net | (14,169) | (10,131) | (22,388) | |
Commercial And Industrial Energy Financing Receivable [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 39,553 | 37,382 | 29,052 | 51,528 |
Impact of New Accounting Pronouncement | (10,453) | |||
Financing Receivable, Credit Loss, Expense (Reversal) | 85,889 | 14,388 | (9,355) | |
Financing Receivable, Allowance for Credit Loss, Writeoff | (76,107) | (7,500) | (13,940) | |
Financing Receivable, Allowance for Credit Loss, Recovery | 2,842 | 1,442 | 819 | |
Allowance for Loan and Lease Losses Write-offs, Net | (73,265) | (6,058) | (13,121) | |
Commercial Real Estate Portfolio Segment [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 134,892 | 31,037 | 38,777 | 30,948 |
Impact of New Accounting Pronouncement | (13,519) | |||
Financing Receivable, Credit Loss, Expense (Reversal) | 124,427 | (6,934) | 8,079 | |
Financing Receivable, Allowance for Credit Loss, Writeoff | (7,499) | (1,025) | (619) | |
Financing Receivable, Allowance for Credit Loss, Recovery | 446 | 219 | 369 | |
Allowance for Loan and Lease Losses Write-offs, Net | (7,053) | (806) | (250) | |
Total consumer real estate loans [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 7,926 | 4,113 | 6,103 | 5,657 |
Impact of New Accounting Pronouncement | 2,392 | |||
Financing Receivable, Credit Loss, Expense (Reversal) | 1,906 | 467 | 1,984 | |
Financing Receivable, Allowance for Credit Loss, Writeoff | (2,186) | (3,665) | (2,143) | |
Financing Receivable, Allowance for Credit Loss, Recovery | 1,701 | 1,208 | 605 | |
Allowance for Loan and Lease Losses Write-offs, Net | (485) | (2,457) | (1,538) | |
Consumer Loan [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 6,963 | 8,042 | 9,620 | 7,617 |
Impact of New Accounting Pronouncement | (2,248) | |||
Financing Receivable, Credit Loss, Expense (Reversal) | 9,632 | 12,694 | 9,551 | |
Financing Receivable, Allowance for Credit Loss, Writeoff | (17,830) | (24,725) | (17,197) | |
Financing Receivable, Allowance for Credit Loss, Recovery | 9,367 | 10,453 | 9,649 | |
Allowance for Loan and Lease Losses Write-offs, Net | (8,463) | (14,272) | (7,548) | |
Loans Receivable [Member] | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Financing Receivable, Allowance for Credit Loss | 263,177 | 132,167 | 132,132 | $ 155,364 |
Impact of New Accounting Pronouncement | (2,565) | |||
Financing Receivable, Credit Loss, Expense (Reversal) | 237,010 | 33,759 | 21,613 | |
Financing Receivable, Allowance for Credit Loss, Writeoff | (122,530) | (51,032) | (59,975) | |
Financing Receivable, Allowance for Credit Loss, Recovery | 19,095 | 17,308 | 15,130 | |
Allowance for Loan and Lease Losses Write-offs, Net | $ (103,435) | $ (33,724) | $ (44,845) |
Loans (Investment in Loans Rela
Loans (Investment in Loans Related to Allowance for Loan Loss by Portfolio Segment Disaggregated Based on Impairment Methodology) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | $ 17,481,309 | $ 14,750,332 |
Portion of allowance for loan losses | 132,167 | |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 4,955,341 | 5,187,466 |
Portion of allowance for loan losses | 51,593 | |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 1,235,198 | 1,652,882 |
Portion of allowance for loan losses | 37,382 | |
Paycheck Protection Program [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 2,433,849 | 0 |
Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 5,796,653 | 4,883,580 |
Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 1,223,814 | 1,312,659 |
Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 1,330,774 | 1,194,413 |
Portion of allowance for loan losses | 4,113 | |
Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 505,680 | 519,332 |
Portion of allowance for loan losses | 8,042 | |
Specific Valuation Allowances [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 15,279 | 28,483 |
Specific Valuation Allowances [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 5,321 | 7,849 |
Specific Valuation Allowances [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 9,427 | 20,246 |
Specific Valuation Allowances [Member] | Paycheck Protection Program [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 0 | 0 |
Specific Valuation Allowances [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 513 | 383 |
Specific Valuation Allowances [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 0 | 0 |
Specific Valuation Allowances [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 0 | 0 |
Specific Valuation Allowances [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Portion of allowance for loan losses | 18 | 5 |
Loans Individually Evaluated for Impairment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 80,495 | 99,453 |
Loans Individually Evaluated for Impairment [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 21,287 | 24,360 |
Loans Individually Evaluated for Impairment [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 22,888 | 65,244 |
Loans Individually Evaluated for Impairment [Member] | Paycheck Protection Program [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 0 | 0 |
Loans Individually Evaluated for Impairment [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 34,057 | 8,609 |
Loans Individually Evaluated for Impairment [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 1,684 | 665 |
Loans Individually Evaluated for Impairment [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | 561 | 570 |
Loans Individually Evaluated for Impairment [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total loans | $ 18 | $ 5 |
Premises and Equipment (Narrati
Premises and Equipment (Narrative) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended | |||
Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 01, 2019 | |
Property, Plant and Equipment [Line Items] | |||||
Depreciation | $ 49,900 | $ 41,000 | $ 37,200 | ||
Operating leases, rent expense, net | 46,000 | 42,100 | 31,100 | ||
Operating Lease, Right-of-Use Asset | 292,087 | 297,736 | $ 170,500 | ||
Operating lease, payments | 31,600 | 27,500 | |||
Recognition of right of use asset related to the new corporate headquarters facility | $ 121,700 | ||||
Recognition of operating lease liability related to the new corporate headquarters facility | $ 121,700 | ||||
Current period amortization of deferred gain | 1,400 | 2,800 | |||
Other Liabilities [Member] | |||||
Property, Plant and Equipment [Line Items] | |||||
Operating lease, liability | 323,044 | 323,700 | $ 174,400 | ||
Partnership Interest [Member] | |||||
Property, Plant and Equipment [Line Items] | |||||
Operating leases, rent expense, net | $ 9,800 | $ 5,900 | $ 464 |
Premises and Equipment (Premise
Premises and Equipment (Premises and Equipment) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019 |
Property, Plant and Equipment [Abstract] | |||
Land | $ 128,739 | $ 112,818 | |
Buildings | 458,693 | 441,404 | |
Technology, furniture and equipment | 243,395 | 226,925 | |
Leasehold improvements | 183,827 | 156,144 | |
Construction and projects in progress | 41,202 | 44,251 | |
Operating lease, right-of-use asset | 292,087 | 297,736 | $ 170,500 |
Premises and equipment, Gross | 1,347,943 | 1,279,278 | |
Less accumulated depreciation and amortization | (302,365) | (267,331) | |
Total premises and equipment, net | $ 1,045,578 | $ 1,011,947 |
Premises and Equipment (Lease C
Premises and Equipment (Lease Commitments, Components of Lease Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2020 | Dec. 31, 2019 | |
Property, Plant and Equipment [Line Items] | ||
Amortization of lease right-of-use assets | $ 32,772 | $ 27,626 |
Short-term lease expense | 1,799 | 4,592 |
Non-lease components (including taxes, insurance, common maintenance, etc.) | 11,396 | 9,896 |
Total operating lease expense, excluding rent | $ 45,967 | $ 42,114 |
Premises and Equipment Future M
Premises and Equipment Future Minimum Lease Payments Due Under non-Cancelable Operating Leases (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019 |
Property, Plant and Equipment [Line Items] | |||
2021 | $ 32,357 | ||
2022 | 30,741 | ||
2023 | 28,927 | ||
2024 | 27,487 | ||
2025 | 26,240 | ||
Thereafter | 267,707 | ||
Total undiscounted operating lease liability | 413,459 | ||
Imputed interest | $ 90,415 | ||
Weighted-average lease term in years | 15 years 6 months 25 days | ||
Weighted-average discount rate | 3.10% | ||
Other Liabilities [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Total operating lease liability included in the accompanying balance sheet | $ 323,044 | $ 323,700 | $ 174,400 |
Goodwill and Other Intangible_3
Goodwill and Other Intangible Assets (Narrative) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Finite-Lived Intangible Assets [Line Items] | |||
Amortization expense related to intangible assets | $ 918 | $ 1,168 | $ 1,424 |
Minimum [Member] | |||
Finite-Lived Intangible Assets [Line Items] | |||
Other intangible assets estimated lives, years | 5 years | ||
Maximum [Member] | |||
Finite-Lived Intangible Assets [Line Items] | |||
Other intangible assets estimated lives, years | 10 years |
Goodwill and Other Intangible_4
Goodwill and Other Intangible Assets (Schedule of Goodwill) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Goodwill and Intangible Assets Disclosure [Abstract] | ||
Goodwill | $ 654,952 | $ 654,952 |
Goodwill and Other Intangible_5
Goodwill and Other Intangible Assets (Schedule of Other Intangible Assets) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Finite-Lived Intangible Assets [Line Items] | ||
Gross Intangible Assets | $ 12,186 | $ 12,688 |
Accumulated Amortization | (10,623) | (10,207) |
Net Intangible Assets | 1,563 | 2,481 |
Core Deposits [Member] | ||
Finite-Lived Intangible Assets [Line Items] | ||
Gross Intangible Assets | 9,300 | 9,300 |
Accumulated Amortization | (8,004) | (7,257) |
Net Intangible Assets | 1,296 | 2,043 |
Customer Relationships [Member] | ||
Finite-Lived Intangible Assets [Line Items] | ||
Gross Intangible Assets | 2,886 | 3,388 |
Accumulated Amortization | (2,619) | (2,950) |
Net Intangible Assets | $ 267 | $ 438 |
Goodwill and Other Intangible_6
Goodwill and Other Intangible Assets (Estimated Aggregate Future Amortization Expense for Intangible Assets) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Goodwill and Intangible Assets Disclosure [Abstract] | ||
2021 | $ 697 | |
2022 | 481 | |
2023 | 282 | |
2024 | 87 | |
2025 | 11 | |
Thereafter | 5 | |
Finite-Lived Intangible Assets, Net, Total | $ 1,563 | $ 2,481 |
Deposits (Schedule of Deposits)
Deposits (Schedule of Deposits) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Deposit [Line Items] | ||
Non-interest-bearing demand deposits: | $ 15,117,051 | $ 10,873,629 |
Time Deposits, $100,000 or More | 809,395 | |
Total Interest-bearing deposits | 19,898,710 | 16,765,935 |
Total deposits | 35,015,761 | 27,639,564 |
Commercial And Individual [Member] | ||
Deposit [Line Items] | ||
Non-interest-bearing demand deposits: | 13,914,754 | 10,212,265 |
Correspondent Banks [Member] | ||
Deposit [Line Items] | ||
Non-interest-bearing demand deposits: | 242,225 | 246,181 |
Public Funds [Member] | ||
Deposit [Line Items] | ||
Non-interest-bearing demand deposits: | 960,072 | 415,183 |
Savings and interest checking | 597,503 | 548,399 |
Money market accounts | 50,070 | 73,180 |
Time Deposits, $100,000 or More | 5,163 | 24,672 |
Time accounts under $100,000 | 25 | 25 |
Total Interest-bearing deposits | 652,761 | 646,276 |
Private Accounts [Member] | ||
Deposit [Line Items] | ||
Savings and interest checking | 9,132,789 | 7,147,327 |
Money market accounts | 8,977,585 | 7,888,433 |
Time Deposits, $100,000 or More | 804,232 | 736,481 |
Time accounts under $100,000 | 331,343 | 347,418 |
Total Interest-bearing deposits | $ 19,245,949 | $ 16,119,659 |
Deposits (Additional Informatio
Deposits (Additional Information About Corporation's Deposits) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Deposits [Abstract] | ||
Certificate Of Deposit Account Registry Service Cdars Deposits | $ 372 | $ 361 |
Deposits from foreign sources (primarily Mexico) | 884,169 | 805,828 |
Time Deposits, at or Above FDIC Insurance Limit | 18,694,320 | 13,115,796 |
Deposits from certain directors, executive officers and their affiliates | $ 210,389 | $ 197,919 |
Deposits (Scheduled Maturities
Deposits (Scheduled Maturities of Time Deposits) (Detail) $ in Thousands | Dec. 31, 2020USD ($) |
Deposits [Abstract] | |
2021 | $ 979,825 |
2022 | 160,938 |
Time deposits, Total | $ 1,140,763 |
Deposits (Scheduled Maturitie_2
Deposits (Scheduled Maturities of Time Deposits in Amounts of $100,000 or More) (Detail) $ in Thousands | Dec. 31, 2020USD ($) |
Deposits [Abstract] | |
Due within 3 months or less | $ 327,284 |
Due after 3 months and within 6 months | 178,403 |
Due after 6 months and within 12 months | 195,766 |
Due after 12 months | 107,942 |
Time deposits, $100,000 or more, total | $ 809,395 |
Borrowed Funds (Narrative) (Det
Borrowed Funds (Narrative) (Detail) $ in Thousands | Mar. 17, 2017USD ($) | Dec. 31, 2020USD ($)quarter | Dec. 31, 2019USD ($) | Dec. 31, 2004USD ($) |
Borrowed Funds [Line Items] | ||||
Federal funds purchased | $ 48,900 | $ 27,200 | ||
Securities sold under agreements to repurchase | 2,100,000 | 1,700,000 | ||
Subordinated notes | 99,021 | 98,865 | ||
Junior subordinated deferrable interest debentures | 136,357 | 136,299 | ||
Proceeds from issuance of Common Equity Securities | $ 145,452 | |||
Maximum number of quarterly periods by which the corporation has the right to defer interest payments on junior subordinated deferrable interest debentures | quarter | 20 | |||
Trust Preferred Securities Tier Two Capital Allowable Portion [Member] | Cullen/Frost [Member] | ||||
Borrowed Funds [Line Items] | ||||
Proceeds from Issuance of Trust Preferred Securities | $ 133,000 | 133,000 | ||
Trust II [Member] | ||||
Borrowed Funds [Line Items] | ||||
Maturity date | Mar. 1, 2034 | |||
Proceeds from Issuance of Trust Preferred Securities | $ 120,000 | |||
Proceeds from issuance of Common Equity Securities | $ 3,700 | |||
Floating rate 3 month Libor plus margin | 1.55% | |||
Trust II [Member] | Trust Preferred Securities Tier Two Capital Allowable Portion [Member] | Cullen/Frost [Member] | ||||
Borrowed Funds [Line Items] | ||||
Proceeds from Issuance of Trust Preferred Securities | 120,000 | 120,000 | ||
WNB Capital Trust I [Member] | ||||
Borrowed Funds [Line Items] | ||||
Maturity date | Jul. 23, 2034 | |||
Proceeds from Issuance of Trust Preferred Securities | $ 13,000 | |||
Proceeds from issuance of Common Equity Securities | $ 403 | |||
Floating rate 3 month Libor plus margin | 2.35% | |||
WNB Capital Trust I [Member] | Trust Preferred Securities Tier Two Capital Allowable Portion [Member] | Cullen/Frost [Member] | ||||
Borrowed Funds [Line Items] | ||||
Proceeds from Issuance of Trust Preferred Securities | $ 13,000 | 13,000 | ||
Federal Funds Purchased [Member] | Maximum [Member] | ||||
Borrowed Funds [Line Items] | ||||
Short term debt maturity period | 90 days | |||
Federal Funds Purchased [Member] | Minimum [Member] | ||||
Borrowed Funds [Line Items] | ||||
Short term debt maturity period | 1 day | |||
Securities Loaned or Sold under Agreements to Repurchase [Member] | Maximum [Member] | ||||
Borrowed Funds [Line Items] | ||||
Short term debt maturity period | 90 days | |||
Securities Loaned or Sold under Agreements to Repurchase [Member] | Minimum [Member] | ||||
Borrowed Funds [Line Items] | ||||
Short term debt maturity period | 30 days | |||
Subordinated Debt [Member] | ||||
Borrowed Funds [Line Items] | ||||
Subordinated notes | $ 100,000 | |||
Subordinated notes interest rate | 4.50% | |||
Maturity date | Mar. 17, 2027 | |||
Unamortized debt issuance cost related to note | $ 979 | 1,100 | ||
Junior Subordinated Deferrable Interest Debenture [Member] | Trust II [Member] | ||||
Borrowed Funds [Line Items] | ||||
Junior subordinated deferrable interest debentures | 123,700 | 123,700 | $ 123,700 | |
Unamortized debt issuance cost related to note | $ 758 | $ 816 | ||
Floating rate 3 month Libor plus margin | 1.78% | 3.46% | ||
Junior Subordinated Deferrable Interest Debenture [Member] | WNB Capital Trust I [Member] | ||||
Borrowed Funds [Line Items] | ||||
Junior subordinated deferrable interest debentures | $ 13,400 | $ 13,400 | $ 13,400 | |
Floating rate 3 month Libor plus margin | 2.56% | 4.28% |
Off-Balance Sheet Arrangements
Off-Balance Sheet Arrangements Commitments Guarantees and Contingencies (Narrative) (Detail) - USD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2020 | Dec. 31, 2019 | |
Commitments And Guarantees [Line Items] | ||
Credit card guarantees | $ 9.1 | $ 8.5 |
Fully collateralized credit card guarantees | $ 8.2 | $ 1.3 |
Off-Balance-Sheet Arrangement_3
Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies (Financial Instruments With Off-Balance-Sheet Risk) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Standby Letters of Credit [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Financial instruments with off- balance-sheet risk | $ 241,345 | $ 260,587 |
Deferred Standby Letter of Credit Fees [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Financial instruments with off- balance-sheet risk | 1,723 | 1,276 |
Commitments to Extend Credit [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Financial instruments with off- balance-sheet risk | $ 9,814,475 | $ 9,306,043 |
Off-Balance-Sheet Arrangement_4
Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies - Credit Losses on Off-Balance-Sheet Commitments (Details) - USD ($) $ in Thousands | 12 Months Ended | |||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Fair Value Disclosures [Abstract] | ||||
Off-Balance Sheet, Credit Loss, Liability | $ 44,152 | $ 500 | $ 500 | $ 428 |
Impact of New Accounting Pronouncement | 39,377 | 0 | 0 | |
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | $ 4,275 | $ 0 | $ 72 |
Capital and Regulatory Matter_2
Capital and Regulatory Matters (Narrative) (Detail) | Nov. 19, 2020USD ($)$ / sharesshares | Mar. 16, 2020USD ($)$ / shares | Jul. 24, 2019USD ($) | Mar. 17, 2017USD ($) | Feb. 15, 2013USD ($)$ / sharesshares | Dec. 31, 2020USD ($)quarter$ / sharesRateshares | Dec. 31, 2019USD ($)$ / sharesRateshares | Dec. 31, 2018USD ($)shares | Jan. 01, 2020USD ($) | Jan. 01, 2019USD ($)Rate | Jan. 01, 2018USD ($) | Dec. 31, 2017USD ($) |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Credit loss transitional period in years under CECL | 5 years | |||||||||||
Subordinated notes | $ 99,021,000 | $ 98,865,000 | ||||||||||
Cumulative effect of accounting change | $ (29,252,000) | $ (14,672,000) | $ (2,285,000) | |||||||||
CECL Transition Amount | 63,700,000 | |||||||||||
Estimated Incremental Effect of CECL | 34,400,000 | |||||||||||
Stock Redeemed or Called During Period, Value | $ 150,000,000 | |||||||||||
Share repurchase authorized amount | $ 100,000,000 | |||||||||||
Stock repurchase program, period in force | 1 year | |||||||||||
Treasury stock, shares, acquired | shares | 206,951 | 716,062 | 1,037,982 | |||||||||
Treasury Stock, Value, Acquired, Cost Method | $ (15,785,000) | $ (68,793,000) | $ (101,010,000) | |||||||||
Aggregate dividends available for payment without prior regulatory approval | $ 503,900,000 | |||||||||||
Maximum number of quarterly periods by which the corporation has the right to defer interest payments on junior subordinated deferrable interest debentures | quarter | 20 | |||||||||||
Preferred Stock [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Stock Redeemed or Called During Period, Value | $ 144,486,000 | |||||||||||
Retained Earnings [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Cumulative effect of accounting change | $ (29,252,000) | (14,672,000) | $ (29,300,000) | $ (14,700,000) | $ (2,300,000) | $ (2,285,000) | ||||||
Stock Redeemed or Called During Period, Value | $ 5,514,000 | |||||||||||
Series A Preferred Stock [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Non-cumulative perpetual preferred stock, dividend rate percentage | 5.375% | |||||||||||
Preferred Stock, Shares Issued | shares | 6,000,000 | 6,000,000 | ||||||||||
Preferred Stock, Aggregate Liquidation Preference, Value | $ 150,000,000 | $ 25 | ||||||||||
Preferred Stock, Par or Stated Value Per Share | $ / shares | $ 0.01 | $ 0.01 | ||||||||||
Liquidation preference per share | $ / shares | $ 25 | $ 25 | ||||||||||
Payments of Stock Issuance Costs | $ 5,500,000 | |||||||||||
Stock Redeemed or Called During Period, Value | $ 150,000,000 | |||||||||||
Proceeds from issuance of preferred stock | $ 144,500,000 | |||||||||||
Series B Preferred Stock [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Non-cumulative perpetual preferred stock, dividend rate percentage | 4.45% | |||||||||||
Preferred Stock, Shares Issued | shares | 150,000 | 150,000 | ||||||||||
Preferred Stock, Aggregate Liquidation Preference, Value | $ 150,000,000 | $ 1,000 | ||||||||||
Preferred Stock, Par or Stated Value Per Share | $ / shares | $ 0.01 | $ 0.01 | ||||||||||
Liquidation preference per share | $ / shares | $ 1,000 | |||||||||||
Number of Preferred Stock equivalent depositary shares | shares | 40 | |||||||||||
Payments of Stock Issuance Costs | $ 4,500,000 | |||||||||||
Proceeds from issuance of preferred stock | $ 145,500,000 | |||||||||||
Series B Preferred Stock Equivalent Depositary Shares Member [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Liquidation preference per share | $ / shares | $ 25 | |||||||||||
Subordinated Debt [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Subordinated notes | $ 100,000,000 | |||||||||||
Subordinated notes interest rate | 4.50% | |||||||||||
Per year percentage of decreases in permissible portion of Subordinate Note included in Total Capital | 20.00% | |||||||||||
Final years of the term of the notes | 5 years | |||||||||||
Cullen/Frost [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Non-cumulative perpetual preferred stock | $ 145,500,000 | $ 144,500,000 | ||||||||||
Non-cumulative perpetual preferred stock, dividend rate percentage | 4.45% | 5.375% | ||||||||||
Common Equity Tier One Risk Based Capital To Risk Weighted Assets Minimum Capital Required Basel III Phase In Schedule, Ratio | 4.50% | |||||||||||
Capital Conservation Buffer | 2.50% | |||||||||||
Effective common equity tier one capital to risk weighted assets, ratio upon full implementation | 7.00% | 7.00% | 7.00% | |||||||||
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets | Rate | 6.00% | |||||||||||
Effective tier one capital ratio, upon full implementation | 8.50% | 8.50% | 8.50% | |||||||||
Minimum ratio of Total capital to risk weighted assets | Rate | 15.44% | 14.57% | 8.00% | |||||||||
Tier one risk based capital to risk weighted assets, ratio upon full implementation | 10.50% | 10.50% | 10.50% | |||||||||
Minimum leverage ratio | 4.00% | 4.00% | 4.00% | |||||||||
Cullen/Frost [Member] | Trust Preferred Securities Tier Two Capital Allowable Portion [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Trust preferred securities | $ 133,000,000 | $ 133,000,000 | ||||||||||
Cullen/Frost [Member] | Subordinated Debt [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Permissible Portion Of Subordinated Note Included In Capital | 100,000,000 | 100,000,000 | ||||||||||
Frost Bank [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Additional Tier 1 Capital beyond Common Equity Tier 1 | $ 0 | $ 0 | ||||||||||
Common Equity Tier One Risk Based Capital To Risk Weighted Assets Minimum Capital Required Basel III Phase In Schedule, Ratio | 4.50% | |||||||||||
Capital Conservation Buffer | 2.50% | |||||||||||
Effective common equity tier one capital to risk weighted assets, ratio upon full implementation | 7.00% | 7.00% | 7.00% | |||||||||
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets | Rate | 6.00% | |||||||||||
Effective tier one capital ratio, upon full implementation | 8.50% | 8.50% | 8.50% | |||||||||
Minimum ratio of Total capital to risk weighted assets | Rate | 13.76% | 13.40% | 8.00% | |||||||||
Tier one risk based capital to risk weighted assets, ratio upon full implementation | 10.50% | 10.50% | 10.50% | |||||||||
Minimum leverage ratio | 4.00% | 4.00% | 4.00% | |||||||||
stock repurchase 2019 plan [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Treasury Stock, Value, Acquired, Cost Method | $ (13,700,000) | $ (17,200,000) | ||||||||||
stock repurchase 2019 plan [Member] | Treasury Stock [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Treasury stock, shares, acquired | shares | 177,834 | 202,724 | ||||||||||
stock repurchase 2017 plan [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Treasury Stock, Value, Acquired, Cost Method | $ (50,000,000) | $ (100,000,000) | ||||||||||
stock repurchase 2017 plan [Member] | Treasury Stock [Member] | ||||||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||||||
Treasury stock, shares, acquired | shares | 496,307 | 1,027,292 |
Regulatory Matters (Actual and
Regulatory Matters (Actual and Required Capital Ratios) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019 |
Cullen/Frost [Member] | |||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | |||
Common Equity Tier One to Risk-Weighted Assets, Actual, Capital Amount | $ 3,058,447 | $ 2,857,250 | |
Common Equity Tier One Risk-Based Capital Ratio, Actual | 12.86% | 12.36% | |
Common Equity Tier One Capital Required For Capital Adequacy Minimum Capital Required Basel III Fully Phased In, Capital Amount | $ 1,664,867 | $ 1,617,886 | |
Common Equity Tier One Risk Based Capital To Risk Weighted Assets Minimum Capital Required Basel III Fully Phased In, Ratio | 7.00% | 7.00% | 7.00% |
Common Equity Tier One Capital Required To Be Well Capitalized, Capital Amount | $ 1,545,948 | $ 1,502,323 | |
Common Equity Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum | 6.50% | 6.50% | |
Tier 1 Capital to Risk-Weighted Assets, Actual, Capital Amount | $ 3,203,899 | $ 3,001,736 | |
Tier 1 Capital to Risk-Weighted Assets, Actual, Ratio | 13.47% | 12.99% | |
Tier One Risk Based Capital Required For Capital Adequacy Minimum Capital Required Basel III Fully Phased In, Capital Amount | $ 2,021,624 | $ 1,964,576 | |
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Minimum Capital Required Basel III Fully Phased In, Ratio | 8.50% | 8.50% | 8.50% |
Tier 1 Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Capital Amount | $ 1,902,705 | $ 1,849,013 | |
Tier 1 Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Ratio | 8.00% | 8.00% | |
Total Capital to Risk-Weighted Assets, Actual, Capital Amount | $ 3,672,912 | $ 3,367,403 | |
Total Capital to Risk-Weighted Assets, Actual, Ratio | 15.44% | 14.57% | 8.00% |
Capital Required for Capital Adequacy Minimum Capital Required Basel III Fully Phased In, Capital Amount | $ 2,497,300 | $ 2,426,829 | |
Capital Required for Capital Adequacy to Risk Weighted Assets Minimum Capital Required Basel III Fully Phased In, Ratio | 10.50% | 10.50% | 10.50% |
Total Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Capital Amount | $ 2,378,381 | $ 2,311,266 | |
Total Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Ratio | 10.00% | 10.00% | |
Leverage Ratio, Actual, Capital Amount | $ 3,203,899 | $ 3,001,736 | |
Leverage Ratio, Actual, Ratio | 8.07% | 9.28% | |
Tier One Leverage Capital Required for Capital Adequacy Minimum Capital Required Basel III Fully Phased In, Capital Amount | $ 1,589,004 | $ 1,293,188 | |
Tier One Leverage Capital Required for Capital Adequacy to Average Assets Minimum Capital Required Basel III Fully Phased In, Ratio | 4.00% | 4.00% | 4.00% |
Leverage Ratio, Required to be Considered Well Capitalized, Capital Amount | $ 1,986,255 | $ 1,616,485 | |
Leverage Ratio, Required to be Considered Well Capitalized, Ratio | 5.00% | 5.00% | |
Frost Bank [Member] | |||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | |||
Common Equity Tier One to Risk-Weighted Assets, Actual, Capital Amount | $ 3,030,093 | $ 2,958,326 | |
Common Equity Tier One Risk-Based Capital Ratio, Actual | 12.77% | 12.82% | |
Common Equity Tier One Capital Required For Capital Adequacy Minimum Capital Required Basel III Fully Phased In, Capital Amount | $ 1,661,620 | $ 1,615,206 | |
Common Equity Tier One Risk Based Capital To Risk Weighted Assets Minimum Capital Required Basel III Fully Phased In, Ratio | 7.00% | 7.00% | 7.00% |
Common Equity Tier One Capital Required To Be Well Capitalized, Capital Amount | $ 1,542,933 | $ 1,499,834 | |
Common Equity Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum | 6.50% | 6.50% | |
Tier 1 Capital to Risk-Weighted Assets, Actual, Capital Amount | $ 3,030,093 | $ 2,958,326 | |
Tier 1 Capital to Risk-Weighted Assets, Actual, Ratio | 12.77% | 12.82% | |
Tier One Risk Based Capital Required For Capital Adequacy Minimum Capital Required Basel III Fully Phased In, Capital Amount | $ 2,017,682 | $ 1,961,322 | |
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Minimum Capital Required Basel III Fully Phased In, Ratio | 8.50% | 8.50% | 8.50% |
Tier 1 Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Capital Amount | $ 1,898,995 | $ 1,845,950 | |
Tier 1 Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Ratio | 8.00% | 8.00% | |
Total Capital to Risk-Weighted Assets, Actual, Capital Amount | $ 3,266,106 | $ 3,090,993 | |
Total Capital to Risk-Weighted Assets, Actual, Ratio | 13.76% | 13.40% | 8.00% |
Capital Required for Capital Adequacy Minimum Capital Required Basel III Fully Phased In, Capital Amount | $ 2,492,430 | $ 2,422,809 | |
Capital Required for Capital Adequacy to Risk Weighted Assets Minimum Capital Required Basel III Fully Phased In, Ratio | 10.50% | 10.50% | 10.50% |
Total Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Capital Amount | $ 2,373,743 | $ 2,307,438 | |
Total Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Ratio | 10.00% | 10.00% | |
Leverage Ratio, Actual, Capital Amount | $ 3,030,093 | $ 2,958,326 | |
Leverage Ratio, Actual, Ratio | 7.63% | 9.15% | |
Tier One Leverage Capital Required for Capital Adequacy Minimum Capital Required Basel III Fully Phased In, Capital Amount | $ 1,588,200 | $ 1,292,743 | |
Tier One Leverage Capital Required for Capital Adequacy to Average Assets Minimum Capital Required Basel III Fully Phased In, Ratio | 4.00% | 4.00% | 4.00% |
Leverage Ratio, Required to be Considered Well Capitalized, Capital Amount | $ 1,985,250 | $ 1,615,929 | |
Leverage Ratio, Required to be Considered Well Capitalized, Ratio | 5.00% | 5.00% |
Earnings Per Common Share (Basi
Earnings Per Common Share (Basic and Diluted Earnings Per Common Share) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Earnings Per Share [Abstract] | |||
Net income | $ 331,151 | $ 443,599 | $ 454,918 |
Less: Preferred stock dividends | 2,016 | 8,063 | 8,063 |
Redemption of preferred stock | 5,514 | 0 | 0 |
Net income available to common shareholders | 323,621 | 435,536 | 446,855 |
Less: Earnings allocated to participating securities | 3,136 | 3,687 | 3,169 |
Distributed earnings allocated to common stock | 178,863 | 175,540 | 164,268 |
Undistributed earnings allocated to common stock | 141,622 | 256,309 | 279,418 |
Net earnings allocated to common stock | $ 320,485 | $ 431,849 | $ 443,686 |
Weighted-average shares outstanding for basic earnings per common share | 62,727,053 | 62,741,769 | 63,704,508 |
Dilutive effect of stock compensation | 276,784 | 700,101 | 982,208 |
Weighted-average shares outstanding for diluted earnings per common share | 63,003,837 | 63,441,870 | 64,686,716 |
Employee Benefit Plans (Narrati
Employee Benefit Plans (Narrative) (Detail) - USD ($) | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Defined contribution plan, cost | $ 16,000,000 | $ 28,900,000 | |
Net actuarial loss expected to be recognized | $ 6,100,000 | ||
Percentage of equity investments in mutual fund | 66.00% | ||
Net periodic benefit cost, Expected return on plan assets | 7.25% | 7.25% | 7.25% |
Expected defined benefit plans contribution within a year | $ 1,200,000 | ||
Number of stock plans | 3 | ||
Share-based compensation arrangement by share-based payment award, number of shares available for grant | 887,189 | ||
Dividends, share-based compensation | $ 0.72 | $ 0.71 | $ 0.67 |
Weighted-average risk-free interest rate | 0.19% | 1.65% | 2.95% |
Performance Shares [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Award payout percentage at less than 25th percentile level of achievement | 0.00% | ||
Award payout percentage at the 25th percentile level of achievement | 50.00% | ||
Award payout percentage at the 50th percentile level of achievement | 100.00% | ||
Award payout percentage at the 75th percentile level of achievement | 150.00% | ||
Performance Shares [Member] | Pro Forma [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Granted in period, number of shares/units | 48,409 | 34,317 | 30,466 |
Share-based Payment Arrangement, Option [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Options awarded during period | 0 | 0 | 0 |
Equity Securities [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Target asset allocation percentage | 62.00% | ||
Fixed Income Securities [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Target asset allocation percentage | 36.00% | ||
Two Thousand Fifteen Plan [Member] | Stock Options [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Vesting period of options awarded, years | 10 years | ||
Cliff vesting period, years | 4 years | ||
Two Thousand Fifteen Plan [Member] | Non Vested Stock Awards and Stock Units [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Life period of options awarded, years | 10 years | ||
Cliff vesting period, years | 4 years | ||
Maximum [Member] | Performance Shares [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Granted in period, number of shares/units | 72,618 | 51,479 | 45,703 |
Deferred Profit Sharing [Member] | Qualified Plan [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Defined contribution plan, cost | $ 12,600,000 | $ 11,900,000 | |
Other Pension Plan [Member] | Qualified Plan [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Defined contribution plan, cost | $ 16,300,000 | $ 15,000,000 | |
Contribution percentage of eligible compensation | 2.00% | ||
Maximum annual contributions per employee, percent | 50.00% | ||
Participants contribution eligible for match | 100.00% | ||
Other Pension Plan [Member] | Qualified Plan [Member] | Maximum [Member] | |||
Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
Employer matching contribution, percent of employees' gross pay | 6.00% |
Employee Benefit Plans (Combine
Employee Benefit Plans (Combined Activity in Corporations Defined Benefit Pension Plans) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Retirement Benefits [Abstract] | |||
Fair value of plan assets at beginning of year | $ 174,173 | $ 152,820 | $ 168,450 |
Actual return on plan assets | 16,599 | 29,945 | (7,739) |
Employer contributions | 1,201 | 1,163 | 1,077 |
Benefits paid | (9,885) | (9,755) | (8,968) |
Fair value of plan assets at end of year | 182,088 | 174,173 | 152,820 |
Benefit obligation at beginning of year | 186,641 | 167,107 | 182,607 |
Interest cost | 5,010 | 6,472 | 5,898 |
Actuarial (gain) loss | 15,827 | 22,817 | (12,430) |
Benefits paid | (9,885) | (9,755) | (8,968) |
Benefit obligation at end of year | 197,593 | 186,641 | 167,107 |
Funded status of the plan at end of year and accrued benefit (liability) recognized | (15,505) | (12,468) | (14,287) |
Accumulated benefit obligation at end of year | $ 197,593 | $ 186,641 | $ 167,107 |
Employee Benefit Plans (Disaggr
Employee Benefit Plans (Disaggregated Information Related to Corporations Defined Benefit Pension Plans) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 |
Defined Benefit Plan Disclosure [Line Items] | ||||
Projected benefit obligation | $ 197,593 | $ 186,641 | $ 167,107 | $ 182,607 |
Accumulated benefit obligation | 197,593 | 186,641 | 167,107 | |
Fair value of plan assets | 182,088 | 174,173 | 152,820 | $ 168,450 |
Funded status of the plan at end of year and accrued benefit (liability) recognized | (15,505) | (12,468) | $ (14,287) | |
Retirement Plan [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Projected benefit obligation | 180,986 | 170,541 | ||
Accumulated benefit obligation | 180,986 | 170,541 | ||
Fair value of plan assets | 182,088 | 174,173 | ||
Funded status of the plan at end of year and accrued benefit (liability) recognized | 1,102 | 3,632 | ||
Restoration Plan [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Projected benefit obligation | 16,607 | 16,100 | ||
Accumulated benefit obligation | 16,607 | 16,100 | ||
Fair value of plan assets | 0 | 0 | ||
Funded status of the plan at end of year and accrued benefit (liability) recognized | $ (16,607) | $ (16,100) |
Employee Benefit Plans (Net Per
Employee Benefit Plans (Net Periodic Benefit Cost (Benefit)) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Retirement Benefits [Abstract] | |||
Expected return on plan assets, net of expenses | $ (12,289) | $ (10,772) | $ (11,916) |
Interest cost on projected benefit obligation | 5,010 | 6,472 | 5,898 |
Net amortization and deferral | 5,319 | 5,623 | 5,002 |
Net periodic expense (benefit) | $ (1,960) | $ 1,323 | $ (1,016) |
Employee Benefit Plans (Defined
Employee Benefit Plans (Defined Benefit Pension Plans Recognized as Component of Other Comprehensive Income) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Defined Benefit Plan Disclosure [Line Items] | |||
Net actuarial gain (loss) | $ (6,199) | $ 1,979 | $ (2,223) |
Deferred tax (expense) benefit | 1,302 | (416) | 466 |
Other comprehensive income (loss), net of tax | $ (4,897) | $ 1,563 | $ (1,757) |
Employee Benefit Plans (Defin_2
Employee Benefit Plans (Defined Benefit Pension Plans not Recognized as Component of Combined Net Period Benefit Cost) (Detail) - Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2020 | Dec. 31, 2019 | |
Defined Benefit Plan Disclosure [Line Items] | ||
Net actuarial loss | $ (64,343) | $ (57,964) |
Deferred tax benefit | 13,512 | 12,210 |
Amounts included in accumulated other comprehensive loss, net of tax | $ (50,831) | $ (45,934) |
Employee Benefit Plans (Weighte
Employee Benefit Plans (Weighted-Average Assumptions Used to Determine Benefit Obligations) (Detail) | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Retirement Benefits [Abstract] | |||
Benefit obligations, Discount rate | 2.43% | 3.20% | 4.36% |
Net periodic benefit cost, Discount rate | 3.20% | 4.36% | 3.68% |
Net periodic benefit cost, Expected return on plan assets | 7.25% | 7.25% | 7.25% |
Employee Benefit Plans (Fair Va
Employee Benefit Plans (Fair Value of Plan Assets) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 |
Defined Benefit Plan Disclosure [Line Items] | ||||
Fair value of plan assets | $ 182,088 | $ 174,173 | $ 152,820 | $ 168,450 |
Mutual Funds [Member] | Level 1 [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Fair value of plan assets | 180,693 | 172,773 | ||
Cash and Cash Equivalents [Member] | Level 1 [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Fair value of plan assets | $ 1,395 | $ 1,400 |
Employee Benefit Plans (Expecte
Employee Benefit Plans (Expected Future Benefit Payments Related to Defined Benefit Plans) (Detail) $ in Thousands | Dec. 31, 2020USD ($) |
Retirement Benefits [Abstract] | |
2021 | $ 11,315 |
2022 | 11,507 |
2023 | 11,668 |
2024 | 11,800 |
2025 | 11,880 |
2026 through 2030 | 57,248 |
Total defined benefit plan expected future benefit payments | $ 115,418 |
Employee Benefit Plans (Summary
Employee Benefit Plans (Summary of Activity in Corporation's Active Stock Plans) (Detail) - $ / shares | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Stock options exercised, number of shares | (408,563) | (399,224) | (548,238) |
Director deferred stock units outstanding [Member] | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Ending balance, number of shares/units | 52,860 | 55,370 | 48,910 |
Beginning balance, number of shares/units | 55,370 | 48,910 | 53,008 |
Ending balance, weighted-average grant-date fair value | $ 75.47 | $ 74.76 | $ 71.14 |
Beginning balance, weighted-average grant-date fair value | $ 74.76 | $ 71.14 | $ 64.87 |
Granted in period, number of shares/units | 10,428 | 7,592 | 6,576 |
Granted in period, weighted-average grant-date fair value | $ 73.84 | $ 102.70 | $ 109.58 |
Stock awards exercised/vested in period, number of shares | (12,938) | (1,132) | (10,674) |
Stock awards exercised/vested in period, weighted-average grant date fair value | $ 71.09 | $ 106.03 | $ 63.68 |
Non-Vested Stock Awards/ Stock Units Outstanding [Member] | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Ending balance, number of shares/units | 470,359 | 440,647 | 383,797 |
Beginning balance, number of shares/units | 440,647 | 383,797 | 312,656 |
Ending balance, weighted-average grant-date fair value | $ 86.24 | $ 90.22 | $ 85.59 |
Beginning balance, weighted-average grant-date fair value | $ 90.22 | $ 85.59 | $ 81.71 |
Granted in period, number of shares/units | 151,038 | 127,091 | 109,847 |
Granted in period, weighted-average grant-date fair value | $ 66.79 | $ 93.46 | $ 94.81 |
Stock awards exercised/vested in period, number of shares | (117,990) | (53,990) | (32,050) |
Stock awards exercised/vested in period, weighted-average grant date fair value | $ 76.07 | $ 65.11 | $ 78.92 |
Forfeited/expired in period, number of shares/units | (3,336) | (16,251) | (6,656) |
Forfeited/expired in period, weighted-average grant date fair value | $ 91.07 | $ 89.71 | $ 87.60 |
Share-based Payment Arrangement, Option [Member] | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Ending balance, number of shares | 1,739,559 | 1,980,866 | 2,352,008 |
Beginning balance, number of shares | 1,980,866 | 2,352,008 | 2,917,142 |
Ending balance, weighted-average exercise price | $ 66.11 | $ 64.60 | $ 63.55 |
Beginning balance, weighted-average exercise price | $ 64.60 | $ 63.55 | $ 63.34 |
Stock options exercised, number of shares | (235,880) | (359,892) | (513,134) |
Stock options exercised, weighted-average exercise price | $ 53.23 | $ 57.71 | $ 61.68 |
Forfeited/expired, number of shares | (5,427) | (11,250) | (52,000) |
Forfeited/expired, weighted-average exercise price | $ 75.74 | $ 65.11 | $ 70.42 |
Options awarded during period | 0 | 0 | 0 |
Maximum [Member] | Performance Shares [Member] | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Ending balance, number of shares/units | 201,257 | 177,288 | 125,809 |
Beginning balance, number of shares/units | 177,288 | 125,809 | 80,106 |
Ending balance, weighted-average grant-date fair value | $ 77.18 | $ 83.48 | $ 82.55 |
Beginning balance, weighted-average grant-date fair value | $ 83.48 | $ 82.55 | $ 79.91 |
Granted in period, number of shares/units | 72,618 | 51,479 | 45,703 |
Granted in period, weighted-average grant-date fair value | $ 57.89 | $ 85.74 | $ 87.18 |
Stock awards exercised/vested in period, number of shares | (41,755) | ||
Stock awards exercised/vested in period, weighted-average grant date fair value | $ 69.70 | ||
Forfeited/expired in period, number of shares/units | (6,894) | ||
Forfeited/expired in period, weighted-average grant date fair value | $ 81.33 |
Employee Benefit Plans (Options
Employee Benefit Plans (Options Outstanding and Exercisable) (Detail) $ / shares in Units, $ in Thousands | 12 Months Ended |
Dec. 31, 2020USD ($)$ / sharesshares | |
$ 45.01 - $ 50.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Range of Exercise Prices, Minimum | $ 45.01 |
Range of Exercise Prices, Maximum | 50 |
50.01 - 55.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Range of Exercise Prices, Minimum | 50.01 |
Range of Exercise Prices, Maximum | 55 |
65.01 - 70.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Range of Exercise Prices, Minimum | 65.01 |
Range of Exercise Prices, Maximum | 70 |
70.01 - 75.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Range of Exercise Prices, Minimum | 70.01 |
Range of Exercise Prices, Maximum | 75 |
75.01 - 80.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Range of Exercise Prices, Minimum | 75.01 |
Range of Exercise Prices, Maximum | $ 80 |
Options Outstanding [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Outstanding | shares | 1,739,559 |
Weighted-Average Exercise Price, Options Outstanding | $ 66.11 |
Weighted- Average Remaining Contractual Life in Years | 3 years 2 months 15 days |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $ | $ 36,745 |
Options Outstanding [Member] | $ 45.01 - $ 50.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Outstanding | shares | 204,480 |
Weighted-Average Exercise Price, Options Outstanding | $ 48 |
Weighted- Average Remaining Contractual Life in Years | 9 months 25 days |
Options Outstanding [Member] | 50.01 - 55.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Outstanding | shares | 282,204 |
Weighted-Average Exercise Price, Options Outstanding | $ 54.56 |
Weighted- Average Remaining Contractual Life in Years | 1 year 9 months 21 days |
Options Outstanding [Member] | 65.01 - 70.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Outstanding | shares | 509,221 |
Weighted-Average Exercise Price, Options Outstanding | $ 65.11 |
Weighted- Average Remaining Contractual Life in Years | 4 years 8 months 1 day |
Options Outstanding [Member] | 70.01 - 75.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Outstanding | shares | 275,654 |
Weighted-Average Exercise Price, Options Outstanding | $ 71.39 |
Weighted- Average Remaining Contractual Life in Years | 2 years 9 months 18 days |
Options Outstanding [Member] | 75.01 - 80.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Outstanding | shares | 468,000 |
Weighted-Average Exercise Price, Options Outstanding | $ 78.95 |
Weighted- Average Remaining Contractual Life in Years | 3 years 8 months 26 days |
Options Exercisable [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Exercisable | shares | 1,739,559 |
Weighted-Average Exercise Price, Options Exercisable | $ 66.11 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ | $ 36,745 |
Options Exercisable [Member] | $ 45.01 - $ 50.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Exercisable | shares | 204,480 |
Weighted-Average Exercise Price, Options Exercisable | $ 48 |
Options Exercisable [Member] | 50.01 - 55.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Exercisable | shares | 282,204 |
Weighted-Average Exercise Price, Options Exercisable | $ 54.56 |
Options Exercisable [Member] | 65.01 - 70.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Exercisable | shares | 509,221 |
Weighted-Average Exercise Price, Options Exercisable | $ 65.11 |
Options Exercisable [Member] | 70.01 - 75.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Exercisable | shares | 275,654 |
Weighted-Average Exercise Price, Options Exercisable | $ 71.39 |
Options Exercisable [Member] | 75.01 - 80.00 [Member] | |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] | |
Number of Shares, Options Exercisable | shares | 468,000 |
Weighted-Average Exercise Price, Options Exercisable | $ 78.95 |
Employee Benefit Plans (Shares
Employee Benefit Plans (Shares Issued in Connection with Stock Compensation Awards) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Retirement Benefits [Abstract] | |||
Shares issued from available treasury stock | 408,563 | 399,224 | 548,238 |
Proceeds from stock option exercises | $ 12,557 | $ 20,770 | $ 31,647 |
Intrinsic value of stock options exercised | 5,365 | 13,713 | 23,292 |
Fair value of stock awards/units vested | $ 9,465 | $ 5,192 | $ 4,212 |
Employee Benefit Plans (Stock-B
Employee Benefit Plans (Stock-Based Compensation Expense) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
Stock options | $ 0 | $ 1,185 | $ 3,652 |
Non-vested stock awards/stock units | 10,240 | 9,339 | 6,983 |
Deferred stock-units | 770 | 780 | 721 |
Performance stock units | 2,908 | 4,642 | 2,587 |
Total | 13,918 | 15,946 | 13,943 |
Income tax benefit | $ 2,142 | $ 2,359 | $ 2,831 |
Employee Benefit Plans (Unrecog
Employee Benefit Plans (Unrecognized Stock-Based Compensation Expense) (Detail) $ in Thousands | 12 Months Ended |
Dec. 31, 2020USD ($) | |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | |
Non-vested stock awards/stock units | $ 18,430 |
Performance stock units | 7,034 |
Total | $ 25,464 |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 2 years 8 months 8 days |
Employee service share-based compensation, Performance stock units,compensation cost not yet recognized,period for recognition | 1 year 11 months 26 days |
Other Non-Interest Income and_3
Other Non-Interest Income and Expense (Narrative) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Other Income and Expenses [Abstract] | |||
Minimum percentage of the aggregate total net interest income and total non interest income required for amounts to be stated separately | 1.00% | 1.00% | 1.00% |
Payment for services provided by related party | $ 551 | $ 567 | $ 568 |
Other Non-Interest Income and_4
Other Non-Interest Income and Expense (Other Non-Interest Income and Expense) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Other Income and Expenses [Abstract] | |||
Other | $ 47,712 | $ 43,563 | $ 46,790 |
Total other non-interest income | 47,712 | 43,563 | 46,790 |
Professional services | 37,253 | 39,238 | 35,941 |
Advertising, promotions and public relations | 34,390 | 38,001 | 32,514 |
Travel/meals and entertainment | 7,109 | 16,459 | 15,030 |
Other | 87,558 | 86,967 | 89,981 |
Total other non-interest expense | $ 166,310 | $ 180,665 | $ 173,466 |
Income Taxes (Narrative) (Detai
Income Taxes (Narrative) (Detail) - USD ($) | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Income Tax Disclosure [Abstract] | |||
Unrecognized tax benefits | $ 0 | $ 0 | $ 0 |
U.S. federal statutory income tax rate | 21.00% | 21.00% | 21.00% |
Valuation allowance | $ 0 | $ 0 |
Income Taxes (Income Tax Expens
Income Taxes (Income Tax Expense) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Income Tax Disclosure [Abstract] | |||
Current income tax expense | $ 36,002 | $ 48,256 | $ 840 |
Deferred income tax expense (benefit) | (15,832) | 7,614 | 52,923 |
Income tax expense, as reported | $ 20,170 | $ 55,870 | $ 53,763 |
Effective tax rate | 5.70% | 11.20% | 10.60% |
Income Taxes (Income Tax Comput
Income Taxes (Income Tax Computed by Applying U.S. Federal Statutory Income Tax Rate) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Income Tax Disclosure [Abstract] | |||
Income tax expense computed at the statutory rate | $ 73,777 | $ 104,888 | $ 106,823 |
Effect of tax-exempt interest | (51,624) | (49,166) | (49,700) |
Tax benefit on dividends paid in our 401k plan | (1,851) | (1,743) | (1,551) |
Bank owned life insurance income | (783) | (774) | (710) |
Non-deductible compensation | 1,123 | 1,708 | 210 |
Non-deductible FDIC premiums | 1,790 | 1,267 | 1,771 |
Non-deductible meals and entertainment | 786 | 1,299 | 1,193 |
Net tax benefit from stock-based compensation | (852) | (2,447) | (3,865) |
Asset contribution to a charitable trust | (2,556) | 0 | 0 |
Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate | 0 | 0 | (231) |
Other | 360 | 838 | (177) |
Income tax expense, as reported | $ 20,170 | $ 55,870 | $ 53,763 |
Income Taxes (Schedule of Defer
Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Income Tax Disclosure [Abstract] | ||
Lease liabilities under operating leases | $ 67,839 | $ 67,975 |
Allowance for credit losses | 64,573 | 27,860 |
Net actuarial loss on defined benefit post-retirement benefit plans | 13,512 | 12,210 |
Stock-based compensation | 10,033 | 11,211 |
Bonus accrual | 3,961 | 5,055 |
Deferred loan and lease origination fees | 10,252 | 2,254 |
Other | 3,834 | 2,058 |
Total gross deferred tax assets | 174,004 | 128,623 |
Net unrealized gain on securities available for sale and transferred securities | (149,870) | (83,281) |
Right-of-use assets under operating leases | (61,963) | (63,463) |
Premises and equipment | (49,602) | (29,730) |
Intangible assets | (14,596) | (12,642) |
Defined benefit post-retirement benefit plans | (10,081) | (9,419) |
Partnership interests | (2,913) | (2,894) |
Leases | (1,090) | (1,572) |
Other | (1,387) | (1,440) |
Total gross deferred tax liabilities | (291,502) | (204,441) |
Deferred Tax Liabilities, Net | $ (117,498) | $ (75,818) |
Other Comprehensive Income (L_3
Other Comprehensive Income (Loss) (Component of Other Comprehensive Income (Loss)) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Equity [Abstract] | |||
Securities available for sale and transferred securities, Change in net unrealized gain/loss during the period, before tax amount | $ 427,331 | $ 418,556 | $ (182,340) |
Securities available for sale and transferred securities, Change in net unrealized gain on securities transferred to held to maturity, before tax amount | (1,256) | (1,292) | (8,818) |
Securities available for sale and transferred securities, Reclassification adjustment for net (gains) losses included in net income, before tax amount | (108,989) | (293) | 156 |
Total securities available for sale and transferred securities before tax amount | 317,086 | 416,971 | (191,002) |
Change in the net actuarial gain/loss before tax amount | (11,518) | (3,644) | (7,225) |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) before tax amount | 5,319 | 5,623 | 5,002 |
Total defined-benefit post-retirement benefit plans | (6,199) | 1,979 | (2,223) |
Other comprehensive income (loss), before tax | 310,887 | 418,950 | (193,225) |
Securities available for sale and transferred securities, Change in net unrealized gain/loss during the period, tax expense (benefit) | 89,741 | 87,897 | (38,292) |
Securities available for sale and transferred securities, change in net unrealized gain on securities transfers to held-to-maturity, tax expense benefit | (264) | (271) | (1,853) |
Securities available for sale and transferred securities, Reclassification adjustment for net (gains) losses included in net income, tax expense (benefit) | (22,888) | (62) | 33 |
Total securities available for sale and transferred securities, tax expense (benefit) | 66,589 | 87,564 | (40,112) |
Change in the net actuarial gain/loss, tax expense (benefit) | (2,419) | (765) | (1,517) |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a componet of net periodic cost (benefit) , tax expense (benefit) | 1,117 | 1,181 | 1,051 |
Total defined-benefit post-retirement benefit plans, tax expense (benefit) | (1,302) | 416 | (466) |
Total other comprehensive income, tax expense (benefit) | 65,287 | 87,980 | (40,578) |
Securities available for sale and transferred securities, change in net unrealized gain/loss during the period, net of tax amount | 337,590 | 330,659 | (144,048) |
Securities available for sale and transferred securities. change in net unrealized gain on securities transfers to held-to-maturity, net of tax amount | (992) | (1,021) | (6,965) |
Securities available for sale and securities transferred, reclassification adjustment for net (gains) losses included in net income, net of tax amount | (86,101) | (231) | 123 |
Total securities available for sale and transferred securities, net of tax amount | 250,497 | 329,407 | (150,890) |
Change in the net actuarial gain/loss, net of tax amount | (9,099) | (2,879) | (5,708) |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a componet of net periodic cost (benefit), net of tax amount | 4,202 | 4,442 | 3,951 |
Total defined-benefit post-retirement benefit plans, net of tax amount | (4,897) | 1,563 | (1,757) |
Other comprehensive income (loss), net of tax | $ 245,600 | $ 330,970 | $ (152,647) |
Other Comprehensive Income (Sch
Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income, Net of Tax) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||
Beginning Balance | $ 267,370 | ||
Net other comprehensive income (loss) during period | 245,600 | $ 330,970 | $ (152,647) |
Ending Balance | 512,970 | 267,370 | |
Securities Available For Sale [Member] | |||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||
Beginning Balance | 313,304 | (16,103) | 117,230 |
Other comprehensive income (loss) before reclassification | 336,598 | 329,638 | (151,013) |
Reclassification of amounts included in net income | (86,101) | (231) | 123 |
Net other comprehensive income (loss) during period | 250,497 | 329,407 | (150,890) |
Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act | 17,557 | ||
Ending Balance | 563,801 | 313,304 | (16,103) |
Defined Benefit Plans [Member] | |||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||
Beginning Balance | (45,934) | (47,497) | (37,718) |
Other comprehensive income (loss) before reclassification | (9,099) | (2,879) | (5,708) |
Reclassification of amounts included in net income | 4,202 | 4,442 | 3,951 |
Net other comprehensive income (loss) during period | (4,897) | 1,563 | (1,757) |
Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act | (8,022) | ||
Ending Balance | (50,831) | (45,934) | (47,497) |
AOCI Attributable to Parent [Member] | |||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||
Beginning Balance | 267,370 | (63,600) | 79,512 |
Other comprehensive income (loss) before reclassification | 327,499 | 326,759 | (156,721) |
Reclassification of amounts included in net income | (81,899) | 4,211 | 4,074 |
Net other comprehensive income (loss) during period | 245,600 | 330,970 | (152,647) |
Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act | 9,535 | ||
Ending Balance | $ 512,970 | $ 267,370 | $ (63,600) |
Derivative Financial Instrume_3
Derivative Financial Instruments (Narrative) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Derivative [Line Items] | |||
Weighted-average strike rate for outstanding interest rate caps | 3.36% | ||
Approximate credit exposure related to swaps with bank customers | $ 112,600 | ||
Cash collateral on deposit with other financial institutions | 74,000 | $ 37,500 | |
Interest Rate Swaps With Upstream Financial Institution Counterparties [Member] | |||
Derivative [Line Items] | |||
Approximate credit exposure related to swaps with bank customers | 16,900 | ||
Not Designated as Hedging Instrument [Member] | Financial Institution Counterparties Loan Lease Interest Rate Swaps Liabilities [Member] | |||
Derivative [Line Items] | |||
Estimated fair value of derivative contracts cleared through Chicago Mercantile Exchange | 0 | 0 | |
Not Designated as Hedging Instrument [Member] | Put Option [Member] | Other Non-Interest Income [Member] | |||
Derivative [Line Items] | |||
Gains included in other income from the sale of put options | $ 5,992 | $ 750 | $ 0 |
Derivative Financial Instrume_4
Derivative Financial Instruments (Schedule of Notional Amounts and Estimated Fair Values of Interest Rate Derivative Contracts Outstanding) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Designated as Hedging Instrument [Member] | Financial Institution Counterparties Loan Lease Interest Rate Swaps Assets [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Derivative Asset, Notional Amount | $ 0 | $ 2,545 |
Estimated Fair Value | 0 | 6 |
Designated as Hedging Instrument [Member] | Financial Institution Counterparties Loan Lease Interest Rate Swaps Liabilities [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Derivative Liability, Notional Amount | 3,724 | 6,000 |
Estimated Fair Value | (134) | (138) |
Not Designated as Hedging Instrument [Member] | Financial Institution Counterparties Loan Lease Interest Rate Swaps Assets [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Derivative Asset, Notional Amount | 0 | 122,788 |
Estimated Fair Value | 0 | 67 |
Not Designated as Hedging Instrument [Member] | Financial Institution Counterparties Loan Lease Interest Rate Swaps Liabilities [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Derivative Liability, Notional Amount | 1,173,173 | 1,002,860 |
Estimated Fair Value | (33,812) | (19,483) |
Not Designated as Hedging Instrument [Member] | Financial Institution Counterparties Loan Lease Interest Rate Caps Assets [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Derivative Asset, Notional Amount | 356,601 | 107,835 |
Estimated Fair Value | 1,241 | 266 |
Not Designated as Hedging Instrument [Member] | Customer Counterparties Loan Lease Interest Rate Swaps Assets [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Derivative Asset, Notional Amount | 1,173,173 | 1,002,860 |
Estimated Fair Value | 84,424 | 43,857 |
Not Designated as Hedging Instrument [Member] | Customer Counterparties Loan Lease Interest Rate Swaps Liabilities [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Derivative Liability, Notional Amount | 0 | 122,788 |
Estimated Fair Value | 0 | (310) |
Not Designated as Hedging Instrument [Member] | Customer Counterparties Loan Lease Interest Rate Caps Liabilities [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Derivative Liability, Notional Amount | 356,601 | 107,835 |
Estimated Fair Value | $ (1,241) | $ (266) |
Derivative Financial Instrume_5
Derivative Financial Instruments (Schedule of Weighted-Average Rates Paid and Received for Interest Rate Swaps Outstanding) (Detail) | Dec. 31, 2020 |
Weighted Average Interest Rate Paid [Member] | |
Short-duration Insurance Contracts, Discounted Liabilities [Line Items] | |
Fair Value Hedge Loan Lease Interest Rate Swaps | 3.27% |
Weighted-Average Interest Rate Received [Member] | |
Short-duration Insurance Contracts, Discounted Liabilities [Line Items] | |
Fair Value Hedge Loan Lease Interest Rate Swaps | 0.15% |
Financial Institution Counterparties [Member] | Weighted Average Interest Rate Paid [Member] | |
Short-duration Insurance Contracts, Discounted Liabilities [Line Items] | |
Non-hedging interest rate swaps - financial institution counterparties | 3.97% |
Financial Institution Counterparties [Member] | Weighted-Average Interest Rate Received [Member] | |
Short-duration Insurance Contracts, Discounted Liabilities [Line Items] | |
Non-hedging interest rate swaps - financial institution counterparties | 1.95% |
Customer Counterparties [Member] | Weighted Average Interest Rate Paid [Member] | |
Short-duration Insurance Contracts, Discounted Liabilities [Line Items] | |
Non-hedging interest rate swaps - customer counterparties | 1.95% |
Customer Counterparties [Member] | Weighted-Average Interest Rate Received [Member] | |
Short-duration Insurance Contracts, Discounted Liabilities [Line Items] | |
Non-hedging interest rate swaps - customer counterparties | 3.97% |
Derivative Financial Instrume_6
Derivative Financial Instruments (Schedule of Notional Amounts and Estimated Fair Values of Commodity Derivative Positions) (Detail) bbl in Thousands, MMBTU in Thousands, $ in Thousands | Dec. 31, 2020USD ($)bblMMBTU | Dec. 31, 2019USD ($)bblMMBTU |
Financial Institution Counterparties [Member] | Oil Commodity Derivative [Member] | ||
Derivative Instruments [Line Items] | ||
Oil/Natural Gas Derivative Assets Notional Amount | bbl | 3,056 | 1,214 |
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 8,341 | $ 2,796 |
Oil/Natural Gas Derivative Liabilities Notional Amount | bbl | 6,391 | 2,148 |
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (32,112) | $ (6,916) |
Financial Institution Counterparties [Member] | Natural Gas Commodity Derivative [Member] | ||
Derivative Instruments [Line Items] | ||
Oil/Natural Gas Derivative Assets Notional Amount | MMBTU | 9,281 | 8,295 |
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 1,529 | $ 2,131 |
Oil/Natural Gas Derivative Liabilities Notional Amount | MMBTU | 15,079 | 2,689 |
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (3,265) | $ (70) |
Customer Counterparties [Member] | Oil Commodity Derivative [Member] | ||
Derivative Instruments [Line Items] | ||
Oil/Natural Gas Derivative Assets Notional Amount | bbl | 6,391 | 2,172 |
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 32,670 | $ 7,208 |
Oil/Natural Gas Derivative Liabilities Notional Amount | bbl | 3,056 | 1,190 |
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (8,264) | $ (2,652) |
Customer Counterparties [Member] | Natural Gas Commodity Derivative [Member] | ||
Derivative Instruments [Line Items] | ||
Oil/Natural Gas Derivative Assets Notional Amount | MMBTU | 17,636 | 2,689 |
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 3,451 | $ 83 |
Oil/Natural Gas Derivative Liabilities Notional Amount | MMBTU | 6,724 | 8,295 |
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (1,458) | $ (2,039) |
Derivative Financial Instrume_7
Derivative Financial Instruments Derivative Financial Instruments (Schedule of Notional Amount and Fair Value of Open Foreign Currency Forward Contract) (Details) $ in Thousands, $ in Thousands | Dec. 31, 2020USD ($) | Dec. 31, 2020CAD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2019CAD ($) |
Financial Institution Counterparties [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | ||||
Derivative Counter Party [Line Items] | ||||
Forward Contracts Liability, Notional Amount | $ 0 | $ 4,593 | ||
Customer Counterparties [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member] | ||||
Derivative Counter Party [Line Items] | ||||
Forward Contracts - Assets, Notional Amount | $ 0 | $ 4,583 | ||
Foreign Exchange Forward [Member] | Financial Institution Counterparties [Member] | ||||
Derivative Counter Party [Line Items] | ||||
Forward Contracts, Liability Estimated Fair Value | $ 0 | $ (33) | ||
Foreign Exchange Forward [Member] | Customer Counterparties [Member] | ||||
Derivative Counter Party [Line Items] | ||||
Forward Contracts - Assets Estimated Fair Value | $ 0 | $ 45 |
Derivative Financial Instrume_8
Derivative Financial Instruments (Schedule of Amounts Related to Interest Rate Derivatives Designated as Hedges of Fair Value) (Detail) - Designated as Hedging Instrument [Member] - Commercial Loan/Lease Interest Rate Swaps [Member] - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Interest Income on Loans [Member] | |||
Derivative Instruments, Gain (Loss) [Line Items] | |||
Amount included in income or expense | $ (111) | $ 86 | $ 25 |
Other Non-Interest Expense [Member] | |||
Derivative Instruments, Gain (Loss) [Line Items] | |||
Amount included in income or expense | $ 9 | $ 0 | $ (1) |
Derivative Financial Instrume_9
Derivative Financial Instruments (Schedule of Amounts Related to Non-Hedging Interest Rate and Commodity Derivatives) (Detail) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Interest Rate Contract [Member] | Other Non-Interest Income [Member] | |||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | |||
Amount included in income or expense | $ 3,413 | $ 2,005 | $ 4,112 |
Interest Rate Contract [Member] | Other Non-Interest Expense [Member] | |||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | |||
Amount included in income or expense | 1 | (1) | 0 |
Commodity Contract [Member] | Other Non-Interest Income [Member] | |||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | |||
Amount included in income or expense | 1,768 | 503 | 795 |
Foreign Exchange Contract [Member] | Other Non-Interest Income [Member] | |||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | |||
Amount included in income or expense | 28 | 51 | 246 |
Put Option [Member] | Other Non-Interest Income [Member] | |||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | |||
Amount included in income or expense | $ 5,992 | $ 750 | $ 0 |
Balance Sheet Offsetting - Fina
Balance Sheet Offsetting - Financial Instruments Eligible for Offset Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivative, Financial Assets | $ 11,111 | $ 5,266 |
Gross Amount Offset, Derivatives, Financial Assets | 0 | 0 |
Net Amount Recognized, Derivative, Financial Assets | 11,111 | 5,266 |
Gross Amount Recognized, Resell Agreements, Financial Assets | 0 | 31,299 |
Gross Amount Offset, Resell Agreements, Financial Assets | 0 | 0 |
Net Amount Recognized, Resell Agreements, Financial Assets | 0 | 31,299 |
Gross Amount Recognized, Financial Assets | 11,111 | 36,565 |
Gross Amount Offset, Financial Assets | 0 | 0 |
Net Amount Recognized, Financial Assets | 11,111 | 36,565 |
Gross Amount Recognized, Derivative, Financial Liabilities | 69,323 | 26,640 |
Gross Amount Offset, Derivative, Financial Liabilities | 0 | 0 |
Net Amount Recognized, Derivative, Financial Liabilities | 69,323 | 26,640 |
Gross Amount Recognized, Repurchase Agreements, Financial Liabilities | 2,068,147 | 1,668,142 |
Gross Amount Offset, Repurchase Agreements, Financial Liabilities | 0 | 0 |
Net Amount Recognized, Repurchase Agreements, Financial Liabilities | 2,068,147 | 1,668,142 |
Gross Amount Recognized, Financial Liabilities | 2,137,470 | 1,694,782 |
Gross Amount Offset, Financial Liabilities | 0 | 0 |
Net Amount Recognized, Financial Liabilities | 2,137,470 | 1,694,782 |
Loan Lease Interest Rate Swaps And Caps [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivative, Financial Assets | 1,241 | 339 |
Gross Amount Offset, Derivatives, Financial Assets | 0 | 0 |
Net Amount Recognized, Derivative, Financial Assets | 1,241 | 339 |
Commodity Swaps And Options [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivative, Financial Assets | 9,870 | 4,927 |
Gross Amount Offset, Derivatives, Financial Assets | 0 | 0 |
Net Amount Recognized, Derivative, Financial Assets | 9,870 | 4,927 |
Gross Amount Recognized, Derivative, Financial Liabilities | 35,377 | 6,986 |
Gross Amount Offset, Derivative, Financial Liabilities | 0 | 0 |
Net Amount Recognized, Derivative, Financial Liabilities | 35,377 | 6,986 |
Foreign Currency Forward Contracts [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivative, Financial Liabilities | 0 | 33 |
Gross Amount Offset, Derivative, Financial Liabilities | 0 | 0 |
Net Amount Recognized, Derivative, Financial Liabilities | 0 | 33 |
Loan Lease Interest Rate Swaps [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivative, Financial Liabilities | 33,946 | 19,621 |
Gross Amount Offset, Derivative, Financial Liabilities | 0 | 0 |
Net Amount Recognized, Derivative, Financial Liabilities | $ 33,946 | $ 19,621 |
Balance Sheet Offsetting - Fi_2
Balance Sheet Offsetting - Financial Instruments Derivative Assets Liabilities and Resell Agreements Net of Amount Not Offset (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | $ 11,111 | $ 5,266 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | (11,111) | (5,236) |
Gross Amounts Not Offset, Collateral, Derivatives, Financial Assets | 0 | 0 |
Net Amount, Derivatives, Financial Assets | 0 | 30 |
Net Amount Recognized, Resell Agreements, Financial Assets | 0 | 31,299 |
Gross Amounts Not Offset, Financial Instruments, Resell Agreements, Financial Assets | 0 | 0 |
Gross Amounts Not Offset, Collateral, Resell Agreements, Financial Assets | 0 | (31,299) |
Net Amount, Resell Agreements, Financial Assets | 0 | 0 |
Net Amount Recognized, Total Financial Assets | 11,111 | 36,565 |
Gross Amounts Not Offset, Collateral, Financial Assets | 0 | (31,299) |
Net Amount, Financial Assets | 0 | 30 |
Net Amount Recognized, Derivatives, Financial Liabilities | 69,323 | 26,640 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities | (11,111) | (5,236) |
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities | (57,031) | (21,404) |
Net Amount, Derivatives, Financial Liabilities | 1,181 | 0 |
Net Amount Recognized, Repurchase Agreements, Financial Liabilities | 2,068,147 | 1,668,142 |
Gross Amounts Not Offset, Financial Instruments, Repurchase Agreements, Financial Liabilities | 0 | 0 |
Gross Amounts Not Offset, Collateral, Repurchase Agreements, Financial Liabilities | (2,068,147) | (1,668,142) |
Net Amount, Repurchase Agreements, Financial Liabilities | 0 | 0 |
Net Amount Recognized, Financial Liabilities | 2,137,470 | 1,694,782 |
Gross Amounts Not Offset, Collateral, Financial Liabilities | (2,125,178) | (1,689,546) |
Net Amount, Financial Liabilities | 1,181 | 0 |
Counterparty A [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | 2 | 39 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | (2) | (39) |
Gross Amounts Not Offset, Collateral, Derivatives, Financial Assets | 0 | 0 |
Net Amount, Derivatives, Financial Assets | 0 | 0 |
Net Amount Recognized, Derivatives, Financial Liabilities | 6,430 | 5,192 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities | (2) | (39) |
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities | (6,428) | (5,153) |
Net Amount, Derivatives, Financial Liabilities | 0 | 0 |
Counterparty B [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | 5,838 | 1,650 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | (5,838) | (1,650) |
Gross Amounts Not Offset, Collateral, Derivatives, Financial Assets | 0 | 0 |
Net Amount, Derivatives, Financial Assets | 0 | 0 |
Net Amount Recognized, Derivatives, Financial Liabilities | 20,722 | 7,424 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities | (5,838) | (1,650) |
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities | (14,700) | (5,774) |
Net Amount, Derivatives, Financial Liabilities | 184 | 0 |
Counterparty C [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | 0 | 1 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | 0 | (1) |
Gross Amounts Not Offset, Collateral, Derivatives, Financial Assets | 0 | 0 |
Net Amount, Derivatives, Financial Assets | 0 | 0 |
Net Amount Recognized, Derivatives, Financial Liabilities | 71 | 135 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities | 0 | (1) |
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities | (71) | (134) |
Net Amount, Derivatives, Financial Liabilities | 0 | 0 |
Other Counterparties [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | 5,271 | 3,576 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | (5,271) | (3,546) |
Gross Amounts Not Offset, Collateral, Derivatives, Financial Assets | 0 | 0 |
Net Amount, Derivatives, Financial Assets | 0 | 30 |
Net Amount Recognized, Derivatives, Financial Liabilities | 42,100 | 13,889 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities | (5,271) | (3,546) |
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities | (35,832) | (10,343) |
Net Amount, Derivatives, Financial Liabilities | $ 997 | $ 0 |
Balance Sheet Offsetting Bala_2
Balance Sheet Offsetting Balance Sheet Offsetting - Remaining Contractual Maturity of the Securities Sold Under Agreement to Repurchase (Details) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2020 | Dec. 31, 2019 | |
Remaining Contractual Maturity of the Securities Sold Under Agreement to Repurchase [Line Items] | ||
Remaining contractual maturity of the agreements overnight and continuous | $ 2,068,147 | $ 1,668,142 |
Remaining contractual maturity of the agreements up to 30 Days | 0 | 0 |
Remaining contractual maturity of the agreements 30 to 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements greater than 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements total | 2,068,147 | 1,668,142 |
Securities Sold under Agreements to Repurchase, Gross | 2,068,147 | 1,668,142 |
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities | 0 | 0 |
US Treasury [Member] | ||
Remaining Contractual Maturity of the Securities Sold Under Agreement to Repurchase [Line Items] | ||
Remaining contractual maturity of the agreements overnight and continuous | 692,860 | 435,904 |
Remaining contractual maturity of the agreements up to 30 Days | 0 | 0 |
Remaining contractual maturity of the agreements 30 to 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements greater than 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements total | 692,860 | 435,904 |
Residential Mortgage Backed Securities [Member] | ||
Remaining Contractual Maturity of the Securities Sold Under Agreement to Repurchase [Line Items] | ||
Remaining contractual maturity of the agreements overnight and continuous | 1,375,287 | 1,232,238 |
Remaining contractual maturity of the agreements up to 30 Days | 0 | 0 |
Remaining contractual maturity of the agreements 30 to 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements greater than 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements total | $ 1,375,287 | $ 1,232,238 |
Fair Value Measurements (Narrat
Fair Value Measurements (Narrative) (Detail) - Commodity Swaps And Options [Member] - Level 3 [Member] | Dec. 31, 2020Grade |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Weighted Average Risk Grade | 14 |
Weighted average loss severity in the event of default on commodity swaps | 10.00% |
Fair Value Measurements (Financ
Fair Value Measurements (Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | $ 10,437,565 | $ 11,269,591 |
Trading account securities | 24,456 | 24,298 |
Derivative assets: | 11,111 | 5,266 |
Derivative liabilities: | 69,323 | 26,640 |
Interest Rate Swaps Caps And Floors [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets: | 85,665 | 44,196 |
Derivative liabilities: | 35,187 | 20,197 |
Commodity Swaps And Options [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets: | 45,991 | 12,218 |
Derivative liabilities: | 45,099 | 11,677 |
Foreign Exchange Forward [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets: | 0 | 45 |
Derivative liabilities: | 0 | 33 |
US Treasury Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 1,119,633 | 1,948,133 |
Trading account securities | 23,996 | 24,298 |
Residential Mortgage Backed Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 1,987,679 | 2,207,594 |
US States and Political Subdivisions Debt Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 7,287,902 | 7,070,997 |
Trading account securities | 460 | |
Other Investments [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 42,351 | 42,867 |
Level 1 [Member] | Foreign Exchange Forward [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets: | 0 | 45 |
Derivative liabilities: | 0 | 33 |
Level 1 [Member] | US Treasury Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 1,119,633 | 1,948,133 |
Trading account securities | 23,996 | 24,298 |
Level 2 [Member] | Interest Rate Swaps Caps And Floors [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets: | 85,665 | 44,196 |
Derivative liabilities: | 35,187 | 20,197 |
Level 2 [Member] | Commodity Swaps And Options [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets: | 45,535 | 12,218 |
Derivative liabilities: | 45,099 | 11,677 |
Level 2 [Member] | Residential Mortgage Backed Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 1,987,679 | 2,207,594 |
Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 7,287,902 | 7,070,997 |
Trading account securities | 460 | |
Level 2 [Member] | Other Investments [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 42,351 | 42,867 |
Level 3 [Member] | Commodity Swaps And Options [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets: | 456 | 0 |
US Treasury Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 1,119,633 | 1,948,133 |
Trading account securities | 23,996 | 24,298 |
Residential Mortgage Backed Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 1,987,679 | 2,207,594 |
US States and Political Subdivisions Debt Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | 7,287,902 | 7,070,997 |
Trading account securities | 460 | 0 |
Other Investments [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, at estimated fair value | $ 42,351 | $ 42,867 |
Fair Value Measurements (Impair
Fair Value Measurements (Impaired Loans Remeasured and Reported at Fair Value of Underlying Collateral) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Carrying value of impaired loans before allocations | $ 99,453 | ||
Specific valuation allowance allocations | (28,483) | ||
Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Carrying value of impaired loans before allocations | $ 1,559 | 2,354 | $ 12,517 |
Specific valuation allowance allocations | (450) | (383) | (2,599) |
Fair value | 1,109 | 1,971 | 9,918 |
Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Carrying value of impaired loans before allocations | 34,302 | 65,176 | 22,688 |
Specific valuation allowance allocations | (11,151) | (18,019) | |
Reversal of specific valuation allowance allocations | 9,260 | ||
Fair value | $ 23,151 | $ 47,157 | $ 31,948 |
Fair Value Measurements (Forecl
Fair Value Measurements (Foreclosed Assets Remeasured and Reported at Fair Value) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Foreclosed Assets Remeasured at Initial Recognition Carrying Value Of Foreclosed Assets Prior To Remeasurement | $ 0 | $ 1,348 | $ 2,899 |
Foreclosed Assets Remeasured at Initial Recognition Charge Offs Recognized In Allowance For Loan Losses | 0 | (76) | 0 |
Fair Value of Foreclosed Assets Remeasured at Initial Recognition | 0 | 1,272 | 2,899 |
Foreclosed Assets Remeasured Subsequent to Initial Recognition Carrying Value Of Foreclosed Assets Prior To Remeasurement | 328 | 0 | 1,823 |
Foreclosed Assets Remeasured Subsequent to initial Recognition Write Downs Included In Other Non Interest Expense | (231) | 0 | (473) |
Fair Value of Foreclosed Assets Remeasured Subsequent to Initial Recognition | $ 97 | $ 0 | $ 1,350 |
Fair Value Measurements (Estima
Fair Value Measurements (Estimated Fair Values of Financial Instruments) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Cash and cash equivalents | $ 10,288,853 | $ 3,788,181 | $ 3,955,779 | $ 5,053,047 |
Securities held to maturity | 1,945,833 | 2,030,005 | ||
Loans, net | 17,218,132 | 14,618,165 | ||
Deposits | 35,015,761 | 27,639,564 | ||
Federal funds purchased and repurchase agreements | 2,116,997 | 1,695,342 | ||
Junior subordinated deferrable interest debentures | 136,357 | 136,299 | ||
Subordinated notes payable and other borrowings | 99,021 | 98,865 | ||
Carrying Amount [Member] | Level 2 [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Cash and cash equivalents | 10,288,853 | 3,788,181 | ||
Securities held to maturity | 1,945,673 | 2,030,005 | ||
Cash surrender value of life insurance policies | 189,984 | 187,156 | ||
Accrued interest receivable | 181,432 | 183,850 | ||
Deposits | 35,015,761 | 27,639,564 | ||
Federal funds purchased and repurchase agreements | 2,116,997 | 1,695,342 | ||
Junior subordinated deferrable interest debentures | 136,357 | 136,299 | ||
Subordinated notes payable and other borrowings | 99,021 | 98,865 | ||
Accrued interest payable | 8,127 | 12,393 | ||
Carrying Amount [Member] | Level 3 [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Loans, net | 17,218,132 | 14,618,165 | ||
Estimated Fair Value [Member] | Level 2 [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Cash and cash equivalents | 10,288,853 | 3,788,181 | ||
Securities held to maturity | 2,052,896 | 2,048,675 | ||
Cash surrender value of life insurance policies | 189,984 | 187,156 | ||
Accrued interest receivable | 181,432 | 183,850 | ||
Deposits | 35,018,185 | 27,641,255 | ||
Federal funds purchased and repurchase agreements | 2,116,997 | 1,695,342 | ||
Junior subordinated deferrable interest debentures | 137,115 | 137,115 | ||
Subordinated notes payable and other borrowings | 115,717 | 89,077 | ||
Accrued interest payable | 8,127 | 12,393 | ||
Estimated Fair Value [Member] | Level 3 [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Loans, net | $ 17,390,683 | $ 14,654,615 |
Operating Segments Operating Se
Operating Segments Operating Segments - Additional Information (Details) $ in Billions | 12 Months Ended | ||
Dec. 31, 2020USD ($)Segment | Dec. 31, 2019USD ($) | Dec. 31, 2018USD ($) | |
Segment Reporting Information [Line Items] | |||
Number of operating segments | Segment | 2 | ||
Frost Wealth Advisors [Member] | |||
Segment Reporting Information [Line Items] | |||
Fair value of off-balance sheet managed and custody assets | $ | $ 38.6 | $ 37.8 | $ 33.3 |
Operating Segments (Summary of
Operating Segments (Summary of Operating Results by Segment) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Segment Reporting Information [Line Items] | |||
Net interest income (expense) | $ 976,001 | $ 1,004,005 | $ 957,892 |
Credit loss expense | 241,230 | 33,759 | 21,685 |
Non-interest income | 465,454 | 363,902 | 351,286 |
Non-interest expense | 848,904 | 834,679 | 778,812 |
Income before income taxes | 351,321 | 499,469 | 508,681 |
Income tax expense (benefit) | 20,170 | 55,870 | 53,763 |
Net income | 331,151 | 443,599 | 454,918 |
Preferred stock dividends | 2,016 | 8,063 | 8,063 |
Redemption of preferred stock | 5,514 | 0 | 0 |
Net income available to common shareholders | 323,621 | 435,536 | 446,855 |
Revenues from (expenses to) external customers | 1,441,455 | 1,367,907 | 1,309,178 |
Average assets | 37,961,000 | 32,086,000 | 31,030,000 |
Banking [Member] | |||
Segment Reporting Information [Line Items] | |||
Net interest income (expense) | 981,441 | 1,010,368 | 963,757 |
Credit loss expense | 241,230 | 33,758 | 21,685 |
Non-interest income | 321,136 | 218,447 | 213,763 |
Non-interest expense | 718,519 | 703,121 | 657,376 |
Income before income taxes | 342,828 | 491,936 | 498,459 |
Income tax expense (benefit) | 20,347 | 55,520 | 52,928 |
Net income | 322,481 | 436,416 | 445,531 |
Preferred stock dividends | 0 | 0 | 0 |
Redemption of preferred stock | 0 | ||
Net income available to common shareholders | 322,481 | 436,416 | 445,531 |
Revenues from (expenses to) external customers | 1,302,577 | 1,228,815 | 1,177,520 |
Average assets | 37,892,000 | 32,019,000 | 30,964,000 |
Frost Wealth Advisors [Member] | |||
Segment Reporting Information [Line Items] | |||
Net interest income (expense) | 2,776 | 4,001 | 4,083 |
Credit loss expense | 0 | 1 | 0 |
Non-interest income | 145,268 | 145,905 | 138,045 |
Non-interest expense | 123,630 | 124,622 | 114,166 |
Income before income taxes | 24,414 | 25,283 | 27,962 |
Income tax expense (benefit) | 5,127 | 5,308 | 5,872 |
Net income | 19,287 | 19,975 | 22,090 |
Preferred stock dividends | 0 | 0 | 0 |
Redemption of preferred stock | 0 | ||
Net income available to common shareholders | 19,287 | 19,975 | 22,090 |
Revenues from (expenses to) external customers | 148,044 | 149,906 | 142,128 |
Average assets | 59,000 | 56,000 | 54,000 |
Non-Banks [Member] | |||
Segment Reporting Information [Line Items] | |||
Net interest income (expense) | (8,216) | (10,364) | (9,948) |
Credit loss expense | 0 | 0 | 0 |
Non-interest income | (950) | (450) | (522) |
Non-interest expense | 6,755 | 6,936 | 7,270 |
Income before income taxes | (15,921) | (17,750) | (17,740) |
Income tax expense (benefit) | (5,304) | (4,958) | (5,037) |
Net income | (10,617) | (12,792) | (12,703) |
Preferred stock dividends | 2,016 | 8,063 | 8,063 |
Redemption of preferred stock | 5,514 | ||
Net income available to common shareholders | (18,147) | (20,855) | (20,766) |
Revenues from (expenses to) external customers | (9,166) | (10,814) | (10,470) |
Average assets | $ 10,000 | $ 11,000 | $ 12,000 |
Condensed Financial Statement_3
Condensed Financial Statements of Parent Company (Schedule of Condensed Balance Sheets) (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 |
Condensed Financial Statements, Captions [Line Items] | ||||
Cash | $ 529,454 | $ 581,857 | ||
Resell agreements | 775 | 356,374 | ||
Cash and cash equivalents | 10,288,853 | 3,788,181 | $ 3,955,779 | $ 5,053,047 |
Total assets | 42,391,317 | 34,027,428 | ||
Junior subordinated deferrable interest debentures, net of unamortized issuance costs | 136,357 | 136,299 | ||
Subordinated notes, net of unamortized issuance costs | 99,021 | 98,865 | ||
Accrued interest payable and other liabilities | 730,165 | 545,690 | ||
Total liabilities | 38,098,301 | 30,115,760 | ||
Shareholders’ Equity | 4,293,016 | 3,911,668 | $ 3,368,917 | $ 3,297,863 |
Total liabilities and shareholders’ equity | 42,391,317 | 34,027,428 | ||
Parent Company [Member] | ||||
Condensed Financial Statements, Captions [Line Items] | ||||
Cash | 381,240 | 9,116 | ||
Resell agreements | 0 | 258,000 | ||
Cash and cash equivalents | 381,240 | 267,116 | ||
Investment in subsidiaries | 4,155,619 | 3,896,962 | ||
Accrued interest receivable and other assets | 2,164 | 2,545 | ||
Total assets | 4,539,023 | 4,166,623 | ||
Junior subordinated deferrable interest debentures, net of unamortized issuance costs | 136,357 | 136,299 | ||
Subordinated notes, net of unamortized issuance costs | 99,021 | 98,865 | ||
Accrued interest payable and other liabilities | 10,629 | 19,791 | ||
Total liabilities | 246,007 | 254,955 | ||
Shareholders’ Equity | 4,293,016 | 3,911,668 | ||
Total liabilities and shareholders’ equity | $ 4,539,023 | $ 4,166,623 |
Condensed Financial Statement_4
Condensed Financial Statements of Parent Company (Schedule of Condensed Statements of Income) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Condensed Financial Statements, Captions [Line Items] | |||
Total interest income | $ 1,021,035 | $ 1,133,785 | $ 1,051,198 |
Interest expense | 45,034 | 129,780 | 93,306 |
Other | 166,310 | 180,665 | 173,466 |
Income before income taxes and equity in undistributed earnings of subsidiaries | 351,321 | 499,469 | 508,681 |
Income tax benefit | (20,170) | (55,870) | (53,763) |
Net income | 331,151 | 443,599 | 454,918 |
Preferred stock dividends | 2,016 | 8,063 | 8,063 |
Redemption of preferred stock | 5,514 | 0 | 0 |
Net income available to common shareholders | 323,621 | 435,536 | 446,855 |
Parent Company [Member] | |||
Condensed Financial Statements, Captions [Line Items] | |||
Dividend income paid by Frost Bank | 298,884 | 234,531 | 223,371 |
Dividend income paid by non-banks | 736 | 1,822 | 953 |
Interest and other income | 446 | 2,868 | 1,828 |
Total interest income | 300,066 | 239,221 | 226,152 |
Interest expense | 8,216 | 10,363 | 9,948 |
Salaries and employee benefits | 1,581 | 1,551 | 1,973 |
Other | 6,833 | 7,033 | 7,016 |
Total expenses | 16,630 | 18,947 | 18,937 |
Income before income taxes and equity in undistributed earnings of subsidiaries | 283,436 | 220,274 | 207,215 |
Income tax benefit | 5,406 | 5,135 | 5,218 |
Equity in undistributed earnings of subsidiaries | 42,309 | 218,190 | 242,485 |
Net income | 331,151 | 443,599 | 454,918 |
Preferred stock dividends | 2,016 | 8,063 | 8,063 |
Redemption of preferred stock | 5,514 | 0 | 0 |
Net income available to common shareholders | $ 323,621 | $ 435,536 | $ 446,855 |
Condensed Financial Statement_5
Condensed Financial Statements of Parent Company (Schedule of Condensed Statements of Cash Flows) (Detail) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Condensed Financial Statements, Captions [Line Items] | |||
Net income | $ 331,151 | $ 443,599 | $ 454,918 |
Stock-based compensation | 13,918 | 15,946 | 13,943 |
Net tax benefit from stock-based compensation | 852 | 2,447 | 3,865 |
Net cash provided by (used in) operating activities | 524,243 | 634,090 | 562,388 |
Net cash provided by (used in) investing activities | (1,631,047) | (1,386,750) | (1,913,320) |
Redemption of Series A preferred stock | (150,000) | 0 | 0 |
Proceeds from issuance of Series B preferred stock | 145,452 | 0 | 0 |
Proceeds from stock option exercises | 12,557 | 20,770 | 31,647 |
Purchase of treasury stock | (15,785) | (68,793) | (101,010) |
Treasury stock issued to 401(k) stock purchase plan | 10,307 | 0 | 0 |
Cash dividends paid on preferred stock | (2,016) | (8,063) | (8,063) |
Cash dividends paid on common stock | (180,584) | (177,006) | (165,449) |
Net cash provided by (used in) financing activities | 7,607,476 | 585,062 | 253,664 |
Net change in cash and cash equivalents | 6,500,672 | (167,598) | (1,097,268) |
Parent Company [Member] | |||
Condensed Financial Statements, Captions [Line Items] | |||
Net income | 331,151 | 443,599 | 454,918 |
Equity in undistributed earnings of subsidiaries | (42,309) | (218,190) | (242,485) |
Stock-based compensation | 770 | 780 | 721 |
Net tax benefit from stock-based compensation | 370 | 240 | 304 |
Net change in other assets and other liabilities | (8,937) | 22,216 | (12,709) |
Net cash provided by (used in) operating activities | 281,045 | 248,645 | 200,749 |
Net cash provided by (used in) investing activities | 0 | 0 | 0 |
Redemption of Series A preferred stock | (150,000) | 0 | 0 |
Proceeds from issuance of Series B preferred stock | 145,452 | 0 | 0 |
Proceeds from stock option exercises | 12,557 | 20,770 | 31,647 |
Proceeds from stock-based compensation activities of subsidiaries | 13,148 | 15,166 | 13,222 |
Purchase of treasury stock | (15,785) | (68,793) | (101,010) |
Treasury stock issued to 401(k) stock purchase plan | 10,307 | 0 | 0 |
Cash dividends paid on preferred stock | (2,016) | (8,063) | (8,063) |
Cash dividends paid on common stock | (180,584) | (177,006) | (165,449) |
Net cash provided by (used in) financing activities | (166,921) | (217,926) | (229,653) |
Net change in cash and cash equivalents | 114,124 | 30,719 | (28,904) |
Cash and cash equivalents at beginning of year | 267,116 | 236,397 | 265,301 |
Cash and cash equivalents at end of year | $ 381,240 | $ 267,116 | $ 236,397 |
Accounting Standards Updates Ac
Accounting Standards Updates Accounting Standards Update (Narrative) (Details) - USD ($) $ in Thousands | Jan. 01, 2020 | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017 |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||||
Cumulative effect of accounting change | $ (29,252) | $ (14,672) | $ (2,285) | |||
Retained Earnings [Member] | ||||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||||
Cumulative effect of accounting change | $ (29,300) | $ (29,252) | $ (14,700) | $ (14,672) | $ (2,300) | $ (2,285) |