Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 
 
 
FORM 10-Q
 
(Mark One)
   
ý Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
  
For the quarterly period ended September 30, 2018March 31, 2019
or
   
o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
  For the transition period from__________ to __________
Commission file number: 001-32550  
 
 
WESTERN ALLIANCE BANCORPORATION
(Exact name of registrant as specified in its charter)
 
 
 
Delaware 88-0365922
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
 
One E. Washington Street Suite 1400, Phoenix, AZ 85004
(Address of principal executive offices) (Zip Code)
(602) 389-3500
(Registrant’s telephone number, including area code)
 
 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ý    No  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ý Accelerated filer ¨
       
Non-accelerated filer ¨ Smaller reporting company ¨
       
    Emerging growth company ¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨ 
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  ý
As of October 26, 2018,April 25, 2019, Western Alliance Bancorporation had 105,858,808104,473,076 shares of common stock outstanding.

INDEX
 
  Page
 
  
  
Item 1. 
 
 
 
 
 
 
Item 2.
Item 3.
Item 4.
   
 
   
Item 1.
Item 1A.
Item 2.
Item 5.
Item 6.
   
  



PART I
GLOSSARY OF ENTITIES AND TERMS

The acronyms and abbreviations identified below are used in various sections of this Form 10-Q, including "Management's Discussion and Analysis of Financial Condition and Results of Operations," in Item 2 and the Consolidated Financial Statements and the Notes to Unaudited Consolidated Financial Statements in Item I1 of this Form 10-Q.
ENTITIES / DIVISIONS:
ABAAlliance Bank of ArizonaHOA ServicesHomeowner Associations Services
BONBank of NevadaLVSPLas Vegas Sunset Properties
BridgeBridge BankTPBTorrey Pines Bank
CompanyWestern Alliance Bancorporation and subsidiariesWA PWIWestern Alliance Public Welfare Investments, LLC
CSICS Insurance CompanyWAB or BankWestern Alliance Bank
FIBFirst Independent BankWABTWestern Alliance Business Trust
HFFHotel Franchise FinanceWAL or ParentWestern Alliance Bancorporation
TERMS:
AFSAvailable-for-SaleGNMAHFIGovernment National Mortgage AssociationHeld for Investment
ALCOAsset and Liability Management CommitteeGSEHTMGovernment-Sponsored EnterpriseHeld-to-Maturity
AOCIAccumulated Other Comprehensive IncomeHFIICSHeld for InvestmentInsured Cash Sweep Service
ASCAccounting Standards CodificationHTMIRCHeld-to-MaturityInternal Revenue Code
ASUAccounting Standards UpdateICSISDAInsured Cash Sweep Service
Basel CommitteeBasel Committee on Banking SupervisionIRCInternal Revenue CodeInternational Swaps and Derivatives Association
Basel IIIBanking Supervision's December 2010 final capital frameworkISDALIBORInternational Swaps and Derivatives AssociationLondon Interbank Offered Rate
BODBoard of DirectorsLIBORLIHTCLondon Interbank Offered RateLow-Income Housing Tax Credit
CCOChief Credit OfficerMBSMortgage-Backed Securities
CDARSCertificate Deposit Account Registry ServiceLIHTCNBLLow-Income Housing Tax CreditNational Business Lines
CDOCollateralized Debt ObligationMBSNOLMortgage-Backed SecuritiesNet Operating Loss
CEOChief Executive OfficerNBLNPVNational Business LinesNet Present Value
CFOChief Financial OfficerNOLNet Operating Loss
CRACommunity Reinvestment ActNPVNet Present Value
CRECommercial Real EstateOCCOffice of the Comptroller of the Currency
Dodd-Frank ActThe Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010OCIOther Comprehensive Income
EGRRCPACLOThe Economic Growth, Regulatory Relief, and Consumer Protection ActCollateralized Loan ObligationOREOOther Real Estate Owned
CRACommunity Reinvestment ActOTTIOther-than-Temporary Impairment
CRECommercial Real EstatePCIPurchased Credit Impaired
EPSEarnings per shareOTTIPPNROther-than-Temporary ImpairmentPre-Provision Net Revenue
EVEEconomic Value of EquityPCIROUPurchased Credit ImpairedRight of use
Exchange ActSecurities Exchange Act of 1934, as amendedSBASmall Business Administration
FASBFinancial Accounting Standards BoardSBICSmall Business Investment Company
FDICFederal Deposit Insurance CorporationSECSecurities and Exchange Commission
FHLBFederal Home Loan BankSERPSupplemental Executive Retirement Plan
FHLMCFRBFederal Home Loan Mortgage CorporationTCJATax Cuts and Jobs Act
FNMAFederal National Mortgage AssociationReserve BankTDRTroubled Debt Restructuring
FRBFVOFederal Reserve BankFair Value OptionTEBTax Equivalent Basis
FVOGAAPFair Value OptionU.S. Generally Accepted Accounting PrinciplesXBRLeXtensible Business Reporting Language
GAAPGSEU.S. Generally Accepted Accounting PrinciplesGovernment-Sponsored Enterprise  

Item 1.Financial Statements
WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (Unaudited)   (Unaudited)  
 (in thousands,
except shares and per share amounts)
 (in thousands,
except shares and per share amounts)
Assets:        
Cash and due from banks $148,545
 $181,191
 $160,329
 $180,053
Interest-bearing deposits in other financial institutions 482,019
 235,577
 335,282
 318,519
Federal funds sold 70,000
 
 290,000
 
Cash, cash equivalents, and restricted cash 700,564
 416,768
 785,611
 498,572
Money market investments 5
 
 
 7
Investment securities - AFS, at fair value; amortized cost of $3,211,440 at September 30, 2018 and $3,515,401 at December 31, 2017 3,107,076
 3,499,519
Investment securities - HTM, at amortized cost; fair value of $279,033 at September 30, 2018 and $256,314 at December 31, 2017 288,290
 255,050
Investment securities - AFS, at fair value; amortized cost of $3,265,546 at March 31, 2019 and $3,339,888 at December 31, 2018 3,244,247
 3,276,988
Investment securities - HTM, at amortized cost; fair value of $331,083 at March 31, 2019 and $298,648 at December 31, 2018 310,865
 302,905
Investment securities - equity 172,294
 
 118,005
 115,061
Investments in restricted stock, at cost 65,993
 65,785
 66,287
 66,132
Loans - HFI, net of deferred loan fees and costs 16,732,765
 15,093,935
Loans, net of deferred loan fees and costs 18,116,748
 17,710,629
Less: allowance for credit losses (150,011) (140,050) (154,987) (152,717)
Net loans held for investment 16,582,754
 14,953,885
 17,961,761
 17,557,912
Premises and equipment, net 119,211
 118,719
 119,827
 119,474
Operating lease right of use asset 72,841
 
Other assets acquired through foreclosure, net 20,028
 28,540
 17,707
 17,924
Bank owned life insurance 169,162
 167,764
 171,126
 170,145
Goodwill 289,895
 289,895
 289,895
 289,895
Other intangible assets, net 9,658
 10,853
 8,873
 9,260
Deferred tax assets, net 43,483
 5,780
 22,309
 31,990
Investments in LIHTC 295,116
 267,023
 331,972
 342,381
Other assets 312,618
 249,504
 271,520
 310,840
Total assets $22,176,147
 $20,329,085
 $23,792,846
 $23,109,486
Liabilities:        
Deposits:        
Non-interest-bearing demand $8,014,715
 $7,433,962
 $7,679,361
 $7,456,141
Interest-bearing 10,893,865
 9,538,570
 12,529,379
 11,721,306
Total deposits 18,908,580
 16,972,532
 20,208,740
 19,177,447
Customer repurchase agreements 20,969
 26,017
 15,141
 22,411
Other borrowings 
 390,000
 
 491,000
Qualifying debt 359,082
 376,905
 373,996
 360,458
Operating lease liability 77,750
 
Other liabilities 399,123
 333,933
 396,599
 444,436
Total liabilities 19,687,754
 18,099,387
 21,072,226
 20,495,752
Commitments and contingencies (Note 12) 
 
Commitments and contingencies (Note 13) 
 
Stockholders’ equity:        
Common stock - par value $0.0001; 200,000,000 authorized; 107,633,006 shares issued at September 30, 2018 and 107,057,520 at December 31, 2017 10
 10
Treasury stock, at cost (1,771,509 shares at September 30, 2018 and 1,570,155 shares at December 31, 2017) (52,035) (40,173)
Common stock - par value $0.0001; 200,000,000 authorized; 106,449,184 shares issued at March 31, 2019 and 106,741,870 at December 31, 2018 10
 10
Treasury stock, at cost (1,966,238 shares at March 31, 2019 and 1,793,231 shares at December 31, 2018) (60,983) (53,083)
Additional paid in capital 1,444,555
 1,424,540
 1,390,569
 1,417,724
Accumulated other comprehensive (loss) income (70,363) (3,145)
Accumulated other comprehensive (loss) (8,191) (33,622)
Retained earnings 1,166,226
 848,466
 1,399,215
 1,282,705
Total stockholders’ equity 2,488,393
 2,229,698
 2,720,620
 2,613,734
Total liabilities and stockholders’ equity $22,176,147
 $20,329,085
 $23,792,846
 $23,109,486
See accompanying Notes to Unaudited Consolidated Financial Statements.

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED INCOME STATEMENTS
 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
 (in thousands, except per share amounts) (in thousands, except per share amounts)
Interest income:            
Loans, including fees $234,709
 $191,096
 $662,703
 $547,306
 $258,818
 $205,959
Investment securities 26,100
 22,152
 77,847
 58,010
 28,178
 25,772
Dividends 1,831
 2,005
 5,506
 6,154
 1,633
 1,478
Other 2,576
 2,583
 5,459
 5,584
 2,539
 1,488
Total interest income 265,216
 217,836
 751,515
 617,054
 291,168
 234,697
Interest expense: 
 
     
 
Deposits 25,266
 11,449
 59,288
 29,506
 35,788
 14,173
Other borrowings 90
 84
 3,352
 333
 1,277
 1,326
Qualifying debt 5,794
 4,708
 16,458
 13,539
 6,105
 4,969
Other 28
 12
 51
 41
 662
 9
Total interest expense 31,178
 16,253
 79,149
 43,419
 43,832
 20,477
Net interest income 234,038
 201,583
 672,366
 573,635
 247,336
 214,220
Provision for credit losses 6,000
 5,000
 17,000
 12,250
 3,500
 6,000
Net interest income after provision for credit losses 228,038
 196,583
 655,366
 561,385
 243,836
 208,220
Non-interest income: 
 
     
 
Service charges and fees 5,267
 5,248
 16,684
 15,189
 5,412
 5,745
Income from equity investments 2,009
 1,460
Card income 2,138
 1,509
 6,143
 4,517
 1,841
 1,972
Income from equity investments 1,440
 967
 5,417
 2,977
Lending related income and gains (losses) on sale of loans, net 1,422
 97
 3,447
 746
Foreign currency income 1,092
 756
 3,475
 2,630
 1,095
 1,202
Income from bank owned life insurance 868
 975
 2,963
 2,896
 981
 928
(Loss) gain on sales of investment securities, net (7,232) 319
 (7,232) 907
Unrealized (losses) gains on assets measured at fair value, net (1,212) 
 (2,971) (1)
Lending related income and gains (losses) on sale of loans, net 251
 978
Unrealized gains (losses) on assets measured at fair value, net 2,834
 (1,074)
Other income 635
 585
 1,579
 1,795
 987
 432
Total non-interest income 4,418
 10,456
 29,505
 31,656
 15,410
 11,643
Non-interest expense: 
 
        
Salaries and employee benefits 64,762
 52,747
 188,680
 156,640
 68,556
 62,133
Occupancy 8,227
 6,864
Legal, professional, and directors' fees 7,907
 6,038
 21,856
 23,324
 7,532
 6,003
Occupancy 7,406
 7,507
 21,671
 21,328
Data processing 5,895
 4,524
 16,688
 14,163
 6,332
 5,207
Deposit costs 4,848
 2,904
 11,888
 6,778
 5,724
 2,926
Insurance 3,712
 3,538
 11,466
 10,355
 2,809
 3,869
Business development 1,381
 1,439
 4,523
 4,949
 2,085
 1,728
Card expense 1,282
 966
 3,305
 2,558
Loan and repossessed asset expenses 1,230
 1,263
 2,830
 3,639
 2,006
 583
Marketing 687
 776
 2,429
 2,628
 741
 596
Card expense 634
 942
Intangible amortization 398
 489
 1,195
 1,666
 387
 398
Net (gain) loss on sales / valuations of repossessed and other assets (67) 266
 (1,474) (46)
Net loss (gain) on sales / valuations of repossessed and other assets 97
 (1,228)
Other expense 14,400
 6,839
 29,481
 17,561
 7,784
 8,128
Total non-interest expense 113,841
 89,296
 314,538
 265,543
 112,914
 98,149
Income before provision for income taxes 118,615
 117,743
 370,333
 327,498
 146,332
 121,714
Income tax expense 7,492
 34,899
 53,631
 91,352
 25,536
 20,814
Net income $111,123
 $82,844
 $316,702
 $236,146
 $120,796
 $100,900
            
Earnings per share:            
Basic $1.06
 $0.79
 $3.03
 $2.27
 $1.16
 $0.97
Diluted 1.05
 0.79
 3.00
 2.25
 1.16
 0.96
Weighted average number of common shares outstanding:            
Basic 104,768
 104,221
 104,664
 104,124
 104,033
 104,530
Diluted 105,448
 104,942
 105,398
 104,941
 104,475
 105,324
See accompanying Notes to Unaudited Consolidated Financial Statements.

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
  Three Months Ended September 30, Nine Months Ended September 30,
  2018 2017 2018 2017
  (in thousands)
Net income $111,123
 $82,844
 $316,702
 $236,146
Other comprehensive (loss) income, net:        
Unrealized (loss) gain on AFS securities, net of tax effect of $7,337, $(689), $23,438, and $(9,894), respectively (22,462) 1,116
 (71,765) 15,947
Unrealized (loss) gain on SERP, net of tax effect of $4, $(71), $10, and $(93), respectively (12) 114
 (35) 150
Unrealized (loss) gain on junior subordinated debt, net of tax effect of $661, $(394), $(61), and $1,649, respectively (2,028) 641
 186
 (2,677)
Realized loss (gain) on sale of AFS securities included in income, net of tax effect of $(1,778), $122, $(1,778), and $346, respectively 5,454
 (197) 5,454
 (561)
Net other comprehensive (loss) income (19,048) 1,674
 (66,160) 12,859
Comprehensive income $92,075
 $84,518
 $250,542
 $249,005
  Three Months Ended March 31,
  2019 2018
  (in thousands)
Net income $120,796
 $100,900
Other comprehensive income (loss), net:    
Unrealized gain (loss) on AFS securities, net of tax effect of $(10,222) and $12,714, respectively 31,377
 (38,914)
Unrealized (loss) gain on SERP, net of tax effect of $6 and $2, respectively (18) (11)
Unrealized (loss) gain on junior subordinated debt, net of tax effect of $1,934 and $(478), respectively (5,928) 1,466
Net other comprehensive income (loss) 25,431
 (37,459)
Comprehensive income $146,227
 $63,441
See accompanying Notes to Unaudited Consolidated Financial Statements.

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
Common Stock Additional Paid in Capital Treasury Stock Accumulated Other Comprehensive (Loss) Income Retained Earnings Total Stockholders’ EquityCommon Stock Additional Paid in Capital Treasury Stock Accumulated Other Comprehensive (Loss) Income Retained Earnings Total Stockholders’ Equity
Shares Amount Shares Amount 
(in thousands)(in thousands)
Balance, December 31, 2016105,071
 $10
 $1,400,140
 $(26,362) $(4,695) $522,436
 $1,891,529
Balance, January 1, 2017 (1)105,071
 10
 1,400,140
 (26,362) (4,695) 522,974
 1,892,067
Balance, December 31, 2017105,487
 $10
 $1,424,540
 $(40,173) $(3,145) $848,466
 $2,229,698
Balance, January 1, 2018 (1)105,487
 10
 1,424,540
 (40,173) (4,203) 849,524
 2,229,698
Net income
 
 
 
 
 236,146
 236,146

 
 
 
 
 100,900
 100,900
Exercise of stock options36
 
 786
 
 
 
 786
9
 
 215
 
 
 
 215
Restricted stock, performance stock units, and other grants, net653
 
 17,909
 
 
 
 17,909
546
 
 6,705
 
 
 
 6,705
Restricted stock surrendered (2)(267) 
 
 (13,642) 
 
 (13,642)(181) 
 
 (6,296) 
 
 (6,296)
Other comprehensive income, net
 
 
 
 12,859
 
 12,859

 
 
 
 (37,459) 
 (37,459)
Balance, September 30, 2017105,493
 $10
 $1,418,835
 $(40,004) $8,164
 $759,120
 $2,146,125
Balance, March 31, 2018105,861
 $10
 $1,431,460
 $(46,469) $(41,662) $950,424
 $2,293,763
                          
Balance, December 31, 2017105,487
 $10
 $1,424,540
 $(40,173) $(3,145) $848,466
 $2,229,698
Balance, January 1, 2018 (3)105,487
 10
 1,424,540
 (40,173) (4,203) 849,524
 2,229,698
Balance, December 31, 2018104,949
 $10
 $1,417,724
 $(53,083) $(33,622) $1,282,705
 $2,613,734
Net income
 
 
 
 
 316,702
 316,702

 
 
 
 
 120,796
 120,796
Exercise of stock options21
 
 534
 
 
 
 534
1
 
 36
 
 
 
 36
Restricted stock, performance stock unit, and other grants, net554
 
 19,481
 
 
 
 19,481
647
 
 6,472
 
 
 
 6,472
Restricted stock surrendered (2)(201) 
 
 (11,862) 
 
 (11,862)(173) 
 
 (7,900) 
 
 (7,900)
Other comprehensive loss, net
 
 
 
 (66,160) 
 (66,160)
Balance, September 30, 2018105,861
 $10
 $1,444,555
 $(52,035) $(70,363) $1,166,226
 $2,488,393
Stock repurchase(941) 
 (33,663) 
 
 (4,286) (37,949)
Other comprehensive income, net
 
 
 
 25,431
 
 25,431
Balance, March 31, 2019104,483
 $10
 $1,390,569
 $(60,983) $(8,191) $1,399,215
 $2,720,620
(1)As adjusted for adoption of ASU 2017-12. The cumulative effect of adoption of this guidance at January 1, 2017 resulted in an increase to retained earnings of $0.5 million and a corresponding increase to loans for the fair market value adjustment on the swaps.
(2)Share amounts represent Treasury Shares, see "Note 1. Summary of Significant Accounting Policies" for further discussion.
(3)As adjusted for adoption of ASU 2016-01 and ASU 2018-02. The cumulative effect of adoption of this guidance at January 1, 2018 resulted in an increase to retained earnings of $1.1 million and a corresponding decrease to accumulated other comprehensive income. See
(2)Share amounts represent Treasury Shares, see "Note 1. Summary of Significant Accounting Policies" for further discussion.
See accompanying Notes to Unaudited Consolidated Financial Statements.

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
 Nine Months Ended September 30, Three Months Ended March 31,
 2018 2017 2019 2018
 (in thousands) (in thousands)
Cash flows from operating activities:        
Net income $316,702
 $236,146
 $120,796
 $100,900
Adjustments to reconcile net income to cash provided by operating activities:        
Provision for credit losses 17,000
 12,250
 3,500
 6,000
Depreciation and amortization 10,460
 9,956
 4,209
 3,407
Stock-based compensation 19,481
 17,909
 6,472
 6,705
Deferred income taxes (16,107) 3,371
 1,398
 (9,372)
Amortization of net premiums for investment securities 10,795
 14,926
 3,004
 3,920
Amortization of tax credit investments 26,546
 19,524
 10,145
 8,128
Amortization of operating lease right of use asset 2,601
 
Accretion of fair market value adjustments on loans acquired from business combinations (14,099) (20,994) (2,817) (5,738)
Accretion and amortization of fair market value adjustments on other assets and liabilities acquired from business combinations 1,427
 1,898
 463
 475
Income from bank owned life insurance (2,963) (2,896) (981) (928)
(Gains) / Losses on:    
Sales of investment securities 7,232
 (907)
Losses / (Gains) on:    
Assets measured at fair value, net 2,971
 1
 (2,834) 1,074
Sale of loans (2,434) 117
 408
 (678)
Other assets acquired through foreclosure, net (1,464) (233) 
 (1,242)
Valuation adjustments of other repossessed assets, net 32
 120
 99
 47
Sale of premises, equipment, and other assets, net (42) 67
 (2) (33)
Changes in:        
Other assets 17,419
 (12,958) (33,071) 5,773
Other liabilities 3,324
 (7,214) 37,924
 (30,122)
Net cash provided by operating activities $396,280
 $271,083
 $151,314
 $88,316
Cash flows from investing activities:        
Investment securities - trading    
Proceeds from sales $
 $994
Investment securities - AFS        
Purchases (251,413) (1,361,908) (26,342) (67,949)
Principal pay downs and maturities 329,958
 370,231
 97,732
 105,242
Proceeds from sales 44,308
 87,853
Investment securities - HTM        
Purchases (34,275) (62,489) (10,825) (7,800)
Principal pay downs and maturities 754
 
 2,868
 243
Equity securities    
Purchases (71,727) 
Equity securities carried at fair value    
Reinvestment of dividends (426) 
 (151) 
Purchase of investment tax credits (66,456) (19,916) (24,400) (13,376)
Purchase of SBIC investments (3,063) 
 (1,570) (263)
(Purchase) sale of money market investments, net (5) (175)
Sale (purchase) of money market investments, net 7
 (5)
Proceeds from bank owned life insurance 1,655
 607
 
 72
(Purchase) liquidation of restricted stock, net (208) (430) (155) (734)
Loan fundings and principal collections, net (1,591,733) (1,179,494) (385,497) (367,437)
Purchase of premises, equipment, and other assets, net (8,319) (7,644) (3,152) (576)
Proceeds from sale of other real estate owned and repossessed assets, net 8,793
 20,748
 
 5,285
Net cash used in investing activities $(1,642,157) $(2,151,623) $(351,485) $(347,298)

 Nine Months Ended September 30, Three Months Ended March 31,
 2018 2017 2019 2018
 (in thousands) (in thousands)
Cash flows from financing activities:        
Net increase (decrease) in deposits $1,936,048
 $2,354,920
 $1,031,293
 $382,006
Net increase (decrease) in borrowings (395,047) (95,661) (498,270) (94,340)
Proceeds from exercise of common stock options 534
 786
 36
 215
Cash paid for tax withholding on vested restricted stock (11,862) (13,642) (7,900) (6,296)
Common stock repurchases (37,949) 
Net cash provided by financing activities $1,529,673
 $2,246,403
 $487,210
 $281,585
Net increase (decrease) in cash, cash equivalents, and restricted cash 283,796
 365,863
 287,039
 22,603
Cash, cash equivalents, and restricted cash at beginning of period 416,768
 284,491
 498,572
 416,768
Cash, cash equivalents, and restricted cash at end of period $700,564
 $650,354
 $785,611
 $439,371
Supplemental disclosure:        
Cash paid during the period for:    
Cash paid (received) during the period for:    
Interest $81,247
 $47,815
 $43,832
 $25,303
Income taxes 14,658
 79,522
Income taxes, net of refunds (34,619) 9,881
Non-cash operating, investing, and financing activity:        
Transfers to other assets acquired through foreclosure, net 5,744
 1,812
 
 5,744
Unfunded commitments originated 65,639
 103,012
 1,735
 30,000
Change in unrealized (loss) gain on AFS securities, net of tax (66,311) 15,386
Change in unrealized gain (loss) on junior subordinated debt, net of tax 186
 (2,677)
Change in unfunded obligations 82,270
 140,217
Non-cash charitable contribution 6,895
 
Change in unrealized gain (loss) on AFS securities, net of tax 31,377
 (38,914)
Change in unrealized (loss) gain on junior subordinated debt, net of tax (5,928) 1,466
Net increase (decrease) in unfunded obligations 12,787
 120,512
See accompanying Notes to Unaudited Consolidated Financial Statements.


WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Nature of operation
WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of deposit, lending, treasury management, international banking, and online banking products and services through its wholly-owned banking subsidiary, WAB.
WAB operates the following full-service banking divisions: ABA, BON, FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services. In addition, the Company has two non-bank subsidiaries, LVSP, which holds and manages certain OREO properties, and a captive insurance company formed and licensed under the laws of the State of Arizona, CSI. CSI was established as part of the Company's overall enterprise risk management strategy.
Basis of presentation
The accounting and reporting policies of the Company are in accordance with GAAP and conform to practices within the financial services industry. The accounts of the Company and its consolidated subsidiaries are included in the Consolidated Financial Statements.
Use of estimates
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management's estimates and judgments are ongoing and are based on experience, current and expected future conditions, third-party evaluations and various other assumptions that management believes are reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities, as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from those estimates and assumptions used in the Consolidated Financial Statements and related notes. Material estimates that are particularly susceptible to significant changes in the near term relate to the determination of the allowance for credit losses; estimated cash flows related to PCI loans; fair value determinations related to acquisitions and certain assets and liabilities carried at fair value; and accounting for income taxes.
Principles of consolidation
As of September 30, 2018,March 31, 2019, WAL has the following significant wholly-owned subsidiaries: WAB, LVSP, and eight unconsolidated subsidiaries used as business trusts in connection with the issuance of trust-preferred securities.
The Bank has the following significant wholly-owned subsidiaries: WABT, which holds certain investment securities, municipal and nonprofit loans, and leases; WA PWI, which holds certain limited partnerships invested primarily in low income housing tax credits and small business investment corporations; and BW Real Estate, Inc., which operates as a real estate investment trust and holds certain of WAB's real estate loans and related securities.
The Company does not have any other significant entities that should be considered for consolidation. All significant intercompany balances and transactions have been eliminated in consolidation.
Reclassifications
Certain amounts reported in prior periods may have been reclassified in the Consolidated Financial Statements to conform to the current presentation. The reclassifications have no effect on net income or stockholders’ equity as previously reported.

Interim financial information
The accompanying Unaudited Consolidated Financial Statements as of and for the three and nine months ended September 30,March 31, 2019 and 2018 and 2017 have been prepared in condensed format and, therefore, do not include all of the information and footnotes required by GAAP for complete financial statements. These statements have been prepared on a basis that is substantially consistent with the accounting principles applied to the Company's audited Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017.2018.


The information furnished in these interim statements reflects all adjustments which are, in the opinion of management, necessary for a fair statement of the results for each respective period presented. Such adjustments are of a normal, recurring nature. The results of operations in the interim statements are not necessarily indicative of the results that may be expected for any other quarter or for the full year. The interim financial information should be read in conjunction with the Company's audited Consolidated Financial Statements.
Investment securities
Investment securities include debt securities and equity securities. Debt securities may be classified as HTM, AFS, or measured at fair value. The appropriate classification is initially decided at the time of purchase. Securities classified as HTM are those debt securities that the Company has both the intent and ability to hold to maturity regardless of changes in market conditions, liquidity needs, or general economic conditions. These securities are carried at amortized cost. The sale of an HTM security within three months of its maturity date or after the majority of the principal outstanding has been collected is considered a maturity for purposes of classification and disclosure.
Securities classified as AFS or trading securities are reported as an asset in the Consolidated Balance Sheet at their estimated fair value. As the fair value of AFS debt securities changes, the changes are reported net of income tax as an element of OCI, except for other-than-temporarily-impaired securities. When AFS debt securities are sold, the unrealized gain or loss is reclassified from OCI to non-interest income. The changes in the fair values of trading securities are reported in non-interest income. Securities classified as AFS are securities that the Company intends to hold for an indefinite period of time, but not necessarily to maturity. Any decision to sell a security classified as AFS would be based on various factors, including significant movements in interest rates, changes in the maturity mix of the Company’s assets and liabilities, liquidity needs, decline in credit quality, and regulatory capital considerations.
For periods prior to January 1, 2018, equity securities were classified as AFS and reported at fair value with unrealized gains and losses included as a separate component of AOCI, net of tax. Upon adoption of ASU 2016-01, the fair value changes in equity securities are recognized as part of non-interest income, see "Recently adopted accounting guidance" below for further discussion.
Interest income is recognized based on the coupon rate and increased by accretion of discounts earned or decreased by the amortization of premiums paid over the contractual life of the security, adjusted for prepayment estimates, using the interest method.
In estimating whether there are any OTTI losses, management considers the 1) length of time and the extent to which the fair value has been less than amortized cost; 2) financial condition and near term prospects of the issuer; 3) impact of changes in market interest rates; and 4) intent and ability of the Company to retain its investment for a period of time sufficient to allow for any anticipated recovery in fair value and whether it is not more likely than not the Company would be required to sell the security.
Declines in the fair value of individual AFS securities that are deemed to be other-than-temporary are reflected in earnings when identified. The fair value of the debt security then becomes the new cost basis. For individual debt securities where the Company does not intend to sell the security and it is not more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis, the other-than-temporary decline in fair value of the debt security related to 1) credit loss is recognized in earnings; and 2) interest rate, market, or other factors is recognized in other comprehensive income or loss.
For individual debt securities where the Company either intends to sell the security or more likely than not will not recover all of its amortized cost, the OTTI is recognized in earnings equal to the entire difference between the security's cost basis and its fair value at the balance sheet date. For individual debt securities for which a credit loss has been recognized in earnings, interest accruals and amortization and accretion of premiums and discounts are suspended when the credit loss is recognized. Interest received after accruals have been suspended is recognized on a cash basis.

Restricted stock
WAB is a member of the Federal Reserve System and, as part of its membership, is required to maintain stock in the FRB in a specified ratio to its capital. In addition, WAB is a member of the FHLB system and, accordingly, maintains an investment in capital stock of the FHLB based on the borrowing capacity used. The Bank also maintains an investment in its primary correspondent bank. All of these investments are considered equity securities with no actively traded market. Therefore, the shares are considered restricted investment securities. These investments are carried at cost, which is equal to the value at which they may be redeemed. The dividend income received from the stock is reported in interest income. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. No impairment has been recorded to date.

Loans, held for investment
The Company generally holds loans for investment and has the intent and ability to hold loans until their maturity. Therefore, they are reported at book value. Net loans are stated at the amount of unpaid principal, adjusted for net deferred fees and costs, purchase accounting fair value adjustments, and an allowance for credit losses. In addition, the book values of loans subject to a fair value hedge are adjusted for changes in value attributable to the effective portion of the hedged benchmark interest rate risk.
The Company may also acquire loans through a business combination. These acquired loans are recorded at estimated fair value on the date of purchase, which is comprised of unpaid principal adjusted for estimated credit losses and interest rate fair value adjustments. Loans are evaluated individually at the acquisition date to determine if there has been credit deterioration since origination. Such loans may then be aggregated and accounted for as a pool of loans based on common characteristics. When the Company acquires such loans, the yield that may be accreted (accretable yield) is limited to the excess of the Company’s estimate of undiscounted cash flows expected to be collected over the Company’s initial investment in the loan. The excess of contractual cash flows over the cash flows expected to be collected may not be recognized as an adjustment to yield, loss, or a valuation allowance. Subsequent increases in cash flows expected to be collected generally are recognized prospectively through adjustment of the loan’s yield over the remaining life. Subsequent decreases to cash flows expected to be collected are recognized as impairment. The Company may not carry over or create a valuation allowance in the initial accounting for loans acquired under these circumstances. For purchased loans that are not deemed impaired at the acquisition date, fair value adjustments attributable to both credit and interest rates are accreted (or amortized) over the contractual life of the individual loan. For additional information, see "Note 3. Loans, Leases and Allowance for Credit Losses" of these Notes to Unaudited Consolidated Financial Statements.
Loan fees collected for the origination of loans less direct loan origination costs (net deferred loan fees) are amortized over the contractual life of the loan through interest income. If a loan has scheduled payments, the amortization of the net deferred loan fee is calculated using the interest method over the contractual life of the loan. If a loan does not have scheduled payments, such as a line of credit, the net deferred loan fee is recognized as interest income on a straight-line basis over the contractual life of the loan commitment. Commitment fees based on a percentage of a customer’s unused line of credit and fees related to standby letters of credit are recognized over the commitment period. When loans are repaid, any remaining unamortized balances of premiums, discounts, or net deferred fees are recognized as interest income.
Non-accrual loans: When a borrower discontinues making payments as contractually required by the note, the Company must determine whether it is appropriate to continue to accrue interest. The Company ceases accruing interest income when the loan has become delinquent by more than 90 days or when management determines that the full repayment of principal and collection of interest according to contractual terms is no longer likely. The Company may decide to continue to accrue interest on certain loans more than 90 days delinquent if the loans are well secured by collateral and in the process of collection.
For all loan types, when a loan is placed on non-accrual status, all interest accrued but uncollected is reversed against interest income in the period in which the status is changed, and the Company makes a loan-level decision to apply either the cash basis or cost recovery method. The Company recognizes income on a cash basis only for those non-accrual loans for which the collection of the remaining principal balance is not in doubt. Under the cost recovery method, subsequent payments received from the customer are applied to principal and generally no further interest income is recognized until the principal has been paid in full or until circumstances have changed such that payments are again consistently received as contractually required.
Impaired loans: A loan is identified as impaired when it is no longer probable that interest and principal will be collected according to the contractual terms of the original loan agreement. Generally, impaired loans are classified as non-accrual. However, in certain instances, impaired loans may continue on an accrual basis, if full repayment of all principal and interest is expected and the loan is both well secured and in the process of collection. Impaired loans are measured for reserve requirements in accordance with ASC 310, Receivables, based on the present value of expected future cash flows discounted at the loan's effective interest rate or, as a practical expedient, at the loan's observable market price or the fair value of the

collateral less applicable disposition costs if the loan is collateral dependent. The amount of an impairment reserve, if any, and any subsequent changes are recorded as a provision for credit losses. Losses are recorded as a charge-off when losses are confirmed. In addition to management's internal loan review process, regulators may from time to time direct the Company to modify loan grades, loan impairment calculations, or loan impairment methodology.
Troubled Debt Restructured Loans: A TDR loan is a loan on which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. The loan terms that have been modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. A TDR loan is also considered impaired. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the contractual restructured terms for a reasonable period of time (generally six months) and the ultimate collectability of the total contractual restructured principal and interest is no longer in doubt. However, such loans continue to be considered impaired. Consistent with regulatory guidance, a TDR loan that is subsequently modified in another restructuring agreement but has shown sustained performance and

classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.
Allowance for credit losses
Credit risk is inherent in the business of extending loans and leases to borrowers, for which the Company must maintain an adequate allowance for credit losses. The allowance for credit losses is established through a provision for credit losses recorded to expense. Loans are charged against the allowance for credit losses when management believes that the contractual principal or interest will not be collected. Subsequent recoveries, if any, are credited to the allowance. The allowance is an amount believed adequate to absorb estimated probable losses on existing loans that may become uncollectable, based on evaluation of the collectability of loans and prior credit loss experience, together with other factors. The Company formally re-evaluates and establishes the appropriate level of the allowance for credit losses on a quarterly basis.
The allowance consists of specific and general components. The specific allowance applies to impaired loans. For impaired collateral dependent loans, the reserve is calculated based on the collateral value, net of estimated disposition costs. Generally, the Company obtains independent collateral valuation analysis for each loan every twelve months. Loans not collateral dependent are evaluated based on the expected future cash flows discounted at the original contractual interest rate.
The general allowance covers all non-impaired loans and incorporates several quantitative and qualitative factors, which are used for all of the Company's portfolio segments. Quantitative factors include company-specific, ten-year historical net charge-offs stratified by loans with similar characteristics. Qualitative factors include: 1) levels of and trends in delinquencies and impaired loans; 2) levels of and trends in charge-offs and recoveries; 3) trends in volume and terms of loans; 4) changes in underwriting standards or lending policies; 5) experience, ability, depth of lending staff; 6) national and local economic trends and conditions; 7) changes in credit concentrations; 8) out-of-market exposures; 9) changes in quality of loan review system; and 10) changes in the value of underlying collateral.
Due to the credit concentration of the Company's loan portfolio in real estate secured loans, the value of collateral is heavily dependent on real estate values in Arizona, Nevada, and California. While management uses the best information available to make its evaluation, future adjustments to the allowance may be necessary if there are significant changes in economic or other conditions. In addition, regulators, as an integral part of their examination processes, periodically review the Bank's allowance for credit losses, and may require the Bank to make additions to the allowance based on their judgment about information available to them at the time of their examination. Management regularly reviews the assumptions and formulae used in determining the allowance and makes adjustments if required to reflect the current risk profile of the portfolio.
Leases
At inception, contracts are evaluated to determine whether the contract constitutes a lease agreement. For contracts that are determined to be an operating lease, a corresponding ROU asset and operating lease liability are recorded in separate line items on the consolidated balance sheets. A ROU asset represents the Company’s right to use an underlying asset during the lease term and a lease liability represents the Company’s commitment to make contractually obligated lease payments. Operating lease ROU assets and liabilities are recognized at the commencement date of the lease and are based on the present value of lease payments over the lease term. The measurement of the operating lease ROU asset includes any lease payments made and is reduced by lease incentives that are paid or are payable to the Company. Variable lease payments that depend on an index or rate such as the Consumer Price Index are included in lease payments based on the rate in effect at the commencement date of the lease. Lease payments are recognized on a straight-line basis as part of occupancy expense over the lease term.
As the rate implicit in the lease is not readily determinable, the incremental collateralized borrowing rate is used to determine the present value of lease payments. This rate gives consideration to the applicable FHLB collateralized borrowing rates and is based on the information available at the commencement date. The Company has elected to apply the short-term lease measurement and recognition exemption to leases with an initial term of 12 months or less; therefore, these leases are not recorded on the Company’s consolidated balance sheet, but rather, lease expense is recognized over the lease term on a straight-line basis. The Company’s lease agreements may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that the options will be exercised.
In addition to the package of practical expedients, the Company also elected the practical expedient that allows lessees to make an accounting policy election to not separate non-lease components from the associated lease component, and instead account for them all together as part of the applicable lease component. This practical expedient can be elected separately for each underlying class of asset. The majority of the Company’s non-lease components such as common area maintenance, parking, and taxes are variable, and are expensed as incurred. Variable payment amounts are determined in arrears by the landlord depending on actual costs incurred. See “Note 4. Leases” of these Notes to Unaudited Consolidated Financial Statements for further disclosures required under the new standard.

Other assets acquired through foreclosure
Other assets acquired through foreclosure consist primarily of properties acquired as a result of, or in-lieu-of, foreclosure. Properties or other assets (primarily repossessed assets formerly leased) are classified as OREO and other repossessed property and are initially reported at fair value of the asset less estimated selling costs. Subsequent adjustments are based on the lower of carrying value or fair value less estimated costs to sell the property. Costs related to the development or improvement of the assets are capitalized and costs related to holding the assets are charged to non-interest expense. Property is evaluated regularly to ensure the recorded amount is supported by its current fair value and valuation allowances.
Goodwill and other intangible assets
The Company records as goodwill the excess of the purchase price over the fair value of the identifiable net assets acquired in accordance with applicable guidance. The Company performs its annual goodwill and intangibles impairment tests as of October 1 each year, or more often if events or circumstances indicate that the carrying value may not be recoverable. The Company can first elect to assess, through qualitative factors, whether it is more likely than not that goodwill is impaired. If the qualitative assessment indicates potential impairment, a quantitative impairment test is necessary. If, based on the quantitative test, a reporting unit's carrying amount exceeds its fair value, a goodwill impairment charge for this difference is recorded to current period earnings as non-interest expense.
The Company’s intangible assets consist primarily of core deposit intangible assets that are amortized over periods ranging from 5 to 10 years. The Company considers the remaining useful lives of its core deposit intangible assets each reporting period, as required by ASC 350, Intangibles—Goodwill and Other, to determine whether events and circumstances warrant a

revision to the remaining period of amortization. If the estimate of an intangible asset’s remaining useful life has changed, the remaining carrying amount of the intangible asset is amortized prospectively over the revised remaining useful life. The Company has not revised its estimates of the useful lives of its core deposit intangibles during the three and nine months ended September 30, 2018 and 2017.
Other assets acquired through foreclosure
Other assets acquired through foreclosure consist primarily of properties acquired as a result of,March 31, 2019 or in-lieu-of, foreclosure. Properties or other assets (primarily repossessed assets formerly leased) are classified as OREO and other repossessed property and are initially reported at fair value of the asset less estimated selling costs. Subsequent adjustments are based on the lower of carrying value or fair value less estimated costs to sell the property. Costs related to the development or improvement of the assets are capitalized and costs related to holding the assets are charged to non-interest expense. Property is evaluated regularly to ensure the recorded amount is supported by its current fair value and valuation allowances.2018.
Treasury shares
The Company separately presents treasury shares, which represent shares surrendered to the Company equal in value to the statutory payroll tax withholding obligations arising from the vesting of employee restricted stock awards. Treasury shares are carried at cost.
Common Stock Repurchases
On December 11, 2018, the Company adopted its common stock repurchase program, pursuant to which the Company is authorized to repurchase up to $250 million of its shares of common stock. All shares repurchased under the plan are retired upon settlement. The Company has elected to allocate the excess of the repurchase price over the par value of its common stock between additional paid-in capital and retained earnings. The allocation of the excess repurchase price to additional paid-in capital is limited to the amount of additional paid-in capital that was recorded at the time that the shares were initially issued, which is calculated on a last-in, first-out basis. 
Derivative financial instruments
The Company uses interest-rate swaps to mitigate interest-rate risk associated with changes to the fair value of certain fixed-rate financial instruments (fair value hedges).
The Company recognizes derivatives as assets or liabilities in the Consolidated Balance Sheet at their fair value in accordance with ASC 815, Derivatives and Hedging. The accounting for changes in the fair value of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset or liability attributable to a particular risk, such as interest rate risk, are considered fair value hedges.
Changes in the fair value of a derivative that is designated and qualifies as a fair value hedge, along with changes in the fair value of the hedged asset or liability that are attributable to the hedged risk are recorded in current-period earnings. Changes in the fair value of derivatives not considered to be highly effective in hedging the change in fair value of the hedged item are recognized in earnings as non-interest income during the period of the change.
The Company documents its hedge relationships, including identification of the hedging instruments and the hedged items, as well as its risk management objectives and strategies for undertaking the hedge transaction after the derivative contract is executed. At inception, the Company performs a quantitative assessment to determine whether the derivatives used in hedging transactions are highly effective (as defined in the guidance) in offsetting changes in the fair value of the hedged item. Retroactive effectiveness is assessed, as well as the continued expectation that the hedge will remain effective prospectively. After the initial quantitative

assessment is performed, on a quarterly basis, the Company performs a qualitative hedge effectiveness assessment. This assessment takes into consideration any adverse developments related to the counterparty's risk of default and any negative events or circumstances that affect the factors that originally enabled the Company to assess that it could reasonably support, qualitatively, an expectation that the hedging relationship was and will continue to be highly effective. The Company discontinues hedge accounting prospectively when it is determined that a hedge is no longer highly effective. When hedge accounting is discontinued on a fair value hedge that no longer qualifies as an effective hedge, the derivative continues to be reported at fair value in the Consolidated Balance Sheet, but the carrying amount of the hedged item is no longer adjusted for future changes in fair value. The adjustment to the carrying amount of the hedged item that existed at the date hedge accounting is discontinued is amortized over the remaining life of the hedged item into earnings.
Derivative instruments that are not designated as hedges, so called free-standing derivatives, are reported in the Consolidated Balance Sheet at fair value and the changes in fair value are recognized in earnings as non-interest income during the period of change.
The Company may in the normal course of business purchase a financial instrument or originate a loan that contains an embedded derivative instrument. Upon purchasing the instrument or originating the loan, the Company assesses whether the economic characteristics of the embedded derivative are clearly and closely related to the economic characteristics of the remaining component of the financial instrument (i.e., the host contract) and whether a separate instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When it is determined that the embedded derivative possesses economic characteristics that are not clearly and closely related to the economic characteristics of the host

contract and a separate instrument with the same terms would qualify as a derivative instrument, the embedded derivative is separated from the host contract and carried at fair value. However, in cases where the host contract is measured at fair value, with changes in fair value reported in current earnings, or the Company is unable to reliably identify and measure an embedded derivative for separation from its host contract, the entire contract is carried in the Consolidated Balance Sheet at fair value and is not designated as a hedging instrument.
Off-balance sheet instruments
In the ordinary course of business, the Company has entered into off-balance sheet financial instrument arrangements consisting of commitments to extend credit and standby letters of credit. Such financial instruments are recorded in the Consolidated Financial Statements when they are funded. They involve, to varying degrees, elements of credit risk in excess of amounts recognized in the Consolidated Balance Sheet. Losses would be experienced when the Company is contractually obligated to make a payment under these instruments and must seek repayment from the borrower, which may not be as financially sound in the current period as they were when the commitment was originally made. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company enters into credit arrangements that generally provide for the termination of advances in the event of a covenant violation or other event of default. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the party. The commitments are collateralized by the same types of assets used as loan collateral.
As with outstanding loans, the Company applies qualitative factors and utilization rates to its off-balance sheet obligations in determining an estimate of losses inherent in these contractual obligations. The estimate for credit losses on off-balance sheet instruments is included in other liabilities and the charge to income that establishes this liability is included in non-interest expense.
The Company also has off-balance sheet arrangements related to its derivative instruments. Derivative instruments are recognized in the Consolidated Financial Statements at fair value and their notional values are carried off-balance sheet. See "Note 9.10. Derivatives and Hedging Activities" of these Notes to Unaudited Consolidated Financial Statements for further discussion.
Business combinations
Business combinations are accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. Under the acquisition method, the acquiring entity in a business combination recognizes all of the acquired assets and assumed liabilities at their estimated fair values as of the date of acquisition. Any excess of the purchase price over the fair value of net assets and other identifiable intangible assets acquired is recorded as goodwill. To the extent the fair value of net assets acquired, including identified intangible assets, exceeds the purchase price, a bargain purchase gain is recognized. Changes to estimated fair values from a business combination are recognized as an adjustment to goodwill during the measurement period and are recognized in the proper reporting period in which the adjustment amounts are determined. Results of operations of an acquired business are included in the Consolidated Income Statement from the date of acquisition. Acquisition-related costs, including conversion and restructuring charges, are expensed as incurred.

Fair values of financial instruments
The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities. ASC 820, Fair Value Measurement, establishes a framework for measuring fair value and a three-level valuation hierarchy for disclosure of fair value measurement, as well as enhances disclosure requirements for fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The Company uses various valuation approaches, including market, income, and/or cost approaches. ASC 820 establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors market participants would consider in pricing the asset or liability developed based on the best information available in the circumstances. The hierarchy is broken down into three levels based on the reliability of inputs, as follows:
Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

Level 2 - 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 instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, prepayment speeds, volatilities, etc.) or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market.
Level 3 - Valuation is generated from model-based techniques where one or more significant inputs are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect the Company’s own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of matrix pricing, discounted cash flow models, and similar techniques.
The availability of observable inputs varies based on the nature of the specific financial instrument. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement in its entirety.
Fair value is a market-based measure considered from the perspective of a market participant who may purchase the asset or assume the liability rather than an entity-specific measure. When market assumptions are available, ASC 820 requires the Company to make assumptions regarding the assumptions that market participants would use to estimate the fair value of the financial instrument at the measurement date.
ASC 825, Financial Instruments, requires disclosure of fair value information about financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate that value.
Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent limitations in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates presented herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction at September 30, 2018March 31, 2019 and 2017.2018. The estimated fair value amounts for September 30,March 31, 2019 and 2018 and 2017 have been measured as of period-end, and have not been re-evaluated or updated for purposes of these Consolidated Financial Statements subsequent to those dates. As such, the estimated fair values of these financial instruments subsequent to the reporting date may be different than the amounts reported at period-end.
The information in "Note 13.14. Fair Value Accounting" in these Notes to Unaudited Consolidated Financial Statements should not be interpreted as an estimate of the fair value of the entire Company since a fair value calculation is only required for a limited portion of the Company’s assets and liabilities.
Due to the wide range of valuation techniques and the degree of subjectivity used in making the estimate, comparisons between the Company’s disclosures and those of other companies or banks may not be meaningful.

The following methods and assumptions were used by the Company in estimating the fair value of its financial instruments:
Cash, cash equivalents, and restricted cash
The carrying amounts reported in the Consolidated Balance Sheets for cash and due from banks approximate their fair value.
Money market investments
The carrying amounts reported in the Consolidated Balance Sheets for money market investments approximate their fair value.
Investment securities
The fair values of CRA investments, and exchange-listed preferred stock, and certain corporate debt securities are based on quoted market prices and are categorized as Level 1 in the fair value hierarchy.
The fair values of debt securities were determined based on matrix pricing. Matrix pricing is a mathematical technique that utilizes observable market inputs including, for example, yield curves, credit ratings, and prepayment speeds. Fair values determined using matrix pricing are generally categorized as Level 2 in the fair value hierarchy.

Restricted stock
WAB is a member of the Federal Reserve System and the FHLB and, accordingly, maintains investments in the capital stock of the FRB and the FHLB. WAB also maintains an investment in its primary correspondent bank. These investments are carried at cost since no ready market exists for them, and they have no quoted market value. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. The fair values of these investments have been categorized as Level 2 in the fair value hierarchy.
Loans
The fair value of loans is estimated based on discounted cash flows using interest rates currently being offered for loans with similar terms to borrowers with similar credit quality and adjustments that the Company believes a market participant would consider in determining fair value based on a third party independent valuation. As a result, the fair value for loans is categorized as Level 2 in the fair value hierarchy, excluding impaired loans which are categorized as Level 3.
Accrued interest receivable and payable
The carrying amounts reported in the Consolidated Balance Sheets for accrued interest receivable and payable approximate their fair value.
Derivative financial instruments
All derivatives are recognized in the Consolidated Balance Sheets at their fair value. The fair value for derivatives is determined based on market prices, broker-dealer quotations on similar products, or other related input parameters. As a result, the fair values have been categorized as Level 2 in the fair value hierarchy.
Deposits
The fair value disclosed for demand and savings deposits is by definition equal to the amount payable on demand at their reporting date (that is, their carrying amount), which the Company believes a market participant would consider in determining fair value. The carrying amount for variable-rate deposit accounts approximates their fair value. Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on these deposits. The fair value measurement of the deposit liabilities is categorized as Level 2 in the fair value hierarchy.
FHLB advances and customer repurchase agreements
The fair values of the Company’s borrowings are estimated using discounted cash flow analyses, based on the market rates for similar types of borrowing arrangements. The FHLB advances and customer repurchase agreements have been categorized as Level 2 in the fair value hierarchy due to their short durations.
Subordinated debt
The fair value of subordinated debt is based on the market rate for the respective subordinated debt security. Subordinated debt has been categorized as Level 3 in the fair value hierarchy.

Junior subordinated debt
Junior subordinated debt is valued based on a discounted cash flow model which uses as inputs Treasury Bond rates and the 'BB' rated financial index. Junior subordinated debt has been categorized as Level 3 in the fair value hierarchy.
Off-balance sheet instruments
The fair value of the Company’s off-balance sheet instruments (lending commitments and standby letters of credit) is based on quoted fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements, and the counterparties’ credit standing.

Income taxes
The Company is subject to income taxes in the United States and files a consolidated federal income tax return with all of its subsidiaries, with the exception of BW Real Estate, Inc. Deferred income taxes are recorded to reflect the effects of temporary differences between the financial reporting carrying amounts of assets and liabilities and their income tax bases using enacted tax rates that are expected to be in effect when the taxes are actually paid or recovered. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.
Net deferred tax assets are recorded to the extent that these assets will more-likely-than-not be realized. In making these determinations, all available positive and negative evidence is considered, including scheduled reversals of deferred tax liabilities, tax planning strategies, projected future taxable income, and recent operating results. If it is determined that deferred income tax assets to be realized in the future are in excess of their net recorded amount, an adjustment to the valuation allowance will be recorded, which will reduce the Company's provision for income taxes.
A tax benefit from an unrecognized tax benefit may be recognized when it is more-likely-than-not that the position will be sustained upon examination, including related appeals or litigation, based on technical merits. Income tax benefits must meet a more-likely-than-not recognition threshold at the effective date to be recognized.
Interest and penalties related to unrecognized tax benefits are recognized as part of the provision for income taxes in the Consolidated Income Statement. Accrued interest and penalties are included in the related tax liability line with other liabilities in the Consolidated Balance Sheet. See "Note 11.12. Income Taxes" of these Notes to Unaudited Consolidated Financial Statements for further discussion on income taxes.
Non-interest income
Non-interest income includes service charges and fees, income from equity investments, card income, foreign currency income, income from bank owned life insurance, lending related income, net gain or loss on sales of investment securities, net unrealized gains or losses on assets measured at fair value, and other income. Service charges and fees consist of fees earned from performance of account analysis, general account services, and other deposit account services. These fees are recognized as the related services are provided in accordance with ASC 606, Revenue from Contracts with Customers. Income from equity investments includes gains on equity warrant assets, SBIC equity income, and success fees. Card income includes fees earned from customer use of debit and credit cards, interchange income from merchants, and international charges. Card income is generally within the scope of ASC 310, Receivables; however, certain processing transactions for merchants, such as interchange fees, are within the scope of ASC 606. Beginning on October 1, 2018, interchange fees are being recorded net of customer rewards earned, which is more in line with current industry practice. Foreign currency income represents fees earned on the differential between purchases and sales of foreign currency on behalf of the Company’s clients. Income from bank owned life insurance is accounted for in accordance with ASC 325, Investments - Other. Lending related income includes fees earned from gains or losses on the sale of loans, SBA income, and letter of credit fees. Gains and losses on the sale of loans and SBA income are recognized pursuant to ASC 860, Transfers and Servicing. Net unrealized gains or losses on assets measured at fair value represent fair value changes in equity securities and are accounted for in accordance with ASC 321, Investments - Equity Securities. Fees related to standby letters of credit are accounted for in accordance with ASC 440, Commitments. Other income includes operating lease income, which is recognized on a straight-line basis over the lease term in accordance with ASC 840, Leases. Net gain or loss on sales / valuations of repossessed and other assets is presented as a component of non-interest expense, but may also be presented as a component of non-interest income in the event that a net gain is recognized. Net gain or loss on sales of repossessed and other assets are accounted for in accordance with ASC 610, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets. See "Note 15.16. Revenue from Contracts with Customers" of these Notes to Unaudited Consolidated Financial Statements for further details related to the nature and timing of revenue recognition for non-interest income revenue streams within the scope of the new standard.

Recent accounting pronouncements
In February 2016, the FASB issued guidance within ASU 2016-02, Leases. The amendments in ASU 2016-02 to Topic 842, Leases, require lessees to recognize the lease assets and lease liabilities arising from operating leases in the statement of financial position, which will result in a gross up of assets and liabilities on the balance sheet. The accounting applied by a lessor is largely unchanged from that applied under previous GAAP. In July 2018, the FASB issued guidance within ASU 2018-10, Codification Improvements to Topic 842, Leases and ASU 2018-11, Leases (Topic 842) Targeted Improvements. The amendments within ASU 2018-10 clarify how to apply certain aspects of the new leases standard. The amendments address the rate implicit in the lease, impairment of the net investment in the lease, lessee reassessment of lease classification, lessor reassessment of lease term and purchase options, variable payments that depend on an index or rate and certain transition adjustments, among other things. The amendments within ASU 2018-11 give entities another option for transition and provide lessors with a practical expedient. The transition option allows entities to continue to apply the legacy guidance in ASC 840, Leases, to prior periods, including disclosure requirements. Accordingly, under this transition approach, the modified retrospective transition method still applies; however, a cumulative-effect adjustment to the opening balance sheet of retained earnings is recognized in the period of adoption, rather than the earliest period presented. The practical expedient provides lessors with an option to not separate non-lease components from the associated lease components when certain criteria are met and requires them to account for the combined components in accordance with the new revenue standard if the associated non-lease components are the predominant components. The amendments in these ASUs are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Management evaluated several lease software solutions and selected a software solution that it believes will be able to effectively facilitate the application of the new accounting requirements. The population of its leases that are within the scope of the new guidance has been finalized and largely relate to real estate leases. All key lease data has been gathered and input into the new application and management is in the process of validating this data.
In June 2016, the FASB issued guidance within ASU 2016-13, Measurement of Credit Losses on Financial Instruments.Instruments. The new standard significantly changes the impairment model for most financial assets that are measured at amortized cost, including off-balance sheet credit exposures, from an incurred loss model to an expected loss model. The amendments in ASU 2016-13 to Topic 326, Financial Instruments - Credit Losses, require that an organization measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The ASU also requires enhanced disclosures, including qualitative and quantitative disclosures that provide additional information about the amounts recorded in the financial statements. Additionally, the ASU amends the accounting for credit losses on AFS debt securities and purchased financial assets with credit deterioration. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Management has formed a Steering Committee and established an implementation team made up of subject matter experts across different functions within the Company, including Finance, Risk, Credit, and IT, that will coordinate and facilitate all phases of planning and implementation of the new guidance. UnderThe Company has completed its loan portfolio stratification, with methodologies for measuring expected credit losses that include a combination of third-party vended models, internally-developed models, and simplified approaches. In addition, the directionCompany has completed substantive pre-production runs and model validation activities, which encompass a majority of the Company's CECL Steering Committee and in partnership with its Enterprise Project Management Office, theCompany’s loan portfolio. The implementation team is fully engaged with the implementation of its plan. The Company has identified its portfolio segments and made modeling choices that include both internally-developed models as well as vended solutions, with parallel testing of certain models expected to begin in early 2019. The team is also focused on updating its accounting policies and assessing its control framework to identify risks resulting from new processes, judgments and data.
In March 2017, the FASB issued guidance within ASU 2017-08, Premium Amortization on Purchased Callable Debt Securities. The amendments in ASU 2017-08 to Subtopic 310-20, Receivables-Nonrefundable Fees and Other Costs, shorten the amortization period for certain purchased callable debt securities held at a premium to the earliest call date, which more closely align the amortization period of premiums and discounts to expectations incorporated in market pricing on the underlying securities. Under current GAAP, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments in this ASU should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. The adoption of this guidance is not expected to have a significant impact on the Company's Consolidated Financial Statements.
In June 2018, the FASB issued guidance within ASU 2018-07, Improvements to Nonemployee Share-Based Payment Accounting. The amendments in ASU 2018-07 to Topic 718, Compensation-Stock Compensation, are intended to align the accounting for share-based payment awards issued to employees and nonemployees. Changes to the accounting for nonemployee awards include: 1) equity classified share-based payment awards issued to nonemployees will now be measured on the grant date, instead of the previous requirement to remeasure the awards through the performance completion date; 2) for

performance conditions, compensation cost associated with the award will be recognized when achievement of the performance condition is probable, rather than upon achievement of the performance condition; and 3) the current requirement to reassess the classification (equity or liability) for nonemployee awards upon vesting will be eliminated, except for awards in the form of convertible instruments. The new guidance also clarifies that any share-based payment awards issued to customers should be evaluated under ASC 606, Revenue from Contracts with Customers. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company's share-based payment awards to nonemployees consist only of grants made to the Company's BOD as compensation solely related to the individual's role as a Director. As such, in accordance with ASC 718, the Company accounts for these share-based payment awards to its Directors in the same manner as share-based payment awards for its employees. Accordingly, the amendments in this guidance will not have an effect on the accounting for the Company's share-based payment awards to its Directors.
In July 2018, the FASB issued guidance within ASU 2018-09, Codification Improvements. The amendments in ASU 2018-09 are intended to clarify or correct unintended guidance in the FASB Codification and affect a wide variety of Topics in the Codification. The topics that are applicable to the Company include: 1) debt modifications and extinguishments; 2) stock compensation; and 3) derivatives and hedging. For debt modifications and extinguishments, the amendment clarifies that, in an early extinguishment of debt for which the fair value option has been elected, the net carrying amount of the extinguished debt is equal to its fair value at the reacquisition date, and upon extinguishment, the cumulative amount of the gain or loss on the extinguished debt that resulted from changes in instrument-specific credit risk should be presented in net income. The Company has junior subordinated debt that is recorded at fair value at each reporting period due to election of the FVO. Accordingly, if in the future, the Company chooses to repay this debt prior to its contractual maturity, this amendment would be applicable. For stock compensation, the amendment clarifies that excess tax benefits or tax deficiencies should be recognized in the period in which the amount of the tax deduction is determined, which is typically when an award is exercised (in the case of share options) or vests (in the case of non-vested stock awards). The Company already records excess tax benefits or tax deficiencies in the periods in which the tax deduction is determined. Therefore, this amendment will not have an effect on the Company's accounting for excess tax benefits or tax deficiencies. For derivativespolicies, designing key controls, and hedging, previous guidance permits derivatives to be offset only when all four conditions (including the intent to set off) are met. This amendment clarifies that the intent to set off is not required to offset fair value amounts recognized for derivative instrumentsgovernance processes that are executed with the same counterparty under a master netting agreement. This amendment will not have an effect on the offsetting of the Company's derivative assets and liabilities.planned for implementation prior to adoption.
In August 2018, the FASB issued guidance within ASU 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. The amendments within ASU 2018-13 remove, modify, and supplement the disclosure requirements for fair value measurements. Disclosure requirements that were removed include: the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between levels, and the valuation processes for Level 3 fair value measurements. The amendments clarify that the measurement uncertainty disclosure is to communicate information about the uncertainty in measurement as of the reporting date. Additional disclosure requirements include: the changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period, and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. With the exception of the above additional disclosure requirements, which will be applied prospectively, all other amendments should be applied retrospectively to all periods presented upon their effective date. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on the Company's Consolidated Financial Statements.
In August 2018, the FASB issued guidance within ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40). The amendments in this ASU align 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). Accordingly, the amendments in this Update require an entity (customer) in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The amendments in this Update also require that the capitalized implementation costs of a hosting arrangement that is a service contract be expensed over the term of the hosting arrangement. Presentation requirements include: expense related to the capitalized implementation costs should be presented in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement, payments for capitalized implementation costs in the statement of cash flows should be classified in the same manner as payments made for fees associated with the hosting element, and capitalized implementation costs in the statement of financial position should be presented in the same line item that a prepayment for the fees of the associated hosting arrangement would be presented. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019.

Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on the Company's Consolidated Financial Statements.
Recently adopted accounting guidance
In May 2014, the FASB issued guidance within ASU 2014-09, Revenue from Contracts with Customers. The amendments in ASU 2014-09 to ASC 606, Revenue from Contracts with Customers, creates a common revenue standard and clarifies the principles for recognizing revenue that can be applied consistently across various transactions, industries, and capital markets. The amendments in the ASU clarify 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. As part of that principle, the entity should identify the contract(s) with the customer, identify the performance obligation(s) of the contract, determine the transaction price, allocate that transaction price to the performance obligation(s) of the contract, and then recognize revenue when or as the entity satisfies the performance obligation(s). The Company adopted ASU 2014-09 on January 1, 2018 using the modified retrospective method. Substantially all of the Company's revenue is generated from interest income related to loans and investment securities, which are not within the scope of this guidance. The contracts that are within the scope of this guidance include service charges and fees on deposit accounts, certain types of card income, and success fees earned from equity investments. The Company completed its review of contracts and other agreements that are within the scope of this guidance and did not identify any material changes to the timing or amount of revenue recognition. Accordingly, the Company did not recognize an adjustment to retained earnings upon adoption of this guidance. The Company’s accounting policies did not change materially since the principles of revenue recognition in the ASU are largely consistent with current practices applied by the Company. The Company has expanded its qualitative disclosures of performance obligations and disaggregation of significant categories of revenue. See "Note 15. Revenue from Contracts with Customers" for further discussion.
In JanuaryFebruary 2016, the FASB issued guidance within ASU 2016-01,2016-02, Recognition and Measurement of Financial Assets and Financial LiabilitiesLeases. The amendments in ASU 2016-012016-02 to Subtopic 825-10, Financial Instruments, containTopic 842, Leases, require lessees to recognize the following elements: 1) requires equity investments to be measured at fair value with changeslease assets and lease liabilities arising from operating leases in fair value recognized in net income; 2) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; 3) eliminates the requirement for public 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; 4) requires public business entities to use the exit price notion when measuring the fair valuestatement of financial instruments for disclosure purposes; 5) requires an entityposition. The accounting applied by a lessor is largely unchanged from that applied under previous GAAP. The Company adopted the amendments to present separately in OCI 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; 6) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or accompanying notes to the financial statements; 7) clarifies that the entity should evaluate the need for a valuation allowance on a deferred tax asset related to AFS securities in combination with the entity's other deferred tax assets. EffectiveTopic 842 on January 1, 2015,2019 using the modified retrospective approach. The Company elected the transition option issued under ASU 2018-11, Leases (Topic 842) Targeted Improvements, which allows entities to continue to apply the legacy guidance in ASC 840, Leases, to prior periods, including disclosure requirements. Accordingly, prior period financial results and disclosures have not been adjusted. The Company also elected to apply the package of practical expedients permitting entities to forgo reassessment of 1) expired or existing contracts that may contain leases; 2) lease classification of expired or existing

leases; and 3) initial direct costs for any existing leases. The Company established internal controls and implemented lease accounting software to facilitate the preparation of financial information and disclosures related to leases. The most significant impact of the new standard on the Company’s consolidated financial statements was the recognition of a ROU asset and lease liability for operating leases for which the Company adoptedis the amendment noted in item 5) above as discussed inlessee. The accounting for finance and operating leases for which the Company's Annual Report on Form 10-K forCompany is the year ended December 31, 2015. Effectivelessor remains substantially unchanged. Upon adoption of this guidance, on January 1, 2018, the Company adopted the other amendments in this guidance. The primary impact on the Company's Consolidated Financial Statements results from the amendments discussed in item 1) above as changes in the fair value of the Company's equity investments are now recognized in net income, rather than in AOCI. As of January 1, 2018,2019, the Company recorded a cumulative-effectROU asset and corresponding lease liability of $42.5 million and $46.1 million, respectively, on the consolidated balance sheet. No cumulative effect adjustment to retained earnings resulted from adoption of $0.4 million to decrease accumulated other comprehensive income withthis guidance. The new standard did not have a corresponding increase to opening retained earnings. Duringmaterial impact on the nine months ended September 30, 2018, the Company recognized a lossCompany’s results of $3.0 million related to fair value changes in equity securities, which was recorded in the Consolidated Income Statement.operations or cash flows.
In August 2016,March 2017, the FASB issued guidance within ASU 2016-15,2017-08, Classification of Certain Cash Receipts and Cash Payments. Premium Amortization on Purchased Callable Debt Securities. The amendments in ASU 2016-152017-08 to Topic 230, StatementSubtopic 310-20, Receivables-Nonrefundable Fees and Other Costs, shorten the amortization period for certain purchased callable debt securities held at a premium to the earliest call date, which more closely align the amortization period of Cash Flows, provide guidancepremiums and discounts to expectations incorporated in market pricing on eight specific cash flow classification issues: 1) debt prepayment or debt extinguishment costs; 2) settlementthe underlying securities. Under current GAAP, entities generally amortize the premium as an adjustment of zero-coupon debt instruments; 3) contingent consideration payments made after a business combination; 4) proceeds fromyield over the settlement of insurance claims; 5) proceeds from the settlement of corporate-ownedcontractual life insurance policies, including bank-owned life insurance policies; 6) distributions received from equity method investments; 7) beneficial interest in securitization transactions; and 8) separately identifiable cash flows and the application of the predominance principle.instrument. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments in this ASU should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. As of March 31, 2019, the Company does not hold these types of securities, therefore, adoption of this guidance did not have a significant impact on the Company's Consolidated Statement of Cash Flows.
In January 2017, the FASB issued guidance within ASU 2017-01, Clarifying the Definition of a Business. The amendments in ASU 2017-01 to Topic 805, Business Combinations, clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or

businesses. The adoption of this guidance did not have a significant impact on the Company's Consolidated Financial Statements.
In January 2017, the FASB issued guidance within ASU 2017-04, Simplifying the Test for Goodwill Impairment. The amendments in ASU 2017-04 to Topic 350, Intangibles - Goodwill and Other, modify the concept of impairment from the condition that exists when the carrying amount of goodwill exceeds its implied fair value to the condition that exists when the carrying amount of a reporting unit exceeds its fair value. Accordingly, the amendments eliminate Step 2 from the goodwill impairment test because goodwill impairment will no longer be determined by calculating the implied fair value of goodwill by assigning the fair value of a reporting unit to all of its assets and liabilities as if that reporting unit had been acquired in a business combination. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The adoption of this guidance did not have a significantan impact on the Company's Consolidated Financial Statements.
In February 2017,June 2018, the FASB issued guidance within ASU 2017-05,2018-07, Clarifying the Scope of Asset Derecognition Guidance andImprovements to Nonemployee Share-Based Payment Accounting for Partial Sales of Nonfinancial Assets. The amendments in ASU 2017-052018-07 to Subtopic 610-20, Other Income-GainsTopic 718, Compensation-Stock Compensation, are intended to align the accounting for share-based payment awards issued to employees and Losses fromnonemployees. Changes to the Derecognitionaccounting for nonemployee awards include: 1) equity classified share-based payment awards issued to nonemployees will now be measured on the grant date, instead of Nonfinancial Assets, clarify the scopeprevious requirement to remeasure the awards through the performance completion date; 2) for performance conditions, compensation cost associated with the award will be recognized when achievement of Subtopic 610-20the performance condition is probable, rather than upon achievement of the performance condition; and add guidance3) the current requirement to reassess the classification (equity or liability) for partial salesnonemployee awards upon vesting will be eliminated, except for awards in the form of nonfinancial assets, including partial sales of real estate. Under current GAAP, there are several different accounting models to evaluate whether the transfer of certain assets qualify for sale treatment.convertible instruments. The new standard reducesguidance also clarifies that any share-based payment awards issued to customers should be evaluated under ASC 606, Revenue from Contracts with Customers. The Company's share-based payment awards to nonemployees consist only of grants made to the number of potential accounting models that might apply and clarifies which model does applyCompany's BOD as compensation solely related to the individual's role as a Director. As such, in various circumstances. Theaccordance with ASC 718, the Company accounts for these share-based payment awards to its Directors in the same manner as share-based payment awards for its employees. Accordingly, the adoption of this guidance did not have a significantan impact on the accounting for the Company's Consolidated Financial Statements.share-based payment awards to its Directors.
In May 2017, the FASB issued guidance within ASU 2017-09, Scope of Modification Accounting. The amendments in ASU 2017-09 to Topic 718, Compensation - Stock Compensation, provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. An entity should account for the effects of a modification unless all of the following conditions are met: the fair value of the modified award is the same as the fair value of the original award immediately before the original award is modified; the vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; and the classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The adoption of this guidance did not have a significant impact on the Company's Consolidated Financial Statements.
In FebruaryJuly 2018, the FASB issued guidance within ASU 2018-02,2018-09, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive IncomeCodification Improvements. Under current GAAP, the effect of a change in tax laws or rates on deferred tax liabilities and assets are included in income from continuing operations even in situations in which the related income tax effects of items in AOCI were originally recognized in comprehensive income. Accordingly, as the adjustment of deferred taxes due to the reduction of the historical corporate income tax rate to the newly enacted corporate income tax rate is required to be included in income from continuing operations, the tax effects of items within AOCI do not reflect the current tax rate. The amendments in ASU 2018-022018-09 are intended to Topic 220, Income Statement - Reporting Comprehensive Income, allowclarify or correct unintended guidance in the FASB Codification and affect a reclassificationwide variety of Topics in the Codification. The topics that are applicable to the Company include: 1) debt modifications and extinguishments; 2) stock compensation; and 3) derivatives and hedging. For debt modifications and extinguishments, the amendment clarifies that, in an early extinguishment of debt for which the fair value option has been elected, the net carrying amount of the extinguished debt is equal to its fair value at the reacquisition date, and upon extinguishment, the cumulative amount of the gain or loss on the extinguished debt that resulted from AOCI to retained earnings from tax effects resulting from the TCJA.changes in instrument-specific credit risk should be presented in net income. The Company electedhas junior subordinated debt that is recorded at fair value at each reporting period due to adoptelection of the FVO. Accordingly, if in the future, the Company chooses to repay this debt prior to its contractual maturity, this amendment would be applicable. For stock compensation, the amendment clarifies that excess tax benefits or tax deficiencies should be recognized in the period in which the amount of the tax deduction is determined, which is typically when an award is exercised (in the case of share options) or vests (in the case of non-vested stock awards). The Company already records excess tax benefits or tax deficiencies in the periods in which the tax deduction is determined. Therefore, adoption of this amendment did not have an effect on the Company's accounting for excess tax benefits or tax deficiencies. For derivatives and hedging, previous guidance effective January 1, 2018permits derivatives to be offset only when all four conditions (including the intent to set off) are met. This amendment clarifies that the intent to set off is not required to offset fair value amounts recognized for derivative instruments that are executed with the same counterparty under a master netting agreement. This amendment did not have an effect on the offsetting of the Company's derivative assets and recorded a cumulative-effect adjustment of $0.7 million to decrease accumulated other comprehensive income with a corresponding increase to opening retained earnings.liabilities.



2. INVESTMENT SECURITIES
The carrying amounts and fair values of investment securities at September 30, 2018March 31, 2019 and December 31, 20172018 are summarized as follows:
 September 30, 2018 March 31, 2019
 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value
 (in thousands) (in thousands)
Held-to-maturity debt securities                
Tax-exempt $288,290
 $773
 $(10,030) $279,033
 $310,865
 $20,218
 $
 $331,083
                
Available-for-sale debt securities                
CDO $50
 $19,098
 $
 $19,148
 $50
 $14,976
 $
 $15,026
Commercial MBS issued by GSEs 107,915
 42
 (7,014) 100,943
 104,227
 104
 (5,232) 99,099
Corporate debt securities 105,033
 119
 (5,768) 99,384
 105,026
 116
 (8,100) 97,042
Private label residential MBS 887,581
 42
 (31,681) 855,942
 946,757
 2,861
 (14,271) 935,347
Residential MBS issued by GSEs 1,515,408
 167
 (65,516) 1,450,059
 1,509,590
 2,408
 (19,762) 1,492,236
Tax-exempt 511,957
 4,015
 (11,065) 504,907
 526,899
 11,666
 (1,575) 536,990
Trust preferred securities 32,000
 
 (3,383) 28,617
 32,000
 
 (3,383) 28,617
U.S. government sponsored agency securities 49,000
 
 (3,399) 45,601
 40,000
 
 (1,099) 38,901
U.S. treasury securities 2,496
 
 (21) 2,475
 997
 
 (8) 989
Total AFS debt securities $3,211,440
 $23,483
 $(127,847) $3,107,076
 $3,265,546
 $32,131
 $(53,430) $3,244,247
                
Equity securities (1)
                
CRA investments $52,058
 $
 $(1,314) $50,744
 $52,361
 $
 $(747) $51,614
Preferred stock 122,699
 880
 (2,029) 121,550
 65,913
 954
 (476) 66,391
Total equity securities $174,757
 $880
 $(3,343) $172,294
 $118,274
 $954
 $(1,223) $118,005
 December 31, 2017 December 31, 2018
 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value
 (in thousands) (in thousands)
Held-to-maturity debt securities                
Tax-exempt $255,050
 $4,514
 $(3,250) $256,314
 $302,905
 $3,163
 $(7,420) $298,648
                
Available-for-sale debt securities                
CDO $50
 $21,807
 $
 $21,857
 $50
 $15,277
 $
 $15,327
Commercial MBS issued by GSEs 113,069
 46
 (4,038) 109,077
 106,385
 82
 (6,361) 100,106
Corporate debt securities 105,044
 261
 (1,822) 103,483
 105,029
 
 (5,649) 99,380
Private label residential MBS 874,261
 756
 (6,493) 868,524
 948,161
 945
 (24,512) 924,594
Residential MBS issued by GSEs 1,719,188
 810
 (30,703) 1,689,295
 1,564,181
 1,415
 (35,472) 1,530,124
Tax-exempt 501,988
 10,893
 (1,971) 510,910
 542,086
 4,335
 (7,753) 538,668
Trust preferred securities 32,000
 
 (3,383) 28,617
 32,000
 
 (3,383) 28,617
U.S. government sponsored agency securities 64,000
 
 (2,538) 61,462
 40,000
 
 (1,812) 38,188
U.S. treasury securities 2,496
 
 (14) 2,482
 1,996
 
 (12) 1,984
Total AFS debt securities $3,339,888
 $22,054
 $(84,954) $3,276,988
                
Available-for-sale equity securities (1)
        
Equity securities        
CRA investments 51,133
 
 (517) 50,616
 $52,210
 $
 $(1,068) $51,142
Preferred stock 52,172
 1,160
 (136) 53,196
 65,954
 148
 (2,183) 63,919
Total AFS securities $3,515,401
 $35,733
 $(51,615) $3,499,519
Total equity securities $118,164
 $148
 $(3,251) $115,061
(1)

The Company's equity securities consist of CRA investments and preferred stock. Effective January 1, 2018, the Company adopted the amendments within ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, which requires that fair value changes in equity securities be recognized as part of non-interest income. Prior to January 1, 2018, equity securities were classified as part of AFS securities. On a prospective basis, equity securities will be reported separately.

The Company conducts an OTTI analysis on a quarterly basis. The initial indication of OTTI for both debt and equity securities is a decline in the market value below the amount recorded for an investment, and taking into account the severity and duration of the decline. Another potential indication of OTTI is a downgrade below investment grade. In determining whether an impairment is OTTI, the Company considers the length of time and the extent to which the market value has been below cost, recent events specific to the issuer, including investment downgrades by rating agencies and economic conditions of its industry, and the Company’s ability and intent to hold the investment for a period of time sufficient to allow for any anticipated recovery. For marketable equity securities, the Company also considers the issuer’s financial condition, capital strength, and near-term prospects.
For debt securities, for the purpose of an OTTI analysis, the Company also considers the cause of the price decline (general level of interest rates, credit spreads, and industry and issuer-specific factors), whether downgrades by bond rating agencies have occurred, the issuer’s financial condition, near-term prospects, and current ability to make future payments in a timely manner, as well as the issuer’s ability to service debt, and any change in agencies’ ratings at the evaluation date from the acquisition date and any likely imminent action.
At September 30, 2018March 31, 2019 and December 31, 2017,2018, the Company’s unrealized losses relate primarily to market interest rate increases since the securities' original purchase date. The total number of AFS securities in an unrealized loss position at September 30, 2018March 31, 2019 is 409,230, compared to 302373 at December 31, 2017.2018. The Company has reviewed securities for which there is an unrealized loss in accordance with its accounting policy for OTTI described above and determined that there are no impairment charges for the three and nine months ended September 30, 2018March 31, 2019 and 2017.2018. The Company does not consider any securities to be other-than-temporarily impaired as of September 30, 2018March 31, 2019 and December 31, 2017.2018. No assurance can be made that OTTI will not occur in future periods.
Information pertaining to securities with gross unrealized losses at September 30, 2018March 31, 2019 and December 31, 2017,2018, aggregated by investment category and length of time that individual securities have been in a continuous loss position follows: 
September 30, 2018March 31, 2019
Less Than Twelve Months More Than Twelve Months TotalLess Than Twelve Months More Than Twelve Months Total
Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair ValueGross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value
(in thousands)
Held-to-maturity debt securities           
Tax-exempt$10,030
 $215,827
 $
 $
 $10,030
 $215,827
           (in thousands)
Available-for-sale debt securities                      
Commercial MBS issued by GSEs$
 $
 $7,014
 $99,134
 $7,014
 $99,134
$
 $
 $5,232
 $97,264
 $5,232
 $97,264
Corporate debt securities766
 19,234
 5,002
 74,998
 5,768
 94,232

 
 8,100
 91,900
 8,100
 91,900
Private label residential MBS13,004
 463,026
 18,677
 374,504
 31,681
 837,530

 
 14,271
 703,525
 14,271
 703,525
Residential MBS issued by GSEs16,624
 563,642
 48,892
 878,925
 65,516
 1,442,567
2
 265
 19,760
 1,184,558
 19,762
 1,184,823
Tax-exempt6,337
 227,531
 4,728
 66,047
 11,065
 293,578

 
 1,575
 80,676
 1,575
 80,676
Trust preferred securities
 
 3,383
 28,617
 3,383
 28,617

 
 3,383
 28,617
 3,383
 28,617
U.S. government sponsored agency securities151
 4,849
 3,248
 40,752
 3,399
 45,601

 
 1,099
 33,901
 1,099
 33,901
U.S. treasury securities16
 978
 5
 1,497
 21
 2,475

 
 8
 989
 8
 989
Total AFS securities$36,898
 $1,279,260
 $90,949
 $1,564,474
 $127,847
 $2,843,734
$2
 $265
 $53,428
 $2,221,430
 $53,430
 $2,221,695

 December 31, 2017
 Less Than Twelve Months More Than Twelve Months Total
 Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value
 (in thousands)
Held-to-maturity debt securities           
Tax-exempt$3,250
 $107,921
 $
 $
 $3,250
 $107,921
            
Available-for-sale debt securities           
Commercial MBS issued by GSEs$161
 $13,565
 $3,877
 $93,641
 $4,038
 $107,206
Corporate debt securities1,398
 78,602
 424
 19,576
 1,822
 98,178
Private label residential MBS3,115
 480,885
 3,378
 188,710
 6,493
 669,595
Residential MBS issued by GSEs13,875
 999,478
 16,828
 523,270
 30,703
 1,522,748
Tax-exempt17
 6,159
 1,954
 69,674
 1,971
 75,833
Trust preferred securities
 
 3,383
 28,617
 3,383
 28,617
U.S. government sponsored agency securities14
 4,986
 2,524
 56,476
 2,538
 61,462
U.S. treasury securities14
 2,482
 
 
 14
 2,482
            
Available-for-sale equity securities           
CRA investments
 
 517
 50,616
 517
 50,616
Preferred stock136
 7,357
 
 
 136
 7,357
Total AFS securities$18,730
 $1,593,514
 $32,885
 $1,030,580
 $51,615
 $2,624,094
The portion of unrealized gains and losses related to equity securities still held at the reporting date is calculated as follows:
  Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018
  (in thousands)
Net (losses) gains on equity securities $(1,212) $(2,971)
Less: Net gains (losses) recognized on equity securities sold 
 
Unrealized (losses) gains on equity securities still held at the reporting date $(1,212) $(2,971)
 December 31, 2018
 Less Than Twelve Months More Than Twelve Months Total
 Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value
 (in thousands)
Held-to-maturity debt securities           
Tax-exempt$3,868
 $91,095
 $3,552
 $69,991
 $7,420
 $161,086
            
Available-for-sale debt securities           
Commercial MBS issued by GSEs$
 $
 $6,361
 $98,275
 $6,361
 $98,275
Corporate debt securities16
 5,013
 5,633
 94,367
 5,649
 99,380
Private label residential MBS5,173
 217,982
 19,339
 537,316
 24,512
 755,298
Residential MBS issued by GSEs1,363
 141,493
 34,109
 1,215,490
 35,472
 1,356,983
Tax-exempt3,562
 209,767
 4,191
 72,382
 7,753
 282,149
Trust preferred securities
 
 3,383
 28,617
 3,383
 28,617
U.S. government sponsored agency securities
 
 1,812
 38,188
 1,812
 38,188
U.S. treasury securities
 
 12
 1,984
 12
 1,984
Total AFS securities$10,114
 $574,255
 $74,840
 $2,086,619
 $84,954
 $2,660,874
The amortized cost and fair value of securities as of September 30, 2018,March 31, 2019, by contractual maturities, are shown below. MBS are shown separately as individual MBS are comprised of pools of loans with varying maturities. Therefore, these securities are listed separately in the maturity summary. 
 September 30, 2018 March 31, 2019
 Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value
 (in thousands) (in thousands)
Held-to-maturity        
Due in one year or less $1,200
 $1,236
 $10,100
 $10,147
After one year through five years 10,100
 10,122
After five years through ten years 14,602
 14,351
 14,386
 14,984
After ten years 262,388
 253,324
 286,379
 305,952
Total HTM securities $288,290
 $279,033
 $310,865
 $331,083
        
Available-for-sale        
Due in one year or less $4,001
 $3,996
 $2,296
 $2,313
After one year through five years 17,355
 17,571
 12,036
 12,206
After five years through ten years 223,060
 215,580
 211,149
 203,258
After ten years 456,120
 462,985
 479,491
 499,788
Mortgage-backed securities 2,510,904
 2,406,944
 2,560,574
 2,526,682
Total AFS securities $3,211,440
 $3,107,076
 $3,265,546
 $3,244,247

The following tables summarize the carrying amount of the Company’s investment ratings position as of September 30, 2018March 31, 2019 and December 31, 2017:2018: 
 September 30, 2018 March 31, 2019
 AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals
 (in thousands) (in thousands)
Held-to-maturity debt securities                                
Tax-exempt $
 $
 $
 $
 $
 $
 $288,290
 $288,290
 $
 $
 $
 $
 $
 $
 $310,865
 $310,865
                                
Available-for-sale debt securities                                
CDO $
 $
 $
 $
 $
 $19,148
 $
 $19,148
 $
 $
 $
 $
 $
 $15,026
 $
 $15,026
Commercial MBS issued by GSEs 
 100,943
 
 
 
 
 
 100,943
 
 99,099
 
 
 
 
 
 99,099
Corporate debt securities 
 
 
 71,685
 27,699
 
 
 99,384
 
 
 
 64,300
 32,742
 
 
 97,042
Private label residential MBS 818,046
 
 34,957
 395
 1,019
 1,525
 
 855,942
 911,689
 
 21,079
 297
 898
 1,384
 
 935,347
Residential MBS issued by GSEs 
 1,450,059
 
 
 
 
 
 1,450,059
 
 1,492,236
 
 
 
 
 
 1,492,236
Tax-exempt 61,443
 20,636
 244,696
 170,409
 
 
 7,723
 504,907
 68,227
 8,875
 294,830
 163,391
 
 
 1,667
 536,990
Trust preferred securities 
 
 
 
 28,617
 
 
 28,617
 
 
 
 
 28,617
 
 
 28,617
U.S. government sponsored agency securities 
 45,601
 
 
 
 
 
 45,601
 
 38,901
 
 
 
 
 
 38,901
U.S. treasury securities 
 2,475
 
 
 
 
 
 2,475
 
 989
 
 
 
 
 
 989
Total AFS securities (1) $879,489
 $1,619,714
 $279,653
 $242,489
 $57,335
 $20,673
 $7,723
 $3,107,076
 $979,916
 $1,640,100
 $315,909
 $227,988
 $62,257
 $16,410
 $1,667
 $3,244,247
                                
Equity securities                                
CRA investments $
 $26,291
 $
 $
 $
 $
 $24,453
 $50,744
 $
 $25,375
 $
 $
 $
 $
 $26,239
 $51,614
Preferred stock 
 
 
 
 72,991
 39,032
 9,527
 121,550
 
 
 
 
 47,931
 3,925
 14,535
 66,391
Total equity securities (1) $
 $26,291
 $
 $
 $72,991
 $39,032
 $33,980
 $172,294
 $
 $25,375
 $
 $
 $47,931
 $3,925
 $40,774
 $118,005
(1)Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

  December 31, 2018
  AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals
  (in thousands)
Held-to-maturity debt securities                
Tax-exempt $
 $
 $
 $
 $
 $
 $302,905
 $302,905
                 
Available-for-sale debt securities                
CDO $
 $
 $
 $
 $
 $15,327
 $
 $15,327
Commercial MBS issued by GSEs 
 100,106
 
 
 
 
 
 100,106
Corporate debt securities 
 
 
 66,515
 32,865
 
 
 99,380
Private label residential MBS 887,520
 
 34,342
 343
 947
 1,442
 
 924,594
Residential MBS issued by GSEs 
 1,530,124
 
 
 
 
 
 1,530,124
Tax-exempt 66,160
 12,146
 306,409
 152,330
 
 
 1,623
 538,668
Trust preferred securities 
 
 
 
 28,617
 
 
 28,617
U.S. government sponsored agency securities 
 38,188
 
 
 
 
 
 38,188
U.S. treasury securities 
 1,984
 
 
 
 
 
 1,984
Total AFS securities $953,680
 $1,682,548
 $340,751
 $219,188
 $62,429
 $16,769
 $1,623
 $3,276,988
                 
Equity securities                
CRA investments $
 $25,375
 $
 $
 $
 $
 $25,767
 $51,142
Preferred stock 
 
 
 
 45,771
 3,693
 14,455
 63,919
Total equity securities $
 $25,375
 $
 $
 $45,771
 $3,693
 $40,222
 $115,061
(1)Where ratings differ, the Company uses an average of the available ratings by major credit agencies.
  December 31, 2017
  AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals
  (in thousands)
Held-to-maturity debt securities                
Tax-exempt $
 $
 $
 $
 $
 $
 $255,050
 $255,050
                 
Available-for-sale debt securities                
CDO $
 $
 $
 $
 $
 $21,857
 $
 $21,857
Commercial MBS issued by GSEs 
 109,077
 
 
 
 
 
 109,077
Corporate debt securities 
 
 
 74,293
 29,190
 
 
 103,483
Private label residential MBS 809,242
 
 55,161
 1,350
 931
 1,840
 
 868,524
Residential MBS issued by GSEs 
 1,689,295
 
 
 
 
 
 1,689,295
Tax-exempt 64,893
 25,280
 249,200
 167,994
 
 
 3,543
 510,910
Trust preferred securities 
 
 
 
 28,617
 
 
 28,617
U.S. government sponsored agency securities 
 61,462
 
 
 
 
 
 61,462
U.S. treasury securities 
 2,482
 
 
 
 
 
 2,482
                 
Available-for-sale equity securities                
CRA investments 
 25,349
 
 
 
 
 25,267
 50,616
Preferred stock 
 
 
 10,388
 23,822
 4,104
 14,882
 53,196
Total AFS securities (1) $874,135
 $1,912,945
 $304,361
 $254,025
 $82,560
 $27,801
 $43,692
 $3,499,519
(1)Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

Securities with carrying amounts of approximately $814.1$940.0 million and $913.7$788.4 million at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively, were pledged for various purposes as required or permitted by law.
The following table presents grossThere were no gains and losses on sales of investment securities: 
  Three Months Ended September 30, Nine Months Ended September 30,
  2018 2017 2018 2017
  (in thousands)
Gross gains $
 $468
 $
 $1,181
Gross losses (7,232) (149) (7,232) (274)
Net (losses) gains on sales of investment securities $(7,232) $319
 $(7,232) $907
Duringsecurities during the three months ended September 30, 2018, the Company sold certain available-for-sale securities with a carrying value of $111.9 millionMarch 31, 2019 and recognized a net loss on sale of these securities of $7.2 million. The sale resulted from management’s review of its investment portfolio, which led to its decision to sell lower yielding securities and reinvest in securities with higher yields and shorter durations. With the exception of these transactions, management does not intend to sell any of its debt securities in an unrealized loss position in the foreseeable future and it is more-likely-than-not that the Company will not be required to sell these securities prior to recovery.

March 31, 2018.

3. LOANS, LEASES AND ALLOWANCE FOR CREDIT LOSSES
The composition of the Company’s held for investment loan portfolio is as follows: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Commercial and industrial $7,487,725
 $6,841,381
 $7,723,695
 $7,762,642
Commercial real estate - non-owner occupied 3,952,966
 3,904,011
 4,304,261
 4,213,428
Commercial real estate - owner occupied 2,288,156
 2,241,613
 2,285,340
 2,325,380
Construction and land development 2,107,631
 1,632,204
 2,283,527
 2,134,753
Residential real estate 827,073
 425,940
 1,461,561
 1,204,355
Consumer 69,214
 48,786
 58,364
 70,071
Loans, net of deferred loan fees and costs 16,732,765
 15,093,935
 18,116,748
 17,710,629
Allowance for credit losses (150,011) (140,050) (154,987) (152,717)
Total loans HFI $16,582,754
 $14,953,885
 $17,961,761
 $17,557,912
Net deferred loan fees and costs as of September 30, 2018March 31, 2019 and December 31, 20172018 total $31.0$34.8 million and $25.3$36.3 million, respectively, which is a reduction in the carrying value of loans. Net unamortized purchase discounts on secondary market loan purchases total $3.3$8.2 million and $8.5$2.0 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. Total loans held for investment are also net of interest rate and credit marks on acquired loans, which are a net reduction in the carrying value of loans. Interest rate marks were $8.7$6.1 million and $14.1$7.1 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. Credit marks were $17.2$13.1 million and $27.0$14.6 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.
The following table presents the contractual aging of the recorded investment in past due loans held for investment by class of loans:
 September 30, 2018 March 31, 2019
 Current 30-59 Days
Past Due
 60-89 Days
Past Due
 Over 90 Days Past Due Total
Past Due
 Total Current 30-59 Days
Past Due
 60-89 Days
Past Due
 Over 90 Days Past Due Total
Past Due
 Total
 (in thousands) (in thousands)
Commercial and industrial $7,477,017
 $8,870
 $254
 $1,584
 $10,708
 $7,487,725
 $7,711,923
 $193
 $10,638
 $941
 $11,772
 $7,723,695
Commercial real estate                        
Owner occupied 2,287,826
 
 330
 
 330
 2,288,156
 2,281,389
 2,630
 1,321
 
 3,951
 2,285,340
Non-owner occupied 3,787,571
 
 531
 
 531
 3,788,102
 4,143,704
 984
 
 
 984
 4,144,688
Multi-family 164,864
 
 
 
 
 164,864
 159,573
 
 
 
 
 159,573
Construction and land development                        
Construction 1,412,161
 
 
 
 
 1,412,161
 1,497,960
 
 
 
 
 1,497,960
Land 695,470
 
 
 
 
 695,470
 784,146
 945
 
 476
 1,421
 785,567
Residential real estate 811,516
 5,865
 1,338
 8,354
 15,557
 827,073
 1,439,763
 13,660
 2,736
 5,402
 21,798
 1,461,561
Consumer 68,881
 
 
 333
 333
 69,214
 58,248
 
 
 116
 116
 58,364
Total loans $16,705,306
 $14,735
 $2,453
 $10,271
 $27,459
 $16,732,765
 $18,076,706
 $18,412
 $14,695
 $6,935
 $40,042
 $18,116,748
 

 December 31, 2017 December 31, 2018
 Current 30-59 Days
Past Due
 60-89 Days
Past Due
 Over 90 days
Past Due
 Total
Past Due
 Total Current 30-59 Days
Past Due
 60-89 Days
Past Due
 Over 90 days
Past Due
 Total
Past Due
 Total
 (in thousands) (in thousands)
Commercial and industrial $6,835,385
 $2,245
 $669
 $3,082
 $5,996
 $6,841,381
 $7,753,111
 $3,187
 $416
 $5,928
 $9,531
 $7,762,642
Commercial real estate                        
Owner occupied 2,240,457
 1,026
 
 130
 1,156
 2,241,613
 2,320,321
 4,441
 
 618
 5,059
 2,325,380
Non-owner occupied 3,696,729
 2,993
 
 2,847
 5,840
 3,702,569
 4,051,837
 
 
 
 
 4,051,837
Multi-family 201,442
 
 
 
 
 201,442
 161,591
 
 
 
 
 161,591
Construction and land development                        
Construction 1,090,176
 
 
 
 
 1,090,176
 1,382,664
 
 
 
 
 1,382,664
Land 536,917
 
 
 5,111
 5,111
 542,028
 751,613
 
 476
 
 476
 752,089
Residential real estate 411,857
 6,874
 1,487
 5,722
 14,083
 425,940
 1,182,933
 9,316
 4,010
 8,096
 21,422
 1,204,355
Consumer 48,408
 83
 213
 82
 378
 48,786
 69,830
 
 
 241
 241
 70,071
Total loans $15,061,371
 $13,221
 $2,369
 $16,974
 $32,564
 $15,093,935
 $17,673,900
 $16,944
 $4,902
 $14,883
 $36,729
 $17,710,629
The following table presents the recorded investment in non-accrual loans and loans past due ninety days or more and still accruing interest by class of loans: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 Non-accrual loans Loans past due 90 days or more and still accruing Non-accrual loans Loans past due 90 days or more and still accruing Non-accrual loans Loans past due 90 days or more and still accruing Non-accrual loans Loans past due 90 days or more and still accruing
 Current Past Due/
Delinquent
 Total
Non-accrual
 Current Past Due/
Delinquent
 Total
Non-accrual
  Current Past Due/
Delinquent
 Total
Non-accrual
 Current Past Due/
Delinquent
 Total
Non-accrual
 
 (in thousands) (in thousands)
Commercial and industrial $14,894
 $9,083
 $23,977
 $
 $17,913
 $4,113
 $22,026
 $43
 $19,438
 $11,636
 $31,074
 $
 $7,639
 $7,451
 $15,090
 $
Commercial real estate                                
Owner occupied 
 
 
 
 1,089
 792
 1,881
 
 420
 
 420
 
 
 
 
 594
Non-owner occupied 
 
 
 
 
 5,840
 5,840
 
 
 580
 580
 
 
 
 
 
Multi-family 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Construction and land developmentConstruction and land development              Construction and land development              
Construction 
 
 
 
 
 
 
 
 3,307
 
 3,307
 
 
 476
 476
 
Land 
 
 
 
 868
 5,111
 5,979
 
 
 476
 476
 
 
 
 
 
Residential real estate 4,204
 8,354
 12,558
 
 2,039
 6,078
 8,117
 
 1,168
 6,746
 7,914
 
 552
 11,387
 11,939
 
Consumer 
 333
 333
 
 
 82
 82
 
 
 116
 116
 
 
 241
 241
 
Total $19,098
 $17,770
 $36,868
 $
 $21,909
 $22,016
 $43,925
 $43
 $24,333
 $19,554
 $43,887
 $
 $8,191
 $19,555
 $27,746
 $594
The reduction in interest income associated with loans on non-accrual status was approximately $0.6$0.3 million and $0.7$0.6 million for the three months ended September 30,March 31, 2019 and 2018, and 2017, respectively. For each of the nine months ended September 30, 2018 and 2017, the reduction in interest income associated with loans on non-accrual status was approximately $1.8 million.
The Company utilizes an internal asset classification system as a means of reporting problem and potential problem loans. Under the Company’s risk rating system, the Company classifies problem and potential problem loans as Special Mention, Substandard, Doubtful, and Loss. Substandard loans include those characterized by well-defined weaknesses and carry the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Loans classified as Doubtful, or risk rated nine, have all the weaknesses inherent in those classified as Substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The final rating of Loss covers loans considered uncollectible and having such little recoverable value that it is not practical to defer writing off the asset. Loans that do not currently expose the Company to sufficient risk to warrant classification in one of the aforementioned categories, but possess weaknesses that warrant management’s close attention, are deemed to be Special Mention. Risk ratings are updated, at a minimum, quarterly.

The following tables present gross loans by risk rating: 
 September 30, 2018 March 31, 2019
 Pass Special Mention Substandard Doubtful Loss Total Pass Special Mention Substandard Doubtful Loss Total
 (in thousands) (in thousands)
Commercial and industrial $7,273,634
 $83,886
 $129,183
 $1,022
 $
 $7,487,725
 $7,548,610
 $70,708
 $103,828
 $549
 $
 $7,723,695
Commercial real estate                        
Owner occupied 2,214,765
 18,713
 54,678
 
 
 2,288,156
 2,206,311
 23,044
 55,985
 
 
 2,285,340
Non-owner occupied 3,765,340
 14,666
 8,096
 
 
 3,788,102
 4,095,492
 36,114
 13,082
 
 
 4,144,688
Multi-family 164,864
 
 
 
 
 164,864
 159,573
 
 
 
 
 159,573
Construction and land development                        
Construction 1,404,619
 1,233
 6,309
 
 
 1,412,161
 1,470,710
 4,088
 23,162
 
 
 1,497,960
Land 694,596
 266
 608
 
 
 695,470
 785,070
 
 497
 
 
 785,567
Residential real estate 808,065
 5,884
 13,124
 
 
 827,073
 1,452,919
 365
 8,277
 
 
 1,461,561
Consumer 68,599
 41
 574
 
 
 69,214
 58,208
 29
 127
 
 
 58,364
Total $16,394,482
 $124,689
 $212,572
 $1,022
 $
 $16,732,765
 $17,776,893
 $134,348
 $204,958
 $549
 $
 $18,116,748
 September 30, 2018 March 31, 2019
 Pass Special Mention Substandard Doubtful Loss Total Pass Special Mention Substandard Doubtful Loss Total
 (in thousands) (in thousands)
Current (up to 29 days past due) $16,386,286
 $124,056
 $194,118
 $846
 $
 $16,705,306
 $17,760,118
 $134,268
 $181,862
 $458
 $
 $18,076,706
Past due 30 - 59 days 5,991
 393
 8,351
 
 
 14,735
 14,947
 35
 3,339
 91
 
 18,412
Past due 60 - 89 days 1,870
 240
 343
 
 
 2,453
 1,494
 45
 13,156
 
 
 14,695
Past due 90 days or more 335
 
 9,760
 176
 
 10,271
 334
 
 6,601
 
 
 6,935
Total $16,394,482
 $124,689
 $212,572
 $1,022
 $
 $16,732,765
 $17,776,893
 $134,348
 $204,958
 $549
 $
 $18,116,748
 
 December 31, 2017 December 31, 2018
 Pass Special Mention Substandard Doubtful Loss Total Pass Special Mention Substandard Doubtful Loss Total
 (in thousands) (in thousands)
Commercial and industrial $6,675,574
 $85,781
 $76,328
 $3,698
 $
 $6,841,381
 $7,574,506
 $61,202
 $126,356
 $578
 $
 $7,762,642
Commercial real estate                        
Owner occupied 2,149,465
 43,122
 48,397
 629
 
 2,241,613
 2,255,513
 12,860
 57,007
 
 
 2,325,380
Non-owner occupied 3,676,711
 11,166
 14,692
 
 
 3,702,569
 4,030,350
 12,982
 8,505
 
 
 4,051,837
Multi-family 201,442
 
 
 
 
 201,442
 161,591
 
 
 
 
 161,591
Construction and land development                        
Construction 1,072,342
 4,477
 13,357
 
 
 1,090,176
 1,378,624
 1,210
 2,830
 
 
 1,382,664
Land 535,412
 637
 5,979
 
 
 542,028
 751,012
 
 1,077
 
 
 752,089
Residential real estate 408,527
 8,971
 8,442
 
 
 425,940
 1,191,571
 527
 12,257
 
 
 1,204,355
Consumer 47,824
 878
 84
 
 
 48,786
 69,755
 75
 241
 
 
 70,071
Total $14,767,297
 $155,032
 $167,279
 $4,327
 $
 $15,093,935
 $17,412,922
 $88,856
 $208,273
 $578
 $
 $17,710,629
 

 December 31, 2017 December 31, 2018
 Pass Special Mention Substandard Doubtful Loss Total Pass Special Mention Substandard Doubtful Loss Total
 (in thousands) (in thousands)
Current (up to 29 days past due) $14,758,149
 $154,295
 $145,934
 $2,993
 $
 $15,061,371
 $17,400,616
 $87,264
 $186,020
 $
 $
 $17,673,900
Past due 30 - 59 days 7,966
 518
 4,737
 
 
 13,221
 11,255
 1,580
 4,109
 
 
 16,944
Past due 60 - 89 days 1,182
 219
 968
 
 
 2,369
 719
 12
 3,767
 404
 
 4,902
Past due 90 days or more 
 
 15,640
 1,334
 
 16,974
 332
 
 14,377
 174
 
 14,883
Total $14,767,297
 $155,032
 $167,279
 $4,327
 $
 $15,093,935
 $17,412,922
 $88,856
 $208,273
 $578
 $
 $17,710,629
The table below reflects the recorded investment in loans classified as impaired: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Impaired loans with a specific valuation allowance under ASC 310 (1) $3,601
 $19,315
 $5,244
 $986
Impaired loans without a specific valuation allowance under ASC 310 (2) 121,968
 79,239
 138,154
 111,266
Total impaired loans $125,569
 $98,554
 $143,398
 $112,252
Valuation allowance related to impaired loans (3) $(1,171) $(5,606) $(1,357) $(681)
(1)Includes no TDR loans as of $2.6 million and $3.7 millioneach of the periods ended at September 30, 2018March 31, 2019 and December 31, 2017, respectively.2018.
(2)Includes TDR loans of $49.5$68.9 million and $48.8$44.5 million at September 30, 2018March 31, 2019 and December 31, 2017, respectively.
(3)Includes valuation allowance related to TDR loans of $0.7 million and $1.2 million at September 30, 2018, and December 31, 2017, respectively.
The following table presents impaired loans by class: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Commercial and industrial $76,185
 $34,156
 $78,768
 $63,896
Commercial real estate        
Owner occupied 6,660
 10,430
 8,185
 6,530
Non-owner occupied 12,544
 21,251
 12,268
 12,407
Multi-family 
 
 
 
Construction and land development        
Construction 
 
 20,329
 
Land 9,128
 15,426
 8,286
 9,403
Residential real estate 20,686
 17,170
 15,417
 19,744
Consumer 366
 121
 145
 272
Total $125,569
 $98,554
 $143,398
 $112,252
A valuation allowance is established for an impaired loan when the fair value of the loan is less than the recorded investment. In certain cases, portions of impaired loans are charged-off to realizable value instead of establishing a valuation allowance and are included, when applicable, in the table above as “Impaired loans without a specific valuation allowance under ASC 310.” However, before concluding that an impaired loan needs no associated valuation allowance, an assessment is made to consider all available and relevant information for the method used to evaluate impairment and the type of loan being assessed. The valuation allowance disclosed above is included in the allowance for credit losses reported in the Consolidated Balance Sheets as of September 30, 2018March 31, 2019 and December 31, 2017.

2018.
The following table presents the average investment in impaired loans and income recognized on impaired loans: 
 Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
 2018 2017 2018 20172019 2018
 (in thousands)(in thousands)
Average balance on impaired loans $104,652
 $108,033
 $100,712
 $106,456
$126,613
 $93,081
Interest income recognized on impaired loans 1,114
 1,040
 3,109
 3,075
1,493
 873
Interest recognized on non-accrual loans, cash basis 569
 694
 1,443
 1,372
309
 438

The following table presents the average investment in impaired loans by loan class: 
 Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
 2018 2017 2018 20172019 2018
 (in thousands)(in thousands)
Commercial and industrial $55,026
 $40,074
 $47,083
 $33,358
$67,144
 $36,849
Commercial real estate           
Owner occupied 6,698
 17,779
 8,053
 20,136
7,569
 9,043
Non-owner occupied 12,597
 20,789
 16,349
 22,446
12,311
 18,925
Multi-family 
 
 
 

 
Construction and land development           
Construction 
 
 
 
12,451
 
Land 9,218
 12,503
 9,701
 13,297
8,632
 10,281
Residential real estate 20,746
 16,692
 19,217
 17,011
18,278
 17,799
Consumer 367
 196
 309
 208
228
 184
Total $104,652
 $108,033
 $100,712
 $106,456
$126,613
 $93,081
The average investment in TDR loans was $52.2$51.6 million and $52.0$48.3 million for the three months ended September 30,March 31, 2019 and 2018, and 2017, respectively, and $51.9 million and $56.6 million for the nine months ended September 30, 2018 and 2017, respectively.
The following table presents interest income on impaired loans by class: 
 Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
 2018 2017 2018 20172019 2018
 (in thousands)(in thousands)
Commercial and industrial $537
 $307
 $1,276
 $788
$769
 $250
Commercial real estate           
Owner occupied 118
 166
 376
 530
123
 127
Non-owner occupied 218
 279
 744
 798
187
 262
Multi-family 
 
 
 

 
Construction and land development           
Construction 
 
 
 
180
 
Land 146
 163
 425
 551
129
 130
Residential real estate 95
 124
 287
 406
105
 104
Consumer 
 1
 1
 2

 
Total $1,114
 $1,040
 $3,109
 $3,075
$1,493
 $873
The Company is not committed to lend significant additional funds on these impaired loans.

The following table summarizes nonperforming assets: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Non-accrual loans (1) $36,868
 $43,925
 $43,887
 $27,746
Loans past due 90 days or more on accrual status (2) 
 43
 
 594
Accruing troubled debt restructured loans 42,567
 42,431
 52,488
 36,458
Total nonperforming loans 79,435
 86,399
 96,375
 64,798
Other assets acquired through foreclosure, net 20,028
 28,540
 17,707
 17,924
Total nonperforming assets $99,463
 $114,939
 $114,082
 $82,722
(1)Includes non-accrual TDR loans of $9.6$16.4 million and $10.1$8.0 million at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.
(2)Includes less than $0.1 million from loans acquired with deteriorated credit quality at December 31, 2017.

Loans Acquired with Deteriorated Credit Quality
Changes in the accretable yield for loans acquired with deteriorated credit quality are as follows:
 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
 (in thousands) (in thousands)
Balance, at beginning of period $4,828
 $14,247
 $9,324
 $15,177
 $3,768
 $9,324
Reclassifications from non-accretable to accretable yield (1) 
 
 683
 2,086
 
 683
Accretion to interest income (224) (690) (801) (2,374) (161) (313)
Reversal of fair value adjustments upon disposition of loans (563) (2,199) (5,165) (3,531) (470) (1,586)
Balance, at end of period $4,041
 $11,358
 $4,041
 $11,358
 $3,137
 $8,108
(1)The primary drivers of reclassification from non-accretable to accretable yield resulted from changes in estimated cash flows.
Allowance for Credit Losses
The following table summarizes the changes in the allowance for credit losses by portfolio type: 
  Three Months Ended September 30,
  Construction and Land Development Commercial Real Estate Residential Real Estate Commercial and Industrial Consumer Total
  (in thousands)
2018            
Beginning Balance $22,159
 $31,979
 $6,849
 $85,244
 $852
 $147,083
Charge-offs 
 
 46
 4,610
 109
 4,765
Recoveries (24) (856) (440) (362) (11) (1,693)
Provision 473
 (1,250) 832
 5,652
 293
 6,000
Ending balance $22,656
 $31,585
 $8,075
 $86,648
 $1,047
 $150,011
2017            
Beginning Balance $20,852
 $28,593
 $4,838
 $76,734
 $794
 $131,811
Charge-offs 
 175
 
 2,921
 61
 3,157
Recoveries (226) (1,781) (108) (619) (33) (2,767)
Provision (619) (1,474) (141) 7,192
 42
 5,000
Ending balance $20,459
 $28,725
 $4,805
 $81,624
 $808
 $136,421

 Nine Months Ended September 30, Three Months Ended March 31,
 Construction and Land Development Commercial Real Estate Residential Real Estate Commercial and Industrial Consumer Total Construction and Land Development Commercial Real Estate Residential Real Estate Commercial and Industrial Consumer Total
 (in thousands) (in thousands)
2019            
Beginning Balance $22,513
 $34,829
 $11,276
 $83,118
 $981
 $152,717
Charge-offs 
 
 188
 2,124
 1
 2,313
Recoveries (55) (453) (93) (477) (5) (1,083)
Provision 3,515
 2,585
 1,825
 (4,217) (208) 3,500
Ending balance $26,083
 $37,867
 $13,006
 $77,254
 $777
 $154,987
2018                        
Beginning Balance $19,511
 $31,495
 $5,478
 $82,793
 $773
 $140,050
 $19,511
 $31,495
 $5,478
 $82,793
 $773
 $140,050
Charge-offs 1
 233
 1,038
 10,904
 114
 12,290
 
 
 107
 3,517
 
 3,624
Recoveries (1,420) (1,228) (831) (1,737) (35) (5,251) (1,388) (126) (250) (459) (10) (2,233)
Provision 1,726
 (905) 2,804
 13,022
 353
 17,000
 1,695
 1,247
 (102) 3,143
 17
 6,000
Ending balance $22,656
 $31,585
 $8,075
 $86,648
 $1,047
 $150,011
 $22,594
 $32,868
 $5,519
 $82,878
 $800
 $144,659
2017            
Beginning Balance $21,175
 $25,673
 $3,851
 $73,333
 $672
 $124,704
Charge-offs 
 1,994
 447
 6,166
 103
 8,710
Recoveries (1,011) (2,719) (1,659) (2,705) (83) (8,177)
Provision (1,727) 2,327
 (258) 11,752
 156
 12,250
Ending balance $20,459
 $28,725
 $4,805
 $81,624
 $808
 $136,421


The following table presents impairment method information related to loans and allowance for credit losses by loan portfolio segment: 
 Commercial Real Estate-Owner Occupied Commercial Real Estate-Non-Owner Occupied Commercial and Industrial Residential Real Estate Construction and Land Development Consumer Total Loans Commercial Real Estate-Owner Occupied Commercial Real Estate-Non-Owner Occupied Commercial and Industrial Residential Real Estate Construction and Land Development Consumer Total Loans
 (in thousands) (in thousands)
Loans as of September 30, 2018;            
Loans as of March 31, 2019;Loans as of March 31, 2019;            
Recorded Investment                            
Impaired loans with an allowance recorded $
 $
 $3,238
 $363
 $
 $
 $3,601
 $
 $
 $590
 $1,347
 $3,307
 $
 $5,244
Impaired loans with no allowance recorded 6,660
 12,544
 72,947
 20,323
 9,128
 366
 121,968
 8,185
 12,268
 78,178
 14,070
 25,308
 145
 138,154
Total loans individually evaluated for impairment 6,660
 12,544
 76,185
 20,686
 9,128
 366
 125,569
 8,185
 12,268
 78,768
 15,417
 28,615
 145
 143,398
Loans collectively evaluated for impairment 2,276,847
 3,859,914
 7,411,540
 805,800
 2,098,503
 68,848
 16,521,452
 2,273,235
 4,232,710
 7,644,927
 1,446,125
 2,254,912
 58,219
 17,910,128
Loans acquired with deteriorated credit quality 4,649
 80,508
 
 587
 
 
 85,744
 3,920
 59,283
 
 19
 
 
 63,222
Total recorded investment $2,288,156
 $3,952,966
 $7,487,725
 $827,073
 $2,107,631
 $69,214
 $16,732,765
 $2,285,340
 $4,304,261
 $7,723,695
 $1,461,561
 $2,283,527
 $58,364
 $18,116,748
Unpaid Principal BalanceUnpaid Principal Balance            Unpaid Principal Balance            
Impaired loans with an allowance recorded $
 $
 $5,520
 $363
 $
 $
 $5,883
 $
 $
 $1,463
 $1,347
 $3,307
 $
 $6,117
Impaired loans with no allowance recorded 13,164
 18,292
 108,469
 29,312
 25,756
 10,726
 205,719
 13,479
 14,398
 117,839
 22,428
 41,528
 10,505
 220,177
Total loans individually evaluated for impairment 13,164
 18,292
 113,989
 29,675
 25,756
 10,726
 211,602
 13,479
 14,398
 119,302
 23,775
 44,835
 10,505
 226,294
Loans collectively evaluated for impairment 2,276,847
 3,859,914
 7,411,540
 805,800
 2,098,503
 68,848
 16,521,452
 2,273,235
 4,232,710
 7,644,927
 1,446,125
 2,254,912
 58,219
 17,910,128
Loans acquired with deteriorated credit quality 6,351
 96,840
 4,357
 706
 
 
 108,254
 5,257
 74,453
 4,347
 72
 
 
 84,129
Total unpaid principal balance $2,296,362
 $3,975,046
 $7,529,886
 $836,181
 $2,124,259
 $79,574
 $16,841,308
 $2,291,971
 $4,321,561
 $7,768,576
 $1,469,972
 $2,299,747
 $68,724
 $18,220,551
Related Allowance for Credit LossesRelated Allowance for Credit Losses            Related Allowance for Credit Losses            
Impaired loans with an allowance recorded $
 $
 $1,111
 $60
 $
 $
 $1,171
 $
 $
 $297
 $250
 $810
 $
 $1,357
Impaired loans with no allowance recorded 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total loans individually evaluated for impairment 
 
 1,111
 60
 
 
 1,171
 
 
 297
 250
 810
 
 1,357
Loans collectively evaluated for impairment 13,946
 17,497
 85,528
 8,015
 22,656
 1,047
 148,689
 14,746
 23,020
 76,949
 12,756
 25,273
 777
 153,521
Loans acquired with deteriorated credit quality 
 142
 9
 
 
 
 151
 
 101
 8
 
 
 
 109
Total allowance for credit losses $13,946
 $17,639
 $86,648
 $8,075
 $22,656
 $1,047
 $150,011
 $14,746
 $23,121
 $77,254
 $13,006
 $26,083
 $777
 $154,987

 Commercial Real Estate-Owner Occupied Commercial Real Estate-Non-Owner Occupied Commercial and Industrial Residential Real Estate Construction and Land Development Consumer Total Loans Commercial Real Estate-Owner Occupied Commercial Real Estate-Non-Owner Occupied Commercial and Industrial Residential Real Estate Construction and Land Development Consumer Total Loans
 (in thousands) (in thousands)
Loans as of December 31, 2017;            
Loans as of December 31, 2018;Loans as of December 31, 2018;            
Recorded Investment                            
Impaired loans with an allowance recorded $
 $
 $19,315
 $
 $
 $
 $19,315
 $
 $
 $623
 $363
 $
 $
 $986
Impaired loans with no allowance recorded 10,430
 21,250
 14,842
 17,170
 15,426
 121
 79,239
 6,530
 12,407
 63,273
 19,381
 9,403
 272
 111,266
Total loans individually evaluated for impairment 10,430
 21,250
 34,157
 17,170
 15,426
 121
 98,554
 6,530
 12,407
 63,896
 19,744
 9,403
 272
 112,252
Loans collectively evaluated for impairment 2,221,614
 3,777,219
 6,807,181
 408,169
 1,616,778
 48,665
 14,879,626
 2,314,871
 4,121,464
 7,698,746
 1,184,592
 2,125,350
 69,799
 17,514,822
Loans acquired with deteriorated credit quality 9,569
 105,542
 43
 601
 
 
 115,755
 3,979
 79,557
 
 19
 
 
 83,555
Total recorded investment $2,241,613
 $3,904,011
 $6,841,381
 $425,940
 $1,632,204
 $48,786
 $15,093,935
 $2,325,380
 $4,213,428
 $7,762,642
 $1,204,355
 $2,134,753
 $70,071
 $17,710,629
Unpaid Principal Balance                            
Impaired loans with an allowance recorded $
 $
 $20,795
 $
 $
 $
 $20,795
 $
 $
 $1,482
 $363
 $
 $
 $1,845
Impaired loans with no allowance recorded 17,459
 28,028
 42,261
 26,057
 32,289
 10,695
 156,789
 11,852
 18,155
 103,992
 27,979
 25,624
 10,632
 198,234
Total loans individually evaluated for impairment 17,459
 28,028
 63,056
 26,057
 32,289
 10,695
 177,584
 11,852
 18,155
 105,474
 28,342
 25,624
 10,632
 200,079
Loans collectively evaluated for impairment 2,221,614
 3,777,219
 6,807,181
 408,169
 1,616,778
 48,665
 14,879,626
 2,314,871
 4,121,464
 7,698,746
 1,184,592
 2,125,350
 69,799
 17,514,822
Loans acquired with deteriorated credit quality 12,619
 128,440
 3,146
 720
 
 
 144,925
 5,315
 95,680
 4,352
 72
 
 
 105,419
Total unpaid principal balance $2,251,692
 $3,933,687
 $6,873,383
 $434,946
 $1,649,067
 $59,360
 $15,202,135
 $2,332,038
 $4,235,299
 $7,808,572
 $1,213,006
 $2,150,974
 $80,431
 $17,820,320
Related Allowance for Credit LossesRelated Allowance for Credit Losses            Related Allowance for Credit Losses            
Impaired loans with an allowance recorded $
 $
 $5,606
 $
 $
 $
 $5,606
 $
 $
 $621
 $60
 $
 $
 $681
Impaired loans with no allowance recorded 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total loans individually evaluated for impairment 
 
 5,606
 
 
 
 5,606
 
 
 621
 60
 
 
 681
Loans collectively evaluated for impairment 13,884
 16,135
 76,919
 5,500
 19,599
 776
 132,813
 14,286
 20,456
 82,488
 11,216
 22,513
 981
 151,940
Loans acquired with deteriorated credit quality 
 1,629
 2
 
 
 
 1,631
 
 87
 9
 
 
 
 96
Total allowance for credit losses $13,884
 $17,764
 $82,527
 $5,500
 $19,599
 $776
 $140,050
 $14,286
 $20,543
 $83,118
 $11,276
 $22,513
 $981
 $152,717
Troubled Debt Restructurings
A TDR loan is a loan on which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. The loan terms that have been modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. The majority of the Company's modifications are extensions in terms or deferral of payments which result in no lost principal or interest followed by reductions in interest rates or accrued interest. A TDR loan is also considered impaired. Consistent with regulatory guidance, a TDR loan that is subsequently modified in another restructuring agreement but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.
During the three months ended September 30, 2018,March 31, 2019, the Company had fourtwo new TDR loans with a recorded investment of $2.8$27.1 million and twofive new TDR loans during the three months ended September 30, 2017March 31, 2018 with a recorded investment of $1.9$15.0 million. During the nine months ended September 30, 2018, the Company had eleven new TDR loans with a recorded investment of $34.4 million and three new TDR loans with a recorded investment of $6.8 million during the nine months ended September 30, 2017. No principal amounts were forgiven and there were no waived fees or other expenses resulting from these TDRs.
During the three and nine months ended September 30,March 31, 2019 and 2018, there were no TDR loans for which there was a payment default. During the three months ended September 30, 2017, there was one CRE, non-owner occupied TDR loan with a recorded investment of $0.1 million for which there was a payment default. During the nine months ended September 30, 2017, there were three TDR loans with a recorded investment of $0.5 million for which there was a payment default.

A TDR loan is deemed to have a payment default when it becomes past due 90 days, goes on non-accrual, or is restructured again. Payment defaults, along with other qualitative indicators, are considered by management in the determination of the allowance for credit losses.
At September 30,March 31, 2019 and December 31, 2018, commitments outstanding on TDR loans totaled $0.3 million. There were no loan commitments outstanding on TDR loans at December 31, 2017.$2.1 million and $1.5 million, respectively.
Loan Purchases and Sales
For the three months ended September 30,March 31, 2019 and 2018, and 2017, secondary market loan purchases totaled $482.8$530.5 million and $216.8$141.5 million, respectively. For the nine months ended September 30, 20182019, these purchased loans consisted of $312.5 million of residential real estate loans, $188.0 million of commercial and 2017, secondary market loan purchases totaled $1.01 billionindustrial loans, and $666.8$30.0 million respectively.of CRE, non-owner occupied loans. For 2018, these purchased loans consisted of $511.5 million of commercial and industrial loans, $471.7 million of residential real estate loans, and $27.1 million of construction loans. For 2017, these purchased loans consisted of $520.4$118.3 million of commercial and industrial loans and $146.4$23.2 million of residential real estate loans.
During the three months ended September 30,March 31, 2019, the Company sold commercial and industrial loans with carrying value of $15.5 million and recognized a net loss of $0.4 million. During the three months ended March 31, 2018, the Company sold loans which primarily consisted of commercial and industrial loans with a carrying value of $12.4$31.0 million and recognized a net gain of $1.0$0.7 million. During
4. LEASES
Adoption of ASU 2016-02, Leases
On January 1, 2019, the Company adopted the amendments to ASC 842, Leases, which requires lessees to recognize lease assets and liabilities arising from operating leases on the balance sheet. The Company adopted the new lease guidance using the modified retrospective approach and elected the transition option issued under ASU 2018-11, Leases (Topic 842) Targeted Improvements, allowing entities to continue to apply the legacy guidance in ASC 840, Leases, to prior periods, including disclosure requirements. Accordingly, prior period financial results and disclosures have not been adjusted.
The Company has operating leases under which it leases its branch offices, corporate headquarters, other offices, and data facility centers. Upon adoption of the new lease guidance, on January 1, 2019, the Company recorded a ROU asset and corresponding lease liability of $42.5 million and $46.1 million, respectively, on the consolidated balance sheet. As of March 31, 2019, the Company's operating lease ROU asset and operating lease liability totaled $72.8 million and $77.8 million, respectively. The increase in the operating lease ROU asset and the operating lease liability from the adoption date is due to execution of a major office lease extension subsequent to the adoption date. A weighted average discount rate of 3.06% was used in the measurement of the ROU asset and lease liability as of March 31, 2019.
The Company's leases have remaining lease terms between one to twelve years, with a weighted average lease term of 9.03 years at March 31, 2019. Some leases include multiple five-year renewal options. The Company’s decision to exercise these renewal options is based on an assessment of its current business needs and market factors at the time of the renewal. Currently, the Company has no leases for which the option to renew is reasonably certain and therefore, options to renew were not factored into the calculation of its ROU asset and lease liability as of March 31, 2019.
The following is a schedule of the Company's operating lease liabilities by contractual maturity as of March 31, 2019:
  (in thousands)
2019 $9,099
2020 11,200
2021 9,186
2022 7,992
2023 8,002
Thereafter 45,503
Total lease payments $90,982
Less: imputed interest 13,232
Total present value of lease liabilities $77,750
The Company also has additional operating leases, primarily related to its branch offices and corporate headquarters, that have not yet commenced as of March 31, 2019. The aggregate future commitment related to these additional leases totals $5.0 million. These operating leases will commence in fiscal year 2019 and have lease terms between six to twelve years.

Total operating lease costs of $3.3 million and other lease costs of $1.1 million, which include common area maintenance, parking, and taxes during the three months ended September 30, 2017,March 31, 2019 were included as part of occupancy expense. Short-term lease costs were not material during the Company sold commercial and industrial loans with a carrying value of $41.3 million and did not recognize a significant net gain or loss on the sales. During the ninethree months ended September 30,March 31, 2019. For the three months ended March 31, 2018, rent expense associated with the Company's operating leases totaled $2.5 million.
The below table shows the supplemental cash flow information related to the Company's operating leases for the three months ended March 31, 2019:
  (in thousands)
Cash paid for amounts included in the measurement of operating lease liabilities $3,039
Right-of-use assets obtained in exchange for new operating lease liabilities 32,905
Lease Obligations as of December 31, 2018
As previously disclosed in the Company's Annual Report on Form 10-K as of and for the year ended December 31, 2018, the Company sold loans which primarily consistedfollowing is a schedule of commercial and industrial loans with a carrying value of $46.5 million and recognized a gain of $2.4 million on the sales. During the nine months ended September 30, 2017, the Company sold loans, which consisted primarily of commercial and industrial loans with a carrying value of $50.5 million and recognized a loss of $0.1 million on the sales.future minimum rental payments under its non-cancelable operating leases, expiring through 2030:


  (in thousands)
2019 $11,370
2020 10,322
2021 7,418
2022 6,294
2023 6,070
Thereafter 15,417
Total future minimum rental payments $56,891
4.5. OTHER ASSETS ACQUIRED THROUGH FORECLOSURE
The following table represents the changes in other assets acquired through foreclosure: 
 Three Months Ended September 30, Three Months Ended March 31,
 2018 2019
 Gross Balance Valuation Allowance Net Balance Gross Balance Valuation Allowance Net Balance
 (in thousands) (in thousands)
Balance, beginning of period $31,145
 $(3,604) $27,541
 $19,979
 $(2,055) $17,924
Proceeds from sale of other real estate owned and repossessed assets, net (1,093) 401
 (692)
Charitable contribution (1) (6,895) 
 (6,895)
Charitable contribution (232) 114
 (118)
Valuation adjustments, net 
 
 
 
 (99) (99)
Gains (losses), net (2) 74
 
 74
Balance, end of period $23,231
 $(3,203) $20,028
 $19,747
 $(2,040) $17,707
            
 2017 2018
Balance, beginning of period $35,037
 $(4,049) $30,988
 $32,552
 $(4,012) $28,540
Transfers to other assets acquired through foreclosure, net 430
 
 430
 5,744
 
 5,744
Proceeds from sale of other real estate owned and repossessed assets, net (2,491) 330
 (2,161) (5,294) 9
 (5,285)
Valuation adjustments, net 
 (343) (343) 
 (47) (47)
Gains (losses), net (2) 78
 
 78
Gains (losses), net (1) 1,242
 
 1,242
Balance, end of period $33,054
 $(4,062) $28,992
 $34,244
 $(4,050) $30,194
  Nine Months Ended September 30,
  2018
  Gross Balance Valuation Allowance Net Balance
  (in thousands)
Balance, beginning of period $32,552
 $(4,012) $28,540
Transfers to other assets acquired through foreclosure, net 5,744
 
 5,744
Proceeds from sale of other real estate owned and repossessed assets, net (9,634) 841
 (8,793)
Charitable contribution (1) (6,895) 
 (6,895)
Valuation adjustments, net 
 (32) (32)
Gains (losses), net (3) 1,464
 
 1,464
Balance, end of period $23,231
 $(3,203) $20,028
       
  2017
Balance, beginning of period $54,138
 $(6,323) $47,815
Transfers to other assets acquired through foreclosure, net 1,812
 
 1,812
Proceeds from sale of other real estate owned and repossessed assets, net (23,129) 2,381
 (20,748)
Valuation adjustments, net 
 (120) (120)
Gains (losses), net (3) 233
 
 233
Balance, end of period $33,054
 $(4,062) $28,992

(1)Represents a contribution of OREO property to the Company's charitable foundation. See Note 16. Related Party Transactions for further discussion.
(2)
There were no zero and $1.0 millioninnet gains related to initial transfers to other assets during the three months ended September 30,March 31, 2019 and 2018, and 2017, respectively.
(3)There were $1.0 million and $0.1 million in net gains related to initial transfers to other assets during the nine months ended September 30, 2018 and 2017, respectively.
At September 30,March 31, 2019 and 2018, and 2017, the majority of the Company’s repossessed assets consisted of properties located in Nevada. The Company held 1210 properties at September 30, 2018,March 31, 2019, compared to 1911 at December 31, 2017,2018, and 2018 at September 30, 2017.March 31, 2018.

5.6. OTHER BORROWINGS
The following table summarizes the Company’s borrowings as of September 30, 2018March 31, 2019 and December 31, 2017:2018: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Short-Term:        
Federal funds purchased $
 $256,000
FHLB advances $
 $390,000
 
 235,000
Total short-term borrowings $
 $390,000
 $
 $491,000
The Company maintains otherfederal fund lines of credit with correspondent banks totaling $306.0 million. These lines$955.0 million as of credit are unsecured, ofMarch 31, 2019, which $45.0 million have a floating interest rate of one-month LIBOR plus 3.25% and $261.0 million have a rate equivalentrates comparable to the federal funds effective rate.rate plus 0.10% to 0.20%. As of September 30, 2018 and DecemberMarch 31, 2017,2019, there were no outstanding balances on the Company's lines of credit. As of December 31, 2018, outstanding balances on these federal fund lines of credit totaled $256.0 million.
The Company also maintains lines of credit with the FHLB and the FRB. The Company’s borrowing capacity is determined based on collateral pledged, generally consisting of investment securities and loans, at the time of the borrowing. At September 30, 2018,March 31, 2019, the Company had no short-term FHLB overnight advances. At December 31, 2017, short-term2018, the Company had $235.0 million of FHLB overnight advances, of $390.0 million hadwith an interest rate of 1.41%2.56%.
Other short-term borrowing sources available to the Company include Federal funds purchased from correspondent banks and customer repurchase agreements. Federal funds purchased have a rate equivalent to the federal funds effective rate plus 0.10% to 0.20% and customer repurchase agreements, which have an average rate of 0.15%. There were no outstanding balances on Federal funds purchased as of September 30, 2018At March 31, 2019 and December 31, 2017. At September 30, 2018, and December 31, 2017, customer repurchase agreements totaled $21.0$15.1 million and $26.0$22.4 million, respectively.
As of September 30, 2018March 31, 2019 and December 31, 2017,2018, the Company had additional available credit with the FHLB of approximately $2.84$2.97 billion and $1.91$2.52 billion, respectively, and with the FRB of approximately $1.40$1.32 billion and $1.11$1.31 billion, respectively.

6.7. QUALIFYING DEBT
Subordinated Debt
The Parent has $175.0 million of subordinated debentures, which were recorded net of issuance costs of $5.5 million, and mature July 1, 2056. Beginning on or after July 1, 2021, the Company may redeem the debentures, in whole or in part, at their principal amount plus any accrued and unpaid interest. The debentures have a fixed interest rate of 6.25% per annum.
WAB has $150.0 million of subordinated debt, which was recorded net of debt issuance costs of $1.8 million, and matures July 15, 2025. The subordinated debt has a fixed interest rate of 5.00% through June 30, 2020 and then converts to a variable rate of 3.20% plus three-month LIBOR through maturity.
To hedge the interest rate risk on the Company's subordinated debt issuances, the Company entered into fair value interest rate hedges with receive fixed/pay variable swaps.
The carrying value of all subordinated debt issuances, which includes the fair value of the related hedges, totals $290.8$305.0 million and $308.6$299.4 million at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.
Junior Subordinated Debt
The Company has formed or acquired through acquisition eight statutory business trusts, which exist for the exclusive purpose of issuing Cumulative Trust Preferred Securities.
With the exception of debt issued by Bridge Capital Trust I and Bridge Capital Trust II, junior subordinated debt is recorded at fair value at each reporting date due to the FVO election made by the Company under ASC 825. The Company did not make the FVO election for the junior subordinated debt acquired as part of the Bridge acquisition. Accordingly, the carrying value of these trusts does not reflect the current fair value of the debt and includes a fair market value adjustment established at acquisition that is being accreted over the remaining life of the trusts.
The carrying value of junior subordinated debt was $68.3$69.0 million at eachand $61.1 million as of the periods ended September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. The weighted average interest rate of all junior subordinated debt as of September 30, 2018March 31, 2019 was 4.74%4.94%, which is three-month LIBOR plus the contractual spread of 2.34%, compared to a weighted average interest rate of 4.03%5.15% at December 31, 2017.2018.

7.8. STOCKHOLDERS' EQUITY
Stock-Based Compensation
Restricted Stock Awards
Restricted stock awards granted to employees generally vest over a three-year period. Stock grants made to non-employee WAL directors in 2018 became2019 will be fully vested at June 30, 2018.on July 1, 2019. The Company estimates the compensation expense for stock grants based upon the grant date fair value. Stock compensation expense is recognized on a straight-line basis over the requisite service period for the entire award. The aggregate grant date fair value for the restricted stock awards granted during the three and nine months ended September 30,March 31, 2019 and 2018 was $0.7$20.7 million and $23.7$21.9 million, respectively. Stock compensation expense related to restricted stock awards and stock options granted to employees are included in Salaries and employee benefits in the Consolidated Income Statement. For restricted stock awards granted to WAL directors, the related stock compensation expense is included in Legal, professional, and directors' fees. For each of the three and nine months ended September 30,March 31, 2019 and 2018, the Company recognized $3.4$4.3 million and $12.4 million, respectively, in stock-based compensation expense related to all restricted stock award grants, compared to $2.7 million and $11.3 million for the three and nine months ended September 30, 2017, respectively.grants.
In addition, the Company previously granted shares of restricted stock to certain members of executive management that had both performance and service conditions that affect vesting. There were no such grants made during the three and nine months ended September 30,March 31, 2019 and 2018, however expense is still being recognized for the grants made in 2016 and 2017 as they also have a three-year vesting period. For the three and nine months ended September 30, 2018,March 31, 2019, the Company recognized $0.6$0.5 million and $1.9 million, respectively, in stock-based compensation expense related to these performance-based restricted stock grants, compared to $0.8 million and $1.6$0.6 million for the three and nine months ended September 30, 2017, respectively.March 31, 2018.
Performance Stock Units
The Company grants members of its executive management performance stock units that do not vest unless the Company achieves a specified cumulative EPS target over a three-year performance period. The number of shares issued will vary based on the cumulative EPS target that is achieved. The Company estimates the cost of performance stock units based upon the grant date fair value and expected vesting percentage over the three-year performance period. For the three and nine months ended September 30, 2018,March 31, 2019, the Company recognized $1.5$1.7 million and $4.8 million, respectively, in stock-based compensation expense related to these performance stock units, compared to $1.9 million and $4.5$1.6 million for the three and nine months ended September 30, 2017, respectively.March 31, 2018.
The three-year performance period for the 20152016 grant ended on December 31, 2017,2018, and the Company's cumulative EPS for the performance period exceeded the level required for a maximum award under the terms of the grant. As a result, executive management members were entitled to the maximum award of 202,074202,776 shares, which was paid out in the first quarter of 2018.2019.
Common Stock Repurchase
On December 12, 2018, the Company announced that it had adopted a common stock repurchase plan, pursuant to which the Company is authorized to repurchase up to $250.0 million of its shares of common stock. During the three months ended March 31, 2019, the Company repurchased 940,915 shares of its common stock, representing approximately 1% of the Company's outstanding shares, pursuant to the repurchase plan. The shares were repurchased at a weighted average price of $40.30, for a total payment of $37.9 million.
Treasury Shares
Treasury share purchases represent shares surrendered to the Company equal in value to the statutory payroll tax withholding obligations arising from the vesting of employee restricted stock awards. During the three and nine months ended September 30, 2018, theThe Company purchased 173,007 treasury shares of 18,402 and 201,354, respectively, at a weighted average price of $57.81 and $58.91$45.66 per share respectively. During the three and nine months ended September 30, 2017, the Company purchased180,867 treasury shares of 64,705 and 266,883, respectively, at a weighted average price of $51.82$59.02 per share during the three months ended March 31, 2019 and $51.10 per share,2018, respectively.

8.9. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
The following table summarizes the changes in accumulated other comprehensive income (loss) by component, net of tax, for the periods indicated: 
  Three Months Ended September 30,
  Unrealized holding (losses) gains on AFS Unrealized holding gains (losses) on SERP Unrealized holding gains (losses) on junior subordinated debt Impairment loss on securities Total
  (in thousands)
Balance, June 30, 2018 $(61,859) $446
 $9,954
 $144
 $(51,315)
Other comprehensive (loss) income before reclassifications (22,462) (12) (2,028) 
 (24,502)
Amounts reclassified from AOCI 5,454
 
 
 
 5,454
Net current-period other comprehensive (loss) income (17,008) (12) (2,028) 
 (19,048)
Balance, September 30, 2018 $(78,867) $434
 $7,926
 $144
 $(70,363)
           
Balance, June 30, 2017 $(449) $157
 $6,638
 $144
 $6,490
Other comprehensive income (loss) before reclassifications 1,116
 114
 641
 
 1,871
Amounts reclassified from AOCI (197) 
 
 
 (197)
Net current-period other comprehensive income (loss) 919
 114
 641
 
 1,674
Balance, September 30, 2017 $470
 $271
 $7,279
 $144
 $8,164
 Nine Months Ended September 30, Three Months Ended March 31,
 Unrealized holding (losses) gains on AFS Unrealized holding gains (losses) on SERP Unrealized holding gains (losses) on junior subordinated debt Impairment loss on securities Total Unrealized holding gains (losses) on AFS Unrealized holding gains (losses) on SERP Unrealized holding gains (losses) on junior subordinated debt Impairment loss on securities Total
 (in thousands)
Balance, December 31, 2018 $(47,591) $392
 $13,433
 $144
 $(33,622)
Other comprehensive income (loss) before reclassifications 31,377
 (18) (5,928) 
 25,431
Amounts reclassified from AOCI 
 
 
 
 
Net current-period other comprehensive income (loss) 31,377
 (18) (5,928) 
 25,431
Balance, March 31, 2019 $(16,214) $374
 $7,505
 $144
 $(8,191)
 (in thousands)          
Balance, December 31, 2017 $(10,026) $385
 $6,352
 $144
 $(3,145) $(10,026) $385
 $6,352
 $144
 $(3,145)
Balance, January 1, 2018 (1) (12,556) 469
 7,740
 144
 (4,203) (12,556) 469
 7,740
 144
 (4,203)
Other comprehensive (loss) income before reclassifications (71,765) (35) 186
 
 (71,614) (38,914) (11) 1,466
 
 (37,459)
Amounts reclassified from AOCI 5,454
 
 
 
 5,454
 
 
 
 
 
Net current-period other comprehensive (loss) income (66,311) (35) 186
 
 (66,160) (38,914) (11) 1,466
 
 (37,459)
Balance, September 30, 2018 $(78,867) $434
 $7,926
 $144
 $(70,363)
          
Balance, December 31, 2016 $(14,916) $121
 $9,956
 $144
 $(4,695)
Other comprehensive income (loss) before reclassifications 15,947
 150
 (2,677) 
 13,420
Amounts reclassified from AOCI (561) 
 
 
 (561)
Net current-period other comprehensive income (loss) 15,386
 150
 (2,677) 
 12,859
Balance, September 30, 2017 $470
 $271
 $7,279
 $144
 $8,164
Balance, March 31, 2018 $(51,470) $458
 $9,206
 $144
 $(41,662)
(1)As adjusted for adoption of ASU 2016-01 and ASU 2018-02, see "Note 1. Summary2018-02. The cumulative effect of Significant Accounting Policies" for further discussion.adoption of this guidance at January 1, 2018 resulted in an increase to retained earnings of $1.1 million and a corresponding decrease to accumulated other comprehensive income.
The following table presents reclassificationsDuring the three months ended March 31, 2019 and 2018, there were no amounts reclassified out of accumulated other comprehensive income (loss):loss. 
  Three Months Ended September 30, Nine Months Ended September 30,
Income Statement Classification 2018 2017 2018 2017
  (in thousands)
(Loss) gain on sales of investment securities, net $(7,232) $319
 $(7,232) $907
Income tax expense (benefit) 1,778
 (122) 1,778
 (346)
Net of tax $(5,454) $197
 $(5,454) $561

9.10. DERIVATIVES AND HEDGING ACTIVITIES
The Company is a party to various derivative instruments. Derivative instruments are contracts between two or more parties that have a notional amount and an underlying variable, require a small or no initial investment, and allow for the net settlement of positions. A derivative’s notional amount serves as the basis for the payment provision of the contract and takes the form of units, such as shares or dollars. A derivative’s underlying variable is a specified interest rate, security price, commodity price, foreign exchange rate, index, or other variable. The interaction between the notional amount and the underlying variable determines the number of units to be exchanged between the parties and influences the fair value of the derivative contract.
The primary type of derivatives that the Company uses are interest rate swaps. Generally, these instruments are used to help manage the Company's exposure to interest rate risk and meet client financing and hedging needs.
Derivatives are recorded at fair value in the Consolidated Balance Sheets, after taking into account the effects of bilateral collateral and master netting agreements. These agreements allow the Company to settle all derivative contracts held with the same counterparty on a net basis, and to offset net derivative positions with related cash collateral, where applicable.
As of September 30, 2018,March 31, 2019, December 31, 2017,2018, and September 30, 2017,March 31, 2018, the Company does not have any outstanding cash flow hedges.

Derivatives Designated in Hedge Relationships
The Company utilizes derivatives that have been designated as part of a hedge relationship in accordance with the applicable accounting guidance to minimize the exposure to changes in benchmark interest rates and volatility of net interest income and EVE to interest rate fluctuations. The primary derivative instruments used to manage interest rate risk are interest rate swaps, which convert the contractual interest rate index of agreed-upon amounts of assets and liabilities (i.e., notional amounts) to another interest rate index.
The Company has entered into pay fixed/receive variable interest rate swaps designated as fair value hedges of certain fixed rate loans. As a result, the Company receives variable-rate interest payments in exchange for making fixed-rate payments over the lives of the contracts without exchanging the notional amounts.
The Company has also entered into receive fixed/pay variable interest rate swaps, designated as fair value hedges on its fixed rate subordinated debt offerings. As a result, the Company is paying a floating rate of three-month LIBOR plus 3.16% and is receiving semi-annual fixed payments of 5.00% to match the payments on the $150.0 million subordinated debt. For the fair value hedge on the Parent's $175.0 million subordinated debentures issued on June 16, 2016, the Company is paying a floating rate of three-month LIBOR plus 3.25% and is receiving quarterly fixed payments of 6.25% to match the payments on the debt.
Derivatives Not Designated in Hedge Relationships

Management also enters into certain foreign exchange derivative contracts and back-to-back interest rate swaps which are not designated as accounting hedges. Foreign exchange derivative contracts include spot, forward, and forward window contracts. The purpose of these derivative contracts is to mitigate foreign currency risk on transactions entered into, or on behalf of customers. Contracts with customers, along with the related derivative trades that the Company places, are both remeasured at fair value, and are referred to as economic hedges since they economically offset the Company's exposure. The Company's back-to-back interest rate swaps are used to manage long-term interest rate risk.

As of each of the periods ended September 30, 2018, DecemberMarch 31, 2017, and September 30, 2017,2019, derivatives not designated as hedging instruments were in a net asset position of $0.2 million.million, compared to a net asset position of $0.3 million at December 31, 2018 and March 31, 2018. For the three months ended September 30,March 31, 2019 and 2018, and 2017, net changes in the fair value related to these derivative contracts totaled $1.1$1.2 million and $0.8$0.5 million, respectively, and $3.5 million and $2.6 million for the nine months ended September 30, 2018 and 2017, respectively, and are included as part of Foreign currency income in the Consolidated Income Statements.


As of September 30, 2018March 31, 2019 and December 31, 2017,2018, the following amounts are reflected in the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges:

 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 Carrying Value of Hedged Assets/(Liabilities) Cumulative Amount of the Fair Value Hedging Adjustment (1) Carrying Value of Hedged Assets/(Liabilities) Cumulative Amount of the Fair Value Hedging Adjustment (1) Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1) Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1)
 (in thousands) (in thousands)
Loans - HFI, net of deferred loan fees and costs $635,184
 $1,997
 $699,452
 $41,919
 $656,346
 $33,123
 $650,428
 $23,039
Qualifying debt (290,801) 28,160
 (308,608) 9,959
 (305,002) 14,222
 (299,401) 19,691
(1)Included in the carrying value of the hedged assets/(liabilities).

For the Company's derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings in the same line item as the offsetting loss or gain on the related interest rate swaps. For loans, the gain or loss on the hedged item is included in interest income and for subordinated debt, the gain or loss on the hedged item is included in interest expense.

Fair Values, Volume of Activity, and Gain/Loss Information Related to Derivative Instruments
The following table summarizes the fair values of the Company's derivative instruments on a gross and net basis as of September 30, 2018,March 31, 2019, December 31, 2017,2018, and September 30, 2017.March 31, 2018. The derivative asset and liability balances are presented on a gross basis, prior to the application of bilateral collateral and master netting agreements. Total derivative assets and liabilities are adjusted to take into account the impact of legally enforceable master netting agreements that allow the Company to settle all derivative contracts with the same counterparty on a net basis and to offset the net derivative position with the related collateral. Where master netting agreements are not in effect or are not enforceable under bankruptcy laws, the Company does not adjust those derivative amounts with counterparties. The fair value of derivative contracts, after taking into account the effects of master netting agreements, is included in other assets or other liabilities in the Consolidated Balance Sheets, as indicated in the following table:
September 30, 2018 December 31, 2017 September 30, 2017March 31, 2019 December 31, 2018 March 31, 2018
  Fair Value   Fair Value   Fair Value  Fair Value   Fair Value   Fair Value
Notional
Amount
 Derivative Assets Derivative Liabilities Notional
Amount
 Derivative Assets Derivative Liabilities Notional
Amount
 Derivative Assets Derivative LiabilitiesNotional
Amount
 Derivative Assets Derivative Liabilities Notional
Amount
 Derivative Assets Derivative Liabilities Notional
Amount
 Derivative Assets Derivative Liabilities
(in thousands)(in thousands)
Derivatives designated as hedging instruments:Derivatives designated as hedging instruments:              Derivatives designated as hedging instruments:              
Fair value hedges                                  
Interest rate swaps$971,408
 $7,883
 $38,040
 $993,432
 $1,703
 $53,581
 $1,016,694
 $1,656
 $59,346
$961,493
 $987
 $48,332
 $965,705
 $2,162
 $44,892
 $989,379
 $3,533
 $42,789
Total971,408
 7,883
 38,040
 993,432
 1,703
 53,581
 1,016,694
 1,656
 59,346
961,493
 987
 48,332
 965,705
 2,162
 44,892
 989,379
 3,533
 42,789
Netting adjustments (1)
 6,119
 6,119
 
 896
 896
 
 1,588
 1,588

 987
 987
 
 2,162
 2,162
 
 3,493
 3,493
Net derivatives in the balance sheet$971,408
 $1,764
 $31,921
 $993,432
 $807
 $52,685
 $1,016,694
 $68
 $57,758
$961,493
 $
 $47,345
 $965,705
 $
 $42,730
 $989,379
 $40
 $39,296
                                  
Derivatives not designated as hedging instruments:Derivatives not designated as hedging instruments:              Derivatives not designated as hedging instruments:              
Foreign currency contracts (2)$47,349
 $1,003
 $841
 $85,335
 $1,232
 $983
 $68,122
 $494
 $291
$42,113
 $715
 $511
 $49,690
 $454
 $201
 $90,855
 $684
 $394
Interest rate swaps2,348
 92
 92
 36,969
 776
 776
 35,578
 641
 641
2,348
 12
 12
 2,378
 27
 27
 36,840
 1,170
 1,170
Total$49,697
 $1,095
 $933
 $122,304
 $2,008
 $1,759
 $103,700
 $1,135
 $932
$44,461
 $727
 $523
 $52,068
 $481
 $228
 $127,695
 $1,854
 $1,564
(1)Netting adjustments represent the amounts recorded to convert the Company's derivative balances from a gross basis to a net basis in accordance with the applicable accounting guidance.
(2)Prior period derivative asset / liability netting adjustments have been made to conform to current presentation.
Counterparty Credit Risk
Like other financial instruments, derivatives contain an element of credit risk. This risk is measured as the expected positive replacement value of the contracts. Management generally enters into bilateral collateral and master netting agreements that provide for the net settlement of all contracts with the same counterparty. Additionally, management monitors counterparty credit risk exposure on each contract to determine appropriate limits on the Company's total credit exposure across all product

types. In general, the Company has a zero credit threshold with regard to derivative exposure with counterparties. Management reviews the Company's collateral positions on a daily basis and exchanges collateral with counterparties in accordance with standard ISDA documentation and other related agreements. The Company generally holds collateral in the form of cash deposits or highly rated securities issued by the U.S. Treasury or government-sponsored enterprises, such as GNMA, FNMA, and FHLMC. The total collateral netted against net derivative liabilities totaled $34.7$48.3 million at September 30, 2018, $53.6March 31, 2019, $44.9 million at December 31, 2017,2018, and $59.3$40.1 million at September 30, 2017.March 31, 2018.

The following table summarizes the Company's largest exposure to an individual counterparty at the dates indicated:
 September 30, 2018 December 31, 2017 September 30, 2017 March 31, 2019 December 31, 2018 March 31, 2018
 (in thousands) (in thousands)
Largest gross exposure (derivative asset) to an individual counterparty $5,802
 $893
 $945
 $987
 $1,411
 $2,515
Collateral posted by this counterparty 
 
 
 
 
 
Derivative liability with this counterparty 9,567
 40,340
 44,053
 32,250
 23,906
 20,624
Collateral pledged to this counterparty 22,179
 60,476
 65,051
 40,035
 25,761
 29,719
Net exposure after netting adjustments and collateral $
 $
 $
 $
 $
 $
Credit Risk Contingent Features
Management has entered into certain derivative contracts that require the Company to post collateral to the counterparties when these contracts are in a net liability position. Conversely, the counterparties may be required to post collateral when these contracts are in a net asset position. The amount of collateral to be posted is based on the amount of the net liability and exposure thresholds. As of September 30, 2018,March 31, 2019, December 31, 2017,2018, and September 30, 2017March 31, 2018 the aggregate fair value of all derivative contracts with credit risk contingent features (i.e., those containing collateral posting provisions) held by the Company that were in a net liability position totaled $31.9$47.3 million, $52.7$42.7 million, and $57.8$39.3 million, respectively. As of September 30, 2018,March 31, 2019, the Company was in an over-collateralized net position of $17.7$14.2 million after considering $52.4$62.5 million of collateral held in the form of cash and securities. As of December 31, 20172018 and September 30, 2017,March 31, 2018, the Company was in an over-collateralized position of $25.0$7.6 million and $25.1$12.1 million, respectively.
10.11. EARNINGS PER SHARE
Diluted EPS is based on the weighted average outstanding common shares during each period, including common stock equivalents. Basic EPS is based on the weighted average outstanding common shares during the period.
The following table presents the calculation of basic and diluted EPS: 
 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
 (in thousands, except per share amounts) (in thousands, except per share amounts)
Weighted average shares - basic 104,768
 104,221
 104,664
 104,124
 104,033
 104,530
Dilutive effect of stock awards 680
 721
 734
 817
 442
 794
Weighted average shares - diluted 105,448
 104,942
 105,398
 104,941
 104,475
 105,324
Net income $111,123
 $82,844
 $316,702
 $236,146
 $120,796
 $100,900
Earnings per share - basic 1.06
 0.79
 3.03
 2.27
 1.16
 0.97
Earnings per share - diluted 1.05
 0.79
 3.00
 2.25
 1.16
 0.96
The Company had no anti-dilutive stock options outstanding at each of the periods ended September 30, 2018March 31, 2019 and 2017.2018.

11.12. INCOME TAXES  
The effective tax rate was 6.32%17.45% and 29.64%17.10% for the three months ended September 30,March 31, 2019 and 2018, and 2017, respectively. For the nine months ended September 30, 2018 and 2017, the Company's effective tax rate was 14.48% and 27.89%, respectively. The decreaseincrease in the effective tax rate from the three and nine months ended September 30, 2017March 31, 2018 is due primarily to the decreasean increase in the Federal statutory rate effective in 2018pre-tax book income and management's decision during the quarter to carryback its 2017 federal NOLs. These federal NOLs resulteda smaller benefit from the acceleration of deductions into and deferral of revenue from 2017. As the federal income tax rate was higher in the years to which the carryback is applicable, a larger tax benefit results from the decision to carryback the 2017 federal NOLs, rather than carryforward these losses to future taxable years.excess stock compensation deduction.
As of September 30, 2018,March 31, 2019, the net deferred tax asset was $43.5$22.3 million, an increasea decrease of $37.7$9.7 million from December 31, 2017.2018. This overall increasedecrease in the net deferred tax asset was primarily the result of the deferral of WAB's dividend from the real estate investment trust from 2017 to 2018 and decreasesan increase in the fair market value of AFS securities, which were not fully offset by the utilization of NOL and credit carryovers.securities.
Although realization is not assured, the Company believes that the realization of the recognized deferred tax asset of $43.5$22.3 million at September 30, 2018March 31, 2019 is more-likely-than-not based on expectations as to future taxable income and based on available tax planning strategies that could be implemented if necessary to prevent a carryover from expiring.
At September 30, 2018March 31, 2019 and December 31, 2017,2018, the Company had noa $2.4 million deferred tax valuation allowance.allowance related to net capital loss carryovers.
As of September 30, 2018,March 31, 2019, the Company’s gross federal NOL carryovers after current year-to-date utilization, all of which are subject to limitations under Section 382 of the IRC, totaled approximately $49.8$47.4 million for which an ending deferred tax asset of $6.3$5.8 million has been recorded, reflecting the expected benefit of these federal NOL carryovers remaining. The Company also has varying gross amounts of state NOL carryovers, primarily with California andthe most significant in Arizona. The ending gross California and Arizona NOL carryovers totaled approximately $7.3 million and $5.0 million respectively.after current year-to-date utilization. A deferred tax asset of $1.1$0.3 million has been recorded to reflect the expected benefit of all state NOL carryovers remaining.
Investments in LIHTC
The Company invests in LIHTC funds that are designed to generate a return primarily through the realization of federal tax credits.
Investments in LIHTC total $295.1$332.0 million and $267.0$342.4 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. Unfunded LIHTC obligations are included as part of other liabilities in the Consolidated Balance Sheets and total $139.4$147.3 million and $151.3$171.7 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. For the three months ended September 30,March 31, 2019 and 2018, and 2017, $9.0$10.1 million and $6.8 million, respectively, of amortization related to LIHTC investments was recognized as a component of income tax expense. For the nine months ended September 30, 2018 and 2017, $26.5 million and $19.5$8.1 million, respectively, of amortization related to LIHTC investments was recognized as a component of income tax expense.
12.13. COMMITMENTS AND CONTINGENCIES
Unfunded Commitments and Letters of Credit
The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. They involve, to varying degrees, elements of credit risk in excess of amounts recognized in the Consolidated Balance Sheets.
Lines of credit are obligations to lend money to a borrower. Credit risk arises when the borrower's current financial condition may indicate less ability to pay than when the commitment was originally made. In the case of standby letters of credit, the risk arises from the potential failure of the customer to perform according to the terms of a contract. In such a situation, the third party might draw on the standby letter of credit to pay for completion of the contract and the Company would look to its customer to repay these funds with interest. To minimize the risk, the Company uses the same credit policies in making commitments and conditional obligations as it would for a loan to that customer.
Standby letters of credit and financial guarantees are commitments issued by the Company to guarantee the performance of a customer to a third party in borrowing arrangements. The Company generally has recourse to recover from the customer any amounts paid under the guarantees. Typically, letters of credit issued have expiration dates within one year.

A summary of the contractual amounts for unfunded commitments and letters of credit are as follows: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Commitments to extend credit, including unsecured loan commitments of $594,074 at September 30, 2018 and $364,638 at December 31, 2017 $6,798,062
 $5,851,158
Commitments to extend credit, including unsecured loan commitments of $864,740 at March 31, 2019 and $770,114 at December 31, 2018 $8,197,452
 $7,556,741
Credit card commitments and financial guarantees 218,993
 153,752
 251,675
 237,312
Standby letters of credit, including unsecured letters of credit of $16,940 at September 30, 2018 and $11,664 at December 31, 2017 216,636
 161,966
Standby letters of credit, including unsecured letters of credit of $16,336 at March 31, 2019 and $21,879 at December 31, 2018 262,320
 390,161
Total $7,233,691
 $6,166,876
 $8,711,447
 $8,184,214
Commitments to extend credit are agreements to lend to a customer provided that there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company enters into credit arrangements that generally provide for the termination of advances in the event of a covenant violation or other event of default. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the party. The commitments are collateralized by the same types of assets used as loan collateral.
The Company has exposure to credit losses from unfunded commitments and letters of credit. As funds have not been disbursed on these commitments, they are not reported as loans outstanding. Credit losses related to these commitments are included in other liabilities as a separate loss contingency and are not included in the allowance for credit losses reported in "Note 3. Loans, Leases and Allowance for Credit Losses" of these Unaudited Consolidated Financial Statements. This loss contingency for unfunded loan commitments and letters of credit was $7.6$9.2 million and $6.2$8.2 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. Changes to this liability are adjusted through other expense in the Consolidated Income Statement.
Concentrations of Lending Activities
The Company’s lending activities are driven in large part by the customers served in the market areas where the Company has branch offices in the states of Arizona, Nevada, and California. Despite the geographic concentration of lending activities, the Company does not have a single external customer from which it derives 10% or more of its revenues. The Company monitors concentrations within four broad categories: geography, industry, product, and collateral. The Company's loan portfolio includes significant credit exposure to the CRE market. As of September 30, 2018each of the periods ended March 31, 2019 and December 31, 2017,2018, CRE related loans accounted for approximately 50% and 52%49% of total loans, respectively.loans. Substantially all of these loans are secured by first liens with an initial loan to value ratio of generally not more than 75%. Approximately 37%35% and 36% of these CRE loans, excluding construction and land loans, were owner-occupied at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.
Contingencies
The Company is involved in various lawsuits of a routine nature that are being handled and defended in the ordinary course of the Company’s business. Expenses are being incurred in connection with these lawsuits, but in the opinion of management, based in part on consultation with outside legal counsel, the resolution of these lawsuits and associated defense costs will not have a material impact on the Company’s financial position, results of operations, or cash flows.
Lease Commitments
The Company leases the majority of its office locations and many of these leases contain multiple renewal options and provisions for increased rents. Total rent expense of $2.8 million for each of the three months ended September 30, 2018 and 2017 was included in Occupancy expense in these Unaudited Consolidated Financial Statements. For the nine months ended September 30, 2018 and 2017, total rent expense was $8.1 million and $8.2 million, respectively.

13.14. FAIR VALUE ACCOUNTING
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, the Company utilizes 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 825 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under ASC 825 are described in "Note 1. Summary of Significant Accounting Policies" of these Notes to Unaudited Consolidated Financial Statements.
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 the Company’s creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Company’s 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 the Company’s 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 in the fair value hierarchy are recognized as of the end of the month following the event or change in circumstances that caused the transfer.
Under ASC 825, the Company elected the FVO treatment for junior subordinated debt issued by WAL. This election is irrevocable and results in the recognition of unrealized gains and losses on these items at each reporting date. These unrealized gains and losses are recognized as part of other comprehensive income rather than earnings. The Company did not elect FVO treatment for the junior subordinated debt assumed in the Bridge Capital Holdings acquisition.
For the three and nine months ended September 30,March 31, 2019 and 2018, and 2017,unrealized gains and losses from fair value changes on junior subordinated debt and trading securities were as follows:
  Changes in Fair Values for Items Measured at Fair Value
Pursuant to Election of the Fair Value Option
  Unrealized Gain/(Loss) on Assets and Liabilities Measured at Fair Value, Net Interest Income on Securities Interest Expense on Junior Subordinated Debt Total Changes Included in Current-Period Earnings Changes Included in OCI
  (in thousands)
Three Months Ended September 30, 2018        
Junior subordinated debt $(2,689) $
 $1,056
 $1,056
 $(2,028)
Nine Months Ended September 30, 2018        
Junior subordinated debt $247
 $
 $2,979
 $2,979
 $186
Three Months Ended September 30, 2017          
Junior subordinated debt $1,035
 $
 $(835) $(835) $641
Nine Months Ended September 30, 2017          
Trading securities $
 $9
 $
 $9
 $
Junior subordinated debt (4,327) 
 (2,376) (2,376) (2,677)
Total $(4,327) $9
 $(2,376) $(2,367) $(2,677)
During the year ended December 31, 2017, the Company sold all of its trading securities. No significant gain or loss was recognized upon sale of these securities.

  Three Months Ended March 31,
  2019 2018
  (in thousands)
Unrealized gains/(losses) $(7,862) $1,944
Changes included in OCI, net of tax (5,928) 1,466
Fair value on a recurring basis
Financial assets and financial liabilities measured at fair value on a recurring basis include the following:
Trading securities: All of the Company’s trading securities, which consisted of MBS, were reported at fair value utilizing Level 2 inputs in the same manner as described above for AFS securities.
AFS securities: Securities classified as AFS are reported at fair value utilizing Level 2 inputs. For these securities, the Company obtains 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.
Equity securities: Preferred stock and CRA investments are reported at fair value utilizing Level 1 inputs.
Independent pricing service: The Company's independent pricing service provides pricing information on the majority of the Company's Level 1 and 2 AFS securities. For a small subset of securities, other pricing sources are used, including observed prices on publicly-traded securities and dealer quotes. Management independently evaluates the fair value measurements received from the Company's third party pricing service through multiple review steps. First, management reviews what has transpired in the marketplace with respect to interest rates, credit spreads, volatility, and mortgage rates, among other things, and develops an expectation of changes to the securities' valuations from the previous quarter. Then, management obtains market values from additional sources. The pricing service provides management with observable market data including interest rate curves and mortgage prepayment speed grids, as well as dealer quote sheets, new bond offering sheets, and historical trade documentation. Management reviews the assumptions and decides whether they are reasonable. Management may compare interest rates, credit spreads, and prepayments speeds used as part of the assumptions to those that management believes are reasonable. Management may price securities using the provided assumptions to determine whether they can develop similar prices on like securities. Any discrepancies between management’s review and the prices provided by the vendor are discussed with the vendor and the Company’s other valuation advisors. Lastly, management selects a sample of investment securities and compares the values provided by its primary third party pricing service to the market values obtained from secondary sources, including other pricing services and safekeeping statements, and evaluates those with notable variances.  In instances where there are discrepancies in pricing from various sources and management expectations, management may manually price

securities using currently observed market data to determine whether they can develop similar prices or may utilize bid information from broker dealers. Any remaining discrepancies between management’s review and the prices provided by the vendor are discussed with the vendor and/or the Company’s other valuation advisors.
Interest rate swaps: Interest rate swaps are reported at fair value utilizing Level 2 inputs. The Company obtains dealer quotations to value its interest rate swaps.
Junior subordinated debt: The Company estimates the fair value of its junior subordinated debt using a discounted cash flow model which incorporates the effect of the Company’s own credit risk in the fair value of the liabilities (Level 3). The Company’s cash flow assumptions are based on contractual cash flows as the Company anticipates that it will pay the debt according to its contractual terms.
As of September 30, 2018, the Company estimates the discount rate at 6.20%, which represents an implied credit spread of 3.80% plus three-month LIBOR (2.40%). As of December 31, 2017, the Company estimated the discount rate at 5.61%, which was a 3.92% credit spread plus three-month LIBOR (1.69%).

The fair value of assets and liabilities measured at fair value on a recurring basis was determined using the following inputs as of the periods presented: 
 Fair Value Measurements at the End of the Reporting Period Using: Fair Value Measurements at the End of the Reporting Period Using:
 Quoted Prices in Active Markets for Identical Assets
(Level 1)
 Significant Other Observable Inputs
(Level 2)
 Significant Unobservable Inputs
(Level 3)
 Fair Value Quoted Prices in Active Markets for Identical Assets
(Level 1)
 Significant Other Observable Inputs
(Level 2)
 Significant Unobservable Inputs
(Level 3)
 Fair Value
 (in thousands) (in thousands)
September 30, 2018        
March 31, 2019        
Assets:                
Available-for-sale debt securities                
CDO $
 $19,148
 $
 $19,148
 $
 $15,026
 $
 $15,026
Commercial MBS issued by GSEs 
 100,943
 
 100,943
 
 99,099
 
 99,099
Corporate debt securities 
 99,384
 
 99,384
 5,142
 91,900
 
 97,042
Private label residential MBS 
 855,942
 
 855,942
 
 935,347
 
 935,347
Residential MBS issued by GSEs 
 1,450,059
 
 1,450,059
 
 1,492,236
 
 1,492,236
Tax-exempt 
 504,907
 
 504,907
 
 536,990
 
 536,990
Trust preferred securities 
 28,617
 
 28,617
 
 28,617
 
 28,617
U.S. government sponsored agency securities 
 45,601
 
 45,601
 
 38,901
 
 38,901
U.S. treasury securities 
 2,475
 
 2,475
 
 989
 
 989
Total AFS debt securities $
 $3,107,076
 $
 $3,107,076
 $5,142
 $3,239,105
 $
 $3,244,247
Equity securities                
CRA investments 50,744
 
 
 50,744
 $51,614
 $
 $
 $51,614
Preferred stock 121,550
 
 
 121,550
 66,391
 
 
 66,391
Total equity securities $172,294
 $
 $
 $172,294
 $118,005
 $
 $
 $118,005
Derivative assets (1) $
 $8,978
 $
 $8,978
 $
 $1,714
 $
 $1,714
Liabilities:                
Junior subordinated debt (2) $
 $
 $55,987
 $55,987
 $
 $
 $56,546
 $56,546
Derivative liabilities (1) 
 38,973
 
 38,973
 
 48,855
 
 48,855
(1)Derivative assets and liabilities relate to interest rate swaps, see "Note 9.10. Derivatives and Hedging Activities." In addition, the carrying value of loans is decreased by $1,997$33,123 and the net carrying value of subordinated debt is increased by $28,160$14,222 as of September 30, 2018March 31, 2019 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.
(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.


 Fair Value Measurements at the End of the Reporting Period Using: Fair Value Measurements at the End of the Reporting Period Using:
 Quoted Prices in Active Markets for Identical Assets
(Level 1)
 Significant Other Observable Inputs
(Level 2)
 Significant Unobservable Inputs
(Level 3)
 Fair Value Quoted Prices in Active Markets for Identical Assets
(Level 1)
 Significant Other Observable Inputs
(Level 2)
 Significant Unobservable Inputs
(Level 3)
 Fair Value
 (in thousands) (in thousands)
December 31, 2017        
December 31, 2018        
Assets:                
Available-for-sale debt securities                
CDO $
 $21,857
 $
 $21,857
 $
 $15,327
 $
 $15,327
Commercial MBS issued by GSEs 
 109,077
 
 109,077
 
 100,106
 
 100,106
Corporate debt securities 
 103,483
 
 103,483
 
 99,380
 
 99,380
Private label residential MBS 
 868,524
 
 868,524
 
 924,594
 
 924,594
Residential MBS issued by GSEs 
 1,689,295
 
 1,689,295
 
 1,530,124
 
 1,530,124
Tax-exempt 
 510,910
 
 510,910
 
 538,668
 
 538,668
Trust preferred securities 
 28,617
 
 28,617
 
 28,617
 
 28,617
U.S. government sponsored agency securities 
 61,462
 
 61,462
 
 38,188
 
 38,188
U.S. treasury securities 
 2,482
 
 2,482
 
 1,984
 
 1,984
Available-for-sale equity securities        
Total AFS debt securities $
 $3,276,988
 $
 $3,276,988
Equity securities        
CRA investments 50,616
 
 
 50,616
 $51,142
 $
 $
 $51,142
Preferred stock 53,196
 
 
 53,196
 63,919
 
 
 63,919
Total AFS securities $103,812
 $3,395,707
 $
 $3,499,519
Total equity securities $115,061
 $
 $
 $115,061
Derivative assets (1) $
 $3,711
 $
 $3,711
 $
 $2,643
 $
 $2,643
Liabilities:                
Junior subordinated debt (2) $
 $
 $56,234
 $56,234
 $
 $
 $48,684
 $48,684
Derivative liabilities (1) 
 55,340
 
 55,340
 
 45,120
 
 45,120
(1)Derivative assets and liabilities relate to interest rate swaps, see "Note 9.10. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $41,919$23,039 and the net carrying value of subordinated debt is decreased by $9,959$19,691 as of December 31, 20172018 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.
(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.
For the three and nine months ended September 30,March 31, 2019 and 2018, and 2017, the change in Level 3 liabilities measured at fair value on a recurring basis was as follows:
  Junior Subordinated Debt
  Three Months Ended September 30, Nine Months Ended September 30,
  2018 2017 2018 2017
  (in thousands)
Beginning balance $(53,298) $(55,772) $(56,234) $(50,410)
Change in fair value (2,689) 1,035
 247
 (4,327)
Ending balance $(55,987) $(54,737) $(55,987) $(54,737)
  Junior Subordinated Debt
  Three Months Ended March 31,
  2019 2018
  (in thousands)
Beginning balance $(48,684) $(56,234)
Change in fair value (1) (7,862) 1,944
Ending balance $(56,546) $(54,290)
(1)Unrealized gains/(losses) attributable to changes in the fair value of junior subordinated debt are recorded as part of OCI, net of tax, and totaled $(5.9) million and $1.5 million for three months ended March 31, 2019 and 2018, respectively.

For Level 3 liabilities measured at fair value on a recurring basis as of September 30, 2018March 31, 2019 and December 31, 2017,2018, the significant unobservable inputs used in the fair value measurements were as follows:
  September 30, 2018 Valuation Technique Significant Unobservable Inputs Input Value
  (in thousands)      
Junior subordinated debt $55,987
 Discounted cash flow Implied credit rating of the Company 6.20%
  March 31, 2019 Valuation Technique Significant Unobservable Inputs Input Value
  (in thousands)      
Junior subordinated debt $56,546
 Discounted cash flow Implied credit rating of the Company 6.65%
 
  December 31, 2017 Valuation Technique Significant Unobservable Inputs Input Value
  (in thousands)      
Junior subordinated debt $56,234
 Discounted cash flow Implied credit rating of the Company 5.61%
  December 31, 2018 Valuation Technique Significant Unobservable Inputs Input Value
  (in thousands)      
Junior subordinated debt $48,684
 Discounted cash flow Implied credit rating of the Company 7.82%

The significant unobservable inputs used in the fair value measurement of the Company’s junior subordinated debt as of September 30, 2018March 31, 2019 and December 31, 20172018 was the implied credit risk for the Company, calculated as the difference between the 20-year 'BB' rated financial index over the corresponding swap index.
As of March 31, 2019, the Company estimates the discount rate at 6.65%, which represents an implied credit spread of 4.05% plus three-month LIBOR (2.60%). As of December 31, 2018, the Company estimated the discount rate at 7.82%, which was a 5.01% credit spread plus three-month LIBOR (2.81%).
Fair value on a nonrecurring basis
Certain assets are measured at fair value on a nonrecurring basis. That is, the assets 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). The following table presents such assets carried on the Balance Sheet by caption and by level within the ASC 825 hierarchy:
 Fair Value Measurements at the End of the Reporting Period Using Fair Value Measurements at the End of the Reporting Period Using
 Total 
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 
Active Markets for Similar Assets
(Level 2)
 
Unobservable Inputs
(Level 3)
 Total 
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 
Active Markets for Similar Assets
(Level 2)
 
Unobservable Inputs
(Level 3)
 (in thousands) (in thousands)
As of September 30, 2018;        
As of March 31, 2019;        
Impaired loans with specific valuation allowance $2,430
 $
 $
 $2,430
 $3,887
 $
 $
 $3,887
Impaired loans without specific valuation allowance (1) 81,445
 
 
 81,445
 122,723
 
 
 122,723
Other assets acquired through foreclosure 20,028
 
 
 20,028
 17,707
 
 
 17,707
As of December 31, 2017:        
As of December 31, 2018:        
Impaired loans with specific valuation allowance $13,709
 $
 $
 $13,709
 $305
 $
 $
 $305
Impaired loans without specific valuation allowance (1) 63,607
 
 
 63,607
 91,821
 
 
 91,821
Other assets acquired through foreclosure 28,540
 
 
 28,540
 17,924
 
 
 17,924
(1)Net of loan balances with charge-offs of $40.5$15.4 million and $15.6$19.4 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.

For Level 3 assets measured at fair value on a nonrecurring basis as of September 30, 2018March 31, 2019 and December 31, 2017,2018, the significant unobservable inputs used in the fair value measurements were as follows:
September 30, 2018 Valuation Technique(s) Significant Unobservable Inputs RangeMarch 31, 2019 Valuation Technique(s) Significant Unobservable Inputs Range
(in thousands) (in thousands) 
Impaired loans$83,875
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%$126,610
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%
Discounted cash flow method Discount rate Contractual loan rate 4.0% to 7.0% Discounted cash flow method Discount rate Contractual loan rate 4.0% to 7.0%
 Scheduled cash collections Probability of default 0% to 20.0%  Scheduled cash collections Probability of default 0% to 20.0%
 Proceeds from non-real estate collateral Loss given default 0% to 70.0%  Proceeds from non-real estate collateral Loss given default 0% to 70.0%
Other assets acquired through foreclosure20,028
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%17,707
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%
December 31, 2017 Valuation Technique(s) Significant Unobservable Inputs RangeDecember 31, 2018 Valuation Technique(s) Significant Unobservable Inputs Range
(in thousands) (in thousands) 
Impaired loans$77,316
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%$92,126
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%
Discounted cash flow method Discount rate Contractual loan rate 4.0% to 7.0% Discounted cash flow method Discount rate Contractual loan rate 4.0% to 7.0%
 Scheduled cash collections Probability of default 0% to 20.0%  Scheduled cash collections Probability of default 0% to 20.0%
 Proceeds from non-real estate collateral Loss given default 0% to 70.0%  Proceeds from non-real estate collateral Loss given default 0% to 70.0%
Other assets acquired through foreclosure28,540
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%17,924
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%
Impaired loans: The specific reserves for collateral dependent impaired loans are based on collateral value, net of estimated disposition costs and other identified quantitative inputs. Collateral value is determined based on independent third-party appraisals or internally-developed discounted cash flow analyses. Appraisals may utilize a single valuation approach or a combination of approaches, including comparable sales and the income approach. Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. In addition, when adjustments are made to an appraised value to reflect various factors such as the age of the appraisal or known changes in the market or the collateral, such valuation inputs are considered unobservable and the fair value measurement is categorized as a Level 3 measurement. Internal discounted cash flow analyses are also utilized to estimate the fair value of impaired loans, which considers internally-developed, unobservable inputs such as discount rates, default rates, and loss severity.
Total Level 3 impaired loans had an estimated fair value of $83.9$126.6 million and $77.3$92.1 million at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. Impaired loans with a specific valuation allowance had a gross estimated fair value of $3.6$5.2 million and $19.3$1.0 million at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively, which was reduced by a specific valuation allowance of $1.2$1.4 million and $5.6$0.7 million, respectively.
Other assets acquired through foreclosure: Other assets acquired through foreclosure consist of properties acquired as a result of, or in-lieu-of, foreclosure. These assets are initially reported at the fair value determined by independent appraisals using appraised value less estimated cost to sell. Such properties are generally re-appraised every twelve months. There is risk for subsequent volatility. Costs relating to the development or improvement of the assets are capitalized and costs relating to holding the assets are charged to expense.
Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. When significant adjustments are based on unobservable inputs, such as when a current appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and

appraised value and there is no observable market price, the resulting fair value measurement has been categorized as a Level 3 measurement. The Company had $20.0$17.7 million and $28.5$17.9 million of such assets at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.
Credit vs. non-credit losses
Under the provisions of ASC 320, Investments-Debt and Equity Securities, OTTI is separated into the amount of total impairment related to the credit loss and the amount of the total impairment related to all other factors. The amount of the total OTTI related to the credit loss is recognized in earnings. The amount of the total impairment related to all other factors is recognized in OCI.
For the three and nine months ended September 30,March 31, 2019 and 2018, and 2017, the Company determined that no securities experienced credit losses.
There is no OTTI balance recognized in comprehensive income as of September 30, 2018March 31, 2019 and 2017.2018.
Fair Value of Financial Instruments
The estimated fair value of the Company’s financial instruments is as follows: 
 September 30, 2018 March 31, 2019
 Carrying Amount Fair Value Carrying Amount Fair Value
 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total
 (in thousands) (in thousands)
Financial assets:                    
Federal funds sold $70,000
 $
 $70,000
 $
 $70,000
 $290,000
 $
 $290,000
 $
 $290,000
Investment securities:                    
HTM 288,290
 
 279,033
 
 279,033
 310,865
 
 331,083
 
 331,083
AFS 3,107,076
 
 3,107,076
 
 3,107,076
 3,244,247
 5,142
 3,239,105
 
 3,244,247
Equity 172,294
 172,294
 
 
 172,294
 118,005
 118,005
 
 
 118,005
Derivative assets 8,978
 
 8,978
 
 8,978
 1,714
 
 1,714
 
 1,714
Loans, net 16,582,754
 
 15,964,980
 83,875
 16,048,855
 17,961,761
 
 17,344,300
 126,610
 17,470,910
Accrued interest receivable 88,847
 
 88,847
 
 88,847
 98,128
 
 98,128
 
 98,128
Financial liabilities:                    
Deposits $18,908,580
 $
 $18,918,956
 $
 $18,918,956
 $20,208,740
 $
 $20,225,997
 $
 $20,225,997
Customer repurchase agreements 20,969
 
 20,969
 
 20,969
 15,141
 
 15,141
 
 15,141
Qualifying debt 359,082
 
 328,448
 67,013
 395,461
 373,996
 
 332,988
 67,730
 400,718
Derivative liabilities 38,973
 
 38,973
 
 38,973
 48,855
 
 48,855
 
 48,855
Accrued interest payable 14,268
 
 14,268
 
 14,268
 15,853
 
 15,853
 
 15,853
 December 31, 2017 December 31, 2018
 Carrying Amount Fair Value Carrying Amount Fair Value
 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total
 (in thousands) (in thousands)
Financial assets:                    
Investment securities:                    
HTM $255,050
 $
 $256,314
 $
 $256,314
 $302,905
 $
 $298,648
 $
 $298,648
AFS 3,499,519
 103,812
 3,395,707
 
 3,499,519
 3,276,988
 
 3,276,988
 
 3,276,988
Equity securities 115,061
 115,061
 
 
 115,061
Derivative assets 3,711
 
 3,711
 
 3,711
 2,643
 
 2,643
 
 2,643
Loans, net 14,953,885
 
 14,577,010
 77,316
 14,654,326
 17,557,912
 
 16,857,852
 92,126
 16,949,978
Accrued interest receivable 85,517
 
 85,517
 
 85,517
 101,275
 
 101,275
 
 101,275
Financial liabilities:                    
Deposits $16,972,532
 $
 $16,980,066
 $
 $16,980,066
 $19,177,447
 $
 $19,188,216
 $
 $19,188,216
Customer repurchase agreements 26,017
 
 26,017
 
 26,017
 22,411
 
 22,411
 
 22,411
FHLB advances 390,000
 
 390,000
 
 390,000
Other borrowings 491,000
 
 491,000
 
 491,000
Qualifying debt 376,905
 
 336,803
 67,210
 404,013
 360,458
 
 323,572
 57,924
 381,496
Derivative liabilities 55,340
 
 55,340
 
 55,340
 45,120
 
 45,120
 
 45,120
Accrued interest payable 16,366
 
 16,366
 
 16,366
 20,463
 
 20,463
 
 20,463

Interest rate risk
The Company assumes interest rate risk (the risk to the Company’s earnings and capital from changes in interest rate levels) as a result of its normal operations. As a result, the fair values of the Company’s financial instruments, as well as its future net interest income will change when interest rate levels change and that change may be either favorable or unfavorable to the Company.
Interest rate risk exposure is measured using interest rate sensitivity analysis to determine the Company's change in EVE and net interest income resulting from hypothetical changes in interest rates. If potential changes to EVE and net interest income resulting from hypothetical interest rate changes are not within the limits established by the BOD, the BOD may direct management to adjust the asset and liability mix to bring interest rate risk within BOD-approved limits.
WAB has an ALCO charged with managing interest rate risk within the BOD-approved limits. Limits are structured to preclude an interest rate risk profile that does not conform to both management and BOD risk tolerances without ALCO approval. There is also ALCO reporting at the Parent level for reviewing interest rate risk for the Company, which gets reported to the BOD and its Finance and Investment Committee.
Fair value of commitments
The estimated fair value of standby letters of credit outstanding at September 30, 2018March 31, 2019 and December 31, 20172018 is insignificant. Loan commitments on which the committed interest rates are less than the current market rate are also insignificant at September 30, 2018March 31, 2019 and December 31, 2017.2018.

14.15. SEGMENTS
The Company's reportable segments are aggregated based primarily on geographic location, services offered, and markets served. The Company's regional segments, which include Arizona, Nevada, Southern California, and Northern California, provide full service banking and related services to their respective markets. The operations from the regional segments correspond to the following banking divisions: ABA in Arizona, BON and FIB in Nevada, TPB in Southern California, and Bridge in Northern California.
The Company's NBL segments provide specialized banking services to niche markets. The Company's NBL reportable segments include HOA Services, Public & Nonprofit Finance, Technology & Innovation, HFF, and Other NBLs. These NBLs are managed centrally and are broader in geographic scope than the Company's other segments, though still predominately located within the Company's core market areas.
The Corporate & Other segment consists of corporate-related items, income and expense items not allocated to the Company's other reportable segments, and inter-segment eliminations.
The Company's segment reporting process begins with the assignment of all loan and deposit accounts directly to the segments where these products are originated and/or serviced. Equity capital is assigned to each segment based on the risk profile of their assets and liabilities. With the exception of goodwill, which is assigned a 100% weighting, equity capital allocations ranged from 0% to 12% during the year, with a funds credit provided for the use of this equity as a funding source. Any excess or deficient equity not allocated to segments based on risk is assigned to the Corporate & Other segment.
Net interest income, provision for credit losses, and non-interest expense amounts are recorded in their respective segment to the extent that the amounts are directly attributable to those segments. Net interest income is recorded in each segment on a TEB with a corresponding increase in income tax expense, which is eliminated in the Corporate & Other segment.
Further, net interest income of a reportable segment includes a funds transfer pricing process that matches assets and liabilities with similar interest rate sensitivity and maturity characteristics. Using this funds transfer pricing methodology, liquidity is transferred between users and providers. A net user of funds has lending/investing in excess of deposits/borrowings and a net provider of funds has deposits/borrowings in excess of lending/investing. A segment that is a user of funds is charged for the use of funds, while a provider of funds is credited through funds transfer pricing, which is determined based on the average life of the assets or liabilities in the portfolio.
The net income amount for each reportable segment is further derived by the use of expense allocations. Certain expenses not directly attributable to a specific segment are allocated across all segments based on key metrics, such as number of employees, average loan balances, and average deposit balances. These types of expenses include information technology, operations, human resources, finance, risk management, credit administration, legal, and marketing.
Income taxes are applied to each segment based on the effective tax rate for the geographic location of the segment. Any difference in the corporate tax rate and the aggregate effective tax rates in the segments are adjusted in the Corporate & Other segment.

The following is a summary of operating segment information for the periods indicated:
    Regional Segments
Balance Sheet: Consolidated Company Arizona Nevada Southern California Northern California
At September 30, 2018 (in millions)
Assets:          
Cash, cash equivalents, and investment securities $4,334.2
 $2.0
 $8.5
 $2.1
 $1.8
Loans, net of deferred loan fees and costs 16,732.8
 3,593.5
 1,936.7
 2,116.3
 1,332.3
Less: allowance for credit losses (150.0) (33.1) (18.6) (20.2) (11.3)
Total loans 16,582.8
 3,560.4
 1,918.1
 2,096.1
 1,321.0
Other assets acquired through foreclosure, net 20.0
 1.7
 14.1
 
 
Goodwill and other intangible assets, net 299.5
 
 23.2
 
 155.8
Other assets 939.6
 46.3
 58.0
 15.1
 18.8
Total assets $22,176.1
 $3,610.4
 $2,021.9
 $2,113.3
 $1,497.4
Liabilities:          
Deposits $18,908.6
 $5,331.7
 $3,847.3
 $2,550.7
 $1,951.5
Borrowings and qualifying debt 359.1
 
 
 
 
Other liabilities 420.0
 13.5
 16.3
 1.9
 12.3
Total liabilities 19,687.7
 5,345.2
 3,863.6
 2,552.6
 1,963.8
Allocated equity: 2,488.4
 439.8
 270.7
 242.4
 308.7
Total liabilities and stockholders' equity $22,176.1
 $5,785.0
 $4,134.3
 $2,795.0
 $2,272.5
Excess funds provided (used) 
 2,174.6
 2,112.4
 681.7
 775.1
Income Statement:          
Three Months Ended September 30, 2018 (in thousands)
Net interest income $234,038
 $56,701
 $37,933
 $29,572
 $23,825
Provision for (recovery of) credit losses 6,000
 (297) (38) 1,467
 482
Net interest income after provision for credit losses 228,038
 56,998
 37,971
 28,105
 23,343
Non-interest income 4,418
 2,230
 2,573
 931
 2,312
Non-interest expense (113,841) (23,231) (16,471) (14,332) (13,207)
Income (loss) before income taxes 118,615
 35,997
 24,073
 14,704
 12,448
Income tax expense (benefit) 7,492
 8,999
 5,055
 4,117
 3,486
Net income $111,123
 $26,998
 $19,018
 $10,587
 $8,962
    Regional Segments
Balance Sheet: Consolidated Company Arizona Nevada Southern California Northern California
At March 31, 2019 (in millions)
Assets:          
Cash, cash equivalents, and investment securities $4,525.0
 $2.3
 $9.1
 $2.0
 $1.9
Loans, net of deferred loan fees and costs 18,116.7
 3,653.9
 2,069.4
 2,249.8
 1,197.2
Less: allowance for credit losses (155.0) (31.9) (18.3) (20.1) (9.4)
Total loans 17,961.7
 3,622.0
 2,051.1
 2,229.7
 1,187.8
Other assets acquired through foreclosure, net 17.7
 0.7
 13.9
 
 
Goodwill and other intangible assets, net 298.8
 
 23.2
 
 155.3
Other assets 989.6
 47.6
 58.4
 15.2
 24.3
Total assets $23,792.8
 $3,672.6
 $2,155.7
 $2,246.9
 $1,369.3
Liabilities:          
Deposits $20,208.7
 $5,319.9
 $4,006.8
 $2,793.8
 $2,008.7
Borrowings and qualifying debt 374.0
 
 
 
 
Other liabilities 489.5
 11.6
 12.0
 0.5
 13.4
Total liabilities 21,072.2
 5,331.5
 4,018.8
 2,794.3
 2,022.1
Allocated equity: 2,720.6
 447.7
 283.1
 260.5
 298.9
Total liabilities and stockholders' equity $23,792.8
 $5,779.2
 $4,301.9
 $3,054.8
 $2,321.0
Excess funds provided (used) 
 2,106.6
 2,146.2
 807.9
 951.7
Nine Months Ended September 30, 2018 (in thousands)
Income Statement:          
Three Months Ended March 31, 2019 (in thousands)
Net interest income $672,366
 $169,233
 $109,898
 $85,038
 $69,081
 $247,336
 $55,226
 $39,096
 $30,477
 $23,033
Provision for (recovery of) credit losses 17,000
 1,655
 (2,005) 1,921
 2,043
 3,500
 161
 533
 733
 (719)
Net interest income after provision for credit losses 655,366
 167,578
 111,903
 83,117
 67,038
 243,836
 55,065
 38,563
 29,744
 23,752
Non-interest income 29,505
 5,902
 8,585
 2,898
 7,281
 15,410
 1,521
 2,573
 1,001
 2,220
Non-interest expense (314,538) (67,154) (46,486) (42,470) (39,139) (112,914) (22,248) (15,781) (14,583) (13,490)
Income (loss) before income taxes 370,333
 106,326
 74,002
 43,545
 35,180
 146,332
 34,338
 25,355
 16,162
 12,482
Income tax expense (benefit) 53,631
 26,644
 15,634
 12,288
 9,938
 25,536
 8,584
 5,325
 4,525
 3,495
Net income $316,702
 $79,682
 $58,368
 $31,257
 $25,242
 $120,796
 $25,754
 $20,030
 $11,637
 $8,987

 National Business Lines   National Business Lines  
Balance Sheet: HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
At September 30, 2018            
At March 31, 2019            
Assets: (in millions) (in millions)
Cash, cash equivalents, and investment securities $
 $
 $
 $
 $
 $4,319.8
 $
 $
 $
 $
 $
 $4,509.7
Loans, net of deferred loan fees and costs 202.1
 1,520.2
 1,106.5
 1,435.4
 3,483.2
 6.6
 209.4
 1,561.7
 1,057.3
 1,564.9
 4,549.0
 4.1
Less: allowance for credit losses (1.9) (14.4) (9.9) (7.3) (33.2) (0.1) (1.9) (14.8) (8.4) (9.5) (40.7) 
Total loans 200.2
 1,505.8
 1,096.6
 1,428.1
 3,450.0
 6.5
 207.5
 1,546.9
 1,048.9
 1,555.4
 4,508.3
 4.1
Other assets acquired through foreclosure, net 
 
 
 
 
 4.2
 
 
 
 
 
 3.1
Goodwill and other intangible assets, net 
 
 120.4
 0.1
 
 
 
 
 120.2
 0.1
 
 
Other assets 1.0
 19.2
 5.4
 6.8
 23.8
 745.2
 0.9
 12.5
 6.4
 7.7
 58.8
 757.8
Total assets $201.2
 $1,525.0
 $1,222.4
 $1,435.0
 $3,473.8
 $5,075.7
 $208.4
 $1,559.4
 $1,175.5
 $1,563.2
 $4,567.1
 $5,274.7
Liabilities:                        
Deposits $2,523.9
 $
 $2,319.5
 $
 $
 $384.0
 $2,963.0
 $
 $2,404.7
 $
 $5.3
 $706.5
Borrowings and qualifying debt 
 
 
 
 
 359.1
 
 
 
 
 
 374.0
Other liabilities 1.7
 10.1
 0.1
 (0.1) 85.4
 278.8
 2.0
 34.0
 
 (0.3) 60.9
 355.4
Total liabilities 2,525.6
 10.1
 2,319.6
 (0.1) 85.4
 1,021.9
 2,965.0
 34.0
 2,404.7
 (0.3) 66.2
 1,435.9
Allocated equity: 68.5
 121.4
 256.5
 119.1
 286.0
 375.3
 77.7
 126.0
 253.3
 130.3
 374.3
 468.8
Total liabilities and stockholders' equity $2,594.1
 $131.5
 $2,576.1
 $119.0
 $371.4
 $1,397.2
 $3,042.7
 $160.0
 $2,658.0
 $130.0
 $440.5
 $1,904.7
Excess funds provided (used) 2,392.9
 (1,393.5) 1,353.7
 (1,316.0) (3,102.4) (3,678.5) 2,834.3
 (1,399.4) 1,482.5
 (1,433.2) (4,126.6) (3,370.0)
Income Statement:            
Three Months Ended September 30, 2018 (in thousands)
Net interest income $17,930
 $3,683
 $27,233
 $13,557
 $20,329
 $3,275
Provision for (recovery of) credit losses 103
 (553) 1,448
 223
 3,214
 (49)
Net interest income after provision for credit losses 17,827
 4,236
 25,785
 13,334
 17,115
 3,324
Non-interest income 215
 159
 2,836
 
 549
 (7,387)
Non-interest expense (8,254) (2,134) (9,933) (3,014) (7,280) (15,985)
Income (loss) before income taxes 9,788
 2,261
 18,688
 10,320
 10,384
 (20,048)
Income tax expense (benefit) 2,251
 521
 4,298
 2,374
 2,388
 (25,997)
Net income $7,537
 $1,740
 $14,390
 $7,946
 $7,996
 $5,949
Nine Months Ended September 30, 2018 (in thousands)
Income Statement:            
Three Months Ended March 31, 2019 (in thousands)
Net interest income $49,335
 $11,224
 $74,615
 $41,617
 $58,813
 $3,512
 $20,641
 $3,423
 $29,403
 $12,944
 $25,691
 $7,402
Provision for (recovery of) credit losses 285
 (786) 5,355
 2,006
 6,573
 (47) (27) (41) (917) 799
 2,978
 
Net interest income after provision for credit losses 49,050
 12,010
 69,260
 39,611
 52,240
 3,559
 20,668
 3,464
 30,320
 12,145
 22,713
 7,402
Non-interest income 543
 159
 9,518
 12
 1,182
 (6,575) 96
 
 3,362
 
 657
 3,980
Non-interest expense (24,090) (6,386) (29,666) (7,419) (19,193) (32,535) (8,460) (1,907) (11,889) (2,398) (9,336) (12,822)
Income (loss) before income taxes 25,503
 5,783
 49,112
 32,204
 34,229
 (35,551) 12,304
 1,557
 21,793
 9,747
 14,034
 (1,440)
Income tax expense (benefit) 5,866
 1,329
 11,296
 7,407
 7,873
 (44,644) 2,830
 358
 5,012
 2,242
 3,228
 (10,063)
Net income $19,637
 $4,454
 $37,816
 $24,797
 $26,356
 $9,093
 $9,474
 $1,199
 $16,781
 $7,505
 $10,806
 $8,623






   Regional Segments   Regional Segments

 Consolidated Company Arizona Nevada Southern California Northern California Consolidated Company Arizona Nevada Southern California Northern California
At December 31, 2017 (in millions)
At December 31, 2018 (in millions)
Assets:                    
Cash, cash equivalents, and investment securities $4,237.1
 $2.1
 $8.2
 $2.1
 $1.7
 $4,259.7
 $2.5
 $10.9
 $2.5
 $3.0
Loans, net of deferred loan fees and costs 15,093.9
 3,323.7
 1,844.8
 1,934.7
 1,275.5
 17,710.6
 3,647.9
 2,003.5
 2,161.1
 1,300.2
Less: allowance for credit losses (140.0) (31.5) (18.1) (19.5) (13.2) (152.7) (30.7) (18.7) (19.8) (10.7)
Total loans 14,953.9
 3,292.2
 1,826.7
 1,915.2
 1,262.3
 17,557.9
 3,617.2
 1,984.8
 2,141.3
 1,289.5
Other assets acquired through foreclosure, net 28.5
 2.3
 13.3
 
 0.2
 17.9
 0.8
 13.9
 
 
Goodwill and other intangible assets, net 300.7
 
 23.2
 
 156.5
 299.2
 
 23.2
 
 155.5
Other assets 808.9
 46.3
 58.8
 14.4
 15.1
 974.8
 46.9
 57.8
 14.2
 23.9
Total assets $20,329.1
 $3,342.9
 $1,930.2
 $1,931.7
 $1,435.8
 $23,109.5
 $3,667.4
 $2,090.6
 $2,158.0
 $1,471.9
Liabilities:                    
Deposits $16,972.5
 $4,841.3
 $3,951.4
 $2,461.1
 $1,681.7
 $19,177.4
 $5,090.2
 $3,996.4
 $2,347.5
 $1,839.1
Borrowings and qualifying debt 766.9
 
 
 
 
 851.5
 
 
 
 
Other liabilities 360.0
 11.6
 20.9
 3.2
 11.9
 466.9
 10.4
 14.5
 4.5
 12.2
Total liabilities 18,099.4
 4,852.9
 3,972.3
 2,464.3
 1,693.6
 20,495.8
 5,100.6
 4,010.9
 2,352.0
 1,851.3
Allocated equity: 2,229.7
 396.5
 263.7
 221.8
 303.1
 2,613.7
 441.0
 277.4
 242.9
 304.1
Total liabilities and stockholders' equity $20,329.1
 $5,249.4
 $4,236.0
 $2,686.1
 $1,996.7
 $23,109.5
 $5,541.6
 $4,288.3
 $2,594.9
 $2,155.4
Excess funds provided (used) 
 1,906.5
 2,305.8
 754.4
 560.9
 
 1,874.2
 2,197.7
 436.9
 683.5
Income Statement:          
Three Months Ended September 30, 2017 (in thousands)
Net interest income (expense) $201,583
 $52,637
 $36,310
 $26,811
 $21,932
Provision for (recovery of) credit losses 5,000
 (289) (2,044) (58) 3,144
Net interest income (expense) after provision for credit losses 196,583
 52,926
 38,354
 26,869
 18,788
Non-interest income 10,456
 1,265
 2,354
 971
 1,796
Non-interest expense (89,296) (18,844) (14,748) (12,340) (11,317)
Income (loss) before income taxes 117,743
 35,347
 25,960
 15,500
 9,267
Income tax expense (benefit) 34,899
 13,857
 9,086
 6,517
 3,897
Net income $82,844
 $21,490
 $16,874
 $8,983
 $5,370
Nine Months Ended September 30, 2017 (in thousands)
Income Statement:          
Three Months Ended March 31, 2018 (in thousands)
Net interest income (expense) $573,635
 $145,839
 $108,028
 $81,087
 $63,686
 $214,220
 $54,555
 $36,690
 $27,802
 $22,255
Provision for (recovery of) credit losses 12,250
 109
 (5,378) (20) 4,238
 6,000
 1,434
 (1,723) 729
 1,548
Net interest income (expense) after provision for credit losses 561,385
 145,730
 113,406
 81,107
 59,448
 208,220
 53,121
 38,413
 27,073
 20,707
Non-interest income 31,656
 3,567
 6,800
 2,602
 5,839
 11,643
 1,416
 3,333
 1,001
 2,547
Non-interest expense (265,543) (55,388) (45,733) (38,063) (36,188) (98,149) (21,504) (14,084) (13,646) (12,503)
Income (loss) before income taxes 327,498
 93,909
 74,473
 45,646
 29,099
 121,714
 33,033
 27,662
 14,428
 10,751
Income tax expense (benefit) 91,352
 36,831
 26,066
 19,194
 12,236
 20,814
 8,321
 5,903
 4,135
 3,098
Net income $236,146
 $57,078
 $48,407
 $26,452
 $16,863
 $100,900
 $24,712
 $21,759
 $10,293
 $7,653





 National Business Lines   National Business Lines  

 HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
At December 31, 2017            
At December 31, 2018            
Assets: (in millions) (in millions)
Cash, cash equivalents, and investment securities $
 $
 $
 $
 $
 $4,223.0
 $
 $
 $
 $
 $
 $4,240.8
Loans, net of deferred loan fees and costs 162.1
 1,580.4
 1,097.9
 1,327.7
 2,543.0
 4.1
 210.0
 1,547.5
 1,200.9
 1,479.9
 4,154.9
 4.7
Less: allowance for credit losses (1.6) (15.6) (11.4) (4.0) (25.0) (0.1) (1.9) (14.2) (10.0) (8.5) (38.2) 
Total loans 160.5
 1,564.8
 1,086.5
 1,323.7
 2,518.0
 4.0
 208.1
 1,533.3
 1,190.9
 1,471.4
 4,116.7
 4.7
Other assets acquired through foreclosure, net 
 
 
 
 
 12.7
 
 
 
 
 
 3.2
Goodwill and other intangible assets, net 
 
 120.9
 0.1
 
 
 
 
 120.4
 0.1
 
 
Other assets 0.9
 17.9
 6.0
 5.9
 15.5
 628.1
 0.9
 20.1
 6.3
 7.2
 37.1
 760.4
Total assets $161.4
 $1,582.7
 $1,213.4
 $1,329.7
 $2,533.5
 $4,867.8
 $209.0
 $1,553.4
 $1,317.6
 $1,478.7
 $4,153.8
 $5,009.1
Liabilities:                        
Deposits $2,230.4
 $
 $1,737.6
 $
 $
 $69.0
 $2,607.2
 $
 $2,559.0
 $
 $
 $738.0
Borrowings and qualifying debt 
 
 
 
 
 766.9
 
 
 
 
 
 851.5
Other liabilities 1.2
 42.4
 0.8
 0.4
 5.5
 262.1
 2.1
 25.2
 0.1
 0.4
 49.6
 347.9
Total liabilities 2,231.6
 42.4
 1,738.4
 0.4
 5.5
 1,098.0
 2,609.3
 25.2
 2,559.1
 0.4
 49.6
 1,937.4
Allocated equity: 59.4
 126.5
 244.1
 108.3
 206.0
 300.3
 70.7
 123.9
 268.7
 122.3
 340.0
 422.7
Total liabilities and stockholders' equity $2,291.0
 $168.9
 $1,982.5
 $108.7
 $211.5
 $1,398.3
 $2,680.0
 $149.1
 $2,827.8
 $122.7
 $389.6
 $2,360.1
Excess funds provided (used) 2,129.6
 (1,413.8) 769.1
 (1,221.0) (2,322.0) (3,469.5) 2,471.0
 (1,404.3) 1,510.2
 (1,356.0) (3,764.2) (2,649.0)
Income Statement:            
Three Months Ended September 30, 2017 (in thousands)
Net interest income (expense) $13,746
 $7,269
 $20,415
 $15,346
 $16,933
 $(9,816)
Provision for (recovery of) credit losses 40
 91
 (83) 1,116
 4,416
 (1,333)
Net interest income (expense) after provision for credit losses 13,706
 7,178
 20,498
 14,230
 12,517
 (8,483)
Non-interest income 136
 183
 1,855
 
 379
 1,517
Non-interest expense (7,011) (2,053) (8,824) (1,905) (5,286) (6,968)
Income (loss) before income taxes 6,831
 5,308
 13,529
 12,325
 7,610
 (13,934)
Income tax expense (benefit) 2,562
 1,028
 5,075
 4,622
 2,853
 (14,598)
Net income $4,269
 $4,280
 $8,454
 $7,703
 $4,757
 $664
Nine Months Ended September 30, 2017 (in thousands)
Income Statement:            
Three Months Ended March 31, 2018 (in thousands)
Net interest income (expense) $40,275
 $21,242
 $59,610
 $42,337
 $46,380
 $(34,849) $15,359
 $3,746
 $22,821
 $14,185
 $18,811
 $(2,004)
Provision for (recovery of) credit losses 332
 796
 816
 2,924
 10,265
 (1,832) 47
 (207) 1,651
 1,236
 1,285
 
Net interest income (expense) after provision for credit losses 39,943
 20,446
 58,794
 39,413
 36,115
 (33,017) 15,312
 3,953
 21,170
 12,949
 17,526
 (2,004)
Non-interest income 417
 415
 5,689
 
 1,632
 4,695
 150
 
 3,051
 13
 224
 (92)
Non-interest expense (21,416) (6,522) (26,685) (7,949) (14,573) (13,026) (7,803) (2,174) (9,833) (2,206) (5,662) (8,734)
Income (loss) before income taxes 18,944
 14,339
 37,798
 31,464
 23,174
 (41,348) 7,659
 1,779
 14,388
 10,756
 12,088
 (10,830)
Income tax expense (benefit) 7,104
 4,424
 14,175
 11,799
 8,690
 (49,167) 1,761
 409
 3,309
 2,474
 2,780
 (11,376)
Net income $11,840
 $9,915
 $23,623
 $19,665
 $14,484
 $7,819
 $5,898
 $1,370
 $11,079
 $8,282
 $9,308
 $546

15.16. REVENUE FROM CONTRACTS WITH CUSTOMERS
Adoption of ASU 2014-09, Revenue from Contracts with Customers, Amendments to ASC 606
The core principal of ASC 606, Revenue from Contracts with Customers, is that an entity shall recognizerequires revenue to be recognized at an amount that reflects the consideration to which the entity expects to be entitled in exchange for transferring goods or services to a customer. ASC 606 requires entities to exercise more judgment when considering the terms of a contract than under ASC 605, Revenue Recognition. ASC 606 applies to all contracts with customers to provide goods or services in the ordinary course of business, except for contracts that are specifically excluded from its scope. The majority of the Company’s revenue streams including interest income, credit and debit card fees, income from equity investments including warrants and SBIC equity income, income from bank owned life insurance, foreign currency income, lending related income, and gains and losses on sales of investment securities are outside the scope of ASC 606. Revenue streams including service charges and fees, interchange fees on credit and debit cards, and success fees are within the scope of ASC 606.
On January 1, 2018, the Company adopted the amendments to ASC 606 using the modified retrospective method, and applied the guidance to all contracts in scope that were not completed as of January 1, 2018. Comparative prior periods have not been adjusted and are presented under ASC 605. The Company did not identify any material changes to the timing or amount of revenue recognition as a result of adoption.
Disaggregation of Revenue
The following table represents a disaggregation of revenue from contracts with customers for the periods indicated along with the reportable segment for each revenue category:
   Regional Segments   Regional Segments
Three Months Ended September 30, 2018 Consolidated Company Arizona Nevada Southern California Northern California
 (in thousands) Consolidated Company Arizona Nevada Southern California Northern California
Three Months Ended March 31, 2019 (in thousands)
Revenue from contracts with customers:                    
Service charges and fees $5,267
 $917
 $1,967
 $634
 $905
 $5,412
 $1,079
 $1,915
 $726
 $890
Debit and credit card interchange (1) 1,834
 284
 381
 171
 992
 1,865
 337
 376
 173
 971
Success fees (2) 675
 
 
 
 
 435
 
 
 
 
Other income 84
 29
 34
 7
 18
 119
 9
 23
 9
 26
Total revenue from contracts with customers $7,860
 $1,230
 $2,382
 $812
 $1,915
 $7,831
 $1,425
 $2,314
 $908
 $1,887
Revenues outside the scope of ASC 606 (3) (3,442) 1,000
 191
 119
 397
 7,579
 96
 259
 93
 333
Total non-interest income $4,418
 $2,230
 $2,573
 $931
 $2,312
 $15,410
 $1,521
 $2,573
 $1,001
 $2,220
   Regional Segments National Business Lines  
Nine Months Ended September 30, 2018 Consolidated Company Arizona Nevada Southern California Northern California
 (in thousands) HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
Three Months Ended March 31, 2019 (in thousands)
Revenue from contracts with customers:                      
Service charges and fees $16,684
 $2,826
 $6,143
 $2,053
 $2,945
 $88
 $
 $713
 $
 $1
 $
Debit and credit card interchange (1) 4,990
 822
 995
 471
 2,687
 8
 
 
 
 
 
Success fees (2) 2,370
 
 
 
 21
 
 
 435
 
 
 
Other income 497
 139
 153
 51
 134
 
 
 
 
 38
 14
Total revenue from contracts with customers $24,541
 $3,787
 $7,291
 $2,575
 $5,787
 $96
 $
 $1,148
 $
 $39
 $14
Revenues outside the scope of ASC 606 (3) 4,964
 2,115
 1,294
 323
 1,494
 
 
 2,214
 
 618
 3,966
Total non-interest income $29,505
 $5,902
 $8,585
 $2,898
 $7,281
 $96
 $
 $3,362
 $
 $657
 $3,980

    Regional Segments
  Consolidated Company Arizona Nevada Southern California Northern California
Three Months Ended March 31, 2018 (in thousands)
Revenue from contracts with customers:          
Service charges and fees $5,745
 $917
 $2,069
 $738
 $1,059
Debit and credit card interchange (1) 1,508
 257
 272
 139
 837
Success fees (2) 781
 
 
 
 2
Other income 235
 61
 69
 27
 73
Total revenue from contracts with customers $8,269
 $1,235
 $2,410
 $904
 $1,971
Revenues outside the scope of ASC 606 (3) 3,374
 181
 923
 97
 576
Total non-interest income $11,643
 $1,416
 $3,333
 $1,001
 $2,547

  National Business Lines  
Three Months Ended September 30, 2018 HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
  (in thousands)
Revenue from contracts with customers:            
Service charges and fees $208
 $
 $643
 $
 $
 $(7)
Debit and credit card interchange (1) 6
 
 
 
 
 
Success fees (2) 
 
 675
 
 
 
Other income 1
 
 
 
 
 (5)
Total revenue from contracts with customers $215
 $
 $1,318
 $
 $
 $(12)
Revenues outside the scope of ASC 606 (3) 
 159
 1,518
 
 549
 (7,375)
Total non-interest income $215
 $159
 $2,836
 $
 $549
 $(7,387)
  National Business Lines  
Nine Months Ended September 30, 2018 HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
  (in thousands)
Revenue from contracts with customers:            
Service charges and fees $525
 $
 $2,197
 $
 $
 $(5)
Debit and credit card interchange (1) 15
 
 
 
 
 
Success fees (2) 
 
 2,349
 
 
 
Other income 3
 
 
 
 1
 16
Total revenue from contracts with customers $543
 $
 $4,546
 $
 $1
 $11
Revenues outside the scope of ASC 606 (3) 
 159
 4,972
 12
 1,181
 (6,586)
Total non-interest income $543
 $159
 $9,518
 $12
 $1,182
 $(6,575)
    Regional Segments
Three Months Ended September 30, 2017 Consolidated Company Arizona Nevada Southern California Northern California
  (in thousands)
Revenue from contracts with customers:          
Service charges and fees $5,248
 $765
 $1,952
 $628
 $1,011
Debit and credit card interchange (1) 1,250
 232
 246
 138
 634
Success fees (2) 701
 
 
 
 102
Other income 127
 61
 (4) 32
 34
Total revenue from contracts with customers $7,326
 $1,058
 $2,194
 $798
 $1,781
Revenues outside the scope of ASC 606 (3) 3,130
 207
 160
 173
 15
Total non-interest income $10,456
 $1,265
 $2,354
 $971
 $1,796
    Regional Segments
Nine Months Ended September 30, 2017 Consolidated Company Arizona Nevada Southern California Northern California
  (in thousands)
Revenue from contracts with customers:          
Service charges and fees $15,189
 $2,095
 $5,544
 $1,749
 $3,069
Debit and credit card interchange (1) 3,714
 661
 723
 400
 1,930
Success fees (2) 1,162
 
 
 
 247
Other income 373
 99
 (4) 43
 107
Total revenue from contracts with customers $20,438
 $2,855
 $6,263
 $2,192
 $5,353
Revenues outside the scope of ASC 606 (3) 11,218
 712
 537
 410
 486
Total non-interest income $31,656
 $3,567
 $6,800
 $2,602
 $5,839


  National Business Lines  
Three Months Ended September 30, 2017 HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
  (in thousands)
Revenue from contracts with customers:            
Service charges and fees $136
 $
 $762
 $
 $
 $(6)
Debit and credit card interchange (1) 
 
 
 
 
 
Success fees (2) 
 
 599
 
 
 
Other income 
 
 
 
 
 4
Total revenue from contracts with customers $136
 $
 $1,361
 $
 $
 $(2)
Revenues outside the scope of ASC 606 (3) 
 183
 494
 
 379
 1,519
Total non-interest income $136
 $183
 $1,855
 $
 $379
 $1,517
 National Business Lines   National Business Lines  
Nine Months Ended September 30, 2017 HOA Services Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
 (in thousands) HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
Three Months Ended March 31, 2018 (in thousands)
Revenue from contracts with customers:                        
Service charges and fees $416
 $
 $2,319
 $
 $
 $(3) $146
 $
 $815
 $
 $
 $1
Debit and credit card interchange (1) 
 
 
 
 
 
 3
 
 
 
 
 
Success fees (2) 
 
 915
 
 
 
 
 
 779
 
 
 
Other income 1
 
 3
 
 113
 11
 
 
 
 
 
 5
Total revenue from contracts with customers $417
 $
 $3,237
 $
 $113
 $8
 $149
 $
 $1,594
 $
 $
 $6
Revenues outside the scope of ASC 606 (3) 
 415
 2,452
 
 1,519
 4,687
 1
 
 1,457
 13
 224
 (98)
Total non-interest income $417
 $415
 $5,689
 $
 $1,632
 $4,695
 $150
 $
 $3,051
 $13
 $224
 $(92)
(1)Included as part of Card income in the Consolidated Income Statement.
(2)Included as part of Income from equity investments in the Consolidated Income Statement.
(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."
Performance Obligations
Many of the services the Company performs for its customers are ongoing, and either party may cancel at any time. The fees for these contracts are dependent upon various underlying factors, such as customer deposit balances, and as such may be considered variable. The Company’s performance obligations for these services are satisfied as the services are rendered and payment is collected on a monthly, quarterly, or semi-annual basis. Other contracts with customers are for services to be provided at a point in time, and fees are recognized at the time such services are rendered. The Company had no material unsatisfied performance obligations as of September 30, 2018.March 31, 2019. The revenue streams within the scope of ASC 606 are described in further detail below.
Service Charges and Fees
The Company performs deposit account services for its customers, which include analysis and treasury management services, use of safe deposit boxes, check upcharges, and other ancillary services. The depository arrangements the Company holds with its customers are considered day-to-day contracts with ongoing renewals and optional purchases, and as such, the contract duration does not extend beyond the services performed. Due to the short-term nature of such contracts, the Company generally recognizes revenue for deposit related fees as services are rendered. From time to time, the Company may waive certain fees for its customers. The Company considers historical experience when recognizing revenue from contracts with customers, and may reduce the transaction price to account for fee waivers or refunds.
Debit and Credit Card Interchange
When a credit or debit card issued by the Company is used to purchase goods or services from a merchant, the Company earns an interchange fee. The Company considers the merchant its customer in these transactions as the Company provides the merchant with the service of enabling the cardholder to purchase the merchant’s goods or services with increased convenience, and it enables the merchants to transact with a class of customer that may not have access to sufficient funds at the time of purchase. The Company acts as an agent to the payment network by providing nightly settlement services between the network and the merchant. This transmission of data and funds represents the Company’s performance obligation and is performed nightly. As the payment network

is in direct control of setting the rates and the Company is acting as an agent, the interchange fee is recorded net of expenses as the services are provided.
Success Fees
Success fees are one-time fees detailed as part of certain loan agreements and are earned immediately upon occurrence of a triggering event. Examples of triggering events include: a borrower obtaining its next round of funding, an acquisition, or completion of a public offering. Success fees are variable consideration as the transaction price can vary and is contingent on the occurrence or non-occurrence of a future event. As the consideration is highly susceptible to factors outside of the Company’s influence and uncertainty about the amount of consideration is not expected to be resolved for an extended period of time, the variable consideration is constrained and is not recognized until the achievement of the triggering event.

Principal versus Agent Considerations
When more than one party is involved in providing goods or services to a customer, ASC 606 requires the Company to determine whether it is the principal or an agent in these transactions by evaluating the nature of its promise to the customer. An entity is a principal and therefore records revenue on a gross basis, if it controls a promised good or service before transferring that good or service to the customer. An entity is an agent and records as revenue the net amount it retains for its agency services if its role is to arrange for another entity to provide the goods or services. The Company most commonly acts as a principal and records revenue on a gross basis, except in certain circumstances. As an example, revenues earned from interchange fees, in which the Company acts as an agent, are recorded as non-interest income, net of the related expenses paid to the principal.
Practical Expedients
The Company has elected to apply the practical expedient allowed in ASC 340-40-25-4, which permits the Company to immediately expense contract acquisition costs, such as commissions, when the asset that would have resulted from capitalizing these costs would be amortized in one year or less. The practical expedient described in ASC 606-10-32-18, which is associated with the determination of whether a significant financing component exists, is not currently applicable to the Company.
Contract Balances
The timing of revenue recognition may differ from the timing of cash settlements or invoicing to customers. The Company records contract liabilities, or deferred revenue, when payments from customers are received or due in advance of providing services to customers. The Company generally receives payments for its services during the period or at the time services are provided, therefore, does not have material contract liability balances at period-end. The Company records contract assets or receivables when revenue is recognized prior to receipt of cash from the customer. Accounts receivable totals $1.3$1.4 million at each of the periods ended September 30, 2018March 31, 2019 and December 31, 20172018 and are presented in Other assets in the Consolidated Balance Sheets.
16. RELATED PARTY TRANSACTIONS
Principal stockholders, directors, and executive officers of the Company, their immediate family members, and companies they control or own more than a 10% interest in, are considered to be related parties. In the ordinary course of business, the Company engages in various related party transactions, including extending credit and bank service transactions. All related party transactions are subject to review and approval pursuant to the Company's Related Party Transactions policy.
On April 1, 2017, the Company hired an executive officer who was previously the Managing Partner of an external consulting firm that the Company actively uses for risk management services. Prior to joining the Company, the executive officer sold his interest in this external consulting firm and was paid with a combination of cash and a $1.0 million note, which as of September 30, 2018, was paid in full. Donations and other services to related parties, including sponsorships and expenses to this external consulting firm, totaled $8.7 million and $2.1 million for the nine months ended September 30, 2018 and 2017, respectively. For the nine months ended September 30, 2018, total related party expenses of $8.7 million includes a donation to the Company's charitable foundation of $7.6 million, which consists of a non-cash donation of OREO property of $6.9 million and a cash donation of $0.7 million.

Item 2.Management's Discussions and Analysis of Financial Condition and Results of Operations.

This discussion is designed to provide insight into management's assessment of significant trends related to the Company's consolidated financial condition, results of operations, liquidity, capital resources, and interest rate sensitivity. This Quarterly Report on Form 10-Q should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 20172018 and the interim Unaudited Consolidated Financial Statements and Notes to Unaudited Consolidated Financial Statements hereto and financial information appearing elsewhere in this report. Unless the context requires otherwise, the terms "Company," "we," and "our" refer to Western Alliance Bancorporation and its wholly-owned subsidiaries on a consolidated basis.
Forward-Looking Information
Certain statements contained in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2018March 31, 2019 are “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Exchange Act. The Company intends such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements. All statements other than statements of historical fact are “forward-looking statements” for purposes of federal and state securities laws, including statements that are related to or are dependent on estimates or assumptions relating to expectations, beliefs, projections, future plans and strategies, anticipated events or trends, and similar expressions concerning matters that are not historical facts.
The forward-looking statements contained in this Form 10-Q reflect the Company's current views about future events and financial performance and involve certain risks, uncertainties, assumptions, and changes in circumstances that may cause the Company's actual results to differ significantly from historical results and those expressed in any forward-looking statement, including those risks discussed under the heading “Risk Factors” in this Form 10-Q. Risks and uncertainties include those set forth in the Company's filings with the SEC and the following factors that could cause actual results to differ materially from those presented: 1) financial market and economic conditions adversely effecting financial performance; 2) dependency on real estate and events that negatively impact the real estate market; 3) high concentration of commercial real estate and commercial and industrial loans; 4) actual credit losses may exceed expected losses in the loan portfolio; 5) recent changes to FASB accounting standards and the impact on the recognition of credit losses; 6) results of any tax audit findings, challenges to the Company's tax positions, or adverse changes or interpretations of tax laws; 7) the geographic concentrations of the Company's assets increase the risks related to local economic conditions; 8) exposure of financial instruments to certain market risks may increase the volatility of earnings and AOCI; 9) dependence on low-cost deposits; 10) ability to borrow from the FHLB or the FRB; 11) perpetration of fraud; 12) information security breaches; 13) reliance on third parties to provide key components of the Company's infrastructure; 14) a change in the Company's creditworthiness; 15) the Company's ability to implement and improve its controls and processes to keep pace with its growth; 16) expansion strategies may not be successful; 17) risks associated with new lines of businesses or new products and services within existing lines of business; 18) the Company's ability to compete in a highly competitive market; 19) the Company's ability to recruit and retain qualified employees and implement adequate succession planning to mitigate the loss of key members of its senior management team; 20) inadequate or ineffective risk management practices and internal controls and procedures; 21) the Company's ability to adapt to technological change; 22) exposure to natural and manmade disasters in markets that the Company operates; 23) risk of operating in a highly regulated industry and the Company's ability to remain in compliance; 24) failure to comply with state and federal banking agency laws and regulations; 25) uncertainty about the future of LIBOR, changes in interest rates, and increased rate competition; 26) exposure to environmental liabilities related to the properties to which the Company acquires title; and 27) risks related to ownership and price of the Company's common stock.
For more information regarding risks that may cause the Company's actual results to differ materially from any forward-looking statements, see “Risk Factors” in Item 1A of the Company's Annual Report on Form 10-K for the year ended December 31, 2017.2018.
Financial Overview and Highlights
WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of deposit, lending, treasury management, international banking, and online banking products and services through its wholly-owned banking subsidiary, WAB.
WAB operates the following full-service banking divisions: ABA, BON and FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services.

Financial Results Highlights for the ThirdFirst Quarter of 20182019
Effective for the first quarter 2019, annualized performance metrics are calculated on an actual/actual basis, from a previous 30/360 basis as management believes that this change results in quarterly results that are more comparable. Prior period amounts have been restated to conform to the current presentation.
Net income of $111.1$120.8 million, compared to $82.8$100.9 million for the thirdfirst quarter 20172018
Diluted earnings per share of $1.05,$1.16, compared to $0.79$0.96 per share for the thirdfirst quarter 20172018
Total loans of $16.73$18.12 billion, up $0.59 billion from June 30, 2018, and $1.64 billion$406.1 million from December 31, 2017
2018
Total deposits of $18.91$20.21 billion, up $0.82 billion from June 30, 2018, and $1.94$1.03 billion from December 31, 20172018
Net interest margin of 4.72%4.71%, compared to 4.65%4.66% in the thirdfirst quarter 20172018
Net operating revenue of $246.9$259.9 million, constituting year-over-year growthan increase of 16.6%14.5%, or $35.2$33.0 million, compared to the first quarter 2018, and an increase in operating non-interest expenses of 18.0%13.5%, or $16.0$13.4 million, forcompared to the thirdfirst quarter 201720181 
Operating PPNR of $141.9$147.1 million, up 15.6%15.3% from $122.7$127.6 million in the thirdfirst quarter 201720181 
Efficiency ratio of 46.6%42.0% in the thirdfirst quarter 2018,2019, compared to 40.1%42.4% in the thirdfirst quarter 20172018
Operating efficiency ratio of 41.5%42.4% in the thirdfirst quarter 2018,2019, compared to 40.0%42.7% in the thirdfirst quarter 201720181
Nonperforming assets (nonaccrual loans and repossessed assets) decreasedincreased to 0.26% of total assets, from 0.42%0.20% at September 30, 2017December 31, 2018
Annualized net loan charge-offs to average loans outstanding of 0.08%0.03%, compared to 0.01%0.04% for the thirdfirst quarter 20172018
Tangible common equity ratio of 10.0%10.3%, compared to 9.4%9.8% at September 30, 2017March 31, 20181
Stockholders' equity of $2.49$2.72 billion, an increase of $96.7 million from June 30, 2018, and $258.7$106.9 million from December 31, 2017
2018
Book value per common share of $23.51,$26.04, an increase of 15.6%20.2% from $20.34$21.67 at September 30, 2017March 31, 2018
Tangible book value per share, net of tax, of $20.70,$23.20, an increase of 18.1%$4.34 from $17.53$18.86 at September 30, 2017March 31, 20181
The impact to the Company from these items, and others of both a positive and negative nature, are discussed in more detail below as they pertain to the Company’s overall comparative performance for the three and nine months ended September 30, 2018.March 31, 2019.

1 See Non-GAAP Financial Measures section beginning on page 68.62.




As a bank holding company, management focuses on key ratios in evaluating the Company's financial condition and results of operations.
Results of Operations and Financial Condition
A summary of the Company's results of operations, financial condition, and selected metrics are included in the following tables: 
 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
 (in thousands, except per share amounts) (in thousands, except per share amounts)
Net income $111,123
 $82,844
 $316,702
 $236,146
 $120,796
 $100,900
Earnings per share - basic 1.06
 0.79
 3.03
 2.27
 1.16
 0.97
Earnings per share - diluted 1.05
 0.79
 3.00
 2.25
 1.16
 0.96
Return on average assets 2.07% 1.71% 2.02% 1.70% 2.12% 2.02%
Return on average tangible common equity (1) 20.57
 18.18
 20.47
 18.15
 20.49
 20.74
Net interest margin 4.72
 4.65
 4.67
 4.63
 4.71
 4.66
(1)See Non-GAAP Financial Measures section beginning on page 68.62.
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Total assets $22,176,147
 $20,329,085
 $23,792,846
 $23,109,486
Total loans, net of deferred loan fees and costs 16,732,765
 15,093,935
 18,116,748
 17,710,629
Total deposits 18,908,580
 16,972,532
 20,208,740
 19,177,447
Asset Quality
For all banks and bank holding companies, asset quality plays a significant role in the overall financial condition of the institution and results of operations. The Company measures asset quality in terms of non-accrual loans as a percentage of gross loans and net charge-offs as a percentage of average loans. Net charge-offs are calculated as the difference between charged-off loans and recovery payments received on previously charged-off loans. The following table summarizes the Company's key asset quality metrics: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (dollars in thousands)
Non-accrual loans $36,868
 $43,925
 $43,887
 $27,746
Non-performing assets 99,463
 114,939
 114,082
 82,722
Non-accrual loans to gross loans 0.22% 0.29% 0.24% 0.16%
Net charge-offs to average loans outstanding (1) 0.08
 0.01
 0.03
 0.06
(1)Annualized on an actual/actual basis for the three months ended September 30, 2018.March 31, 2019. Actual year-to-date for the year ended December 31, 2017.2018.
Asset and Deposit Growth
The Company’s assets and liabilities are comprised primarily of loans and deposits. Therefore, the ability to originate new loans and attract new deposits is fundamental to the Company’s growth.
Total assets increased to $22.18$23.79 billion at September 30, 2018March 31, 2019 from $20.33$23.11 billion at December 31, 2017.2018. The increase in total assets of $1.85 billion,$683.4 million, or 9.1%3.0%, relates primarily to loan growth of $1.64 billion.growth. Total loans increased by $1.64 billion,$406.1 million, or 10.9%2.3%, to $16.73$18.12 billion as of September 30, 2018,March 31, 2019, compared to $15.09$17.71 billion as of December 31, 2017.2018. The increase in loans from December 31, 20172018 was driven by increases in commercial and industrialresidential real estate loans of $646.3$257.2 million, construction and land development loans of $475.4$148.8 million, and residential real estateCRE non-owner occupied loans of $401.1$90.8 million. These increases were partially offset by decreases in CRE owner-occupied loans of $40.0 million and commercial and industrial loans of $38.9 million. Total deposits increased $1.94$1.03 billion, or 11.4%5.4%, to $18.91$20.21 billion as of September 30, 2018March 31, 2019 from $16.97$19.18 billion as of December 31, 2017.2018.

RESULTS OF OPERATIONS
The following table sets forth a summary financial overview for the comparable periods:
 Three Months Ended September 30, Increase Nine Months Ended September 30, Increase Three Months Ended March 31, Increase
 2018 2017 (Decrease) 2018 2017 (Decrease) 2019 2018 (Decrease)
 (in thousands, except per share amounts) (in thousands, except per share amounts)
Consolidated Income Statement Data:Consolidated Income Statement Data:    Consolidated Income Statement Data:
Interest income $265,216
 $217,836
 $47,380
 $751,515
 $617,054
 $134,461
 $291,168
 $234,697
 $56,471
Interest expense 31,178
 16,253
 14,925
 79,149
 43,419
 35,730
 43,832
 20,477
 23,355
Net interest income 234,038
 201,583
 32,455
 672,366
 573,635
 98,731
 247,336
 214,220
 33,116
Provision for credit losses 6,000
 5,000
 1,000
 17,000
 12,250
 4,750
 3,500
 6,000
 (2,500)
Net interest income after provision for credit losses 228,038
 196,583
 31,455
 655,366
 561,385
 93,981
 243,836
 208,220
 35,616
Non-interest income 4,418
 10,456
 (6,038) 29,505
 31,656
 (2,151) 15,410
 11,643
 3,767
Non-interest expense 113,841
 89,296
 24,545
 314,538
 265,543
 48,995
 112,914
 98,149
 14,765
Income before provision for income taxes 118,615
 117,743
 872
 370,333
 327,498
 42,835
 146,332
 121,714
 24,618
Income tax expense 7,492
 34,899
 (27,407) 53,631
 91,352
 (37,721) 25,536
 20,814
 4,722
Net income $111,123
 $82,844
 $28,279
 $316,702
 $236,146
 $80,556
 $120,796
 $100,900
 $19,896
Earnings per share - basic $1.06
 $0.79
 $0.27
 $3.03
 $2.27
 $0.76
 $1.16
 $0.97
 $0.19
Earnings per share - diluted $1.05
 $0.79
 $0.26
 $3.00
 $2.25
 $0.75
 $1.16
 $0.96
 $0.20
Non-GAAP Financial Measures
The following discussion and analysis contains financial information determined by methods other than those prescribed by GAAP. The Company's management uses these non-GAAP financial measures in their analysis of the Company's performance. These measurements typically adjust GAAP performance measures to exclude the effects of certain significant activities or transactions that, in management's opinion, do not reflect recurring period-to-period comparisons of the Company's performance. Management believes presentation of these non-GAAP financial measures provides useful supplemental information that is essential to a complete understanding of the operating results of the Company's core businesses. Since the presentation of these non-GAAP performance measures and their impact differ between companies, these non-GAAP disclosures should not be viewed as a substitute for operating results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies.
Operating Pre-Provision Net Revenue
Operating PPNR is defined by the Federal Reserve in SR 14-3, which requires companies subject to the rule to project PPNR over the planning horizon for each of the economic scenarios defined annually by the regulators. Banking regulations define PPNR as net interest income plus non-interest income less non-interest expense. Management has further adjusted this metric to exclude any non-recurring or non-operational elements of non-interest income or non-interest expense, which are outlined in the table below. Management feelsbelieves that this is an important metric as it illustrates the underlying performance of the Company, it enables investors and others to assess the Company's ability to generate capital to cover credit losses through the credit cycle, and provides consistent reporting with a key metric used by bank regulatory agencies.

The following table shows the components of operating PPNR for the three and nine months ended September 30, 2018March 31, 2019 and 2017:2018:
 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
 (in thousands) (in thousands)
Total non-interest income $4,418
 $10,456
 $29,505
 $31,656
 $15,410
 $11,643
Less:            
(Loss) gain on sales of investment securities, net (1) (7,232) 319
 (7,232) 907
Unrealized (losses) gains on assets measured at fair value, net (1) (1,212) 
 (2,971) (1)
Unrealized gains (losses) on assets measured at fair value, net (1) 2,834
 (1,074)
Total operating non-interest income 12,862
 10,137
 39,708
 30,750
 12,576
 12,717
Plus: net interest income 234,038
 201,583
 672,366
 573,635
 247,336
 214,220
Net operating revenue $246,900
 $211,720
 $712,074
 $604,385
 $259,912
 $226,937
Total non-interest expense $113,841
 $89,296
 $314,538
 $265,543
 $112,914
 $98,149
Less:            
Contribution to charitable foundation (2) 7,645
 
 7,645
 
401(k) plan change and other miscellaneous items (2) 1,218
 
 1,218
 
Net (gain) loss on sales / valuations of repossessed and other assets (1) (67) 266
 (1,474) (46)
Net loss (gain) on sales / valuations of repossessed and other assets (1) 97
 (1,228)
Total operating non-interest expense $105,045
 $89,030
 $307,149
 $265,589
 $112,817
 $99,377
Operating pre-provision net revenue $141,855
 $122,690
 $404,925
 $338,796
Operating pre-provision net revenue (2) $147,095
 $127,560
Plus:            
Non-operating revenue adjustments (8,444) 319
 (10,203) 906
Revenue adjustments 2,834
 (1,074)
Less:            
Provision for credit losses 6,000
 5,000
 17,000
 12,250
 3,500
 6,000
Non-operating expense adjustments 8,796
 266
 7,389
 (46)
Expense adjustments 97
 (1,228)
Income before provision for income taxes 118,615
 117,743
 370,333
 327,498
 146,332
 121,714
Income tax expense 7,492
 34,899
 53,631
 91,352
 25,536
 20,814
Net income $111,123
 $82,844
 $316,702
 $236,146
 $120,796
 $100,900
(1)The operating PPNR non-GAAP performance metric is adjusted to exclude the effects of these non-operational items.
(2)The operating PPNR non-GAAP performance metric is adjusted to exclude
There were no adjustments made for non-recurring items during the effects of these non-recurring items. See Note 16. Related Party Transactions for further information regarding the charitable contribution.three months ended March 31, 2019 and 2018.
Operating Efficiency Ratio
The following table shows the components used in the calculation of the operating efficiency ratio, which management uses as a metric for assessing cost efficiency:
 Three Months Ended March 31,
 2019 2018
 (dollars in thousands)
Total operating non-interest expense$112,817
 $99,377
    
Divided by:   
Total net interest income$247,336
 $214,220
Plus:   
Tax equivalent interest adjustment6,094
 5,727
Operating non-interest income12,576
 12,717
Net operating revenue - TEB$266,006
 $232,664
    
Operating efficiency ratio - TEB42.4% 42.7%

Tangible Common Equity
The following table presents financial measures related to tangible common equity. Tangible common equity represents total stockholders' equity, less identifiable intangible assets and goodwill. Management believes that tangible common equity financial measures are useful in evaluating the Company's capital strength, financial condition, and ability to manage potential losses. In addition, management believes that these measures improve comparability to other institutions that have not engaged in acquisitions that resulted in recorded goodwill and other intangible assets.
September 30, 2018 December 31, 2017March 31, 2019 December 31, 2018
(dollars and shares in thousands)(dollars and shares in thousands)
Total stockholders' equity$2,488,393
 $2,229,698
$2,720,620
 $2,613,734
Less: goodwill and intangible assets299,553
 300,748
298,768
 299,155
Total tangible stockholders' equity2,188,840
 1,928,950
2,421,852
 2,314,579
Plus: deferred tax - attributed to intangible assets2,462
 2,698
2,183
 1,885
Total tangible common equity, net of tax$2,191,302
 $1,931,648
$2,424,035
 $2,316,464
      
Total assets$22,176,147
 $20,329,085
$23,792,846
 $23,109,486
Less: goodwill and intangible assets, net299,553
 300,748
298,768
 299,155
Tangible assets21,876,594
 20,028,337
23,494,078
 22,810,331
Plus: deferred tax - attributed to intangible assets2,462
 2,698
2,183
 1,885
Total tangible assets, net of tax$21,879,056
 $20,031,035
$23,496,261
 $22,812,216
      
Tangible equity ratio10.0% 9.6%
Tangible common equity ratio10.0
 9.6
10.3% 10.2%
Common shares outstanding105,861
 105,487
104,483
 104,949
Book value per share$23.51
 $21.14
$26.04
 $24.90
Tangible book value per share, net of tax20.70
 18.31
23.20
 22.07
Operating Efficiency Ratio
The following table shows the components used in the calculation of the operating efficiency ratio, which management uses as a metric for assessing cost efficiency:
 Three Months Ended September 30, Nine Months Ended September 30,
 2018 2017 2018 2017
 (dollars in thousands)
Total operating non-interest expense$105,045
 $89,030
 $307,149
 $265,589
        
Divided by:       
Total net interest income$234,038
 $201,583
 $672,366
 $573,635
Plus:       
Tax equivalent interest adjustment6,003
 10,837
 17,668
 30,966
Operating non-interest income12,862
 10,137
 39,708
 30,750
Net operating revenue - TEB$252,903
 $222,557
 $729,742
 $635,351
        
Operating efficiency ratio - TEB41.5% 40.0% 42.1% 41.8%
Operating efficiency ratio - TEB adjusted (1)  41.0%   42.9%
(1)The prior period operating efficiency ratios were adjusted to include the effects from the TCJA of the lower statutory corporate federal tax rate on the calculation of the tax equivalent adjustment in order to be comparable to the current period.


Regulatory Capital
The following table presents certain financial measures related to regulatory capital under Basel III, which includes Common Equity Tier 1 and total capital. The FRB and other banking regulators use Common Equity Tier 1 and total capital as a basis for assessing a bank's capital adequacy; therefore, management believes it is useful to assess financial condition and capital adequacy using this same basis. Specifically, the total capital ratio takes into consideration the risk levels of assets and off-balance sheet financial instruments. In addition, management believes that the classified assets to Common Equity Tier 1 plus allowance measure is an important regulatory metric for assessing asset quality.
September 30, 2018 December 31, 2017March 31, 2019 December 31, 2018
(dollars in thousands)(dollars in thousands)
Common Equity Tier 1:      
Common Equity$2,488,393
 $2,229,698
$2,720,620
 $2,613,734
Less:      
Non-qualifying goodwill and intangibles296,980
 296,421
296,496
 296,769
Disallowed deferred tax asset984
 638
2,134
 768
AOCI related adjustments(78,289) (9,496)(15,695) (47,055)
Unrealized gain on changes in fair value liabilities11,872
 7,785
7,490
 13,432
Common Equity Tier 1$2,256,846
 $1,934,350
$2,430,195
 $2,349,820
Divided by: Risk-weighted assets$20,690,767
 $18,569,608
$22,610,882
 $21,983,976
Common Equity Tier 1 ratio10.9% 10.4%10.7% 10.7%
      
Common Equity Tier 1$2,256,846
 $1,934,350
$2,430,195
 $2,349,820
Plus:      
Trust preferred securities81,500
 81,500
81,500
 81,500
Less:      
Disallowed deferred tax asset
 159

 
Unrealized gain on changes in fair value liabilities
 1,947

 
Tier 1 capital$2,338,346
 $2,013,744
$2,511,695
 $2,431,320
Divided by: Tangible average assets$21,286,259
 $19,624,517
$22,867,069
 $22,204,799
Tier 1 leverage ratio11.0% 10.3%11.0% 10.9%
      
Total Capital:      
Tier 1 capital$2,338,346
 $2,013,744
$2,511,695
 $2,431,320
Plus:      
Subordinated debt299,151
 301,020
304,903
 305,131
Qualifying allowance for credit losses150,011
 140,050
154,987
 152,717
Other7,617
 6,174
9,224
 8,188
Less: Tier 2 qualifying capital deductions
 

 
Tier 2 capital$456,779
 $447,244
$469,114
 $466,036
      
Total capital$2,795,125
 $2,460,988
$2,980,809
 $2,897,356
      
Total capital ratio13.5% 13.3%13.2% 13.2%
      
Classified assets to Tier 1 capital plus allowance for credit losses:      
Classified assets$252,770
 $222,004
$238,241
 $242,101
Divided by:      
Tier 1 capital2,338,346
 2,013,744
2,511,695
 2,431,320
Plus: Allowance for credit losses150,011
 140,050
154,987
 152,717
Total Tier 1 capital plus allowance for credit losses$2,488,357
 $2,153,794
$2,666,682
 $2,584,037
      
Classified assets to Tier 1 capital plus allowance10.2% 10.3%8.9% 9.4%

Net Interest Margin
The net interest margin is reported on a TEB. A tax equivalent adjustment is added to reflect interest earned on certain securities and loans that are exempt from federal and state income tax. The following tables set forth the average balances, interest income, interest expense, and average yield (on a fully TEB) for the periods indicated:
 Three Months Ended September 30, Three Months Ended March 31,
 2018 2017 2019 2018
 Average
Balance
 Interest Average
Yield / Cost
 Average
Balance
 Interest Average
Yield / Cost
 Average
Balance
 Interest Average
Yield / Cost
 Average
Balance
 Interest Average
Yield / Cost
 (dollars in thousands) (dollars in thousands)
Interest earning assets                        
Loans:                        
Commercial and industrial $7,171,099
 $100,312
 5.77% $6,330,760
 $80,638
 5.48% $7,538,711
 $109,089
 6.03% $6,580,935
 $85,547
 5.46%
CRE - non-owner-occupied 4,003,943
 59,383
 5.95
 3,609,484
 54,442
 6.06
 4,211,088
 62,441
 6.03
 3,920,777
 56,285
 5.84
CRE - owner-occupied 2,259,137
 30,407
 5.50
 2,032,664
 25,238
 5.24
 2,327,495
 30,084
 5.35
 2,241,787
 28,551
 5.28
Construction and land development 2,023,116
 35,959
 7.12
 1,633,378
 25,898
 6.36
 2,178,312
 39,704
 7.41
 1,789,356
 29,619
 6.72
Residential real estate 656,492
 7,800
 4.75
 351,517
 4,151
 4.72
 1,391,109
 16,567
 4.83
 425,267
 5,280
 5.04
Consumer 57,360
 848
 5.91
 52,168
 729
 5.59
 62,367
 933
 6.07
 47,935
 677
 5.73
Total loans (1), (2), (3) 16,171,147
 234,709
 5.90
 14,009,971
 191,096
 5.68
 17,709,082
 258,818
 6.02
 15,006,057
 205,959
 5.67
Securities:                        
Securities - taxable 2,738,621
 19,277
 2.82
 2,778,404
 17,399
 2.50
 2,762,640
 20,336
 2.99
 2,875,345
 19,149
 2.70
Securities - tax-exempt 875,207
 7,962
 4.55
 657,064
 6,185
 5.61
 895,582
 8,798
 4.98
 836,914
 7,472
 4.53
Total securities (1) 3,613,828
 27,239
 3.24
 3,435,468
 23,584
 3.10
 3,658,222
 29,134
 3.47
 3,712,259
 26,621
 3.11
Other 549,499
 3,268
 2.38
 845,852
 3,156
 1.49
 450,837
 3,216
 2.89
 425,667
 2,117
 2.02
Total interest earning assets 20,334,474
 265,216
 5.34
 18,291,291
 217,836
 5.00
 21,818,141
 291,168
 5.53
 19,143,983
 234,697
 5.09
Non-interest earning assets                        
Cash and due from banks 143,996
     132,285
     162,167
     142,356
    
Allowance for credit losses (148,162)     (133,555)     (154,249)     (141,030)    
Bank owned life insurance 168,821
     166,430
     170,480
     168,070
    
Other assets 1,002,468
     930,752
     1,112,937
     990,845
    
Total assets $21,501,597
     $19,387,203
     $23,109,476
     $20,304,224
    
Interest-bearing liabilities                        
Interest-bearing deposits:                        
Interest-bearing transaction accounts $1,938,180
 $3,256
 0.67% $1,476,506
 $1,066
 0.29% $2,495,848
 $5,583
 0.91% $1,654,720
 $1,380
 0.34%
Savings and money market accounts 6,580,274
 14,891
 0.91
 6,282,405
 7,135
 0.45
 7,446,639
 22,007
 1.20
 6,226,611
 8,915
 0.58
Time certificates of deposit 1,863,747
 7,119
 1.53
 1,585,690
 3,248
 0.82
 1,817,787
 8,198
 1.83
 1,579,940
 3,878
 1.00
Total interest-bearing deposits 10,382,201
 25,266
 0.97
 9,344,601
 11,449
 0.49
 11,760,274
 35,788
 1.23
 9,461,271
 14,173
 0.61
Short-term borrowings 28,471
 118
 1.66
 31,671
 96
 1.21
 315,755
 1,939
 2.49
 351,616
 1,335
 1.54
Qualifying debt 359,133
 5,794
 6.45
 375,276
 4,708
 5.02
 363,044
 6,105
 6.82
 368,849
 4,969
 5.46
Total interest-bearing liabilities 10,769,805
 31,178
 1.16
 9,751,548
 16,253
 0.67
 12,439,073
 43,832
 1.43
 10,181,736
 20,477
 0.82
Interest cost of funding earning assets     0.82
     0.43
Non-interest-bearing liabilities                        
Non-interest-bearing demand deposits 7,910,305
     7,174,532
     7,555,584
     7,510,614
    
Other liabilities 360,790
     336,939
     424,998
     338,530
    
Stockholders’ equity 2,460,697
     2,124,184
     2,689,821
     2,273,344
    
Total liabilities and stockholders' equity $21,501,597
     $19,387,203
     $23,109,476
     $20,304,224
    
Net interest income and margin (4)   $234,038
 4.72%   $201,583
 4.65%   $247,336
 4.71%   $214,220
 4.66%
TCJA adjusted net interest margin (5)           4.53%
(1)Yields on loans and securities have been adjusted to a TEB. The taxable-equivalent adjustment was $6.0$6.1 million and $10.8$5.7 million for the three months ended September 30,March 31, 2019 and 2018, and 2017, respectively.
(2)Included in the yield computation are net loan fees of $12.5$12.3 million and accretion on acquired loans of $3.3$2.8 million for the three months ended September 30, 2018,March 31, 2019, compared to $9.4$10.0 million and $7.5$5.7 million for the three months ended September 30, 2017,March 31, 2018, respectively.
(3)Includes non-accrual loans.
(4)Net interest margin is computed by dividing net interest income by total average earning assets.
(5)Prior period net interest margin is adjusted to include the effects from the TCJA of the lower statutory corporate federal tax rateassets, annualized on the calculation of the taxable-equivalent adjustment, which reduced this adjustment to $5.4 million, in order to be comparable to the current period.

  Nine Months Ended September 30,
  2018 2017
  Average
Balance
 Interest Average
Yield / Cost
 Average
Balance
 Interest Average
Yield / Cost
  (dollars in thousands)
Interest earning assets            
Loans:            
Commercial and industrial $6,887,005
 $280,101
 5.60% $6,050,380
 $224,985
 5.35%
CRE - non-owner occupied 3,963,287
 175,041
 5.90
 3,593,903
 160,719
 5.99
CRE - owner-occupied 2,247,891
 87,656
 5.31
 2,016,840
 75,895
 5.27
Construction and land development 1,922,353
 99,146
 6.89
 1,583,707
 72,965
 6.16
Residential real estate 505,908
 18,494
 4.87
 315,488
 11,125
 4.70
Consumer 52,585
 2,265
 5.74
 45,164
 1,617
 4.77
Total loans (1), (2), (3) 15,579,029
 662,703
 5.77
 13,605,482
 547,306
 5.58
Securities:            
Securities - taxable 2,805,128
 57,700
 2.74
 2,445,846
 44,684
 2.44
Securities - tax-exempt 853,748
 23,605
 4.61
 629,968
 17,643
 5.55
Total securities (1) 3,658,876
 81,305
 3.18
 3,075,814
 62,327
 3.07
Other 453,031
 7,507
 2.21
 745,049
 7,421
 1.33
Total interest earning assets 19,690,936
 751,515
 5.21
 17,426,345
 617,054
 4.96
Non-interest earning assets            
Cash and due from banks 143,787
     138,395
    
Allowance for credit losses (144,953)     (129,782)    
Bank owned life insurance 168,412
     165,692
    
Other assets 1,001,369
     917,089
    
Total assets $20,859,551
     $18,517,739
    
Interest-bearing liabilities            
Interest-bearing deposits:            
Interest-bearing transaction accounts $1,806,921
 $6,996
 0.52% $1,468,163
 $2,858
 0.26%
Savings and money market accounts 6,312,371
 36,130
 0.76
 6,169,860
 18,277
 0.39
Time certificates of deposit 1,720,537
 16,162
 1.25
 1,549,212
 8,371
 0.72
Total interest-bearing deposits 9,839,829
 59,288
 0.80
 9,187,235
 29,506
 0.43
Short-term borrowings 263,249
 3,403
 1.72
 58,749
 374
 0.85
Qualifying debt 363,556
 16,458
 6.04
 370,795
 13,539
 4.87
Total interest-bearing liabilities 10,466,634
 79,149
 1.01
 9,616,779
 43,419
 0.60
Non-interest-bearing liabilities 
          
Non-interest-bearing demand deposits 7,679,090
     6,548,351
    
Other liabilities 351,193
     315,453
    
Stockholders’ equity 2,362,634
     2,037,156
    
Total liabilities and stockholders' equity $20,859,551
     $18,517,739
    
Net interest income and margin (4)   $672,366
 4.67%   $573,635
 4.63%
TCJA adjusted net interest margin (5)     
     4.51%
(1)Yields on loans and securities have been adjusted to a TEB. The taxable-equivalent adjustment was $17.7 million and $31.0 million for the nine months ended September 30, 2018 and 2017, respectively.
(2)Included in the yield computation are net loan fees of $33.4 million and accretion on acquired loans of $14.1 million for the nine months ended September 30, 2018, compared to $26.0 million and $21.0 million for the nine months ended September 30, 2017, respectively.
(3)Includes non-accrual loans.
(4)Net interest margin is computed by dividing net interest income by total average earning assets.
(5)Prior period net interest margin is adjusted to include the effects from the TCJA of the lower statutory corporate federal tax rate on the calculation of the taxable-equivalent adjustment, which reduced this adjustment to $15.3 million, in order to be comparable to the current period.an actual/actual basis.



 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2018 versus 2017 2018 versus 2017 2019 versus 2018
 Increase (Decrease) Due to Changes in (1) Increase (Decrease) Due to Changes in (1) Increase (Decrease) Due to Changes in (1)
 Volume Rate Total Volume Rate Total Volume Rate Total
 (in thousands) (in thousands)
Interest income:                  
Loans:                  
Commercial and industrial $11,755
 $7,919
 $19,674
 $34,026
 $21,090
 $55,116
 $13,860
 $9,682
 $23,542
CRE - non-owner occupied 5,850
 (909) 4,941
 16,314
 (1,992) 14,322
 4,305
 1,851
 6,156
CRE - owner-occupied 3,048
 2,121
 5,169
 9,010
 2,751
 11,761
 1,108
 425
 1,533
Construction and land development 6,927
 3,134
 10,061
 17,466
 8,715
 26,181
 7,089
 2,996
 10,085
Residential real estate 3,624
 25
 3,649
 6,961
 408
 7,369
 11,502
 (215) 11,287
Consumer 77
 42
 119
 320
 328
 648
 216
 40
 256
Total loans 31,281
 12,332
 43,613
 84,097
 31,300
 115,397
 38,080
 14,779
 52,859
Securities:                  
Securities - taxable (280) 2,158
 1,878
 7,390
 5,626
 13,016
 (830) 2,017
 1,187
Securities - tax-exempt 1,985
 (208) 1,777
 6,187
 (225) 5,962
 576
 750
 1,326
Total securities 1,705
 1,950
 3,655
 13,577
 5,401
 18,978
 (254) 2,767
 2,513
Other (1,762) 1,874
 112
 (4,839) 4,925
 86
 180
 919
 1,099
Total interest income 31,224
 16,156
 47,380
 92,835
 41,626
 134,461
 38,006
 18,465
 56,471
                  
Interest expense:                  
Interest bearing transaction accounts $776
 $1,414
 $2,190
 $1,312
 $2,826
 $4,138
Interest-bearing transaction accounts $1,882
 $2,321
 $4,203
Savings and money market 674
 7,082
 7,756
 816
 17,037
 17,853
 3,606
 9,486
 13,092
Time certificates of deposit 1,062
 2,809
 3,871
 1,609
 6,182
 7,791
 1,073
 3,247
 4,320
Short-term borrowings (13) 35
 22
 2,644
 385
 3,029
 (220) 824
 604
Qualifying debt (260) 1,346
 1,086
 (328) 3,247
 2,919
 (98) 1,234
 1,136
Total interest expense 2,239
 12,686
 14,925
 6,053
 29,677
 35,730
 6,243
 17,112
 23,355
                  
Net increase $28,985
 $3,470
 $32,455
 $86,782
 $11,949
 $98,731
 $31,763
 $1,353
 $33,116
 
(1)Changes attributable to both volume and rate are designated as volume changes.
Comparison of interest income, interest expense and net interest margin
The Company's primary source of revenue is interest income. For the three months ended September 30, 2018,March 31, 2019, interest income was $265.2$291.2 million, an increase of $47.4$56.5 million, or 21.8%24.1%, compared to $217.8$234.7 million for the three months ended September 30, 2017.March 31, 2018. This increase was primarily the result of a $2.16$2.70 billion increase in the average loan balance, which, together with the effect of the rising rate environment, drove a $43.6$52.9 million increase in loan interest income for the three months ended September 30, 2018.March 31, 2019. Interest income from investment securities increased by $3.7$2.5 million for the comparable period primarily due to an increase in the average investment balance of $178.4 million from September 30, 2017 as well as an increase in interest rates and mix.from March 31, 2018. Average yield on interest earning assets increased to 5.34%5.53% for the three months ended September 30, 2018,March 31, 2019, compared to 5.00%5.09% for the same period in 2017,2018, which was primarily the result of loan growth and increased yields on loans and investment securities, attributable to the rising interest rate environment, partially offset by a decrease in the tax equivalent adjustment on tax-exempt loans and investment securities, which resulted from the TCJA.
For the nine months ended September 30, 2018, interest income was $751.5 million, an increase of $134.5 million, or 21.8%, compared to $617.1 million for the nine months ended September 30, 2017. This increase was primarily the result of a $1.97 billion increase in the average loan balance compared to the same period in the prior year which, together with the effect of the rising rate environment, drove a $115.4 million increase in loan interest income for the nine months ended September 30, 2018. Interest income from investment securities increased by $19.0 million for the comparable period primarily due to an increase in the average investment balance of $583.1 million from September 30, 2017 as well as an increase in interest rates and mix. Average yield on interest earning assets increased to 5.21% for the nine months ended September 30, 2018, compared to 4.96% for the same period in 2017, which was primarily the result of increased yields on loans and investment securities, attributable to the rising interest rate environment, partially offset by a decrease in the tax equivalent adjustment on tax-exempt loans and investment securities.

environment.
For the three months ended September 30, 2018,March 31, 2019, interest expense was $31.2$43.8 million, an increase of $14.9$23.4 million, or 91.8%114.1%, compared to $16.3$20.5 million for the three months ended September 30, 2017.March 31, 2018. Interest expense on deposits increased $13.8$21.6 million for the same period as average interest-bearing deposits increased $1.04$2.30 billion, resulting in a 4862 basis point increase in average cost of interest-bearing deposits. Interest expense on qualifying debt and short-term borrowings remained consistentincreased $1.1 million and $0.6 million, respectively, for the three months ended September 30, 2018 and 2017, which is due to decrease of average short-term borrowings of $3.2 million that was offset by 45 basis point increase in average cost of short-term borrowings.
For the nine months ended September 30, 2018, interest expense was $79.1 million, an increase of $35.7 million, or 82.3%, compared to $43.4 million for the nine months ended September 30, 2017. Interest expense on deposits increased $29.8 million for the same period as average interest-bearing deposits increased $652.6 million, resulting in a 37 basis point increase in average cost of interest-bearing deposits. Interest expense on short-term borrowings increased by $3.0 million for the nine months ended September 30, 2018March 31, 2019 compared to the same period in 2017. The increase is attributable to an increase in average short-term borrowings of $204.5 millionthree months ended March 31, 2018, due to utilization of FHLB overnight advances.higher interest rates.
For the three months ended September 30, 2018,March 31, 2019, net interest income was $234.0$247.3 million, an increase of $32.5$33.1 million, or 16.1%15.5%, compared to $201.6$214.2 million for the three months ended September 30, 2017.March 31, 2018. The increase in net interest income reflects a $2.04$2.67 billion increase in average interest-earning assets, partially offset by an increase of $1.02$2.26 billion in average interest-bearing liabilities. The increase in net interest margin of 75 basis points to 4.72%4.71% is the result of increased yields on loans and investment securities, partially offset by higher deposit and funding costs and a decrease in the tax equivalent adjustment on tax-exempt loans and securities for the three months ended September 30, 2018,March 31, 2019, compared to the same period in 2017. Adjusting net interest margin to include the effects of the TCJA results in TCJA adjusted net interest margin of 4.53% for the three months ended September 30, 2017.2018.
For the nine months ended September 30, 2018, net interest income was $672.4 million, an increase of $98.7 million, or 17.2%, compared to $573.6 million for the nine months ended September 30, 2017. The increase in net interest income reflects a $2.26 billion increase in average interest-earning assets, offset by an $849.9 million increase in average interest-bearing liabilities. The increase in net interest margin of 4 basis points to 4.67% is the result of increased yields on loans and investment securities, partially offset by higher deposit and funding costs and a decrease in the tax equivalent adjustment on tax-exempt loans and securities for the nine months ended September 30, 2018, compared to the same period in 2017. Adjusting net interest margin to include the effects of the TCJA results in TCJA adjusted net interest margin of 4.51% for the nine months ended September 30, 2017.
Provision for Credit Losses
The provision for credit losses in each period is reflected as a reduction in earnings for that period. The provision is equal to the amount required to maintain the allowance for credit losses at a level that is adequate to absorb probable credit losses inherent in the loan portfolio. For the three months ended September 30, 2018,March 31, 2019, the provision for credit losses was $6.0$3.5 million compared to $5.0$6.0 million for the three months ended September 30, 2017. For the nine months ended September 30, 2018,March 31, 2018. The decrease in the provision for credit losses was $17.0 million,driven by loan mix. For the three months ended March 31, 2019, loan growth was driven by residential real estate loans, which carry a lower credit risk profile, compared to $12.3 millionconstruction and land development and commercial and industrial loans, which were the drivers of loan growth for the ninethree months ended September 30, 2017. The provision increase was primarily due to organic growth in total loans of $2.21 billionfromSeptember 30, 2017. The Company defines its organic loans as those loans that have not been acquired in a transaction accounted for as a business combination. March 31, 2018.
The Company may establish an additional allowance for credit losses for PCI loans through provision for credit losses when impairment is determined as a result of lower than expected cash flows. As of September 30, 2018March 31, 2019 and December 31, 2017,2018, the allowance for credit losses on PCI loans was $0.2 million and $1.6 million, respectively.

$0.1 million.
Non-interest Income
The following table presents a summary of non-interest income for the periods presented: 
 Three Months Ended September 30, Nine Months Ended September 30, Three Months Ended March 31,
 2018 2017 Increase (Decrease) 2018 2017 Increase (Decrease) 2019 2018 Increase (Decrease)
 (in thousands) (in thousands)
Service charges and fees $5,267
 $5,248
 $19
 $16,684
 $15,189
 $1,495
 $5,412
 $5,745
 $(333)
Income from equity investments 2,009
 1,460
 549
Card income 2,138
 1,509
 629
 6,143
 4,517
 1,626
 1,841
 1,972
 (131)
Income from equity investments 1,440
 967
 473
 5,417
 2,977
 2,440
Lending related income and gains (losses) on sale of loans, net 1,422
 97
 1,325
 3,447
 746
 2,701
Foreign currency income 1,092
 756
 336
 3,475
 2,630
 845
 1,095
 1,202
 (107)
Income from bank owned life insurance 868
 975
 (107) 2,963
 2,896
 67
 981
 928
 53
(Loss) gain on sales of investment securities, net (7,232) 319
 (7,551) (7,232) 907
 (8,139)
Unrealized (losses) gains on assets measured at fair value, net (1,212) 
 (1,212) (2,971) (1) (2,970)
Lending related income and gains (losses) on sale of loans, net 251
 978
 (727)
Unrealized gains (losses) on assets measured at fair value, net 2,834
 (1,074) 3,908
Other income 635
 585
 50
 1,579
 1,795
 (216) 987
 432
 555
Total non-interest income $4,418
 $10,456
 $(6,038) $29,505
 $31,656
 $(2,151) $15,410
 $11,643
 $3,767
Total non-interest income for the three months ended September 30, 2018March 31, 2019 compared to the same period in 2017, decreased2018, increased by $6.0$3.8 million, or 57.7%32.4%. The decreaseincrease in non-interest income is due primarily to a net loss on sales of investment securities and unrealized losses on assets measured at fair value. The net loss on sales of investment securities of $7.2 million relate to sales of low yielding investment securities, which were replaced with investment securities with shorter durations and higher yields. Unrealized lossesgains on assets measured at fair value of $1.2$2.8 million relate to fair value changes in the Company's equity securities. Due to adoption of ASU 2016-01, effective January 1, 2018, changes in the fair value of equity securities are recognized in net income rather than accumulated other comprehensive income. These decreases were partially offset by increases in lending related income of $1.3 million primarily related to a gain on a loan sale and card income of $0.6 million largely resulting from an increase in credit card interchange income.
Total non-interest income for the nine months ended September 30, 2018 compared same period in 2017, decreased by $2.2 million, or 6.8%. The decrease in non-interest income is due primarily to a net loss on sales of investment securities and unrealized losses on assets measured at fair value. The net loss on sales of investment securities of $7.2 million and unrealized losses on assets measured at fair value of $3.0 million are due to the same factors discussed in the above paragraph for the three months ended September 30,March 31, 2019, compared to an unrealized loss of $1.1 million for the three months ended March 31, 2018. Income from equity investments also increased $0.5 million from an increase in both warrant and SBIC income. These decreasesincreases were partially offset by increasesa decrease of $0.7 million in lending related income andprimarily related to $0.4 million in net losses on loan sales for the three months ended March 31, 2019, compared to net gains on saleloan sales of loans of $2.7$0.7 million and income from equity investments of $2.4 million resulting from increased warrant income.for the three months ended March 31, 2018.


Non-interest Expense
The following table presents a summary of non-interest expense for the periods presented:
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
2018 2017 Increase (Decrease) 2018 2017 Increase (Decrease)2019 2018 Increase (Decrease)
(in thousands)(in thousands)
Salaries and employee benefits$64,762
 $52,747
 $12,015
 $188,680
 $156,640
 $32,040
$68,556
 $62,133
 $6,423
Occupancy8,227
 6,864
 1,363
Legal, professional, and directors' fees7,907
 6,038
 1,869
 21,856
 23,324
 (1,468)7,532
 6,003
 1,529
Occupancy7,406
 7,507
 (101) 21,671
 21,328
 343
Data processing5,895
 4,524
 1,371
 16,688
 14,163
 2,525
6,332
 5,207
 1,125
Deposit costs4,848
 2,904
 1,944
 11,888
 6,778
 5,110
5,724
 2,926
 2,798
Insurance3,712
 3,538
 174
 11,466
 10,355
 1,111
2,809
 3,869
 (1,060)
Business development1,381
 1,439
 (58) 4,523
 4,949
 (426)2,085
 1,728
 357
Card expense1,282
 966
 316
 3,305
 2,558
 747
Loan and repossessed asset expenses1,230
 1,263
 (33) 2,830
 3,639
 (809)2,006
 583
 1,423
Marketing687
 776
 (89) 2,429
 2,628
 (199)741
 596
 145
Card expense634
 942
 (308)
Intangible amortization398
 489
 (91) 1,195
 1,666
 (471)387
 398
 (11)
Net (gain) loss on sales / valuations of repossessed and other assets(67) 266
 (333) (1,474) (46) (1,428)
Net loss (gain) on sales / valuations of repossessed and other assets97
 (1,228) 1,325
Other expense14,400
 6,839
 7,561
 29,481
 17,561
 11,920
7,784
 8,128
 (344)
Total non-interest expense$113,841
 $89,296
 $24,545
 $314,538
 $265,543
 $48,995
$112,914
 $98,149
 $14,765
Total non-interest expense for the three months ended September 30, 2018,March 31, 2019, compared to the same period in 2017,2018, increased $24.5$14.8 million, or 27.5%15.0%. This increase primarily relates to salaries and employee benefits, other non-interest expense, deposit costs, and legal, professional, and directors' fees, and data processing.fees. Salaries and employee benefits have increased as the Company supports its continued growth. Full-time equivalent employees increased 7.3%3.5% from 1,6731,713 at September 30, 2017,March 31, 2018, compared to 1,7951,773 at September 30, 2018. The increase in other non-interest expense primarily relates to a $7.6 million donation to the Company's charitable foundation, which is further discussed in Note 16. Related Party Transactions.March 31, 2019. Deposits costs consist of fees to Promontory Interfinancial Network and others for reciprocal deposits as well as earnings credits on select non-interest bearing deposits. The increase in deposit costs for the three months ended September 30, 2018,March 31, 2019, compared to the same period in 2017,2018, primarily relates to an increase in deposit earnings credits paid to account holders. The increase in legal, professional, and directors' fees largely relates to an increase in consulting fees. The increase in data processing fees relates to increased software costs.
Total non-interest expense for the nine months ended September 30, 2018, compared to the same period in 2017, increased $49.0 million, or 18.5%. This increase primarily relates to salaries and employee benefits, other expense, deposit costs and data processing. The increases in these non-interest expense items for nine months ended September 30, 2018 are due to the same factors discussed in the above paragraph for the three months ended September 30, 2018.
Income Taxes
The effective tax rate was 6.32%17.45% and 29.64%17.10% for the three months ended September 30,March 31, 2019 and 2018, and 2017, respectively. For the nine months ended September 30, 2018 and 2017, the Company's effective tax rate was 14.48% and 27.89%, respectively. The decreaseincrease in the effective tax rate from the three and nine months ended September 30, 2017March 31, 2018 is due primarily to the decreasean increase in the Federal statutory rate effective in 2018pre-tax book income and management's decision during the quarter to carryback its 2017 federal NOLs. These federal NOLs resulteda smaller benefit from the acceleration of deductions into and deferral of revenue from 2017. As the federal income tax rate was higher in the years to which the carryback is applicable, a larger tax benefit results from the decision to carryback the 2017 federal NOLs, rather than carryforward these losses to future taxable years.excess stock compensation deduction.

Business Segment Results
The Company's reportable segments are aggregated primarily based on geographic location, services offered, and markets served. The Company's regional segments, which include Arizona, Nevada, Southern California, and Northern California, provide full service banking and related services to their respective markets. The Company's NBL segments, which include HOA Services, Public & Nonprofit Finance, Technology & Innovation, HFF, and Other NBLs, provide specialized banking services to niche markets. These NBLs are managed centrally and are broader in geographic scope than the Company's other segments, though still predominately located within the Company's core market areas. The Corporate & Other segment consists of corporate-related items, income and expense items not allocated to the Company's other reportable segments, and inter-segment eliminations.
The following tables present selected operating segment information for the periods presented:
   Regional Segments   Regional Segments
 Consolidated Company Arizona Nevada Southern California Northern California Consolidated Company Arizona Nevada Southern California Northern California
At September 30, 2018 (in millions)
At March 31, 2019 (in millions)
Loans, net of deferred loan fees and costs $16,732.8
 $3,593.5
 $1,936.7
 $2,116.3
 $1,332.3
 $18,116.7
 $3,653.9
 $2,069.4
 $2,249.8
 $1,197.2
Deposits 18,908.6
 5,331.7
 3,847.3
 2,550.7
 1,951.5
 20,208.7
 5,319.9
 4,006.8
 2,793.8
 2,008.7
                    
At December 31, 2017          
At December 31, 2018          
Loans, net of deferred loan fees and costs $15,093.9
 $3,323.7
 $1,844.8
 $1,934.7
 $1,275.5
 $17,710.6
 $3,647.9
 $2,003.5
 $2,161.1
 $1,300.2
Deposits 16,972.5
 4,841.3
 3,951.4
 2,461.1
 1,681.7
 19,177.4
 5,090.2
 3,996.4
 2,347.5
 1,839.1
 (in thousands) (in thousands)
Three Months Ended September 30, 2018          
Three Months Ended March 31, 2019          
Pre-tax income $118,615
 $35,997
 $24,073
 $14,704
 $12,448
 $146,332
 $34,338
 $25,355
 $16,162
 $12,482
                    
Nine Months Ended September 30, 2018          
Three Months Ended March 31, 2018          
Pre-tax income $370,333
 $106,326
 $74,002
 $43,545
 $35,180
 $121,714
 $33,033
 $27,662
 $14,428
 $10,751
          
Three Months Ended September 30, 2017          
Pre-tax income $117,743
 $35,347
 $25,960
 $15,500
 $9,267
          
Nine Months Ended September 30, 2017          
Pre-tax income $327,498
 $93,909
 $74,473
 $45,646
 $29,099
  National Business Lines  
  HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
At March 31, 2019 (in millions)
Loans, net of deferred loan fees and costs $209.4
 $1,561.7
 $1,057.3
 $1,564.9
 $4,549.0
 $4.1
Deposits 2,963.0
 
 2,404.7
 
 5.3
 706.5
             
At December 31, 2018            
Loans, net of deferred loan fees and costs $210.0
 $1,547.5
 $1,200.9
 $1,479.9
 $4,154.9
 $4.7
Deposits 2,607.2
 
 2,559.0
 
 
 738.0
  (in thousands)
Three Months Ended March 31, 2019            
Pre-tax income $12,304
 $1,557
 $21,793
 $9,747
 $14,034
 $(1,440)
             
Three Months Ended March 31, 2018            
Pre-tax income $7,659
 $1,779
 $14,388
 $10,756
 $12,088
 $(10,830)

  National Business Lines  
  HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
At September 30, 2018 (in millions)
Loans, net of deferred loan fees and costs $202.1
 $1,520.2
 $1,106.5
 $1,435.4
 $3,483.2
 $6.6
Deposits 2,523.9
 
 2,319.5
 
 
 384.0
             
At December 31, 2017            
Loans, net of deferred loan fees and costs $162.1
 $1,580.4
 $1,097.9
 $1,327.7
 $2,543.0
 $4.1
Deposits 2,230.4
 
 1,737.6
 
 
 69.0
  (in thousands)
Three Months Ended September 30, 2018            
Pre-tax income $9,788
 $2,261
 $18,688
 $10,320
 $10,384
 $(20,048)
             
Nine Months Ended September 30, 2018  
Pre-tax income $25,503
 $5,783
 $49,112
 $32,204
 $34,229
 $(35,551)
             
Three Months Ended September 30, 2017            
Pre-tax income $6,831
 $5,308
 $13,529
 $12,325
 $7,610
 $(13,934)
             
Nine Months Ended September 30, 2017            
Pre-tax income $18,944
 $14,339
 $37,798
 $31,464
 $23,174
 $(41,348)
BALANCE SHEET ANALYSIS
Total assets increased $1.85 billion,$683.4 million, or 9.1%3.0%, to $22.18$23.79 billion at September 30, 2018,March 31, 2019, compared to $20.33$23.11 billion at December 31, 2017.2018. The increase in total assets relates primarily to organic loan growth. Loans increased $1.64 billion,$406.1 million, or 10.9%2.3%, to $16.73$18.12 billion at September 30, 2018,March 31, 2019, compared to $15.09$17.71 billion at December 31, 2017.2018. The increase in loans from December 31, 20172018 was driven by commercial and industrialresidential real estate loans of $646.3$257.2 million, construction and land development loans of $475.4$148.8 million, and residential real estateCRE non-owner occupied loans of $401.1$90.8 million. These increases were partially offset by decreases in CRE owner-occupied loans of $40.0 million, commercial and industrial loans of $38.9 million, and consumer loans of $11.7 million.
Total liabilities increased $1.59 billion,$576.5 million, or 8.8%2.8%, to $19.69$21.07 billion at September 30, 2018,March 31, 2019, compared to $18.10$20.50 billion at December 31, 2017.2018. The increase in liabilities is due primarily to an increase in total deposits of $1.94$1.03 billion, or 11.4%5.4%, to $18.91$20.21 billion, all of which is attributable to organic deposit growth. This increase was partially offset by a decrease of $491.0 million in overnight borrowings.
Total stockholders’ equity increased by $258.7$106.9 million, or 11.6%4.1%, to $2.49$2.72 billion at September 30, 2018,March 31, 2019, compared to $2.23$2.61 billion at December 31, 2017.2018. The increase in stockholders' equity relates primarily to net income for the ninethree months ended September 30, 2018, partially offset by a decreaseMarch 31, 2019 and an increase in the fair value of the Company's AFS portfolio, which is recognized as part of AOCI.AOCI, partially offset by share repurchases.
Investment securities
Debt securities are classified at the time of acquisition as either HTM, AFS, or trading based upon various factors, including asset/liability management strategies, liquidity and profitability objectives, and regulatory requirements. HTM securities are carried at amortized cost, adjusted for amortization of premiums or accretion of discounts. AFS securities are securities that may be sold prior to maturity based upon asset/liability management decisions. Investment securities classified as AFS are carried at fair value. Unrealized gains or losses on AFS debt securities are recorded as part of AOCI in stockholders’ equity. Amortization of premiums or accretion of discounts on MBS is periodically adjusted for estimated prepayments. Trading securities are reported at fair value, with unrealized gains and losses included in current period earnings.
For periods prior to January 1, 2018, equity securities were classified as AFS and reported at fair value with unrealized gains and losses included as a separate component of AOCI, net of tax. Upon adoption of ASU 2016-01, equity securities are no longer reported as part of AFS securities and changes in fair value are recognized as part of non-interest income.

The Company's investment securities portfolio is utilized as collateral for borrowings, required collateral for public deposits and customer repurchase agreements, and to manage liquidity, capital, and interest rate risk. The following table summarizes the carrying value of the investment securities portfolio for each of the periods below: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Debt securities        
CDO $19,148
 $21,857
 $15,026
 $15,327
Commercial MBS issued by GSEs 100,943
 109,077
 99,099
 100,106
Corporate debt securities 99,384
 103,483
 97,042
 99,380
Private label residential MBS 855,942
 868,524
 935,347
 924,594
Residential MBS issued by GSEs 1,450,059
 1,689,295
 1,492,236
 1,530,124
Tax-exempt 793,197
 765,960
 847,855
 841,573
Trust preferred securities 28,617
 28,617
 28,617
 28,617
U.S. government sponsored agency securities 45,601
 61,462
 38,901
 38,188
U.S. treasury securities 2,475
 2,482
 989
 1,984
Total debt securities 3,395,366
 3,650,757
 $3,555,112
 $3,579,893
    
Equity securities        
CRA investments 50,744
 53,196
 $51,614
 $51,142
Preferred stock 121,550
 50,616
 66,391
 63,919
Total equity securities 172,294
 103,812
 $118,005
 $115,061
Total investment securities $3,567,660
 $3,754,569

Loans
The table below summarizes the distribution of the Company’s held for investment loan portfolio: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Commercial and industrial $7,487,725
 $6,841,381
 $7,723,695
 $7,762,642
Commercial real estate - non-owner occupied 3,952,966
 3,904,011
 4,304,261
 4,213,428
Commercial real estate - owner occupied 2,288,156
 2,241,613
 2,285,340
 2,325,380
Construction and land development 2,107,631
 1,632,204
 2,283,527
 2,134,753
Residential real estate 827,073
 425,940
 1,461,561
 1,204,355
Consumer 69,214
 48,786
 58,364
 70,071
Loans, net of deferred loan fees and costs 16,732,765
 15,093,935
 18,116,748
 17,710,629
Allowance for credit losses (150,011) (140,050) (154,987) (152,717)
Total loans HFI $16,582,754
 $14,953,885
 $17,961,761
 $17,557,912
Net deferred loan fees and costs as of September 30, 2018March 31, 2019 and December 31, 20172018 total $31.0$34.8 million and $25.3$36.3 million, respectively, which is a reduction in the carrying value of loans. Net unamortized purchase discounts on secondary market loan purchases total $3.3$8.2 million and $8.5$2.0 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. Total loans held for investment are also net of interest rate and credit marks on acquired loans, which are a net reduction in the carrying value of loans. Interest rate marks were $8.7$6.1 million and $14.1$7.1 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. Credit marks were $17.2$13.1 million and $27.0$14.6 million as of September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.

Concentrations of Lending Activities
The Company monitors concentrations within four broad categories: geography, industry, product, and collateral. The Company’s loan portfolio includes significant credit exposure to the CRE market. As of September 30, 2018each of the periods ended March 31, 2019 and December 31, 2017,2018, CRE related loans accounted for approximately 50% and 52%49% of total loans, respectively.loans. Substantially all of these loans are secured by first liens with an initial loan to value ratio of generally not more than 75%. Approximately 37%35% and 36% of these CRE loans, excluding construction and land loans, were owner-occupied at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.
Impaired loans
A loan is identified as impaired when it is no longer probable that interest and principal will be collected according to the contractual terms of the original loan agreement. Generally, impaired loans are classified as non-accrual. However, in certain instances, impaired loans may continue on an accrual basis if full repayment of all principal and interest is expected and the loan is both well-secured and in the process of collection. Impaired loans are measured for reserve requirements in accordance with ASC 310 based on the present value of expected future cash flows discounted at the loan's effective interest rate or, as a practical expedient, at the loan's observable market price or the fair value of the collateral less applicable disposition costs if the loan is collateral dependent. The amount of an impairment reserve, if any, and any subsequent changes are charged against the allowance for credit losses.
In addition to the Company's own internal loan review process, regulators may from time to time direct the Company to modify loan grades, loan impairment calculations, or loan impairment methodology.
Total non-performing loans decreasedincreased by $7.0$31.6 million, or 8.1%48.7%, at September 30, 2018March 31, 2019 to $79.4$96.4 million from $86.4$64.8 million at December 31, 2017.2018. 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (dollars in thousands) (dollars in thousands)
Total non-accrual loans (1) $36,868
 $43,925
 $43,887
 $27,746
Loans past due 90 days or more on accrual status (2) 
 43
 
 594
Accruing troubled debt restructured loans 42,567
 42,431
 52,488
 36,458
Total nonperforming loans, excluding loans acquired with deteriorated credit quality 79,435
 86,399
 96,375
 64,798
Other impaired loans 46,134
 12,155
 47,023
 47,454
Total impaired loans $125,569
 $98,554
 $143,398
 $112,252
Other assets acquired through foreclosure, net $20,028
 $28,540
 $17,707
 $17,924
Non-accrual loans to gross loans held for investment 0.22% 0.29% 0.24% 0.16%
Loans past due 90 days or more on accrual status to gross loans held for investment 
 0.00
 
 0.00
(1)Includes non-accrual TDR loans of $9.6$16.4 million and $10.1$8.0 million at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.
(2)Includes less than $0.1 million from loans acquired with deteriorated credit quality at December 31, 2017.

Interest income received on non-accrual loans was $0.6 million and $0.7 million for the three months ended September 30, 2018 and 2017, respectively, and $1.4$0.4 million for each of the ninethree months ended September 30, 2018March 31, 2019 and 2017.2018. Interest income that would have been recorded under the original terms of non-accrual loans was $0.6$0.3 million and $0.7$0.6 million for the three months ended September 30,March 31, 2019 and 2018, and 2017, respectively, and $1.8 million for each of the nine months ended September 30, 2018 and 2017.


respectively.
The composition of non-accrual loans by loan type and by segment were as follows: 
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 Non-accrual
Balance
 Percent of Non-Accrual Balance Percent of
Total HFI
Loans
 Non-accrual
Balance
 Percent of Non-Accrual Balance Percent of
Total HFI
Loans
 Non-accrual
Balance
 Percent of Non-Accrual Balance Percent of
Total Loans
 Non-accrual
Balance
 Percent of Non-Accrual Balance Percent of
Total Loans
 (dollars in thousands) (dollars in thousands)
Commercial and industrial $23,977
 65.03% 0.14% $22,026
 50.14% 0.15% $31,074
 70.81% 0.17% $15,090
 54.39% 0.09%
Commercial real estate 
 
 
 7,721
 17.58
 0.05
 1,000
 2.28
 0.01
 
 
 
Construction and land development 
 
 
 5,979
 13.61
 0.04
 3,783
 8.62
 0.02
 476
 1.71
 0.00
Residential real estate 12,558
 34.06
 0.08
 8,117
 18.48
 0.05
 7,914
 18.03
 0.04
 11,939
 43.03
 0.07
Consumer 333
 0.90
 
 82
 0.19
 0.00
 116
 0.26
 0.00
 241
 0.87
 0.00
Total non-accrual loans $36,868
 100.00% 0.22% $43,925
 100.00% 0.29% $43,887
 100.00% 0.24% $27,746
 100.00% 0.16%
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 Nonaccrual Loans Percent of Segment's Total HFI Loans Nonaccrual Loans Percent of Segment's Total HFI Loans Nonaccrual Loans Percent of Segment's Total Loans Nonaccrual Loans Percent of Segment's Total Loans
 (dollars in thousands) (dollars in thousands)
Arizona $11,987
 0.33% $4,520
 0.14% $5,332
 0.15% $8,312
 0.23%
Nevada 6,489
 0.34
 8,189
 0.44
 5,730
 0.28
 6,374
 0.32
Southern California 8,344
 0.39
 8,140
 0.42
 3,768
 0.17
 8,564
 0.40
Northern California 4,417
 0.33
 14,489
 1.14
 14,643
 1.22
 4,255
 0.33
Public & Nonprofit Finance 3,307
 0.21
 
 
Technology and Innovation 5,149
 0.47
 7,389
 0.67
 10,991
 1.04
 
 
Other NBLS 482
 0.01
 51
 0.00
 116
 0.00
 241
 0.00
Corporate & Other 
 
 1,147
 28.09
Total non-accrual loans $36,868
 0.22% $43,925
 0.29% $43,887
 0.24% $27,746
 0.16%
Troubled Debt Restructured Loans
A TDR loan is a loan that is granted a concession, for reasons related to a borrower’s financial difficulties, that the lender would not otherwise consider. The loan terms that have been modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in accrued interest, extensions, deferrals, renewals, and rewrites. A TDR loan is also considered impaired. Generally, a loan that is modified at an effective market rate of interest is no longer disclosed as a TDR in years subsequent to the restructuring if it is performing based on the terms specified by the restructuring agreement. However, such loans continue to be considered impaired.
As of September 30, 2018March 31, 2019 and December 31, 2017,2018, the aggregate amount of loans classified as impaired was $125.6$143.4 million and $98.6$112.3 million, respectively. The total specific allowance for credit losses related to these loans was $1.2$1.4 million and $5.6$0.7 million at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. The Company had $42.6$52.5 million and $36.5 million in loans classified as accruing restructured loans at September 30, 2018March 31, 2019 and December 31, 2017.2018, respectively.

Impaired loans by segment at September 30, 2018March 31, 2019 and December 31, 20172018 were as follows:
 September 30, 2018 December 31, 2017 March 31, 2019 December 31, 2018
 (in thousands) (in thousands)
Arizona $37,156
 $10,468
 $32,217
 $34,899
Nevada 34,682
 46,730
 48,973
 33,860
Southern California 8,664
 8,465
 4,080
 8,576
Northern California 5,088
 14,489
 15,314
 4,928
Public & Nonprofit Finance 3,307
 
Technology & Innovation 39,498
 16,449
 39,391
 29,748
Other NBLs 481
 51
 116
 241
Corporate & Other 
 1,902
Total impaired loans $125,569
 $98,554
 $143,398
 $112,252
The following tables present a breakdown of total impaired loans and the related specific reserves for the periods indicated:
 September 30, 2018 March 31, 2019
 Impaired
Balance
 Percent of Impaired Balance Percent of
Total HFI Loans
 Reserve
Balance
 Percent of Reserve Balance Percent of
Total Allowance
 Impaired
Balance
 Percent of Impaired Balance Percent of
Total Loans
 Reserve
Balance
 Percent of Reserve Balance Percent of
Total Allowance
 (dollars in thousands) (dollars in thousands)
Commercial and industrial $76,185
 60.68% 0.46% $1,111
 94.88% 0.74% $78,768
 54.93% 0.43% $297
 21.89% 0.19%
Commercial real estate 19,204
 15.29
 0.11
 
 
 
 20,453
 14.26
 0.11
 
 
 
Construction and land development 9,128
 7.27
 0.05
 
 
 
 28,615
 19.96
 0.16
 810
 59.69
 0.52
Residential real estate 20,686
 16.47
 0.12
 60
 5.12
 0.04
 15,417
 10.75
 0.09
 250
 18.42
 0.16
Consumer 366
 0.29
 
 
 
 
 145
 0.10
 
 
 
 
Total impaired loans $125,569
 100.00% 0.75% $1,171
 100.00% 0.78% $143,398
 100.00% 0.79% $1,357
 100.00% 0.88%
 
 December 31, 2017 December 31, 2018
 Impaired
Balance
 Percent of Impaired Balance Percent of
Total HFI Loans
 Reserve
Balance
 Percent of Reserve Balance Percent of
Total Allowance
 Impaired
Balance
 Percent of Impaired Balance Percent of
Total Loans
 Reserve
Balance
 Percent of Reserve Balance Percent of
Total Allowance
 (dollars in thousands) (dollars in thousands)
Commercial and industrial $34,156
 34.66% 0.23% $5,606
 100.00% 4.00% $63,896
 56.92% 0.36% $621
 91.19% 0.41%
Commercial real estate 31,681
 32.15
 0.21
 
 
 
 18,937
 16.87
 0.11
 
 
 
Construction and land development 15,426
 15.65
 0.10
 
 
 
 9,403
 8.38
 0.05
 
 
 
Residential real estate 17,170
 17.42
 0.11
 
 
 
 19,744
 17.59
 0.11
 60
 8.81
 0.04
Consumer 121
 0.12
 0.00
 
 
 
 272
 0.24
 0.00
 
 
 
Total impaired loans $98,554
 100.00% 0.65% $5,606
 100.00% 4.00% $112,252
 100.00% 0.63% $681
 100.00% 0.45%


Allowance for Credit Losses
The following table summarizes the activity in the Company's allowance for credit losses for the period indicated: 
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended March 31,
2018 2017 2018 20172019 2018
(dollars in thousands)(dollars in thousands)
Allowance for credit losses:          
Balance at beginning of period$147,083
 $131,811
 $140,050
 $124,704
$152,717
 $140,050
Provision charged to operating expense:          
Commercial and industrial5,652
 7,192
 13,022
 11,752
(4,217) 3,143
Commercial real estate(1,250) (1,474) (905) 2,327
2,585
 1,247
Construction and land development473
 (619) 1,726
 (1,727)3,515
 1,695
Residential real estate832
 (141) 2,804
 (258)1,825
 (102)
Consumer293
 42
 353
 156
(208) 17
Total Provision6,000
 5,000
 17,000
 12,250
3,500
 6,000
Recoveries of loans previously charged-off:          
Commercial and industrial(362) (619) (1,737) (2,705)(477) (459)
Commercial real estate(856) (1,781) (1,228) (2,719)(453) (126)
Construction and land development(24) (226) (1,420) (1,011)(55) (1,388)
Residential real estate(440) (108) (831) (1,659)(93) (250)
Consumer(11) (33) (35) (83)(5) (10)
Total recoveries(1,693) (2,767) (5,251) (8,177)(1,083) (2,233)
Loans charged-off:          
Commercial and industrial4,610
 2,921
 10,904
 6,166
2,124
 3,517
Commercial real estate
 175
 233
 1,994

 
Construction and land development
 
 1
 

 
Residential real estate46
 
 1,038
 447
188
 107
Consumer109
 61
 114
 103
1
 
Total charged-off4,765
 3,157
 12,290
 8,710
2,313
 3,624
Net charge-offs3,072
 390
 7,039
 533
1,230
 1,391
Balance at end of period$150,011
 $136,421
 $150,011
 $136,421
$154,987
 $144,659
Net charge-offs to average loans outstanding0.08% 0.01% 0.06% 0.01%0.03% 0.04%
Allowance for credit losses to gross loans0.90
 0.94
    0.86
 0.93
Allowance for credit losses to gross organic loans0.97
 1.06
    0.90
 1.02

The following table summarizes the allocation of the allowance for credit losses by loan type. However, the allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. 
 Commercial and Industrial Commercial Real Estate Construction and Land Development Residential Real Estate Consumer Total Commercial and Industrial Commercial Real Estate Construction and Land Development Residential Real Estate Consumer Total
 (dollars in thousands) (dollars in thousands)
September 30, 2018            
March 31, 2019            
Allowance for credit losses $86,648
 $31,585
 $22,656
 $8,075
 $1,047
 $150,011
 $77,254
 $37,867
 $26,083
 $13,006
 $777
 $154,987
Percent of total allowance for credit losses 57.8% 21.1% 15.0% 5.4% 0.7% 100.0% 49.9% 24.4% 16.8% 8.4% 0.5% 100.0%
Percent of loan type to total HFI loans 44.8
 37.3
 12.6
 4.9
 0.4
 100.0
December 31, 2017            
Percent of loan type to total loans 42.6
 36.4
 12.6
 8.1
 0.3
 100.0
December 31, 2018            
Allowance for credit losses $82,527
 $31,648
 $19,599
 $5,500
 $776
 $140,050
 $83,118
 $34,829
 $22,513
 $11,276
 $981
 $152,717
Percent of total allowance for credit losses 58.9% 22.6% 14.0% 3.9% 0.6% 100.0% 54.4% 22.8% 14.8% 7.4% 0.6% 100.0%
Percent of loan type to total HFI loans 45.2
 40.8
 10.9
 2.8
 0.3
 100.0
Percent of loan type to total loans 43.8
 36.9
 12.1
 6.8
 0.4
 100.0
Problem Loans
The Company classifies loans consistent with federal banking regulations using a nine category grading system. These loan grades are described in further detail in "Item 1. Business” of the Company's Annual Report for the year ended December 31, 2017.2018. The following table presents information regarding potential and actual problem loans, consisting of loans graded Special Mention, Substandard, Doubtful, and Loss, but still performing, and excluding acquired loans: 
 September 30, 2018 March 31, 2019
 Number of Loans Loan Balance Percent of Loan Balance Percent of Total HFI Loan Balance Number of Loans Loan Balance Percent of Loan Balance Percent of Total Loans
 (dollars in thousands) (dollars in thousands)
Commercial and industrial 135
 $133,555
 60.86% 0.80% 94
 $77,909
 40.27% 0.43%
Commercial real estate 44
 73,415
 33.46
 0.44
 50
 108,166
 55.92
 0.60
Construction and land development 5
 7,808
 3.56
 0.05
 5
 6,921
 3.58
 0.04
Residential real estate 4
 4,363
 1.99
 0.03
 2
 412
 0.21
 0.00
Consumer 2
 281
 0.13
 0.00
 2
 40
 0.02
 0.00
Total 190
 $219,422
 100.00% 1.32% 153
 $193,448
 100.00% 1.07%
 
 December 31, 2017 December 31, 2018
 Number of Loans Loan Balance Percent of Loan Balance Percent of Total HFI Loan Balance Number of Loans Loan Balance Percent of Loan Balance Percent of Total Loans
 (dollars in thousands) (dollars in thousands)
Commercial and industrial 166
 $127,015
 51.63% 0.84% 107
 $125,585
 62.37% 0.71%
Commercial real estate 48
 90,653
 36.85
 0.60
 42
 71,116
 35.32
 0.40
Construction and land development 5
 18,471
 7.51
 0.12
 3
 4,040
 2.01
 0.02
Residential real estate 3
 8,971
 3.65
 0.06
 1
 527
 0.26
 0.00
Consumer 10
 880
 0.36
 0.01
 2
 75
 0.04
 0.00
Total 232
 $245,990
 100.00% 1.63% 155
 $201,343
 100.00% 1.13%


Other Assets Acquired Through Foreclosure
The following table represents the changes in other assets acquired through foreclosure: 
 Three Months Ended September 30, Three Months Ended March 31,
 2018 2019
 Gross Balance Valuation Allowance Net Balance Gross Balance Valuation Allowance Net Balance
 (in thousands) (in thousands)
Balance, beginning of period $31,145
 $(3,604) $27,541
 $19,979
 $(2,055) $17,924
Proceeds from sale of other real estate owned and repossessed assets, net (1,093) 401
 (692)
Charitable contribution (1) (6,895) 
 (6,895)
Charitable contribution (232) 114
 (118)
Valuation adjustments, net 
 
 
 
 (99) (99)
Gains (losses), net (2) 74
 
 74
Balance, end of period $23,231
 $(3,203) $20,028
 $19,747
 $(2,040) $17,707
            
 2017 2018
Balance, beginning of period $35,037
 $(4,049) $30,988
 $32,552
 $(4,012) $28,540
Transfers to other assets acquired through foreclosure, net 430
 
 430
 5,744
 
 5,744
Proceeds from sale of other real estate owned and repossessed assets, net (2,491) 330
 (2,161) (5,294) 9
 (5,285)
Valuation adjustments, net 
 (343) (343) 
 (47) (47)
Gains (losses), net (2) 78
 
 78
Gains (losses), net (1) 1,242
 
 1,242
Balance, end of period $33,054
 $(4,062) $28,992
 $34,244
 $(4,050) $30,194
  Nine Months Ended September 30,
  2018
  Gross Balance Valuation Allowance Net Balance
  (in thousands)
Balance, beginning of period $32,552
 $(4,012) $28,540
Transfers to other assets acquired through foreclosure, net 5,744
 
 5,744
Proceeds from sale of other real estate owned and repossessed assets, net (9,634) 841
 (8,793)
Charitable contribution (1) (6,895) 
 (6,895)
Valuation adjustments, net 
 (32) (32)
Gains (losses), net (3) 1,464
 
 1,464
Balance, end of period $23,231
 $(3,203) $20,028
       
  2017
Balance, beginning of period $54,138
 $(6,323) $47,815
Transfers to other assets acquired through foreclosure, net 1,812
 
 1,812
Proceeds from sale of other real estate owned and repossessed assets, net (23,129) 2,381
 (20,748)
Valuation adjustments, net 
 (120) (120)
Gains (losses), net (3) 233
 
 233
Balance, end of period $33,054
 $(4,062) $28,992

(1)Represents a contribution of OREO property to the Company's charitable foundation. See Note 16. Related Party Transactions for additional information.
(2)
There were nozero and $1.0 millioninnet gains related to initial transfers to other assets during the three months ended September 30,March 31, 2019 and 2018, and 2017, respectively.
(3)There were $1.0 million and $0.1 million in net gains related to initial transfers to other assets during the nine months ended September 30, 2018 and 2017, respectively.
Other assets acquired through foreclosure consist primarily of properties acquired as a result of, or in-lieu-of, foreclosure. OREO and other repossessed property are reported at the lower of carrying value or fair value less estimated costs to sell the property. Costs relating to the development or improvement of the assets are capitalized and costs relating to holding the assets are charged to expense. The Company has $20.0$17.7 million, $28.5$17.9 million, $29.0and $30.2 million of such assets at September 30, 2018,March 31, 2019, December 31, 2017,2018, and September 30, 2017,March 31, 2018, respectively.

At September 30,March 31, 2019 and 2018, and 2017, the majority of the Company’s repossessed assets consisted of properties located in Nevada. The Company held 1210 properties at September 30, 2018,March 31, 2019, compared to 1911 at December 31, 2017,2018, and 2018 at September 30, 2017.March 31, 2018.
Goodwill and Other Intangible Assets
Goodwill represents the excess consideration paid for net assets acquired in a business combination over their fair value. Goodwill and other intangible assets acquired in a business combination that are determined to have an indefinite useful life are not subject to amortization, but are subsequently evaluated for impairment at least annually. The Company has goodwill of $289.9 million and intangible assets totaling $9.7$8.9 million at September 30, 2018,March 31, 2019, which have been allocated to the Nevada, Northern California, Technology & Innovation, and HFF operating segments.
The Company performs its annual goodwill and intangibles impairment tests as of October 1 each year, or more often if events or circumstances indicate that the carrying value may not be recoverable. During the three and nine months ended September 30,March 31, 2019 and 2018, and 2017, there were no events or circumstances that indicated an interim impairment test of goodwill or other intangible assets was necessary.
Deferred Tax Assets
As of September 30, 2018,March 31, 2019, the net deferred tax asset was $43.5$22.3 million, an increasea decrease of $37.7$9.7 million from December 31, 2017.2018. This overall increasedecrease in the net deferred tax asset was primarily the result of the deferral of WAB's dividend from the real estate investment trust from 2017 to 2018 and decreasesan increase in the fair market value of AFS securities, which were not fully offset by the utilization of NOL and credit carryovers.securities.
At September 30, 2018March 31, 2019 and December 31, 2017,2018, the Company had noa $2.4 million deferred tax valuation allowance.allowance related to net capital loss carryovers.

Deposits
Deposits are the primary source for funding the Company's asset growth. Total deposits increased to $18.91$20.21 billion at September 30, 2018,March 31, 2019, from $16.97$19.18 billion at December 31, 2017,2018, an increase of $1.94$1.03 billion, or 11.4%5.4%. The increase in deposits is attributable to an increase across allmost deposit types, with the largest increases in savings and money market deposits of $728.1$467.6 million, time deposits of $396.3 million, and non-interest bearing deposits of $580.8$223.2 million from December 31, 2017.2018, partially offset by a decrease in interest-bearing deposits of $55.9 million.
At September 30, 2018March 31, 2019 and December 31, 2017,2018, the Company also has $395.0$710.3 million and $67.3$718.2 million, respectively, of wholesale brokered deposits. In addition, non-interest bearing deposits for which the Company provides account holders with earnings credits totaled $2.10$2.79 billion and $1.85$2.29 billion at September 30, 2018March 31, 2019 and December 31, 2017,2018, respectively. The Company incurred $4.6$5.5 million and $2.6$2.7 million in deposit related costs during the three months ended September 30,March 31, 2019 and 2018, and 2017, and $11.2 million and $6.0 million in deposit related costs during the nine months ended September 30, 2018 and 2017, respectively.
The average balances and weighted average rates paid on deposits are presented below:
  Three Months Ended September 30,
  2018 2017
  Average Balance Rate Average Balance Rate
  (dollars in thousands)
Interest-bearing transaction accounts $1,938,180
 0.67% $1,476,506
 0.29%
Savings and money market accounts 6,580,274
 0.91
 6,282,405
 0.45
Time certificates of deposit 1,863,747
 1.53
 1,585,690
 0.82
Total interest-bearing deposits 10,382,201
 0.97
 9,344,601
 0.49
Non-interest-bearing demand deposits 7,910,305
 
 7,174,532
 
Total deposits $18,292,506
 0.55% $16,519,133
 0.28%

 Nine Months Ended September 30, Three Months Ended March 31,
 2018 2017 2019 2018
 Average Balance Rate Average Balance Rate Average Balance Rate Average Balance Rate
 (dollars in thousands) (dollars in thousands)
Interest-bearing transaction accounts $1,806,921
 0.52% $1,468,163
 0.26% $2,495,848
 0.91% $1,654,720
 0.34%
Savings and money market accounts 6,312,371
 0.76
 6,169,860
 0.39
 7,446,639
 1.20
 6,226,611
 0.58
Time certificates of deposit 1,720,537
 1.25
 1,549,212
 0.72
 1,817,787
 1.83
 1,579,940
 1.00
Total interest-bearing deposits 9,839,829
 0.80
 9,187,235
 0.43
 11,760,274
 1.23
 9,461,271
 0.61
Non-interest-bearing demand deposits 7,679,090
 
 6,548,351
 
 7,555,584
 
 7,510,614
 
Total deposits $17,518,919
 0.45% $15,735,586
 0.25% $19,315,858
 0.75% $16,971,885
 0.34%
Other Borrowings
The Company from time to time utilizes short-term borrowed funds to support short-term liquidity needs generally created by increased loan demand. The majority of these short-term borrowed funds consist of advances from the FHLB and customer repurchase agreements. The Company’s borrowing capacity with the FHLB is determined based on collateral pledged, generally consisting of securities and loans. In addition, the Company has borrowing capacity from other sources, collateralized by securities, including securities sold under agreements to repurchase, which are reflected at the amount of cash received in connection with the transaction, and may require additional collateral based on the fair value of the underlying securities. At September 30, 2018,March 31, 2019, total short-term borrowed funds consist of customer repurchase agreements of $21.0$15.1 million. At December 31, 2017,2018, total short-term borrowed funds consisted of federal funds purchased of $256.0 million, FHLB overnight advances of $235.0 million, and customer repurchase agreements of $26.0 million and FHLB advances of $390.0$22.4 million.
As of September 30, 2018March 31, 2019 and December 31, 2017,2018, the Company did not have any borrowings classified as long-term.
Qualifying Debt
Qualifying debt consists of subordinated debt and junior subordinated debt, inclusive of issuance costs and fair market value adjustments. At September 30, 2018,March 31, 2019, the carrying value of qualifying debt was $359.1$374.0 million, compared to $376.9$360.5 million at December 31, 2017.2018.



Capital Resources
The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements could trigger certain mandatory or discretionary actions that, if undertaken, could have a direct material effect on the Company’s business and financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities, and certain off-balance sheet items (discussed in "Note 12.13. Commitments and Contingencies" to the Unaudited Consolidated Financial Statements) as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.
The capital framework under Basel III became effective for the Company on January 1, 2015. Under the Basel III final rules, minimum requirements have increased for both the quantity and quality of capital held by the Company. The capital conservation buffer was established, and began being phased in on January 1, 2016 at 0.625% of risk-weighted assets and will increaseincreased each subsequent year by an additional 0.625% until reaching its final level of 2.5% on January 1, 2019. Strict eligibility requirements for regulatory capital instruments have been implemented under the final rules and the final rules also revise the definitions and calculations of Tier 1 capital, total capital, and risk-weighted assets.
As of September 30, 2018March 31, 2019 and December 31, 2017,2018, the Company and the Bank exceeded the capital levels necessary to be classified as well-capitalized, as defined by the banking agencies. The actual capital amounts and ratios for the Company and the Bank are presented in the following tables as of the periods indicated:
 Total Capital Tier 1 Capital Risk-Weighted Assets Tangible Average Assets Total Capital Ratio Tier 1 Capital Ratio Tier 1 Leverage Ratio Common Equity
Tier 1
 Total Capital Tier 1 Capital Risk-Weighted Assets Tangible Average Assets Total Capital Ratio Tier 1 Capital Ratio Tier 1 Leverage Ratio Common Equity
Tier 1
 (dollars in thousands) (dollars in thousands)
September 30, 2018                
March 31, 2019                
WAL $2,795,125
 $2,338,346
 $20,690,767
 $21,286,259
 13.5% 11.3% 11.0% 10.9% $2,980,809
 $2,511,695
 $22,610,882
 $22,867,069
 13.2% 11.1% 11.0% 10.7%
WAB 2,600,646
 2,293,018
 20,728,621
 21,316,035
 12.5
 11.1
 10.8
 11.1
 2,708,654
 2,394,443
 22,666,493
 22,901,348
 12.0
 10.6
 10.5
 10.6
Well-capitalized ratios         10.0
 8.0
 5.0
 6.5
         10.0
 8.0
 5.0
 6.5
Minimum capital ratios         8.0
 6.0
 4.0
 4.5
         8.0
 6.0
 4.0
 4.5
                                
December 31, 2017                
December 31, 2018                
WAL $2,460,988
 $2,013,744
 $18,569,608
 $19,624,517
 13.3% 10.8% 10.3% 10.4% $2,897,356
 $2,431,320
 $21,983,976
 $22,204,799
 13.2% 11.1% 10.9% 10.7%
WAB 2,299,919
 2,003,745
 18,664,200
 19,541,990
 12.3
 10.7
 10.3
 10.7
 2,628,650
 2,317,745
 22,040,765
 22,209,700
 11.9
 1.5
 10.4
 10.5
Well-capitalized ratios         10.0
 8.0
 5.0
 6.5
         10.0
 8.0
 5.0
 6.5
Minimum capital ratios         8.0
 6.0
 4.0
 4.5
         8.0
 6.0
 4.0
 4.5



Critical Accounting Policies
Critical accounting policies are defined as those that are reflective of significant judgments and uncertainties and could potentially result in materially different results under different assumptions and conditions. The critical accounting policies upon which the Company's financial condition and results of operations depend, and which involve the most complex subjective decisions or assessments, are included in the discussion entitled "Critical Accounting Policies" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations," in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2017,2018, and all amendments thereto, as filed with the SEC. There were no material changes to the critical accounting policies disclosed in the Annual Report on Form 10-K.

Liquidity
Liquidity is the ongoing ability to accommodate liability maturities and deposit withdrawals, fund asset growth and business operations, and meet contractual obligations through unconstrained access to funding at reasonable market rates. Liquidity management involves forecasting funding requirements and maintaining sufficient capacity to meet the needs and accommodate fluctuations in asset and liability levels due to changes in the Company's business operations or unanticipated events.
The ability to have readily available funds sufficient to repay fully maturing liabilities is of primary importance to depositors, creditors, and regulators. The Company's liquidity, represented by cash and amounts due from banks, federal funds sold, and non-pledged marketable securities, is a result of the Company's operating, investing, and financing activities and related cash flows. In order to ensure funds are available when necessary, on at least a quarterly basis, the Company projects the amount of funds that will be required over a twelve-month period and it also strives to maintain relationships with a diversified customer base. Liquidity requirements can also be met through short-term borrowings or the disposition of short-term assets.
The following table presents the available and outstanding balances on the Company's lines of credit:
  September 30, 2018
  Available
Balance
 Outstanding Balance
  (in millions)
Unsecured fed funds credit lines at correspondent banks $261.0
 $
Other lines with correspondent banks:    
Secured other lines with correspondent banks 
 
Unsecured other lines with correspondent banks 45.0
 
Total other lines with correspondent banks $306.0
 $
  March 31, 2019
  Available
Balance
 Outstanding Balance
  (in millions)
Unsecured fed funds credit lines at correspondent banks 
 
Committed amounts $261.0
 $
Uncommitted amounts 694.0
 
Total other lines with correspondent banks $955.0
 $
In addition to lines of credit, the Company has borrowing capacity with the FHLB and FRB from pledged loans and securities. The borrowing capacity, outstanding borrowings, and available credit as of September 30, 2018March 31, 2019 are presented in the following table:
 September 30, 2018 March 31, 2019
 (in millions) (in millions)
FHLB:    
Borrowing capacity $2,957.8
 $3,150.1
Outstanding borrowings 
 
Letters of credit 120.5
 181.0
Total available credit $2,837.3
 $2,969.1
    
FRB:    
Borrowing capacity $1,400.6
 $1,319.8
Outstanding borrowings 
 
Total available credit $1,400.6
 $1,319.8
The Company has a formal liquidity policy and, in the opinion of management, its liquid assets are considered adequate to meet cash flow needs for loan funding and deposit cash withdrawals for the next 90-120 days. At September 30, 2018,March 31, 2019, there was $3.10$3.11 billion in liquid assets, comprised of $700.6$770.2 million in cash, cash equivalents, and federal funds sold and $2.40$2.34 billion in

unpledged marketable securities. At December 31, 2017,2018, the Company maintained $2.89$3.03 billion in liquid assets, comprised of $416.8$498.6 million of cash, cash equivalents, and money market investments, and $2.48$2.53 billion of unpledged marketable securities.

The Parent maintains liquidity that would be sufficient to fund its operations and certain non-bank affiliate operations for an extended period should funding from normal sources be disrupted. Since deposits are taken by WAB and not by the Parent, Parent liquidity is not dependent on the Bank's deposit balances. In the Company's analysis of Parent liquidity, it is assumed that the Parent is unable to generate funds from additional debt or equity issuances, receives no dividend income from subsidiaries and does not pay dividends to stockholders, while continuing to make non-discretionary payments needed to maintain operations and repayment of contractual principal and interest payments owed by the Parent and affiliated companies. Under this scenario, the amount of time the Parent and its non-bank subsidiary can operate and meet all obligations before the current liquid assets are exhausted is considered as part of the Parent liquidity analysis. Management believes the Parent maintains adequate liquidity capacity to operate without additional funding from new sources for over twelve months.
WAB maintains sufficient funding capacity to address large increases in funding requirements, such as deposit outflows. This capacity is comprised of liquidity derived from a reduction in asset levels and various secured funding sources. On a long-term basis, the Company’s liquidity will be met by changing the relative distribution of its asset portfolios (for example, by reducing investment or loan volumes, or selling or encumbering assets). Further, the Company can increase liquidity by soliciting higher levels of deposit accounts through promotional activities and/or borrowing from correspondent banks, the FHLB of San Francisco, and the FRB. At September 30, 2018,March 31, 2019, the Company's long-term liquidity needs primarily relate to funds required to support loan originations, commitments, and deposit withdrawals, which can be met by cash flows from investment payments and maturities, and investment sales, if necessary.
The Company’s liquidity is comprised of three primary classifications: 1) cash flows provided by operating activities; 2) cash flows used in investing activities; and 3) cash flows provided by financing activities. Net cash provided by or used in operating activities consists primarily of net income, adjusted for changes in certain other asset and liability accounts and certain non-cash income and expense items, such as the provision for credit losses, investment and other amortization and depreciation. For the ninethree months ended September 30,March 31, 2019 and 2018, and 2017, net cash provided by operating activities was $396.3$151.3 million and $271.1$88.3 million, respectively.
The Company's primary investing activities are the origination of real estate and commercial loans, the collection of repayments of these loans, and the purchase and sale of securities. The Company's net cash provided by and used in investing activities has been primarily influenced by its loan and securities activities. The net increase in loans for the ninethree months ended September 30,March 31, 2019 and 2018 was $385.5 million and 2017 was $1.59 billion and $1.18 billion,$367.4 million, respectively. There was a net decrease in investment securities for the ninethree months ended September 30,March 31, 2019 and 2018 of $17.6$63.4 million compared to a net increase of $965.3and $29.7 million, for the nine months ended September 30, 2017.respectively.
Net cash provided by financing activities has been impacted significantly by increased deposit levels. During the ninethree months ended September 30,March 31, 2019 and 2018, and 2017, net deposits increased $1.94$1.03 billion and $2.35 billion,$382.0 million, respectively.
Fluctuations in core deposit levels may increase the Company's need for liquidity as certificates of deposit mature or are withdrawn before maturity, and as non-maturity deposits, such as checking and savings account balances, are withdrawn. Additionally, the Company is exposed to the risk that customers with large deposit balances will withdraw all or a portion of such deposits, due in part to the FDIC limitations on the amount of insurance coverage provided to depositors. To mitigate the uninsured deposit risk, the Company participates in the CDARS and ICS programs, which allow an individual customer to invest up to $50.0 million and $110.0 million, respectively, through one participating financial institution or, a combined total of $150.0 million per individual customer, with the entire amount being covered by FDIC insurance. As of September 30, 2018,March 31, 2019, the Company has $335.5$323.6 million of CDARS and $689.0$660.9 million of ICS deposits.
As of September 30, 2018,March 31, 2019, the Company has $395.0$710.3 million of wholesale brokered deposits outstanding. Brokered deposits are generally considered to be deposits that have been received from a third party who is engaged in the business of placing deposits on behalf of others. A traditional deposit broker will direct deposits to the banking institution offering the highest interest rate available. Federal banking laws and regulations place restrictions on depository institutions regarding brokered deposits because of the general concern that these deposits are not relationship based and are at a greater risk of being withdrawn and placed on deposit at another institution offering a higher interest rate, thus posing liquidity risk for institutions that gather brokered deposits in significant amounts.
Federal and state banking regulations place certain restrictions on dividends paid. The total amount of dividends which may be paid at any date is generally limited to the retained earnings of the bank. Dividends paid by WAB to the Parent would be prohibited if the effect thereof would cause the Bank’s capital to be reduced below applicable minimum capital requirements. During the three months ended September 30, 2018,March 31, 2019, WAB paid dividends to the Parent of $40.0 million. Subsequent to March 31, 2019, WAB paid dividends to the Parent of $30.0 million. During the nine months ended September 30, 2018, the Parent contributed to $1.1 million to WAB and WAB and LVSP paid dividends to the

Parent of $50.0 million and $2.1 million, respectively. Subsequent to September 30, 2018, WAB paid dividends to the Parent of $30.0 million.
Recent accounting pronouncements
See "Note 1. Summary of Significant Accounting Policies," of the Notes to Unaudited Consolidated Financial Statements contained in Item 1. Financial Statements for information on recent and recently adopted accounting pronouncements and their expected impact, if any, on the Company's Consolidated Financial Statements.
Supervision and Regulation
Recent Regulatory Development
On May 24, 2018, the President signed into law the EGRRCPA which, among other things, amended certain provisions of the Dodd-Frank Act. The EGRRCPA provides limited regulatory relief to certain financial institutions while preserving the existing framework under which U.S. financial institutions are regulated. Together with the interagency statement regarding the impact of the EGRRCPA released by the FRB, the FDIC and the OCC on July 6, 2018, the EGRRCPA relieves the Company from the requirement to conduct annual company-run stress testing for the Company and the Bank. In addition to amending the Dodd Frank Act, the EGRRCPA also includes certain additional banking-related provisions, consumer protection provisions and securities law-related provisions. The Company expects to continue to evaluate the potential impact of the Act as it is further implemented by the regulators.


Item 3.Quantitative and Qualitative Disclosures about Market Risk.
Market risk is the risk of loss in a financial instrument arising from adverse changes in market prices and rates, foreign currency exchange rates, commodity prices, and equity prices. The Company's market risk arises primarily from interest rate risk inherent in its lending, investing, and deposit taking activities. To that end, management actively monitors and manages the Company's interest rate risk exposure. The Company generally manages its interest rate sensitivity by evaluating re-pricing opportunities on its earning assets to those on its funding liabilities.
Management uses various asset/liability strategies to manage the re-pricing characteristics of the Company's assets and liabilities, all of which are designed to ensure that exposure to interest rate fluctuations is limited to within the Company's guidelines of acceptable levels of risk-taking. Hedging strategies, including the terms and pricing of loans and deposits and management of the deployment of its securities, are used to reduce mismatches in interest rate re-pricing opportunities of portfolio assets and their funding sources.
Interest rate risk is addressed by the ALCO, which includes members of executive management, finance, and operations. ALCO monitors interest rate risk by analyzing the potential impact on the net EVE and net interest income from potential changes in interest rates and considers the impact of alternative strategies or changes in balance sheet structure. The Company manages its balance sheet in part to maintain the potential impact on EVE and net interest income within acceptable ranges despite changes in interest rates.
The Company's exposure to interest rate risk is reviewed at least quarterly by the ALCO. Interest rate risk exposure is measured using interest rate sensitivity analysis to determine its change in both EVE and net interest income in the event of hypothetical changes in interest rates. If potential changes to EVE and net interest income resulting from hypothetical interest rate changes are not within the limits established by the BOD, the BOD may direct management to adjust the asset and liability mix to bring interest rate risk within Board-approved limits.
Net Interest Income Simulation. In order to measure interest rate risk at September 30, 2018,March 31, 2019, the Company uses a simulation model to project changes in net interest income that result from forecasted changes in interest rates. This analysis calculates the difference between a baseline net interest income forecast using current yield curves that do not take into consideration any future anticipated rate hikes, compared to forecasted net income resulting from an immediate parallel shift in rates upward or downward, along with other scenarios directed by ALCO. The income simulation model includes various assumptions regarding the re-pricing relationships for each of the Company's products. Many of the Company's assets are floating rate loans, which are assumed to re-price immediately and, proportional to the change in market rates, depending on their contracted index, including the impact of caps or floors. Some loans and investments contain contractual prepayment features (embedded options) and, accordingly, the simulation model incorporates prepayment assumptions. The Company's non-term deposit products re-price more slowly, usually changing less than the change in market rates and at the Company's discretion.
This analysis indicates the impact of changes in net interest income for the given set of rate changes and assumptions. It assumes the balance sheet remains static and that its structure does not change over the course of the year. It does not account for all factors that could impact the Company's results, including changes by management to mitigate interest rate changes or secondary factors, such as changes to the Company's credit risk profile as interest rates change.
Furthermore, loan prepayment rate estimates and spread relationships change regularly. Interest rate changes create changes in actual loan prepayment speeds that will differ from the market estimates incorporated in this analysis. Changes that vary significantly from the modeled assumptions may have significant effects on the Company's actual net interest income.

This simulation model assesses the changes in net interest income that would occur in response to an instantaneous and sustained increase or decrease (shock) in market interest rates over a twelve-month period. At September 30, 2018,March 31, 2019, the Company's net interest income exposure for the next twelve months related to these hypothetical changes in market interest rates was within the Company's current guidelines for all up-rate scenarios. The Company’s net interest income exposure in the down-rate scenario was not within the Company’s guideline of (5.0)%. The breach is the result of the increase in short-term interest rates over the past two years, resulting from fed funds rate increases. These rate increases have improved yields on floating-rate assets, while the Company’s deposit costs have not increased materially; thus in a current down-rate scenario, the Company will not see the full impact of a rate decrease on its deposit costs while it will see that impact on floating-rate assets. The Board and ALCO have accepted the breach and believe that as deposit costs increase over time, interest expense will be more sensitive in a down-rate scenario, dampening the Company’s overall net interest income sensitivity.
Sensitivity of Net Interest Income
 Interest Rate Scenario (change in basis points from Base) Interest Rate Scenario (change in basis points from Base)
 Down 100 Base Up 100 Up 200 Up 300 Up 400 Down 100 Base Up 100 Up 200 Up 300 Up 400
 (in thousands) (in thousands)
Interest Income $1,047,762
 $1,151,814
 $1,266,796
 $1,384,087
 $1,502,000
 $1,620,583
 $1,095,269
 $1,209,475
 $1,334,788
 $1,458,891
 $1,583,245
 $1,708,597
Interest Expense 99,317
 141,292
 186,936
 232,574
 278,205
 323,830
 143,884
 191,537
 243,275
 295,011
 346,741
 398,465
Net Interest Income $948,445
 $1,010,522
 $1,079,860
 $1,151,513
 $1,223,795
 $1,296,753
 $951,385
 $1,017,938
 $1,091,513
 $1,163,880
 $1,236,504
 $1,310,132
% Change (6.1)%   6.9% 14.0% 21.1% 28.3% (6.5)%   7.2% 14.3% 21.5% 28.7%
Economic Value of Equity. The Company measures the impact of market interest rate changes on the NPV of estimated cash flows from its assets, liabilities, and off-balance sheet items, defined as EVE, using a simulation model. This simulation model assesses the changes in the market value of interest rate sensitive financial instruments that would occur in response to an instantaneous and sustained increase or decrease (shock) in market interest rates.
At September 30, 2018,March 31, 2019, the Company's EVE exposure related to these hypothetical changes in market interest rates was within the Company's current guidelines. The following table shows the Company's projected change in EVE for this set of rate shocks at September 30, 2018:March 31, 2019:
Economic Value of Equity 
 Interest Rate Scenario (change in basis points from Base) Interest Rate Scenario (change in basis points from Base)
 Down 100 Base Up 100 Up 200 Up 300 Up 400 Down 100 Base Up 100 Up 200 Up 300 Up 400
 (in thousands) (in thousands)
Assets $22,493,485
 $22,024,201
 $21,533,514
 $21,093,827
 $20,687,468
 $20,310,242
 $24,364,198
 $23,897,897
 $23,399,623
 $22,921,308
 $22,486,388
 $22,063,822
Liabilities 18,040,521
 17,605,935
 17,259,400
 16,961,757
 16,701,599
 16,470,932
 19,585,436
 19,098,672
 18,708,135
 18,370,937
 18,076,868
 17,819,255
Net Present Value $4,452,964
 $4,418,266
 $4,274,114
 $4,132,070
 $3,985,869
 $3,839,310
 $4,778,762
 $4,799,225
 $4,691,488
 $4,550,371
 $4,409,520
 $4,244,567
% Change 0.8%   (3.3)% (6.5)% (9.8)% (13.1)% (0.4)%   (2.2)% (5.2)% (8.1)% (11.6)%
The computation of prospective effects of hypothetical interest rate changes are based on numerous assumptions, including relative levels of market interest rates, asset prepayments, and deposit decay, and should not be relied upon as indicative of actual results. Further, the computations do not contemplate any actions the Company may undertake in response to changes in interest rates. Actual amounts may differ from the projections set forth above should market conditions vary from the underlying assumptions.
Derivative Contracts. In the normal course of business, the Company uses derivative instruments to meet the needs of its customers and manage exposure to fluctuations in interest rates. The following table summarizes the aggregate notional amounts, market values, and terms of the Company’s derivative positions as of September 30, 2018March 31, 2019 and December 31, 2017:2018:
Outstanding Derivatives Positions
September 30, 2018 December 31, 2017
March 31, 2019March 31, 2019 December 31, 2018
NotionalNotional Net Value Weighted Average Term (Years) Notional Net Value Weighted Average Term (Years)Notional Net Value Weighted Average Term (Years) Notional Net Value Weighted Average Term (Years)
(dollars in thousands)
$1,021,105
 $29,995
 16.0
 $1,115,736
 $(51,629) 16.0
1,005,954
 $(47,141) 15.7
 $1,017,773
 $(42,477) 15.8

Item 4.Controls and Procedures.
Evaluation of Disclosure Controls
Based on their evaluation as of the end of the period covered by this Quarterly Report on Form 10-Q, the CEO and CFO have concluded that the disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act) are effective to ensure that information required to be disclosed by the Company in reports that it files or submits under the Exchange Act, as amended, is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms. Additionally, the Company's disclosure controls and procedures were also effective in ensuring that information required to be disclosed by the Company in the reports it files or is subject to under the Exchange Act is accumulated and communicated to the Company's management, including the CEO and CFO, to allow timely decisions regarding required disclosures.
Changes in Internal Control over Financial Reporting
There have not been any changes in the Company's internal control over financial reporting during the quarter ended September 30, 2018,March 31, 2019, which have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.
PART II. OTHER INFORMATION
Item 1.Legal Proceedings.
There are no material pending legal proceedings to which the Company is a party or to which any of its properties are subject. There are no material proceedings known to the Company to be contemplated by any governmental authority. From time to time, the Company is involved in a variety of litigation matters in the ordinary course of its business and anticipates that it will become involved in new litigation matters in the future.
Item 1A.Risk Factors.
There have not been any material changes to the risk factors previously disclosed in the Company's Annual Report on Form 10-K for the year ended December 31, 2017.2018.
Item 2.Unregistered Sales of Equity Securities and Use of Proceeds.
Issuer Purchases of Equity Securities
The following table provides information about the Company's purchases of equity securities that are registered by the Company pursuant to Section 12 of the Exchange Act for the periods indicated:
  (a) (b) ( c) (d)
  Total Number of Shares Purchased (1) Average Price Paid Per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs Approximate Dollar Value of Shares That May Yet be Purchased Under the Plans or Programs (2)
7/1/2018 through 7/31/2018 16,725
 $57.74
  
8/1/2018 through 8/31/2018 173
 57.12
  
9/1/2018 through 9/30/2018 1,504
 58.67
  
Total 18,402
 $57.81
  
  (a) (b) ( c) (d)
  Total Number of Shares Purchased (1)(2) Average Price Paid Per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2) Approximate Dollar Value of Shares That May Yet be Purchased Under the Plans or Programs
1/1/2019 through 1/31/2019 99,757
 $45.15
 
 214,339,618
2/1/2019 through 2/28/2019 
 
 
 214,339,618
3/1/2019 through 3/31/2019 1,014,165
 40.74
 940,915
 176,418,392
Total 1,113,922
 $41.13
 940,915
 176,418,392
(1)All sharesShares purchased during the period outside of the publicly announced repurchase program were transferred to the Company from employees in satisfaction of minimum tax withholding obligations associated with the vesting of restricted stock awards during the period.
(2)TheOn December 12, 2018, the Company has not announced that it had adopted a common stock repurchase plan relatingprogram, pursuant to which the Company is authorized to repurchase up to $250 million of its shares of common stock. The repurchase program will expire on December 31, 2019.
Item 5.Other Information
Not applicable.

Item 6.Exhibits
EXHIBITS
3.1
3.2
3.3 
   
3.23.4 
   
3.310.1* 
3.4
3.5
   
31.1* 
   
31.2* 
   
32** 
   
101.INS* XBRL Instance Document.
   
101.SCH* XBRL Taxonomy Extension Schema Document.
   
101.DEF* XBRL Taxonomy Extension Definition Linkbase Document.
   
101.CAL* XBRL Taxonomy Extension Calculation Linkbase Document.
   
101.LAB* XBRL Taxonomy Extension Label Linkbase Document.
   
101.PRE* XBRL Taxonomy Extension Presentation Linkbase Document.
*    Filed herewith.
**Furnished herewith.
±Management contract or compensatory arrangement.


SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
 
  WESTERN ALLIANCE BANCORPORATION
     
OctoberApril 30, 20182019 By: /s/ Kenneth A. Vecchione
    Kenneth A. Vecchione
    Chief Executive Officer
     
OctoberApril 30, 20182019 By: /s/ Dale Gibbons
    Dale Gibbons
    Executive Vice President andChairman
    Chief Financial Officer
     
OctoberApril 30, 20182019 By: /s/ J. Kelly Ardrey Jr.
    J. Kelly Ardrey Jr.
    Senior Vice President and
    Chief Accounting Officer



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