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Macquarie Infrastructure (MIC)

Document And Entity Information

Document And Entity Information - $ / shares9 Months Ended
Sep. 30, 2018Oct. 30, 2018Dec. 31, 2017
Document Information [Line Items]
Document Type10-Q
Amendment Flagfalse
Document Period End DateSep. 30,
2018
Document Fiscal Year Focus2018
Document Fiscal Period FocusQ3
Entity Registrant NameMacquarie Infrastructure Corp
Entity Central Index Key1289790
Current Fiscal Year End Date--12-31
Entity Filer CategoryLarge Accelerated Filer
Trading SymbolMIC
Entity Common Stock, Shares Outstanding85,640,118
Common Stock, Par or Stated Value Per Share $ 0.001 $ 0.001 $ 0.001

CONSOLIDATED CONDENSED BALANCE

CONSOLIDATED CONDENSED BALANCE SHEETS - USD ($) $ in ThousandsSep. 30, 2018Dec. 31, 2017
Current assets:
Cash and cash equivalents $ 50,162 $ 47,121
Restricted cash41,238 24,963
Accounts receivable, less allowance for doubtful accounts of $1,114 and $895, respectively130,777 158,152
Inventories30,807 36,955
Prepaid expenses9,329 14,685
Fair value of derivative instruments17,510 [1]11,965
Other current assets13,040 13,804
Assets held for sale[2]971,934 0
Total current assets1,264,797 307,645
Property, equipment, land and leasehold improvements, net3,753,291 [3]4,659,614
Investment in unconsolidated business9,296 9,526
Goodwill2,043,800 2,068,668
Intangible assets, net813,348 [4]914,098
Fair value of derivative instruments26,958 [1]24,455
Other noncurrent assets26,980 24,945
Total assets7,938,470 8,008,951
Current liabilities:
Due to Manager-related party4,474 5,577
Accounts payable54,628 60,585
Accrued expenses83,424 89,496
Current portion of long-term debt392,903 [5]50,835
Fair value of derivative instruments534 [1]1,710
Other current liabilities52,089 47,762
Liabilities held for sale[2]299,659 0
Total current liabilities887,711 255,965
Long-term debt, net of current portion3,009,008 [5]3,530,311
Deferred income taxes656,708 632,070
Fair value of derivative instruments1,174 [1]4,668
Tolling agreements - noncurrent0 52,595
Other noncurrent liabilities187,957 182,639
Total liabilities4,742,558 4,658,248
Commitments and contingencies
Stockholders’ equity:
Common stock ($0.001 par value; 500,000,000 authorized; 85,550,576 shares issued and outstanding at September 30, 2018 and 84,733,957 shares issued and outstanding at December 31, 2017)[6]86 85
Additional paid in capital1,585,328 1,840,033
Accumulated other comprehensive loss(32,085)(29,993)
Retained earnings1,480,471 1,343,567
Total stockholders’ equity3,033,800 3,153,692
Noncontrolling interests162,112 197,011
Total equity3,195,912 3,350,703
Total liabilities and equity $ 7,938,470 $ 8,008,951
[1]Fair value of derivative instruments excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.
[2]See Note 2, "Basis of Presentation", for further discussion on assets and liabilities held for sale.
[3]Property, equipment, land and leasehold improvements excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.
[4]Intangible assets excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.
[5]Excludes the current and long-term portion of debt related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.
[6]The Company is authorized to issue 100,000,000 shares of preferred stock, par value $0.001 per share. At September 30, 2018 and December 31, 2017, no preferred stock were issued or outstanding. The Company had 100 shares of special stock issued and outstanding to its Manager at September 30, 2018 and December 31, 2017.

CONSOLIDATED CONDENSED BALANC_2

CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($) $ in ThousandsSep. 30, 2018Dec. 31, 2017
Accounts receivable, allowance for doubtful accounts $ 1,114 $ 895
Preferred stock, par value per share $ 0.001 $ 0.001
Preferred stock, authorized100,000,000 100,000,000
Preferred stock, issued0 0
Preferred stock, outstanding0 0
Special stock, issued100 100
Special stock, outstanding100 100
Common stock, par value per share $ 0.001 $ 0.001
Shares, authorized500,000,000 500,000,000
Shares, issued85,550,576 84,733,957
Shares, outstanding85,550,576 84,733,957

CONSOLIDATED CONDENSED STATEMEN

CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Revenue
Service revenue $ 361,031 $ 358,220 $ 1,139,637 $ 1,067,069
Product revenue112,249 94,841 313,279 276,439
Total revenue473,280 453,061 1,452,916 1,343,508
Costs and expenses
Cost of services166,694 153,218 533,889 455,038
Cost of product sales47,823 35,669 148,372 123,143
Selling, general and administrative86,487 84,898 262,371 244,817
Fees to Manager-related party12,333 17,954 36,113 54,610
Goodwill impairment3,215 0 3,215 0 [1]
Depreciation56,924 58,009 179,368 172,753
Amortization of intangibles20,030 17,329 55,470 50,920 [1]
Total operating expenses393,506 367,077 1,218,798 1,101,281
Operating income79,774 85,984 234,118 242,227
Other income (expense)
Interest income113 54 304 129
Interest expense[2](32,616)(29,291)(81,693)(90,129)
Other (expense) income, net(18,011)4,973 (11,721)7,893
Net income before income taxes29,260 61,720 141,008 160,120
Provision for income taxes(7,884)(25,547)(36,558)(65,284)
Net income21,376 36,173 104,450 94,836 [1]
Less: net loss attributable to noncontrolling interests(328)(3,922)(32,454)(7,294)
Net income attributable to MIC $ 21,704 $ 40,095 $ 136,904 $ 102,130
Basic income per share attributable to MIC $ 0.25 $ 0.48 $ 1.61 $ 1.23
Weighted average number of shares outstanding: basic85,378,088 83,644,806 85,095,956 82,743,285
Diluted income per share attributable to MIC $ 0.25 $ 0.48 $ 1.61 $ 1.23
Weighted average number of shares outstanding: diluted85,398,566 87,916,538 85,109,213 82,752,800
Cash dividends declared per share $ 1 $ 1.42 $ 3 $ 4.12
[1]Conformed to current period presentation. See Note 2, "Basis of Presentation", for Recently Issued Accounting Standards adopted during the nine months ended September 30, 2018.
[2]Interest expense includes gains on derivative instruments of $4.8 million and $25.8 million for the quarter and nine months ended September 30, 2018, respectively. For the quarter and nine months ended September 30, 2017, interest expense includes losses on derivative instruments of $162,000 and $6.9 million, respectively.

CONSOLIDATED CONDENSED STATEM_2

CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Gain (Loss) on derivative instruments $ 7,424 $ 5,607 $ 29,261 $ (4,785)
Interest Expense [Member]
Gain (Loss) on derivative instruments $ 4,800 $ (162) $ 25,800 $ (6,900)

CONSOLIDATED CONDENSED STATEM_3

CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Net income $ 21,376 $ 36,173 $ 104,450 $ 94,836 [1]
Other comprehensive income (loss), net of taxes:
Translation adjustment[2]1,381 1,641 (2,092)2,738
Other comprehensive income (loss)1,381 1,641 (2,092)2,738
Comprehensive income22,757 37,814 102,358 97,574
Less: comprehensive loss attributable to noncontrolling interests(328)(3,922)(32,454)(7,294)
Comprehensive income attributable to MIC $ 23,085 $ 41,736 $ 134,812 $ 104,868
[1]Conformed to current period presentation. See Note 2, "Basis of Presentation", for Recently Issued Accounting Standards adopted during the nine months ended September 30, 2018.
[2]Translation adjustment is presented net of tax expense of $515,000 and tax benefit of $802,000 for the quarter and nine months ended September 30, 2018, respectively. For the quarter and nine months ended September 30, 2017, translation adjustment is presented net of tax expense of $1.1 million and $1.9 million, respectively.

CONSOLIDATED CONDENSED STATEM_4

CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Translation adjustment, taxes $ (515) $ (1,100) $ 802 $ (1,900)

CONSOLIDATED CONDENSED STATEM_5

CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands9 Months Ended
Sep. 30, 2018Sep. 30, 2017[1]
Operating activities
Net income $ 104,450 $ 94,836
Adjustments to reconcile net income to net cash provided by operating activities:
Non-cash goodwill impairment3,215 0
Depreciation and amortization of property and equipment179,368 172,753
Amortization of intangible assets55,470 50,920
Amortization of debt financing costs7,430 6,464
Amortization of debt discount2,710 2,377
Adjustments to derivative instruments(19,782)3,414
Fees to Manager-related party36,113 54,610
Deferred taxes25,899 56,791
Pension expense6,284 6,481
Other non-cash expense (income), net14,359 [2](2,651)[3]
Changes in other assets and liabilities, net of acquisitions/dispositions:
Accounts receivable6,200 (18,938)
Inventories(2,003)(4,563)
Prepaid expenses and other current assets2,605 (7,040)
Due to Manager-related party155 (178)
Accounts payable and accrued expenses4,896 (4,444)
Income taxes payable654 (1,223)
Other, net(14,970)(11,249)
Net cash provided by operating activities413,053 398,360
Investing activities
Acquisitions of businesses and investments, net of cash acquired(12,515)(208,377)
Purchases of property and equipment(159,037)(234,833)
Loan to project developer(17,800)(18,675)
Loan repayment from project developer16,561 6,604
Proceeds from sale of business, net of cash divested41,038 0
Other, net467 179
Net cash used in investing activities(131,286)(455,102)
Financing activities
Proceeds from long-term debt275,500 585,500
Payment of long-term debt(223,529)(200,722)
Proceeds from the issuance of shares0 5,699
Dividends paid to common stockholders(292,715)(332,867)
Contributions received from noncontrolling interests567 102
Distributions paid to noncontrolling interests(3,028)(2,962)
Offering and equity raise costs paid(35)(355)
Debt financing costs paid(2,874)(447)
Payment of capital lease obligations(87)(366)
Net cash (used in) provided by financing activities(246,201)53,582
Effect of exchange rate changes on cash and cash equivalents(442)449
Net change in cash, cash equivalents and restricted cash35,124 (2,711)
Cash, cash equivalents and restricted cash, beginning of period72,084 61,257
Cash, cash equivalents and restricted cash, end of period107,208 58,546
Non-cash investing and financing activities:
Accrued equity offering costs83 97
Accrued financing costs0 21
Accrued purchases of property and equipment23,801 33,184
Issuance of shares to Manager37,372 54,927
Issuance of shares to independent directors750 681
Issuance of shares for acquisition of business0 125,000
Conversion of convertible senior notes to shares6 17
Distributions payable to noncontrolling interests5 32
Taxes paid, net10,991 9,810
Interest paid $ 91,200 $ 82,108
[1]Conformed to current period presentation. See Note 2, "Basis of Presentation", for Recently Issued Accounting Standards adopted during the nine months ended September 30, 2018.
[2]Other non-cash expense (income), net, includes the write-down of the Company’s investment in the design-build mechanical contractor business for the nine months ended September 30, 2018.
[3]Other non-cash expense (income), net, includes the write-down of the Company’s investment in the design-build mechanical contractor business for the nine months ended September 30, 2018.

CONSOLIDATED CONDENSED STATEM_6

CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Additional Information) - USD ($) $ in ThousandsSep. 30, 2018Sep. 30, 2017
Cash and cash equivalents $ 50,162 $ 35,737
Restricted cash41,238 22,809
Total of cash, cash equivalents and restricted cash shown in the consolidated condensed statement of cash flows107,208 58,546 [1]
Asset-Held-For-Sale [Member]
Restricted cash[2] $ 15,808 $ 0
[1]Conformed to current period presentation. See Note 2, "Basis of Presentation", for Recently Issued Accounting Standards adopted during the nine months ended September 30, 2018.
[2]Represents restricted cash related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.

Organization and Description of

Organization and Description of Business9 Months Ended
Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business 1. Organization and Description of Business Macquarie Infrastructure Corporation (MIC) is a Delaware corporation formed on May 21, 2015. MIC’s predecessor, Macquarie Infrastructure Company LLC, was formed on April 13, 2004. Macquarie Infrastructure Corporation, both on an individual entity basis and together with its consolidated subsidiaries, is referred to in these financial statements as the “Company” or “MIC”. MIC is externally managed by Macquarie Infrastructure Management (USA) Inc. (the Manager), pursuant to the terms of a Management Services Agreement, that is subject to the oversight and supervision of the board of directors. The majority of the members of the Board of Directors, and each member of all Board Committees, is independent and has no affiliation with Macquarie. The Manager is a member of the Macquarie Group of companies comprising the Macquarie Group Limited and its subsidiaries and affiliates worldwide. Macquarie Group Limited is headquartered in Australia and is listed on the Australian Securities Exchange. The Company owns its businesses through its direct wholly-owned subsidiary MIC Ohana Corporation, the successor to Macquarie Infrastructure Company Inc. The Company owns and operates a diversified portfolio of businesses that provide services to other businesses, government agencies and individuals primarily in the U.S. The businesses it owns and operates are organized into four segments: • International-Matex Tank Terminals (IMTT): • Atlantic Aviation: • Contracted Power: • MIC Hawaii: Through October 12, 2018, the Company’s Contracted Power business also included a gas-fired facility. See Note 2, “Basis of Presentation”, for further information.

Basis of Presentation

Basis of Presentation9 Months Ended
Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation The unaudited consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X for interim financial information. Certain information or footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted, pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial reporting. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. The consolidated balance sheet at December 31, 2017 has been derived from audited financial statements but does not include all of the information and notes required by GAAP for complete financial statements. Certain reclassifications were made to the financial statements for the prior period to conform to current period presentation. The interim financial information contained herein should be read in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2017 included in the Company’s Annual Report on Form 10-K, as filed with the SEC on February 21, 2018. Operating results for the quarter and nine months ended September 30, 2018 are not necessarily indicative of the results that may be expected for the year ending December 31, 2018 or for any future interim periods. The preparation of unaudited consolidated condensed financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures related thereto at the date of the unaudited consolidated condensed financial statements and the reported amounts of revenue and expenses during the reporting period. Management evaluates these estimates and assumptions on an ongoing basis. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the unaudited interim consolidated condensed financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from estimates. The Company’s financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and variable-rate senior debt, are carried at cost, which approximates their fair value because of either the short-term maturity, or competitive interest rates assigned to these financial instruments. Assets and Liabilities Held for Sale — Bayonne Energy Center (BEC) During the quarter ended March 31, 2018, the Company announced that it was exploring the potential sale of a portion or all of Bayonne Energy Center (BEC), a business within the Contracted Power segment. On July 27, 2018, the Company entered into an agreement to sell 100% of BEC to NHIP II Bayonne Holdings LLC. At September 30, 2018, the Company classified $971.9 million as assets held for sale, of which approximately $845.0 million related to property, equipment, land and leasehold improvements, approximately $50.0 million related to intangible assets and approximately $20.0 million in goodwill, and $299.7 million as liabilities held for sale, of which $243.5 million related to total debt, on the consolidated condensed balance sheet. The sale of BEC will not qualify for discontinued operation presentation under ASC 205-20, Presentation of Financial Statements — Discontinued Operations. On October 12, 2018, the Company concluded the sale of BEC and received cash of $657.4 million, net of the assumption of the outstanding debt balance of $243.5 million by the buyer and subject to post-closing resulting in a preliminary pre-tax gain of approximately $5.0 million. Any such adjustments expected Investment Write-Down — Critchfield Pacific, Inc. (CPI) The Company continues to review its strategic options available, including with respect to certain other, smaller businesses in its portfolio. Consistent with this, and in light of the ongoing underperformance of the design-build mechanical contractor, Critchfield Pacific, Inc. (CPI) within the MIC Hawaii segment, the Company wrote-down its investment in the business in the third quarter of 2018. In total, the Company wrote-down approximately $30.0 million, which includes fixed assets and intangible assets of approximately $9.0 million, as well as reserving for certain contract related amounts recorded in other current liabilities and other expenses. Following the quarter end, the Company commenced a sale process for CPI and have reached an agreement to sell the business for a nominal sum in a transaction that is expected to close before the end of the year. Recently Issued Accounting Standards In August 2018, the FASB issued ASU No. 2018-14, Compensation — Retirement Benefits — Defined Benefit Plans — General (Subtopic 715-20): Disclosure Framework — Changes to the Disclosure Requirements for Defined Benefit Plans In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement at a minimum In February 2018, the FASB issued ASU No. 2018-02, Income Statement — Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (AOCI) On January 26, 2017, the FASB issued ASU No. 2017-04, Intangibles — Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment On January 5, 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business On November 17, 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash On February 25, 2016, FASB issued ASU No. 2016-02, Leases (Topic 842) Leases (Topic 842) Targeted Improvements The Company is in the process of completing its assessment of the overall impact and is currently planning for the adoption and implementation of ASU 2016-02. ASU 2016-02 will have a material impact on the Company’s consolidated balance sheets; however, the Company does not expect a material impact on its consolidated statements of operations. Further, the Company does not expect the standard to have a material impact on the accounting and reporting requirements for existing operating leases where the Company is the lessor as it expects to elect the practical expedient whereby the Company will not separate a qualifying contract into its lease and non-lease components. While the Company is continuing to assess potential impacts of the standard, it currently expects the most significant impact will be the recognition of ROU assets and lease liabilities for operating leases with original terms of over one year where the Company is the lessee. The Company will adopt ASU 2016-02 as of January 1, 2019 using the modified retrospective method as of the period of adoption rather than the earliest period presented. The Company is currently in the process of executing its implementation plan by installing a lease accounting technology system, gathering lease contracts and abstracting key financial data, and finalizing design of revisions needed to its processes and internal controls. The Company is also continuing to evaluate accounting policy options under the standard, including the use of the optional practical expedients, and evaluating the impact of implementing this guidance on its consolidated financial statements.

Implementation of ASU 2014-09

Implementation of ASU 2014-099 Months Ended
Sep. 30, 2018
Implementation of ASU 2014-09 [Abstract]
Implementation of ASU 2014-09 3. Implementation of ASU 2014-09 The Company recognizes revenue when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. The Company has revenue that is derived from long-term contracts and leases that can span several years. The Company accounts for revenue in accordance with ASC Topic 606, Revenue Leases Long-Term Contracted Revenue In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) • ASU 2015-14 (Issued August 2015) — Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date • ASU 2016-08 (Issued March 2016) — Principal versus Agent Consideration (Reporting Revenue Gross versus Net) • ASU 2016-10 (Issued April 2016) — Identifying Performance Obligations and Licensing • ASU 2016-12 (Issued May 2016) — Narrow-Scope Improvements and Practical Expedients • ASU 2016-20 (Issued December 2016) — Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers The Company adopted ASU 2014-09 during the first quarter of 2018 using the modified retrospective method. There was no adjustment to the beginning balance of retained earnings and the adoption of this ASU did not have a significant impact to the Company’s consolidated financial statements other than the additional required qualitative and quantitative disclosures. As part of the adoption, the Company has not elected to apply any practical expedients available under ASC Topic 606. IMTT Revenue from IMTT is generated from the following sources and recorded in service revenue. Lease . These are contracts with predominantly non-cancelable terms for access to and the use of storage capacity at the various terminals owned and operated by the business. At September 30, 2018, these contracts had a revenue weighted average remaining contract life of 2.0 years. These contracts generally require payments in exchange for the provision of storage capacity and product movement (thruput) throughout their term based on a fixed rate per barrel of capacity leased. A majority of the contracts include terms that adjust the fixed rate annually for inflation. These contracts are accounted for as operating leases and the related lease income is recognized in service revenue over the term of the contract based upon the rate specified. Revenue is recognized in accordance with ASC 840, Leases. Other terminal services Other Atlantic Aviation Revenue from Atlantic Aviation is recorded in service revenue. Services provided by Atlantic Aviation include: Fuel Hangar Other FBO services Other FBO services Contracted Power BEC revenue is derived from contracts that are accounted for as operating leases that do not have minimum lease payments. This revenue is recorded within product revenue as electricity is delivered. With respect to BEC’s contracted capacity, revenue is recognized as energy, capacity and ancillary services are sold to the off-taker under the third-party tolling agreements. The agreements are based on a fixed rate per megawatt (MW) of capacity and not subject to dispatch or utilization. A portion of the revenues under the tolling agreements are subject to annual price increases. Revenue under the tolling agreements is subject to availability of capacity (subject to a historical rolling average forced outage factor). Variable operating and major maintenance revenue under the tolling agreements is a function of net plant output and a negotiated rate, which is adjusted annually based on historical plant experience. With respect to BEC’s residual capacity, revenue is recognized as energy, capacity and ancillary services are sold into the New York Independent System Operator (NYISO) energy market. Revenue for such services is based on prevailing market rates at the time such services are sold. Volumes of energy and ancillary services sold are subject to BEC’s market based dispatch from NYISO. Owners of the wind and solar facilities sell substantially all of the electricity generated at a fixed price to primarily electric utility customers pursuant to long-term (typically 20 – 25 years) power purchase agreements (PPAs). Substantially all of the PPAs are accounted for as operating leases and have no minimum lease payments and all of the lease income under these leases is recorded within product revenue when the electricity is delivered. MIC Hawaii Revenue from Hawaii Gas is recorded in product revenue. Hawaii Gas recognizes revenue when products are delivered. Sales of gas to customers are billed on a monthly-cycle basis. Earned but unbilled revenue is accrued and included in accounts receivable and revenue based on the amount of gas that has been delivered but not billed to customers from the latest meter reading or billed delivery date to the end of an accounting period. The related costs are charged to expense. The other businesses within MIC Hawaii consist of primarily a design-build mechanical contractor focused on designing and constructing energy efficient building infrastructure and controlling interests in renewable and distributed power facilities including two facilities on Oahu. Revenue generated by the design-build mechanical contractor business is recognized from long-term construction contracts (commonly referred to as the percentage-of-completion method) and is recorded in service revenue. PPAs at the renewable facilities are accounted for as operating leases and the related lease income is recorded in product revenues when the electricity is delivered.

Income per Share

Income per Share9 Months Ended
Sep. 30, 2018
Earnings Per Share [Abstract]
Income per Share 4. Income per Share Quarter Ended Nine Months Ended 2018 2017 2018 2017 Numerator: Net income attributable to MIC $ 21,704 $ 40,095 $ 136,904 $ 102,130 Interest expense attributable to 2.875% Convertible Senior Notes due July 2019, net of taxes — 1,941 — — Diluted net income attributable to MIC $ 21,704 $ 42,036 $ 136,904 $ 102,130 Denominator: Weighted average number of shares outstanding: basic 85,378,088 83,644,806 85,095,956 82,743,285 Dilutive effect of restricted stock unit grants 20,478 9,435 13,257 9,515 Dilutive effect of 2.875% Convertible Senior Notes due July 2019 — 4,262,297 — — Weighted average number of shares outstanding: diluted 85,398,566 87,916,538 85,109,213 82,752,800 Income per share: Basic income per share attributable to MIC $ 0.25 $ 0.48 $ 1.61 $ 1.23 Diluted income per share attributable to MIC $ 0.25 $ 0.48 $ 1.61 $ 1.23 The effect of potentially dilutive shares for the quarter ended September 30, 2018 is calculated assuming that the 4,416 restricted stock unit grants provided to the two newly appointed independent directors on September 5, 2018 and the 19,230 restricted stock unit grants provided to the independent directors on June 7, 2018, which all will vest during the second quarter of 2019, had been fully converted into shares on those grant dates. The 2.875% Convertible Senior Notes due July 2019 and the 2.00% Convertible Senior Notes due October 2023 were anti-dilutive for the quarter ended September 30, 2018. The effect of potentially dilutive shares for the nine months ended September 30, 2018 is calculated assuming that (i) the restricted stock unit grants totaling 4,416 restricted stock unit grants provided to the two newly appointed independent directors on September 5, 2018 and the 19,230 restricted stock unit grants provided to the independent directors on June 7, 2018, which all will vest during the second quarter of 2019, had been fully converted to shares on those grant dates; and (ii) the 9,435 restricted stock unit grants provided to the independent directors on May 17, 2017, which vested during the second quarter of 2018, had been fully converted to shares on the grant date. The 2.875% Convertible Senior Notes due July 2019 and 2.00% Convertible Senior Notes due October 2023 were anti-dilutive for the nine months ended September 30, 2018. The effect of potentially dilutive shares for the quarter ended September 30, 2017 is calculated assuming that (i) the restricted stock unit grants totaling 9,435 provided to the independent directors on May 17, 2017, which vested during the second quarter of 2018, had been fully converted to shares on the grant date; and (ii) the 2.875% Convertible Senior Notes due July 2019 had been fully converted into shares on the date of issuance. The 2.00% Convertible Senior Notes due October 2023 were anti-dilutive for the quarter ended September 30, 2017. The effect of potentially dilutive shares for the nine months ended September 30, 2017 is calculated assuming that (i) the restricted stock unit grants totaling 9,435 provided to the independent directors on May 17, 2017, which vested during the second quarter of 2018, had been fully converted into shares on the grant date; and (ii) the 8,604 restricted stock unit grants (net of 2,151 restricted stock unit grants forfeited on September 30, 2016) provided to the independent directors on May 18, 2016 and restricted stock units grants of 991 provided to a new independent director on November 1, 2016, which vested during the second quarter of 2017, had been fully converted to shares on those grant dates. The 2.00% Convertible Senior Notes due October 2023 and the 2.875% Convertible Senior Notes due July 2019 were anti-dilutive for the nine months ended September 30, 2017. Quarter Ended Nine Months Ended 2018 2017 2018 2017 2.875% Convertible Senior Notes due July 2019 4,381,499 — 4,363,806 4,237,753 2.00% Convertible Senior Notes due October 2023 3,634,173 3,608,218 3,631,068 3,603,742 Total 8,015,672 3,608,218 7,994,874 7,841,495

Property, Equipment, Land and L

Property, Equipment, Land and Leasehold Improvements9 Months Ended
Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Property, Equipment, Land and Leasehold Improvements 5. Property, Equipment, Land and Leasehold Improvements September 30, (1) December 31, Land $ 319,266 $ 339,148 Easements 131 131 Buildings 39,933 41,776 Leasehold and land improvements 748,593 834,241 Machinery and equipment 3,486,263 4,092,624 Furniture and fixtures 41,956 39,386 Construction in progress 136,514 246,422 4,772,656 5,593,728 Less: accumulated depreciation (1,019,365 ) (934,114 ) Property, equipment, land and leasehold improvements, net $ 3,753,291 $ 4,659,614 (1) Property, equipment, land and leasehold improvements excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, “Basis of Presentation”, for further discussion.

Intangible Assets and Goodwill

Intangible Assets and Goodwill9 Months Ended
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets and Goodwill Intangible assets at September 30, 2018 and December 31, 2017 consisted of the following ($ in thousands): September 30, (1) December 31, Contractual arrangements $ 932,219 $ 989,228 Non-compete agreements 14,014 14,014 Customer relationships 353,520 361,623 Leasehold rights 350 350 Trade names 16,091 16,091 Technology 8,760 8,760 1,324,954 1,390,066 Less: accumulated amortization (511,606 ) (475,968 ) Intangible assets, net $ 813,348 $ 914,098 (1) Intangible assets excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, “Basis of Presentation”, for further discussion. The goodwill balance as of September 30, 2018 is comprised of the following ($ in thousands): Goodwill acquired in business combinations, net of disposals, at December 31, 2017 $ 2,193,478 Accumulated impairment charges (123,200 ) Other (1,610 ) Balance at December 31, 2017 2,068,668 Goodwill impairment (3,215 ) Other (25 ) Reclassification to assets held for sale (1) (21,628 ) Balance at September 30, 2018 $ 2,043,800 (1) Goodwill classified as held for sale related to BEC. See Note 2, “Basis of Presentation” for further discussion. The Company tests for goodwill impairment at the reporting unit level on an annual basis on October 1 st . The Company performed an interim impairment analysis using financial information through September 30, 2018 and forecasts for cash flows developed using the Company's strategic plan. The impairment analysis was performed using both the market and income approaches and weighting them based on their application to the reporting units. The interim impairment review was performed across all reporting units. As a result of this evaluation, the fair value of each of the Company’s reporting units exceeded the carrying value and no impairment was recorded. At September 30, 2018, the fair value exceeded book value by $2.2 billion, or approximately 36.0%, primarily from Atlantic Aviation, by approximately $2.0 billion, and Hawaii Gas, by approximately $250.0 million. IMTT’s fair value at September 30, 2018 exceeded the book value by approximately $20.0 million. The fair value of IMTT was impacted by the recent decline in short-term earnings related to the non-renewal of certain contracts for heavy and residual oil. The non-renewal of these contracts, or the renewal at lower rates, is partially attributable to changes in trade flows. Unfavorable fluctuations in the discount rate or declines in forecasted storage revenues and margins could result in an impairment on IMTT. A 0.25% increase to the discount rate would change the valuation of IMTT by approximately $80.0 million. Any increase in discount rate, in conjunction with any decrease to the long-term projections in cash flows for IMTT will negatively affect the current valuations. Due to the inherent uncertainties involved in making the estimates and assumptions used in the fair value analysis, actual results may differ, which could alter the fair value of the reporting units, and possibly result in impairment charges in future periods. The Company will continue to evaluate the fair value of goodwill through the fourth quarter of fiscal year 2018 for any potential impairment.

Long-Term Debt

Long-Term Debt9 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]
Long-Term Debt 7. Long-Term Debt September 30, (1) December 31, IMTT $ 1,325,975 $ 1,318,975 Atlantic Aviation 666,000 648,000 Contracted Power 313,154 576,558 MIC Hawaii 213,160 199,282 MIC Corporate 909,180 873,477 Total 3,427,469 3,616,292 Current portion (392,903 ) (50,835 ) Long-term portion 3,034,566 3,565,457 Unamortized deferred financing costs (2) (25,558 ) (35,146 ) Long-term portion less unamortized debt discount and deferred financing costs $ 3,009,008 $ 3,530,311 (1) Excludes the current and long-term portion of debt related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, “Basis of Presentation”, for further discussion. (2) The weighted average remaining life of the deferred financing costs at September 30, 2018 was 5.3 years. At September 30, 2018, the total undrawn capacity on the revolving credit facilities was $930.5 million excluding letters of credit outstanding of $37.8 million. MIC Corporate Senior Secured Revolving Credit Facility On January 3, 2018, the Company completed the refinancing and upsizing of its senior secured revolving credit facility to $600.0 million and extended the maturity through January 3, 2022. At September 30, 2018 and December 31, 2017, MIC had $176.5 million and $143.5 million, respectively, outstanding on its senior secured revolving credit facility. During the nine months ended September 30, 2018, MIC borrowed $205.5 million for general corporate purposes and repaid $172.5 million on its revolving credit facility. At September 30, 2018, the undrawn balance on the senior secured revolving credit facility was $423.5 million. In October 2018, using the proceeds from the BEC sale, the Company repaid $150.0 million on its revolving credit facility. 2.875% Convertible Senior Notes due July 2019 At September 30, 2018 and December 31, 2017, the Company had $350.0 million aggregate principal outstanding on its five-year, 2.875% convertible senior notes due July 2019. On July 15, 2018, the Company reclassified these notes due July 2019 to current portion of long-term debt. At September 30, 2018, the fair value of these convertible senior notes was approximately $348.0 million. These convertible senior notes fall within Level 1 of the fair value hierarchy. On July 15, 2018, the Company increased the conversion rate to 12.5258 shares of common stock per $1,000 principal amount. The adjustment was made, in accordance with the indenture governing the senior notes, on the anniversary of the convertible senior notes issuance and reflects the impact of dividends paid by the Company. 2.00% Convertible Senior Notes due October 2023 At September 30, 2018 and December 31, 2017, the Company had $375.2 million and $371.4 million, respectively, outstanding on its seven year, 2.00% convertible senior notes due October 2023. At September 30, 2018, the fair value of the liability component of these convertible senior notes was approximately $345.0 million. These convertible senior notes fall within Level 1 of the fair value hierarchy. On October 13, 2018, the Company increased the conversion rate to 9.0290 shares of common stock per $1,000 principal amount. The adjustment was made, in accordance with the indenture governing the senior notes, on the anniversary of the convertible senior notes issuance and reflects the impact of dividends paid by the Company. September 30, December 31, Liability Component: Principal $ 402,500 $ 402,500 Unamortized debt discount (19,765 ) (22,475 ) Long-term debt, net of unamortized debt discount 382,735 380,025 Unamortized deferred financing costs (7,515 ) (8,643 ) Net carrying amount $ 375,220 $ 371,382 Equity Component $ 26,748 $ 26,748 Quarter Ended Nine Months Ended 2018 2017 2018 2017 Contractual interest expense $ 2,013 $ 2,012 $ 6,038 $ 5,769 Amortization of debt discount 910 882 2,710 2,377 Amortization of deferred financing costs 376 376 1,128 1,133 Total interest expense $ 3,299 $ 3,270 $ 9,876 $ 9,279 IMTT At September 30, 2018 and December 31, 2017, IMTT had $217.0 million and $210.0 million outstanding on its revolving credit facilities, respectively. During the nine months ended September 30, 2018, IMTT borrowed $17.0 million primarily for general corporate purposes and repaid $10.0 million on its USD revolving credit facility. At September 30, 2018, the undrawn portion on its USD revolving credit facility and CAD revolving credit facility were $333.0 million and $50.0 million, respectively. In October 2018, using the proceeds from the BEC sale and cash on hand, the Company repaid in full the outstanding balance of $217.0 million on the IMTT revolving credit facility. At September 30, 2018, IMTT had $600.0 million of fixed rate senior notes outstanding. At September 30, 2018, the fair value of the senior notes was approximately $585.0 million. The senior notes fall within Level 1 of the fair value hierarchy. Atlantic Aviation At September 30, 2018 and December 31, 2017, Atlantic Aviation had $291.0 million and $258.0 million outstanding on its revolving credit facility, respectively. During the nine months ended September 30, 2018, Atlantic Aviation borrowed $33.0 million on its revolving credit facility primarily to fund an on-field consolidation of an FBO and for general corporate purposes. At September 30, 2018, the undrawn portion on its revolving credit facility was $59.0 million. In October 2018, using the proceeds from the BEC sale and cash on hand, the Company repaid in full the outstanding balance of $291.0 million on the Atlantic Aviation revolving credit facility. Contracted Power At September 30, 2018, Contracted Power had $180.9 million of fixed rate term loans outstanding. At September 30, 2018, the fair value of the term loans was approximately $180.0 million. The term loans fall within Level 2 of the fair value hierarchy. On September 30, 2018, the current and long-term portion of debt related to BEC was classified as held for sale on the consolidated condensed balance sheet. See Note 2, “Basis of Presentation”, for further discussion. On October 12, 2018, the Company concluded the sale of BEC and received cash of $657.4 million, net of the assumption of the outstanding debt balance of $243.5 million by the buyer and subject to post-closing working capital adjustments. MIC Hawaii In February 2018, Hawaii Gas exercised the second of two one-year extensions related to its $80.0 million secured term loan facility and its $60.0 million revolving credit facility extending their respective maturities to February 2023. At September 30, 2018, Hawaii Gas had $15.0 million outstanding on its revolving credit facility. At December 31, 2017, Hawaii Gas’ revolving credit facility was undrawn. During the nine months ended September 30, 2018, Hawaii Gas borrowed $20.0 million for general corporate purposes and repaid $5.0 million on its revolving credit facility. At September 30, 2018, the undrawn portion on its revolving credit facility was $45.0 million. In October 2018, using the proceeds from the BEC sale and cash on hand, the Company repaid in full the outstanding balance of $15.0 million on the Hawaii Gas revolving credit facility. At September 30, 2018, Hawaii Gas had $100.0 million of fixed rate senior notes outstanding, which approximates the fair value. The senior notes fall within Level 1 of the fair value hierarchy. During the quarters ended March 31, 2018 and June 30, 2018, Hawaii Gas was not in compliance with certain credit agreement provisions. During the quarter ended September 30, 2018, the business received waivers from its syndicate of lenders relating to the non-compliance. At September 30, 2018, Hawaii Gas was again in compliance with its credit agreement having received waivers from its lenders.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities9 Months Ended
Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities 8. Derivative Instruments and Hedging Activities Interest Rate Contracts The Company and certain of its businesses have in place variable-rate debt. Management believes that it is prudent to limit the variability of a portion of the business’ interest payments. To meet this objective, the Company enters into interest rate agreements, primarily using interest rate swaps and from time to time using interest rate caps, to manage fluctuations in cash flows resulting from interest rate risk on a portion of its debt with a variable-rate component. Interest rate swaps change the variable-rate cash flow exposure on the debt obligations to fixed cash flows. Under the terms of the interest rate swaps, the Company receives variable interest rate payments and makes fixed interest rate payments, thereby creating the equivalent of fixed-rate debt for the portion of the debt that is swapped. At September 30, 2018, the Company had $3.4 billion of current and long-term debt, of which $1.1 billion was economically hedged with interest rate contracts, $1.6 billion was fixed rate debt and $758.7 million was unhedged. The Company does not use hedge accounting. All movements in the fair value of the interest rate derivatives are recorded directly through earnings. Commodity Price Hedges The risks associated with fluctuations in the prices that Hawaii Gas, a business within the MIC Hawaii reportable segment, pays for propane is principally a result of market forces reflecting changes in supply and demand for propane and other energy commodities. Hawaii Gas’ gross margin (revenue less cost of product sales excluding depreciation and amortization) is sensitive to changes in propane supply costs and Hawaii Gas may not always be able to pass through product cost increases fully or on a timely basis, particularly when product costs rise rapidly. In order to reduce the volatility of the business’ propane market price risk, Hawaii Gas has used and expects to continue to use over-the-counter commodity derivative instruments including price swaps. Hawaii Gas does not use commodity derivative instruments for speculative or trading purposes. Over-the-counter derivative commodity instruments used by Hawaii Gas to hedge forecasted purchases of propane are generally settled at expiration of the contract. Financial Statement Location Disclosure for Derivative Instruments The Company measures derivative instruments at fair value using the income approach which discounts the future net cash settlements expected under the derivative contracts to a present value. These valuations use primarily observable (level 2) inputs, including contractual terms, interest rates and yield curves observable at commonly quoted intervals. The Company’s fair value measurements of its derivative instruments and the related location of the assets and liabilities within the consolidated condensed balance sheets at September 30, 2018 and December 31, 2017 were ($ in thousands): Balance Sheet Location Assets (Liabilities) at Fair Value September 30, (1) December 31, Fair value of derivative instruments – current assets $ 17,510 $ 11,965 Fair value of derivative instruments – noncurrent assets 26,958 24,455 Total derivative contracts – assets $ 44,468 $ 36,420 Fair value of derivative instruments – current liabilities $ (534 ) $ (1,710 ) Fair value of derivative instruments – noncurrent liabilities (1,174 ) (4,668 ) Total derivative contracts – liabilities $ (1,708 ) $ (6,378 ) (1) Fair value of derivative instruments excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, “Basis of Presentation”, for further discussion. The Company’s hedging activities for the quarters and nine months ended September 30, 2018 and 2017 and the related location within the consolidated condensed statements of operations were ($ in thousands): Amount of Gain (Loss) Recognized in Consolidated Quarter ended Nine Months Ended Financial Statement Account 2018 2017 2018 2017 Interest expense – interest rate caps $ 1,469 $ (219 ) $ 8,470 $ (2,888 ) Interest expense – interest rate swaps 3,260 57 17,294 (4,051 ) Cost of product sales – commodity swaps 2,695 5,769 3,497 2,154 Total $ 7,424 $ 5,607 $ 29,261 $ (4,785 ) All of the Company’s derivative instruments are collateralized by the assets of the respective businesses.

Stockholders' Equity

Stockholders' Equity9 Months Ended
Sep. 30, 2018
Equity [Abstract]
Stockholders’ Equity 9. Stockholders’ Equity 2016 Omnibus Employee Incentive Plan On May 18, 2016, the Company adopted the 2016 Omnibus Employee Incentive Plan (Plan). The Plan provides for the issuance of equity awards covering up to 500,000 shares of common stock to attract, retain, and motivate employees, consultants and others who perform services for the Company and its subsidiaries. Under the Plan, the Compensation Committee determines the persons who will receive awards, the time at which they are granted and the terms of the awards. Type of awards include stock options, stock appreciation rights, restricted stock, restricted stock units, dividend equivalent rights, cash-based awards and other stock-based awards. At September 30, 2018, there were no awards outstanding under this Plan. Accumulated Other Comprehensive Loss Post-Retirement Translation (1) Total Stockholders’ Balance at December 31, 2016 $ (16,805 ) $ (12,155 ) $ (28,960 ) Translation adjustment — 2,738 2,738 Balance at September 30, 2017 $ (16,805 ) $ (9,417 ) $ (26,222 ) Balance at December 31, 2017 $ (20,456 ) $ (9,537 ) $ (29,993 ) Translation adjustment — (2,092 ) (2,092 ) Balance at September 30, 2018 $ (20,456 ) $ (11,629 ) $ (32,085 ) (1) Translation adjustment is presented net of tax benefit of $802,000 and net of tax expense of $1.9 million for the nine months ended September 30, 2018 and 2017, respectively.

Reportable Segments

Reportable Segments9 Months Ended
Sep. 30, 2018
Segment Reporting [Abstract]
Reportable Segments 10. Reportable Segments At September 30, 2018, the Company’s businesses consisted of four reportable segments: IMTT, Atlantic Aviation, Contracted Power and MIC Hawaii. IMTT IMTT provides bulk liquid storage, handling and other services in North America through seventeen terminals located in the United States, one terminal in Quebec, Canada and one partially owned terminal in Newfoundland, Canada. IMTT derives the majority of its revenue from storage and handling of petroleum products, various chemicals, renewable fuels, and vegetable and tropical oils. Based on storage capacity, IMTT operates one of the largest third-party bulk liquid terminals businesses in the United States. Revenue from IMTT is included in service revenue. Atlantic Aviation Atlantic Aviation derives the majority of its revenue from fuel delivery services and from other airport services, including de-icing and aircraft hangar rental. All of the revenue of Atlantic Aviation is generated at airports in the U.S. The business currently operates at 70 airports. Revenue from Atlantic Aviation is included in service revenue. Contracted Power At September 30, 2018, the Contracted Power business segment has controlling interests in seven utility-scale solar photovoltaic facilities, two wind facilities and 100% ownership of a gas-fired facility that are in operations in the United States. The wind and solar facilities that are operational at September 30, 2018 have an aggregate generating capacity of 345 megawatt (MW) of wholesale electricity to utilities. Revenue from the wind, solar and gas-fired power facilities are included in product revenue. These projects are held in LLCs, and are treated as partnerships for income tax purposes, with co-investors. The acquisition price on these projects can vary depending on, among other things, factors such as the size of the project, PPA terms, eligibility for tax incentives, debt package, operating cost structure and development stage. A completed project takes out all of the construction risk, testing and costs associated with construction contracts. The Company has certain rights to make decisions over the management and operations of these wind and solar facilities. The Company has determined that it is appropriate to consolidate these projects, with the co-investors’ interest reflected as Noncontrolling interests Through October 12, 2018, the Company owned 100% of BEC, a 644 MW gas-fired facility located in Bayonne, New Jersey, adjacent to IMTT’s Bayonne facility. Power produced by BEC was delivered to New York City via a dedicated transmission cable under New York Harbor. BEC had tolling agreements with a creditworthy off-taker for approximately 50% of its power generating capacity. The tolling agreements generated revenue whether or not the facility was in use for power production. In addition to revenue from the tolling agreements and capacity payments from the grid operator, BEC generated an energy margin when the facility was dispatched. Revenue produced by BEC was accounted for as an operating lease that did not have minimum lease payments. All of the lease income under the lease were recorded within product revenue when natural gas transportation services were performed. At September 30, 2018, the assets and liabilities of BEC were classified as held for sale on the consolidated condensed balance sheet. On October 12, 2018, the Company concluded the sale of BEC and received cash of $657.4 million, net of the assumption of the outstanding debt balance of $243.5 million by the buyer and subject to post-closing working capital adjustments. See Note 2, “Basis of Presentation”, for further discussions. MIC Hawaii MIC Hawaii comprises: Hawaii Gas, Hawaii’s only government-franchised gas utility and an unregulated liquefied petroleum gas distribution business providing gas and related services to commercial, residential and governmental customers; a design-build mechanical contractor focused on designing and constructing energy efficient and related building infrastructure; and controlling interests in two solar facilities on Oahu. Revenue from Hawaii Gas and the solar facilities are recorded in product revenue (see above in Contracted Power for further discussion on revenue from PPAs). Revenue from the design-build mechanical contractor business is recorded in service revenue. Revenue from the Hawaii Gas business is generated from the distribution and sales of synthetic natural gas (SNG), liquefied petroleum gas (LPG) and liquefied natural gas (LNG). Revenue is primarily a function of the volume of SNG, LPG and LNG consumed by customers and the price per British Thermal Unit or gallon charged to customers. Revenue levels, without organic growth, will generally track global commodity prices, namely petroleum and natural gas, as its products are derived from these commodities. All of the MIC business segments are managed separately and management has chosen to organize the Company around the distinct products and services offered. Selected information by segment is presented in the following tables. Revenue from external customers for the Company’s consolidated reportable segments were ($ in thousands): Quarter Ended September 30, 2018 IMTT Atlantic Contracted MIC Intersegment Total Service Revenue Terminal Services $ 19,385 $ — $ — $ — $ (22 ) $ 19,363 Lease 97,720 — — — (1,206 ) 96,514 Fuel — 172,513 — — — 172,513 Hangar — 21,958 — — — 21,958 Construction — — — 8,271 — 8,271 Other (1) 1,124 40,437 — 851 — 42,412 Total Service Revenue $ 118,229 $ 234,908 $ — $ 9,122 $ (1,228 ) $ 361,031 Product Revenue Lease $ — $ — $ 48,570 $ 1,311 $ — $ 49,881 Gas — — — 55,499 — 55,499 Other — — 3,880 2,989 — 6,869 Total Product Revenue $ — $ — $ 52,450 $ 59,799 $ — $ 112,249 Total Revenue $ 118,229 $ 234,908 $ 52,450 $ 68,921 $ (1,228 ) $ 473,280 Quarter Ended September 30, 2017 IMTT Atlantic Contracted MIC Intersegment Total Service Revenue Terminal Services $ 18,786 $ — $ — $ — $ (21 ) $ 18,765 Lease 106,096 — — — (1,209 ) 104,887 Fuel — 152,620 — — — 152,620 Hangar — 19,820 — — — 19,820 Construction — — — 13,526 — 13,526 Other (1) 9,285 39,017 — 300 — 48,602 Total Service Revenue $ 134,167 $ 211,457 $ — $ 13,826 $ (1,230 ) $ 358,220 Product Revenue Lease $ — $ — $ 38,822 $ 741 $ — $ 39,563 Gas — — — 48,877 — 48,877 Other — — 3,623 2,778 — 6,401 Total Product Revenue $ — $ — $ 42,445 $ 52,396 $ — $ 94,841 Total Revenue $ 134,167 $ 211,457 $ 42,445 $ 66,222 $ (1,230 ) $ 453,061 (1) See Note 3, “Implementation of ASU 2014-09”, for revenues disclosed in Other. Nine Months Ended September 30, 2018 IMTT Atlantic Contracted MIC Intersegment Total Service Revenue Terminal Services $ 66,719 $ — $ — $ — $ (22 ) $ 66,697 Lease 303,633 — — — (3,669 ) 299,964 Fuel — 523,867 — — — 523,867 Hangar — 65,515 — — — 65,515 Construction — — — 38,478 — 38,478 Other (1) 16,629 125,659 — 2,828 — 145,116 Total Service Revenue $ 386,981 $ 715,041 $ — $ 41,306 $ (3,691 ) $ 1,139,637 Product Revenue Lease $ — $ — $ 117,596 $ 3,410 $ — $ 121,006 Gas — — — 172,206 — 172,206 Other — — 11,544 8,523 — 20,067 Total Product Revenue $ — $ — $ 129,140 $ 184,139 $ — $ 313,279 Total Revenue $ 386,981 $ 715,041 $ 129,140 $ 225,445 $ (3,691 ) $ 1,452,916 Nine Months Ended September 30, 2017 IMTT Atlantic Contracted MIC Intersegment Total Service Revenue Terminal Services $ 61,791 $ — $ — $ — $ (21 ) $ 61,770 Lease 323,147 — — — (3,663 ) 319,484 Fuel — 449,486 — — — 449,486 Hangar — 56,672 — — — 56,672 Construction — — — 38,546 — 38,546 Other (1) 25,190 114,991 — 930 — 141,111 Total Service Revenue $ 410,128 $ 621,149 $ — $ 39,476 $ (3,684 ) $ 1,067,069 Product Revenue Lease $ — $ — $ 99,849 $ 2,165 $ — $ 102,014 Gas — — — 155,098 — 155,098 Other — — 10,832 8,495 — 19,327 Total Product Revenue $ — $ — $ 110,681 $ 165,758 $ — $ 276,439 Total Revenue $ 410,128 $ 621,149 $ 110,681 $ 205,234 $ (3,684 ) $ 1,343,508 (1) See Note 3, “Implementation of ASU 2014-09”, for revenues disclosed in Other. In accordance with FASB ASC 280, Segment Reporting the most comparable GAAP measure EBITDA excluding non-cash items for the Company’s consolidated reportable segments is shown in the tables below ($ in thousands). Allocations of corporate expenses, intercompany fees and the tax effect have been excluded as they are eliminated in consolidation. Quarter Ended September 30, 2018 IMTT Atlantic Contracted MIC Total Net income (loss) $ 16,432 $ 24,735 $ 18,128 $ (17,958 ) $ 41,337 Interest expense, net 11,677 5,290 4,944 2,069 23,980 Provision (benefit) for income taxes 6,422 9,058 7,852 (7,299 ) 16,033 Goodwill impairment — — — 3,215 3,215 Depreciation 28,804 14,400 7,848 5,698 56,750 Amortization of intangibles 3,879 11,182 178 4,791 20,030 Pension expense 1,914 5 — 128 2,047 Other non-cash expense (income) 207 323 (1,574 ) 4,303 3,259 EBITDA excluding non-cash items $ 69,335 $ 64,993 $ 37,376 $ (5,053 ) $ 166,651 Quarter Ended September 30, 2017 IMTT Atlantic Contracted MIC Total Net income $ 20,755 $ 21,591 $ 7,251 $ 6,160 $ 55,757 Interest expense, net 10,187 4,295 6,281 1,877 22,640 Provision for income taxes 14,422 11,139 6,337 4,830 36,728 Depreciation 28,001 12,954 13,724 3,330 58,009 Amortization of intangibles 3,510 12,332 1,106 381 17,329 Pension expense 1,883 5 — 272 2,160 Other non-cash expense (income) 178 1,212 (1,914 ) (3,360 ) (3,884 ) EBITDA excluding non-cash items $ 78,936 $ 63,528 $ 32,785 $ 13,490 $ 188,739 Nine Months Ended September 30, 2018 IMTT Atlantic Contracted MIC Total Net income (loss) $ 61,909 $ 78,566 $ 35,456 $ (12,344 ) $ 163,587 Interest expense, net 30,349 9,601 10,661 5,246 55,857 Provision (benefit) for income taxes 24,195 28,769 12,456 (4,350 ) 61,070 Goodwill impairment — — — 3,215 3,215 Depreciation 87,066 43,143 35,680 12,975 178,864 Amortization of intangibles 11,636 34,877 2,392 6,565 55,470 Pension expense 5,737 16 — 383 6,136 Other non-cash expense (income) 611 1,232 (5,152 ) 9,548 6,239 EBITDA excluding non-cash items $ 221,503 $ 196,204 $ 91,493 $ 21,238 $ 530,438 Nine Months Ended September 30, 2017 IMTT Atlantic Contracted MIC Total Net income $ 67,184 $ 60,225 $ 9,604 $ 16,004 $ 153,017 Interest expense, net 30,707 13,648 20,431 5,795 70,581 Provision for income taxes 46,686 36,766 8,209 10,772 102,433 Depreciation 84,797 36,468 41,711 9,777 172,753 Amortization of intangibles 9,029 37,426 3,320 1,145 50,920 Pension expense 5,649 15 — 817 6,481 Other non-cash expense (income) 315 1,252 (6,170 ) 3,108 (1,495 ) EBITDA excluding non-cash items $ 244,367 $ 185,800 $ 77,105 $ 47,418 $ 554,690 Reconciliations of total reportable segments’ EBITDA excluding non-cash items to consolidated net income before income taxes were ($ in thousands): Quarter Ended Nine Months Ended 2018 2017 2018 2017 Total reportable segments EBITDA excluding non-cash items $ 166,651 $ 188,739 $ 530,438 $ 554,690 Interest income 113 54 304 129 Interest expense (32,616 ) (29,291 ) (81,693 ) (90,129 ) Goodwill impairment (3,215 ) — (3,215 ) — Depreciation (56,924 ) (58,009 ) (179,368 ) (172,753 ) Amortization of intangibles (20,030 ) (17,329 ) (55,470 ) (50,920 ) Selling, general and administrative expenses – Corporate and Other (7,150 ) (6,214 ) (21,496 ) (21,301 ) Fees to Manager-related party (12,333 ) (17,954 ) (36,113 ) (54,610 ) Pension expense (2,047 ) (2,160 ) (6,136 ) (6,481 ) Other (expense) income, net (3,189 ) 3,884 (6,243 ) 1,495 Total consolidated net income before income taxes $ 29,260 $ 61,720 $ 141,008 $ 160,120 Capital expenditures, on a cash basis, for the Company’s reportable segments were ($ in thousands): Quarter Ended Nine Months Ended 2018 2017 2018 2017 IMTT $ 17,454 $ 20,232 $ 41,786 $ 52,291 Atlantic Aviation 15,187 23,661 51,634 57,757 Contracted Power 8,501 50,461 42,702 99,961 MIC Hawaii 6,729 7,604 17,398 21,054 Total capital expenditures of reportable segments $ 47,871 $ 101,958 $ 153,520 $ 231,063 Corporate and other 1,336 2,524 5,517 3,770 Total consolidated capital expenditures $ 49,207 $ 104,482 $ 159,037 $ 234,833 Property, equipment, land and leasehold improvements, net, goodwill and total assets for the Company’s reportable segments and its reconciliation to consolidated total assets were ($ in thousands): Property, Equipment, Goodwill Total Assets September 30, December 31, September 30, December 31, September 30, December 31, IMTT $ 2,254,203 $ 2,305,440 $ 1,427,588 $ 1,427,863 $ 4,027,790 $ 4,109,448 Atlantic Aviation 568,741 559,597 496,019 495,769 1,694,075 1,710,535 Contracted Power 625,412 1,466,139 — 21,628 704,429 1,617,658 MIC Hawaii 298,861 302,220 120,193 123,408 529,285 532,144 Total assets of reportable segments $ 3,747,217 $ 4,633,396 $ 2,043,800 $ 2,068,668 $ 6,955,579 $ 7,969,785 Corporate and other 6,074 26,218 — — 10,957 39,166 Assets held for sale (1) — — — — 971,934 — Total consolidated assets $ 3,753,291 $ 4,659,614 $ 2,043,800 $ 2,068,668 $ 7,938,470 $ 8,008,951 (1) At September 30, 2018, Property, Equipment, Land and Leasehold Improvements, net, and Goodwill excludes balances related to BEC, which were classified as held for sale. See Note 2, “Basis of Presentation”, for further discussion.

Long-Term Contracted Revenue

Long-Term Contracted Revenue9 Months Ended
Sep. 30, 2018
Contractors [Abstract]
Long-Term Contracted Revenue 11. Long-Term Contracted Revenue Long-term contracted revenue consists of revenue from future minimum lease revenue accounted in accordance with ASC 840, Leases Revenue Lease Contract Total 2018 remaining $ 87,187 $ 21,102 $ 108,289 2019 236,685 49,066 285,751 2020 126,915 33,459 160,374 2021 65,912 27,176 93,088 2022 44,422 23,016 67,438 2023 29,196 15,718 44,914 Thereafter 51,356 16,058 67,414 Total $ 641,673 $ 185,595 $ 827,268 The above table does not include the future minimum lease revenue from the Company’s Contracted Power and the renewable businesses within the MIC Hawaii reportable segments. The payments from these leases are considered variable as they are based on the output of the underlying assets (i.e. energy generated).

Related Party Transactions

Related Party Transactions9 Months Ended
Sep. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions 12. Related Party Transactions Management Services At September 30, 2018 and December 31, 2017, the Manager held 12,227,736 shares and 5,435,442 shares, respectively, of the Company. Pursuant to the terms of the Third Amended and Restated Management Services Agreement (Management Agreement), the Manager may sell these shares at any time. Under the Management Agreement, the Manager, at its option, may reinvest base management fees and performance fees, if any, in shares of the Company. From May 2018 through September 30, 2018, the Manager bought 5,987,100 shares in the open market and increased its holdings to 14.29% at September 30, 2018. Declared Period Covered $ per Share Record Date Payable Date Cash Paid to October 30, 2018 Third quarter 2018 $ 1.00 November 12, 2018 November 15, 2018 (1) July 31, 2018 Second quarter 2018 1.00 August 13, 2018 August 16, 2018 $ 10,711 May 1, 2018 First quarter 2018 1.00 May 14, 2018 May 17, 2018 6,213 February 19, 2018 Fourth quarter 2017 1.44 March 5, 2018 March 8, 2018 8,067 October 30, 2017 Third quarter 2017 1.42 November 13, 2017 November 16, 2017 7,484 August 1, 2017 Second quarter 2017 1.38 August 14, 2017 August 17, 2017 6,941 May 2, 2017 First quarter 2017 1.32 May 15, 2017 May 18, 2017 6,332 February 17, 2017 Fourth quarter 2016 1.31 March 3, 2017 March 8, 2017 6,080 (1) The amount of dividend payable to the Manager for the third quarter of 2018 will be determined on November 12, 2018, the record date. Under the Management Agreement, subject to the oversight and supervision of the Company’s board of directors, the Manager is responsible for and oversees the management of the Company’s operating businesses. In addition, the Manager has the right to elect the Chairman of the Board of the Company, subject to minimum equity ownership, and to assign, or second, to the Company, two of its employees to serve as chief executive officer and chief financial officer of the Company and seconds or makes other personnel available as required. In accordance with the Management Agreement, the Manager is entitled to a monthly base management fee based primarily on the Company’s market capitalization, and potentially a quarterly performance fee based on total shareholder returns relative to a U.S. utilities index. Currently, the Manager has elected to reinvest the future base management fees and performance fees, if any, in new primary shares. For the quarter and nine months ended September 30, 2018, the Company incurred base management fees of $12.3 million and $36.1 million, respectively, compared with $17.9 million and $54.6 million for the quarter and nine months ended September 30, 2017, respectively. The Company did not incur any performance fees for the quarter and nine months ended September 30, 2018 and 2017. Due to Manager-related party Period Base Management Performance Shares 2018 Activities: Third quarter 2018 $ 12,333 $ — 269,286 (1) Second quarter 2018 10,852 — 277,053 First quarter 2018 12,928 — 265,002 2017 Activities: Fourth quarter 2017 $ 16,778 $ — 248,162 Third quarter 2017 17,954 — 240,674 Second quarter 2017 18,433 — 233,394 First quarter 2017 18,223 — 232,398 (1) The Manager elected to reinvest all of the monthly base management fees for the third quarter of 2018 in shares. The Company issued 269,286 shares for the quarter ended September 30, 2018, including 89,542 shares that were issued in October 2018 for the September 2018 monthly base management fee. The Manager is not entitled to any other compensation and all costs incurred by the Manager, including compensation of seconded staff, are paid by the Manager out of its base management fee. However, the Company is responsible for other direct costs including, but not limited to, expenses incurred in the administration or management of the Company and its subsidiaries, income taxes, audit and legal fees, acquisitions and dispositions and its compliance with applicable laws and regulations. During the quarter and nine months ended September 30, 2018, the Manager charged the Company $296,000 and $705,000, respectively, for reimbursement of out-of-pocket expenses compared with $284,000 and $729,000, respectively, for the quarter and nine months ended September 30, 2017. The unpaid portion of the out-of-pocket expenses at the end of the reporting period is included in Due to Manager-related party Other Services The Company uses the resources of the Macquarie Group with respect to a range of advisory, procurement, insurance, hedging, lending and other services. Engagements involving members of the Macquarie Group are reviewed and approved by the Audit Committee of the Company’s board of directors. Macquarie Group affiliates are engaged on an arm’s length basis and frequently as a member of a syndicate of providers whose other members establish the terms of the interaction. Advisory Services The Macquarie Group, and wholly-owned subsidiaries within the Macquarie Group, including Macquarie Bank Limited (MBL) and Macquarie Capital (USA) Inc. (MCUSA) have provided various advisory and other services and incurred expenses in connection with the Company’s equity raising activities, acquisitions and debt structuring for the Company and its businesses. Underwriting fees are recorded in stockholders’ equity as a direct cost of equity offerings. Advisory fees and out-of-pocket expenses relating to acquisitions are expensed as incurred. Debt arranging fees are deferred and amortized over the term of the credit facility. In June 2015, the Company entered into an equity distribution agreement with sales agents, including MCUSA, providing for the sale of shares of its common stock, par value $0.001 per share, from time to time having an aggregate gross offering price of up to $400.0 million. The equity distribution agreement also provides for sales of shares to any sales agent as principal for its own account at a price agreed upon at the time of the sale. For the nine months ended September 30, 2018 and 2017, the Company did not engage MCUSA for such activities. Long-Term Debt In January 2018, the Company completed the refinancing and upsizing of its Prior to the refinancing in January 2018, the Company incurred $4,000 in interest expense related to MIHI LLC’s portion of the MIC senior secured revolving credit facility. For the quarter and nine months ended September 30, 2017, the Company incurred $47,000 and $116,000, respectively, in interest expense related to MIHI LLC’s portion of the MIC senior secured revolving credit facility. Subsequent to the refinancing in January 2018, the Company incurred $139,000 and $376,000, respectively, in interest expense related to Macquarie Capital Funding LLC’s portion of the MIC senior secured revolving credit facility for the quarter and nine months ended September 30, 2018. Other Transactions In May 2018, the Company sold its equity interest in projects involving two properties to Macquarie Infrastructure and Real Assets, Inc. (MIRA Inc.), an affiliate of the Manager, for their cost of approximately $27.1 million. The Company retained the right to 20% of any gain on a subsequent sale by MIRA Inc. to a third party of a more than 50% interest in either or both of the projects. Macquarie Energy North America Trading, Inc. (MENAT), an indirect subsidiary of Macquarie Group Limited, entered into contracts with IMTT to lease capacity. At March 31, 2017, MENAT leased 200,000 barrels of capacity from IMTT. During the nine months ended September 30, 2017, IMTT recognized $907,000 in revenues from MENAT. The contracts expired during the quarter ended June 30, 2017.

Income Taxes

Income Taxes9 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes 13. Income Taxes The Company expects to incur federal consolidated taxable income for the year ending December 31, 2018, which will be fully offset by the Company’s net operating loss (NOL) carryforwards. The Company believes that it will be able to utilize all of its federal prior year NOLs, which will begin to expire after 2029 and completely expire after 2035. On December 22, 2017, the Tax Cuts and Jobs Act was signed into law and includes provisions that may have an impact on the Company’s federal taxable income. The most significant of these are 100% bonus depreciation on qualifying assets (which is scheduled to phase down ratably to 0% between 2023 and 2027) and a reduction in the federal corporate tax rate from 35% to 21%. The Tax Cuts and Jobs Act also includes a new limitation on the deductibility of net interest expense that generally limits the deduction to 30% of “adjusted taxable income”. For years before 2022, adjusted taxable income is defined as taxable income computed without regard to certain items, including net business interest expense, the amount of any NOL deduction, tax depreciation and tax amortization. The Company does not expect to incur net interest expense that is greater than 30% of adjusted taxable income prior to 2022. In the third quarter of 2018, the Company completed its data gathering and analysis based on the Tax Cuts and Jobs Act and guidance issued to date in 2018 as it relates to the remeasurement of existing deferred tax balances. The Company has not identified any material change to the net one-time charge for the year ended December 31, 2017 related to the Tax Cuts and Jobs Act.

Legal Proceedings and Contingen

Legal Proceedings and Contingencies9 Months Ended
Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings and Contingencies 14. Legal Proceedings and Contingencies The Company and its subsidiaries are subject to legal proceedings arising in the ordinary course of business. In management’s opinion, the Company has adequate legal defenses and/or insurance coverage with respect to the eventuality of such actions, and does not believe the outcome of any pending legal proceedings will be material to the Company’s financial position or result of operations. Shareholder Litigation On April 23, 2018, a complaint captioned City of Riviera Beach General Employees Retirement System v. Macquarie Infrastructure Corp., et al. Daniel Fajardo v. Macquarie Infrastructure Corporation, et al. City of Riviera Beach Fajardo On August 9, 2018, a shareholder derivative complaint captioned Phyllis Wright v. Liam Stewart, et al. Raymond Greenlee v. James Hooke, et al. City of Riviera Beach Fajardo Wright Wright Greenlee

Subsequent Events

Subsequent Events9 Months Ended
Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events 15. Subsequent Events Dividend On October 30, 2018, the board of directors declared a dividend of $1.00 per share for the quarter ended September 30, 2018, which is expected to be paid on November 15, 2018 to holders of record on November 12, 2018. Manager Waiver of Base Management Fees Effective November 1, 2018, the Manager has elected to waive two portions of the base management fee to which it is entitled under the terms of the Managements Services Agreement between the Company. In effect, this waiver caps the base management fee at 1% of the Company’s equity market capitalization and eliminates fees on any debt it have or may incur at the holding company. Although MIMUSA reserves the right to revoke the fee waiver and revert to the prior terms of the agreement subject to providing the Company with not less than a one year notice, MIC believes MIMUSA has no current intent to do so. A revocation of the waiver would not trigger a recapture of previously waived fees. The waivers result in a reduction in the fees paid to the Manager of approximately $10.0 million per year based on the Company’s market value and capital structure at the end of the third quarter.

Basis of Presentation (Policies

Basis of Presentation (Policies)9 Months Ended
Sep. 30, 2018
Accounting Policies [Abstract]
Use of Estimates Use of Estimates The preparation of unaudited consolidated condensed financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures related thereto at the date of the unaudited consolidated condensed financial statements and the reported amounts of revenue and expenses during the reporting period. Management evaluates these estimates and assumptions on an ongoing basis. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the unaudited interim consolidated condensed financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from estimates.
Financial Instruments Financial Instruments The Company’s financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and variable-rate senior debt, are carried at cost, which approximates their fair value because of either the short-term maturity, or competitive interest rates assigned to these financial instruments. Assets and Liabilities Held for Sale — Bayonne Energy Center (BEC) During the quarter ended March 31, 2018, the Company announced that it was exploring the potential sale of a portion or all of Bayonne Energy Center (BEC), a business within the Contracted Power segment. On July 27, 2018, the Company entered into an agreement to sell 100% of BEC to NHIP II Bayonne Holdings LLC. At September 30, 2018, the Company classified $971.9 million as assets held for sale, of which approximately $845.0 million related to property, equipment, land and leasehold improvements, approximately $50.0 million related to intangible assets and approximately $20.0 million in goodwill, and $299.7 million as liabilities held for sale, of which $243.5 million related to total debt, on the consolidated condensed balance sheet. The sale of BEC will not qualify for discontinued operation presentation under ASC 205-20, Presentation of Financial Statements — Discontinued Operations. On October 12, 2018, the Company concluded the sale of BEC and received cash of $657.4 million, net of the assumption of the outstanding debt balance of $243.5 million by the buyer and subject to post-closing resulting in a preliminary pre-tax gain of approximately $5.0 million. Any such adjustments expected Investment Write-Down — Critchfield Pacific, Inc. (CPI) The Company continues to review its strategic options available, including with respect to certain other, smaller businesses in its portfolio. Consistent with this, and in light of the ongoing underperformance of the design-build mechanical contractor, Critchfield Pacific, Inc. (CPI) within the MIC Hawaii segment, the Company wrote-down its investment in the business in the third quarter of 2018. In total, the Company wrote-down approximately $30.0 million, which includes fixed assets and intangible assets of approximately $9.0 million, as well as reserving for certain contract related amounts recorded in other current liabilities and other expenses. Following the quarter end, the Company commenced a sale process for CPI and have reached an agreement to sell the business for a nominal sum in a transaction that is expected to close before the end of the year.
Recently Issued Accounting Standards Recently Issued Accounting Standards In August 2018, the FASB issued ASU No. 2018-14, Compensation — Retirement Benefits — Defined Benefit Plans — General (Subtopic 715-20): Disclosure Framework — Changes to the Disclosure Requirements for Defined Benefit Plans In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement at a minimum In February 2018, the FASB issued ASU No. 2018-02, Income Statement — Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (AOCI) On January 26, 2017, the FASB issued ASU No. 2017-04, Intangibles — Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment On January 5, 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business On November 17, 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash On February 25, 2016, FASB issued ASU No. 2016-02, Leases (Topic 842) Leases (Topic 842) Targeted Improvements The Company is in the process of completing its assessment of the overall impact and is currently planning for the adoption and implementation of ASU 2016-02. ASU 2016-02 will have a material impact on the Company’s consolidated balance sheets; however, the Company does not expect a material impact on its consolidated statements of operations. Further, the Company does not expect the standard to have a material impact on the accounting and reporting requirements for existing operating leases where the Company is the lessor as it expects to elect the practical expedient whereby the Company will not separate a qualifying contract into its lease and non-lease components. While the Company is continuing to assess potential impacts of the standard, it currently expects the most significant impact will be the recognition of ROU assets and lease liabilities for operating leases with original terms of over one year where the Company is the lessee. The Company will adopt ASU 2016-02 as of January 1, 2019 using the modified retrospective method as of the period of adoption rather than the earliest period presented. The Company is currently in the process of executing its implementation plan by installing a lease accounting technology system, gathering lease contracts and abstracting key financial data, and finalizing design of revisions needed to its processes and internal controls. The Company is also continuing to evaluate accounting policy options under the standard, including the use of the optional practical expedients, and evaluating the impact of implementing this guidance on its consolidated financial statements.

Income per Share (Tables)

Income per Share (Tables)9 Months Ended
Sep. 30, 2018
Earnings Per Share [Abstract]
Reconciliation of Earnings Income per Share Following is a reconciliation of the basic and diluted income per share computations ($ in thousands, except share and per share data): Quarter Ended Nine Months Ended 2018 2017 2018 2017 Numerator: Net income attributable to MIC $ 21,704 $ 40,095 $ 136,904 $ 102,130 Interest expense attributable to 2.875% Convertible Senior Notes due July 2019, net of taxes — 1,941 — — Diluted net income attributable to MIC $ 21,704 $ 42,036 $ 136,904 $ 102,130 Denominator: Weighted average number of shares outstanding: basic 85,378,088 83,644,806 85,095,956 82,743,285 Dilutive effect of restricted stock unit grants 20,478 9,435 13,257 9,515 Dilutive effect of 2.875% Convertible Senior Notes due July 2019 — 4,262,297 — — Weighted average number of shares outstanding: diluted 85,398,566 87,916,538 85,109,213 82,752,800 Income per share: Basic income per share attributable to MIC $ 0.25 $ 0.48 $ 1.61 $ 1.23 Diluted income per share attributable to MIC $ 0.25 $ 0.48 $ 1.61 $ 1.23
Schedule of Antidilutive Securities The following represents the weighted average potential dilutive shares of common stock that were excluded from the diluted income per share calculation: Quarter Ended Nine Months Ended 2018 2017 2018 2017 2.875% Convertible Senior Notes due July 2019 4,381,499 — 4,363,806 4,237,753 2.00% Convertible Senior Notes due October 2023 3,634,173 3,608,218 3,631,068 3,603,742 Total 8,015,672 3,608,218 7,994,874 7,841,495

Property, Equipment, Land and_2

Property, Equipment, Land and Leasehold Improvements (Tables)9 Months Ended
Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment Property, equipment, land and leasehold improvements at September 30, 2018 and December 31, 2017 consisted of the following ($ in thousands): September 30, (1) December 31, Land $ 319,266 $ 339,148 Easements 131 131 Buildings 39,933 41,776 Leasehold and land improvements 748,593 834,241 Machinery and equipment 3,486,263 4,092,624 Furniture and fixtures 41,956 39,386 Construction in progress 136,514 246,422 4,772,656 5,593,728 Less: accumulated depreciation (1,019,365 ) (934,114 ) Property, equipment, land and leasehold improvements, net $ 3,753,291 $ 4,659,614 (1) Property, equipment, land and leasehold improvements excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, “Basis of Presentation”, for further discussion.

Intangible Assets and Goodwill

Intangible Assets and Goodwill (Tables)9 Months Ended
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets Intangible assets at September 30, 2018 and December 31, 2017 consisted of the following ($ in thousands): September 30, (1) December 31, Contractual arrangements $ 932,219 $ 989,228 Non-compete agreements 14,014 14,014 Customer relationships 353,520 361,623 Leasehold rights 350 350 Trade names 16,091 16,091 Technology 8,760 8,760 1,324,954 1,390,066 Less: accumulated amortization (511,606 ) (475,968 ) Intangible assets, net $ 813,348 $ 914,098 (1) Intangible assets excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, “Basis of Presentation”, for further discussion.
Schedule of Goodwill The goodwill balance as of September 30, 2018 is comprised of the following ($ in thousands): Goodwill acquired in business combinations, net of disposals, at December 31, 2017 $ 2,193,478 Accumulated impairment charges (123,200 ) Other (1,610 ) Balance at December 31, 2017 2,068,668 Goodwill impairment (3,215 ) Other (25 ) Reclassification to assets held for sale (1) (21,628 ) Balance at September 30, 2018 $ 2,043,800 (1) Goodwill classified as held for sale related to BEC. See Note 2, “Basis of Presentation” for further discussion.

Long-Term Debt (Tables)

Long-Term Debt (Tables)9 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]
Schedule of Long-Term Debt At September 30, 2018 and December 31, 2017, the Company’s consolidated long-term debt balance comprised of the following ($ in thousands): September 30, (1) December 31, IMTT $ 1,325,975 $ 1,318,975 Atlantic Aviation 666,000 648,000 Contracted Power 313,154 576,558 MIC Hawaii 213,160 199,282 MIC Corporate 909,180 873,477 Total 3,427,469 3,616,292 Current portion (392,903 ) (50,835 ) Long-term portion 3,034,566 3,565,457 Unamortized deferred financing costs (2) (25,558 ) (35,146 ) Long-term portion less unamortized debt discount and deferred financing costs $ 3,009,008 $ 3,530,311 (1) Excludes the current and long-term portion of debt related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, “Basis of Presentation”, for further discussion. (2) The weighted average remaining life of the deferred financing costs at September 30, 2018 was 5.3 years.
Convertible Debt The 2.00% Convertible Senior Notes due October 2023 consisted of the following ($ in thousands): September 30, December 31, Liability Component: Principal $ 402,500 $ 402,500 Unamortized debt discount (19,765 ) (22,475 ) Long-term debt, net of unamortized debt discount 382,735 380,025 Unamortized deferred financing costs (7,515 ) (8,643 ) Net carrying amount $ 375,220 $ 371,382 Equity Component $ 26,748 $ 26,748
Schedule of Interest Expense Recognized For the quarters and nine months ended September 30, 2018 and 2017, total interest expense recognized related to the 2.00% Convertible Senior Notes due October 2023 consisted of the following ($ in thousands): Quarter Ended Nine Months Ended 2018 2017 2018 2017 Contractual interest expense $ 2,013 $ 2,012 $ 6,038 $ 5,769 Amortization of debt discount 910 882 2,710 2,377 Amortization of deferred financing costs 376 376 1,128 1,133 Total interest expense $ 3,299 $ 3,270 $ 9,876 $ 9,279

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)9 Months Ended
Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Fair Value of Derivative Instruments The Company’s fair value measurements of its derivative instruments and the related location of the assets and liabilities within the consolidated condensed balance sheets at September 30, 2018 and December 31, 2017 were ($ in thousands): Balance Sheet Location Assets (Liabilities) at Fair Value September 30, (1) December 31, Fair value of derivative instruments – current assets $ 17,510 $ 11,965 Fair value of derivative instruments – noncurrent assets 26,958 24,455 Total derivative contracts – assets $ 44,468 $ 36,420 Fair value of derivative instruments – current liabilities $ (534 ) $ (1,710 ) Fair value of derivative instruments – noncurrent liabilities (1,174 ) (4,668 ) Total derivative contracts – liabilities $ (1,708 ) $ (6,378 ) (1) Fair value of derivative instruments excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, “Basis of Presentation”, for further discussion.
Schedule of Location of Hedging Activities The Company’s hedging activities for the quarters and nine months ended September 30, 2018 and 2017 and the related location within the consolidated condensed statements of operations were ($ in thousands): Amount of Gain (Loss) Recognized in Consolidated Quarter ended Nine Months Ended Financial Statement Account 2018 2017 2018 2017 Interest expense – interest rate caps $ 1,469 $ (219 ) $ 8,470 $ (2,888 ) Interest expense – interest rate swaps 3,260 57 17,294 (4,051 ) Cost of product sales – commodity swaps 2,695 5,769 3,497 2,154 Total $ 7,424 $ 5,607 $ 29,261 $ (4,785 )

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)9 Months Ended
Sep. 30, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss Post-Retirement Translation (1) Total Stockholders’ Balance at December 31, 2016 $ (16,805 ) $ (12,155 ) $ (28,960 ) Translation adjustment — 2,738 2,738 Balance at September 30, 2017 $ (16,805 ) $ (9,417 ) $ (26,222 ) Balance at December 31, 2017 $ (20,456 ) $ (9,537 ) $ (29,993 ) Translation adjustment — (2,092 ) (2,092 ) Balance at September 30, 2018 $ (20,456 ) $ (11,629 ) $ (32,085 ) (1) Translation adjustment is presented net of tax benefit of $802,000 and net of tax expense of $1.9 million for the nine months ended September 30, 2018 and 2017, respectively.

Reportable Segments (Tables)

Reportable Segments (Tables)9 Months Ended
Sep. 30, 2018
Segment Reporting [Abstract]
Schedule of Revenue by Major Customers by Reporting Segments Revenue from external customers for the Company’s consolidated reportable segments were ($ in thousands): Quarter Ended September 30, 2018 IMTT Atlantic Contracted MIC Intersegment Total Service Revenue Terminal Services $ 19,385 $ — $ — $ — $ (22 ) $ 19,363 Lease 97,720 — — — (1,206 ) 96,514 Fuel — 172,513 — — — 172,513 Hangar — 21,958 — — — 21,958 Construction — — — 8,271 — 8,271 Other (1) 1,124 40,437 — 851 — 42,412 Total Service Revenue $ 118,229 $ 234,908 $ — $ 9,122 $ (1,228 ) $ 361,031 Product Revenue Lease $ — $ — $ 48,570 $ 1,311 $ — $ 49,881 Gas — — — 55,499 — 55,499 Other — — 3,880 2,989 — 6,869 Total Product Revenue $ — $ — $ 52,450 $ 59,799 $ — $ 112,249 Total Revenue $ 118,229 $ 234,908 $ 52,450 $ 68,921 $ (1,228 ) $ 473,280 Quarter Ended September 30, 2017 IMTT Atlantic Contracted MIC Intersegment Total Service Revenue Terminal Services $ 18,786 $ — $ — $ — $ (21 ) $ 18,765 Lease 106,096 — — — (1,209 ) 104,887 Fuel — 152,620 — — — 152,620 Hangar — 19,820 — — — 19,820 Construction — — — 13,526 — 13,526 Other (1) 9,285 39,017 — 300 — 48,602 Total Service Revenue $ 134,167 $ 211,457 $ — $ 13,826 $ (1,230 ) $ 358,220 Product Revenue Lease $ — $ — $ 38,822 $ 741 $ — $ 39,563 Gas — — — 48,877 — 48,877 Other — — 3,623 2,778 — 6,401 Total Product Revenue $ — $ — $ 42,445 $ 52,396 $ — $ 94,841 Total Revenue $ 134,167 $ 211,457 $ 42,445 $ 66,222 $ (1,230 ) $ 453,061 (1) See Note 3, “Implementation of ASU 2014-09”, for revenues disclosed in Other. Nine Months Ended September 30, 2018 IMTT Atlantic Contracted MIC Intersegment Total Segments Service Revenue Terminal Services $ 66,719 $ — $ — $ — $ (22 ) $ 66,697 Lease 303,633 — — — (3,669 ) 299,964 Fuel — 523,867 — — — 523,867 Hangar — 65,515 — — — 65,515 Construction — — — 38,478 — 38,478 Other (1) 16,629 125,659 — 2,828 — 145,116 Total Service Revenue $ 386,981 $ 715,041 $ — $ 41,306 $ (3,691 ) $ 1,139,637 Product Revenue Lease $ — $ — $ 117,596 $ 3,410 $ — $ 121,006 Gas — — — 172,206 — 172,206 Other — — 11,544 8,523 — 20,067 Total Product Revenue $ — $ — $ 129,140 $ 184,139 $ — $ 313,279 Total Revenue $ 386,981 $ 715,041 $ 129,140 $ 225,445 $ (3,691 ) $ 1,452,916 Nine Months Ended September 30, 2017 IMTT Atlantic Contracted MIC Intersegment Total Service Revenue Terminal Services $ 61,791 $ — $ — $ — $ (21 ) $ 61,770 Lease 323,147 — — — (3,663 ) 319,484 Fuel — 449,486 — — — 449,486 Hangar — 56,672 — — — 56,672 Construction — — — 38,546 — 38,546 Other (1) 25,190 114,991 — 930 — 141,111 Total Service Revenue $ 410,128 $ 621,149 $ — $ 39,476 $ (3,684 ) $ 1,067,069 Product Revenue Lease $ — $ — $ 99,849 $ 2,165 $ — $ 102,014 Gas — — — 155,098 — 155,098 Other — — 10,832 8,495 — 19,327 Total Product Revenue $ — $ — $ 110,681 $ 165,758 $ — $ 276,439 Total Revenue $ 410,128 $ 621,149 $ 110,681 $ 205,234 $ (3,684 ) $ 1,343,508 (1) See Note 3, “Implementation of ASU 2014-09”, for revenues disclosed in Other.
Schedule of EBITDA for Reportable Segments Allocations of corporate expenses, intercompany fees and the tax effect have been excluded as they are eliminated in consolidation. Quarter Ended September 30, 2018 IMTT Atlantic Contracted MIC Total Net income (loss) $ 16,432 $ 24,735 $ 18,128 $ (17,958 ) $ 41,337 Interest expense, net 11,677 5,290 4,944 2,069 23,980 Provision (benefit) for income taxes 6,422 9,058 7,852 (7,299 ) 16,033 Goodwill impairment — — — 3,215 3,215 Depreciation 28,804 14,400 7,848 5,698 56,750 Amortization of intangibles 3,879 11,182 178 4,791 20,030 Pension expense 1,914 5 — 128 2,047 Other non-cash expense (income) 207 323 (1,574 ) 4,303 3,259 EBITDA excluding non-cash items $ 69,335 $ 64,993 $ 37,376 $ (5,053 ) $ 166,651 Quarter Ended September 30, 2017 IMTT Atlantic Contracted MIC Total Net income $ 20,755 $ 21,591 $ 7,251 $ 6,160 $ 55,757 Interest expense, net 10,187 4,295 6,281 1,877 22,640 Provision for income taxes 14,422 11,139 6,337 4,830 36,728 Depreciation 28,001 12,954 13,724 3,330 58,009 Amortization of intangibles 3,510 12,332 1,106 381 17,329 Pension expense 1,883 5 — 272 2,160 Other non-cash expense (income) 178 1,212 (1,914 ) (3,360 ) (3,884 ) EBITDA excluding non-cash items $ 78,936 $ 63,528 $ 32,785 $ 13,490 $ 188,739 Nine Months Ended September 30, 2018 IMTT Atlantic Contracted MIC Total Net income (loss) $ 61,909 $ 78,566 $ 35,456 $ (12,344 ) $ 163,587 Interest expense, net 30,349 9,601 10,661 5,246 55,857 Provision (benefit) for income taxes 24,195 28,769 12,456 (4,350 ) 61,070 Goodwill impairment — — — 3,215 3,215 Depreciation 87,066 43,143 35,680 12,975 178,864 Amortization of intangibles 11,636 34,877 2,392 6,565 55,470 Pension expense 5,737 16 — 383 6,136 Other non-cash expense (income) 611 1,232 (5,152 ) 9,548 6,239 EBITDA excluding non-cash items $ 221,503 $ 196,204 $ 91,493 $ 21,238 $ 530,438 Nine Months Ended September 30, 2017 IMTT Atlantic Contracted MIC Total Net income $ 67,184 $ 60,225 $ 9,604 $ 16,004 $ 153,017 Interest expense, net 30,707 13,648 20,431 5,795 70,581 Provision for income taxes 46,686 36,766 8,209 10,772 102,433 Depreciation 84,797 36,468 41,711 9,777 172,753 Amortization of intangibles 9,029 37,426 3,320 1,145 50,920 Pension expense 5,649 15 — 817 6,481 Other non-cash expense (income) 315 1,252 (6,170 ) 3,108 (1,495 ) EBITDA excluding non-cash items $ 244,367 $ 185,800 $ 77,105 $ 47,418 $ 554,690 Reconciliations of total reportable segments’ EBITDA excluding non-cash items to consolidated net income before income taxes were ($ in thousands): Quarter Ended Nine Months Ended 2018 2017 2018 2017 Total reportable segments EBITDA excluding non-cash items $ 166,651 $ 188,739 $ 530,438 $ 554,690 Interest income 113 54 304 129 Interest expense (32,616 ) (29,291 ) (81,693 ) (90,129 ) Goodwill impairment (3,215 ) — (3,215 ) — Depreciation (56,924 ) (58,009 ) (179,368 ) (172,753 ) Amortization of intangibles (20,030 ) (17,329 ) (55,470 ) (50,920 ) Selling, general and administrative expenses – Corporate and Other (7,150 ) (6,214 ) (21,496 ) (21,301 ) Fees to Manager-related party (12,333 ) (17,954 ) (36,113 ) (54,610 ) Pension expense (2,047 ) (2,160 ) (6,136 ) (6,481 ) Other (expense) income, net (3,189 ) 3,884 (6,243 ) 1,495 Total consolidated net income before income taxes $ 29,260 $ 61,720 $ 141,008 $ 160,120
Schedule of Capital Expenditures Capital expenditures, on a cash basis, for the Company’s reportable segments were ($ in thousands): Quarter Ended Nine Months Ended 2018 2017 2018 2017 IMTT $ 17,454 $ 20,232 $ 41,786 $ 52,291 Atlantic Aviation 15,187 23,661 51,634 57,757 Contracted Power 8,501 50,461 42,702 99,961 MIC Hawaii 6,729 7,604 17,398 21,054 Total capital expenditures of reportable segments $ 47,871 $ 101,958 $ 153,520 $ 231,063 Corporate and other 1,336 2,524 5,517 3,770 Total consolidated capital expenditures $ 49,207 $ 104,482 $ 159,037 $ 234,833
Schedule of Reconciliation of Assets of Reportable Segments Property, equipment, land and leasehold improvements, net, goodwill and total assets for the Company’s reportable segments and its reconciliation to consolidated total assets were ($ in thousands): Property, Equipment, Goodwill Total Assets September 30, December 31, September 30, December 31, September 30, December 31, IMTT $ 2,254,203 $ 2,305,440 $ 1,427,588 $ 1,427,863 $ 4,027,790 $ 4,109,448 Atlantic Aviation 568,741 559,597 496,019 495,769 1,694,075 1,710,535 Contracted Power 625,412 1,466,139 — 21,628 704,429 1,617,658 MIC Hawaii 298,861 302,220 120,193 123,408 529,285 532,144 Total assets of reportable segments $ 3,747,217 $ 4,633,396 $ 2,043,800 $ 2,068,668 $ 6,955,579 $ 7,969,785 Corporate and other 6,074 26,218 — — 10,957 39,166 Assets held for sale (1) — — — — 971,934 — Total consolidated assets $ 3,753,291 $ 4,659,614 $ 2,043,800 $ 2,068,668 $ 7,938,470 $ 8,008,951 (1) At September 30, 2018, Property, Equipment, Land and Leasehold Improvements, net, and Goodwill excludes balances related to BEC, which were classified as held for sale. See Note 2, “Basis of Presentation”, for further discussion.

Long-Term Contracted Revenue (T

Long-Term Contracted Revenue (Tables)9 Months Ended
Sep. 30, 2018
Contractors [Abstract]
Schedule of Financing Receivables, Minimum Payments Lease Contract Total 2018 remaining $ 87,187 $ 21,102 $ 108,289 2019 236,685 49,066 285,751 2020 126,915 33,459 160,374 2021 65,912 27,176 93,088 2022 44,422 23,016 67,438 2023 29,196 15,718 44,914 Thereafter 51,356 16,058 67,414 Total $ 641,673 $ 185,595 $ 827,268

Related Party Transactions (Tab

Related Party Transactions (Tables)9 Months Ended
Sep. 30, 2018
Related Party Transactions [Abstract]
Schedule of Dividends Paid to Manager Since January 1, 2017, the Company paid the Manager cash dividends on shares held for the following periods: Declared Period Covered $ per Share Record Date Payable Date Cash Paid to October 30, 2018 Third quarter 2018 $ 1.00 November 12, 2018 November 15, 2018 (1) July 31, 2018 Second quarter 2018 1.00 August 13, 2018 August 16, 2018 $ 10,711 May 1, 2018 First quarter 2018 1.00 May 14, 2018 May 17, 2018 6,213 February 19, 2018 Fourth quarter 2017 1.44 March 5, 2018 March 8, 2018 8,067 October 30, 2017 Third quarter 2017 1.42 November 13, 2017 November 16, 2017 7,484 August 1, 2017 Second quarter 2017 1.38 August 14, 2017 August 17, 2017 6,941 May 2, 2017 First quarter 2017 1.32 May 15, 2017 May 18, 2017 6,332 February 17, 2017 Fourth quarter 2016 1.31 March 3, 2017 March 8, 2017 6,080 (1) The amount of dividend payable to the Manager for the third quarter of 2018 will be determined on November 12, 2018, the record date.
Schedule of Base Management Fees and Performance Fees The unpaid portion of the base management fees and performance fees, if any, at the end of each reporting period is included in Due to Manager-related party Period Base Management Performance Shares 2018 Activities: Third quarter 2018 $ 12,333 $ — 269,286 (1) Second quarter 2018 10,852 — 277,053 First quarter 2018 12,928 — 265,002 2017 Activities: Fourth quarter 2017 $ 16,778 $ — 248,162 Third quarter 2017 17,954 — 240,674 Second quarter 2017 18,433 — 233,394 First quarter 2017 18,223 — 232,398 (1) The Manager elected to reinvest all of the monthly base management fees for the third quarter of 2018 in shares. The Company issued 269,286 shares for the quarter ended September 30, 2018, including 89,542 shares that were issued in October 2018 for the September 2018 monthly base management fee.

Organization and Description _2

Organization and Description of Business (Narrative) (Details)Sep. 30, 2018Item
Canada- IMTT [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of marine terminals2
United States- IMTT [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of marine terminals17
Atlantic Aviation [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of Airport Locations70

Basis of Presentation (Narrativ

Basis of Presentation (Narrative) (Details) - USD ($) $ in ThousandsOct. 12, 2018Jul. 27, 2018Sep. 30, 2018Oct. 31, 2018Dec. 31, 2017
Significant Accounting Policies [Line Items]
Disposal Group, Including Discontinued Operation, Assets, Current[1] $ 971,934 $ 0
Disposal Group, Including Discontinued Operation, Liabilities, Current[1]299,659 $ 0
Bayonne Energy Center [Member]
Significant Accounting Policies [Line Items]
Disposal Group, Including Discontinued Operation, Assets, Current971,900
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Current845,000
Disposal Group, Including Discontinued Operation, Liabilities, Current299,700
Disposal Group, Including Discontinued Operation, Intangible Assets, Current50,000
Disposal Group Including Discontinued Operation, Liabilities Long Term Debt243,500
Percentage Of Business Sold100.00%
Disposal Group, Including Discontinued Operation, Goodwill, Current20,000
Business Acquisition, Transaction Costs3,000
Critchfield Pacific Inc.
Significant Accounting Policies [Line Items]
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down30,000
Critchfield Pacific Inc. | Fixed Assets and Intangible Assets [Member]
Significant Accounting Policies [Line Items]
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down $ 9,000
Subsequent Event [Member] | Bayonne Energy Center [Member]
Significant Accounting Policies [Line Items]
Cash Consideration From Divestiture Of Businesses $ 657,400
Debt Assumed By Buyer From Divestiture Of Business243,500
Pre Tax Gain On Divestiture Of Business $ 5,000
Business Acquisition, Transaction Costs $ 10,000
[1]See Note 2, "Basis of Presentation", for further discussion on assets and liabilities held for sale.

Implementation of ASU 2014-09 (

Implementation of ASU 2014-09 (Narrative) (Details)9 Months Ended
Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Weighted Average Remaining Contract Life2 years
Maximum [Member] | Contracted Power [Member]
Disaggregation of Revenue [Line Items]
Contract Duration25 years
Minimum [Member] | Contracted Power [Member]
Disaggregation of Revenue [Line Items]
Contract Duration20 years

Income per Share (Narrative) (D

Income per Share (Narrative) (Details)1 Months Ended3 Months Ended9 Months Ended
Sep. 30, 2016sharesSep. 30, 2018sharesSep. 30, 2017sharesSep. 30, 2018sharesSep. 30, 2017sharesSep. 05, 2018Number
Class of Stock [Line Items]
Restricted stock unit grants forfeited2,151
Independent Directors appointed | Number2
Restricted Stock Unit Grants May 18, 2016 [Member]
Class of Stock [Line Items]
Potentially dilutive shares8,604
Restricted Stock Unit Grants November 1, 2016 [Member]
Class of Stock [Line Items]
Potentially dilutive shares991
2.875% Convertible Senior Notes due July 2019 [Member] | MIC Corporate [Member] | Dilutive [Member]
Class of Stock [Line Items]
Interest rate2.875%2.875%
MaturityJul. 31,
2019
2.875% Convertible Senior Notes due July 2019 [Member] | MIC Corporate [Member] | Anti-Dilutive [Member]
Class of Stock [Line Items]
Interest rate2.875%2.875%2.875%2.875%
MaturityJul. 31,
2019
Jul. 31,
2019
Jul. 31,
2019
2.00% Convertible senior notes due October 2023 [Member] | MIC Corporate [Member] | Anti-Dilutive [Member]
Class of Stock [Line Items]
Interest rate2.00%2.00%2.00%2.00%
MaturityOct. 31,
2023
Oct. 31,
2023
Oct. 31,
2023
Oct. 31,
2023
Restricted stock unit grants May 17, 2017 [Member]
Class of Stock [Line Items]
Potentially dilutive shares9,435 9,435 9,435
Restricted stock unit grants June 07, 2018 [Member]
Class of Stock [Line Items]
Potentially dilutive shares19,230
Restricted stock unit grants June 07, 2018 [Member]
Class of Stock [Line Items]
Potentially dilutive shares19,230
Restricted stock unit grants September 5, 2018 [Member]
Class of Stock [Line Items]
Potentially dilutive shares4,416 4,416

Income per Share (Schedule of R

Income per Share (Schedule of Reconciliation of the basic and diluted income (loss) per share computations (Details) - USD ($) $ / shares in Units, $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Numerator:
Net income attributable to MIC $ 21,704 $ 40,095 $ 136,904 $ 102,130
Diluted net income attributable to MIC $ 21,704 $ 42,036 $ 136,904 $ 102,130
Denominator:
Weighted average number of shares outstanding: basic85,378,088 83,644,806 85,095,956 82,743,285
Dilutive effect of restricted stock unit grants20,478 9,435 13,257 9,515
Weighted average number of shares outstanding: diluted85,398,566 87,916,538 85,109,213 82,752,800
Income per share:
Basic income per share attributable to MIC $ 0.25 $ 0.48 $ 1.61 $ 1.23
Diluted income per share attributable to MIC $ 0.25 $ 0.48 $ 1.61 $ 1.23
2.875% Convertible Senior Notes July 2019 [Member]
Numerator:
Interest expense attributable to convertible senior notes, net of taxes $ 0 $ 1,941 $ 0 $ 0
Denominator:
Dilutive effect of convertible senior notes0 4,262,297 0 0

Income per Share (Schedule of S

Income per Share (Schedule of Shares Excluded from Calculation) (Details) - shares3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities8,015,672 3,608,218 7,994,874 7,841,495
2.875% Convertible Senior Notes due July 2019 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities4,381,499 0 4,363,806 4,237,753
2.00% Convertible Senior Notes due October 2023 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities3,634,173 3,608,218 3,631,068 3,603,742

Property, Equipment, Land and_3

Property, Equipment, Land and Leasehold Improvements (Schedule of Property and Equipment) (Details) - USD ($) $ in ThousandsSep. 30, 2018[1]Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Land $ 319,266 $ 339,148
Easements131 131
Buildings39,933 41,776
Leasehold and land improvements748,593 834,241
Machinery and equipment3,486,263 4,092,624
Furniture and fixtures41,956 39,386
Construction in progress136,514 246,422
Property, Plant and Equipment, Gross, Total4,772,656 5,593,728
Less: accumulated depreciation(1,019,365)(934,114)
Property, equipment, land and leasehold improvements, net $ 3,753,291 $ 4,659,614
[1]Property, equipment, land and leasehold improvements excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.

Intangible Assets and Goodwil_2

Intangible Assets and Goodwill (Narrative) (Details) $ in Millions9 Months Ended
Sep. 30, 2018USD ($)
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount $ 2,200
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount36.00%
IMTT [Member]
Increase in Fair Value Of Net Assets $ 20
Percentage increase in discount rate0.25%
Change in fair value from goodwill sensitivity $ 80
Hawaii Gas Company [Member]
Increase in Fair Value Of Net Assets250
Atlantic Aviation [Member]
Increase in Fair Value Of Net Assets $ 2,000

Intangible Assets and Goodwil_3

Intangible Assets and Goodwill (Schedule of Intangible Assets) (Details) - USD ($) $ in ThousandsSep. 30, 2018[1]Dec. 31, 2017
Intangible Assets [Line Items]
Contractual arrangements $ 932,219 $ 989,228
Non-compete agreements14,014 14,014
Customer relationships353,520 361,623
Leasehold rights350 350
Trade names16,091 16,091
Technology8,760 8,760
Intangible assets, gross1,324,954 1,390,066
Less: accumulated amortization(511,606)(475,968)
Intangible assets, net $ 813,348 $ 914,098
[1]Intangible assets excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.

Intangible Assets and Goodwil_4

Intangible Assets and Goodwill (Schedule of Goodwill) (Details) - USD ($) $ in Thousands3 Months Ended9 Months Ended12 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017[1]Dec. 31, 2017
Intangible Assets [Abstract]
Goodwill acquired in business combinations, net of disposals, at December 31, 2017 $ 2,193,478
Accumulated impairment charges(123,200)
Balance $ 2,068,668
Goodwill impairment $ (3,215) $ 0 (3,215) $ 0
Other(25)(1,610)
Reclassification to assets held for sale[2](21,628)(21,628)
Balance $ 2,043,800 $ 2,043,800 $ 2,068,668
[1]Conformed to current period presentation. See Note 2, "Basis of Presentation", for Recently Issued Accounting Standards adopted during the nine months ended September 30, 2018.
[2]Goodwill classified as held for sale related to BEC. See Note 2, "Basis of Presentation" for further discussion.

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details)Oct. 13, 2018USD ($)Oct. 12, 2018USD ($)Jul. 15, 2018USD ($)Oct. 31, 2018USD ($)Feb. 28, 2018USD ($)Jan. 31, 2018USD ($)Sep. 30, 2018USD ($)Dec. 31, 2017USD ($)
Debt Disclosure [Line Items]
Current and long-term debt $ 3,427,469,000 [1] $ 3,616,292,000
Letters of Credit37,800,000
MIC Corporate [Member]
Debt Disclosure [Line Items]
Current and long-term debt909,180,000 [1]873,477,000
Atlantic Aviation [Member]
Debt Disclosure [Line Items]
Current and long-term debt666,000,000 [1]648,000,000
IMTT [Member]
Debt Disclosure [Line Items]
Current and long-term debt1,325,975,000 [1]1,318,975,000
Contracted Power [Member]
Debt Disclosure [Line Items]
Current and long-term debt313,154,000 [1]576,558,000
Contracted Power [Member] | Fixed Rate Term Loan Facility [Member]
Debt Disclosure [Line Items]
Current and long-term debt180,900,000
Debt Instrument, Fair Value Disclosure180,000,000
Bayonne Energy Center [Member] | Subsequent Event [Member]
Debt Disclosure [Line Items]
Debt Assumed By Buyer From Divestiture Of Business $ 243,500,000
Cash Consideration From Divestiture Of Businesses $ 657,400,000
Revolving Credit Facility [Member]
Debt Disclosure [Line Items]
Undrawn portion of line of credit930,500,000
Revolving Credit Facility [Member] | MIC Corporate [Member]
Debt Disclosure [Line Items]
Current and long-term debt176,500,000 143,500,000
Undrawn portion of line of credit423,500,000
Borrowing capacity $ 600,000,000 410,000,000
Repayment of revolving credit facility172,500,000
Borrowings of revolving credit facility205,500,000
MaturityJan. 3,
2022
Revolving Credit Facility [Member] | MIC Corporate [Member] | Subsequent Event [Member]
Debt Disclosure [Line Items]
Repayment of revolving credit facility $ 150,000,000
Revolving Credit Facility [Member] | Atlantic Aviation [Member]
Debt Disclosure [Line Items]
Current and long-term debt291,000,000 258,000,000
Undrawn portion of line of credit59,000,000
Borrowings of revolving credit facility33,000,000
Revolving Credit Facility [Member] | Atlantic Aviation [Member] | Subsequent Event [Member]
Debt Disclosure [Line Items]
Repayment of revolving credit facility291,000,000
Revolving Credit Facility [Member] | Hawaii Gas Business [Member]
Debt Disclosure [Line Items]
Current and long-term debt15,000,000
Undrawn portion of line of credit45,000,000
Borrowing capacity $ 60,000,000
Repayment of revolving credit facility5,000,000
Borrowings of revolving credit facility20,000,000
MaturityFeb. 28,
2023
Revolving Credit Facility [Member] | Hawaii Gas Business [Member] | Subsequent Event [Member]
Debt Disclosure [Line Items]
Repayment of revolving credit facility15,000,000
Revolving Credit Facility [Member] | IMTT [Member]
Debt Disclosure [Line Items]
Current and long-term debt217,000,000 210,000,000
Revolving Credit Facility [Member] | IMTT [Member] | Subsequent Event [Member]
Debt Disclosure [Line Items]
Repayment of revolving credit facility $ 217,000,000
Revolving Credit Facility [Member] | United States - IMTT [Member]
Debt Disclosure [Line Items]
Repayment of revolving credit facility10,000,000
Borrowings of revolving credit facility17,000,000
Revolving Credit Facility [Member] | United States- IMTT [Member]
Debt Disclosure [Line Items]
Undrawn portion of line of credit333,000,000
Revolving Credit Facility [Member] | Canada- IMTT [Member]
Debt Disclosure [Line Items]
Undrawn portion of line of credit50,000,000
Term Loan Facility [Member] | Hawaii Gas Business [Member]
Debt Disclosure [Line Items]
Borrowing capacity $ 80,000,000
MaturityFeb. 28,
2023
Senior Notes [Member] | Hawaii Gas Business [Member]
Debt Disclosure [Line Items]
Current and long-term debt100,000,000
Debt Instrument, Fair Value Disclosure100,000,000
Senior Notes [Member] | IMTT [Member]
Debt Disclosure [Line Items]
Current and long-term debt600,000,000
Debt Instrument, Fair Value Disclosure585,000,000
2.875% Convertible Senior Notes due July 2019 [Member] | MIC Corporate [Member]
Debt Disclosure [Line Items]
Current and long-term debt $ 350,000,000 350,000,000
Debt instrument, term5 years
Conversion rate12.5258
Face value of convertible senior notes $ 1,000
Interest Rate2.875%
MaturityJul. 31,
2019
Fair value of Convertible senior notes $ 348,000,000
2.00% Convertible Senior Notes due October 2023 [Member] | MIC Corporate [Member]
Debt Disclosure [Line Items]
Current and long-term debt $ 375,200,000 $ 371,400,000
Debt instrument, term7 years
Interest Rate2.00%
MaturityOct. 31,
2023
Fair value of Convertible senior notes $ 345,000,000
2.00% Convertible Senior Notes due October 2023 [Member] | MIC Corporate [Member] | Subsequent Event [Member]
Debt Disclosure [Line Items]
Conversion rate9.0290
Face value of convertible senior notes $ 1,000
[1]Excludes the current and long-term portion of debt related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.

Long-Term Debt (Schedule of Lon

Long-Term Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands9 Months Ended
Sep. 30, 2018Dec. 31, 2017
Debt Instrument [Line Items]
Current and long-term Debt $ 3,427,469 [1] $ 3,616,292
Current portion(392,903)[1](50,835)
Long-term portion3,034,566 [1]3,565,457
Unamortized deferred financing costs[2](25,558)[1](35,146)
Long-term portion less unamortized debt discount and deferred financing costs $ 3,009,008 [1]3,530,311
Weighted Average Remaining Life Of Deferred Financing Costs5.3 years
IMTT [Member]
Debt Instrument [Line Items]
Current and long-term Debt $ 1,325,975 [1]1,318,975
Atlantic Aviation [Member]
Debt Instrument [Line Items]
Current and long-term Debt666,000 [1]648,000
Contracted Power [Member]
Debt Instrument [Line Items]
Current and long-term Debt313,154 [1]576,558
MIC Hawaii [Member]
Debt Instrument [Line Items]
Current and long-term Debt213,160 [1]199,282
MIC Corporate [Member]
Debt Instrument [Line Items]
Current and long-term Debt $ 909,180 [1] $ 873,477
[1]Excludes the current and long-term portion of debt related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.
[2]The weighted average remaining life of the deferred financing costs at September 30, 2018 was 5.3 years.

Long-Term Debt (Schedule of 2.0

Long-Term Debt (Schedule of 2.00% Convertible Senior Notes Due October 2023) (Details) - USD ($) $ in Thousands9 Months Ended12 Months Ended
Sep. 30, 2018Dec. 31, 2017
Long-term debt, net of unamortized debt discount $ 3,427,469 [1] $ 3,616,292
Unamortized deferred financing costs[2](25,558)[1](35,146)
Net carrying amount3,009,008 [1]3,530,311
MIC Corporate [Member]
Long-term debt, net of unamortized debt discount909,180 [1]873,477
MIC Corporate [Member] | 2.00% Convertible Senior Notes due October 2023 [Member]
Principal402,500 402,500
Unamortized debt discount(19,765)(22,475)
Long-term debt, net of unamortized debt discount382,735 380,025
Unamortized deferred financing costs(7,515)(8,643)
Net carrying amount375,220 371,382
Equity Component $ 26,748 $ 26,748
[1]Excludes the current and long-term portion of debt related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.
[2]The weighted average remaining life of the deferred financing costs at September 30, 2018 was 5.3 years.

Long-Term Debt (Schedule of Tot

Long-Term Debt (Schedule of Total Interest Expense Recognized) (Details) - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Debt Instrument [Line Items]
Amortization of debt discount $ 2,710 $ 2,377 [1]
Amortization of deferred financing costs7,430 6,464 [1]
Total interest expense[2] $ 32,616 $ 29,291 81,693 90,129
MIC Corporate [Member] | 2.00% Convertible Senior Notes due October 2023 [Member]
Debt Instrument [Line Items]
Contractual interest expense2,013 2,012 6,038 5,769
Amortization of debt discount910 882 2,710 2,377
Amortization of deferred financing costs376 376 1,128 1,133
Total interest expense $ 3,299 $ 3,270 $ 9,876 $ 9,279
[1]Conformed to current period presentation. See Note 2, "Basis of Presentation", for Recently Issued Accounting Standards adopted during the nine months ended September 30, 2018.
[2]Interest expense includes gains on derivative instruments of $4.8 million and $25.8 million for the quarter and nine months ended September 30, 2018, respectively. For the quarter and nine months ended September 30, 2017, interest expense includes losses on derivative instruments of $162,000 and $6.9 million, respectively.

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities (Narrative) (Details) $ in MillionsSep. 30, 2018USD ($)
Derivative [Line Items]
Long-term Debt, Gross $ 3,400
Fixed rate debt1,600
Unhedged debt758.7
Interest Rate Contracts [Member]
Derivative [Line Items]
Debt economically hedged with interest rate contracts $ 1,100

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities (Schedule of Fair Value of Derivative Instruments) (Details) - USD ($) $ in ThousandsSep. 30, 2018[1]Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments - current assets $ 17,510 $ 11,965
Fair value of derivative instruments - noncurrent assets26,958 24,455
Total derivative contracts - assets44,468 36,420
Fair value of derivative instruments - current liabilities(534)(1,710)
Fair value of derivative instruments - noncurrent liabilities(1,174)(4,668)
Total derivative contracts - liabilities $ (1,708) $ (6,378)
[1]Fair value of derivative instruments excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities (Schedule of Location of Hedging Activities) (Details) - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on derivative instruments $ 7,424 $ 5,607 $ 29,261 $ (4,785)
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on derivative instruments4,800 (162)25,800 (6,900)
Interest Expense [Member] | Interest Rate Cap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on derivative instruments1,469 (219)8,470 (2,888)
Interest Expense [Member] | Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on derivative instruments3,260 57 17,294 (4,051)
Cost of product sales [Member] | Commodity swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on derivative instruments $ 2,695 $ 5,769 $ 3,497 $ 2,154

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details)May 18, 2016shares
Omnibus Employee Incentive Plan 2016 [Member]
Shares Activity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized500,000

Stockholders' Equity (Schedule

Stockholders' Equity (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance $ 3,350,703
Translation adjustment[1] $ 1,381 $ 1,641 (2,092) $ 2,738
Balance3,195,912 3,195,912
Translation adjustment, taxes(515)(1,100)802 (1,900)
Post-Retirement Benefit Plans, net of taxes
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance(20,456)(16,805)
Translation adjustment0 0
Balance(20,456)(16,805)(20,456)(16,805)
Translation Adjustment, net of taxes
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance[2](9,537)(12,155)
Translation adjustment[2](2,092)2,738
Balance[2](11,629)(9,417)(11,629)(9,417)
Total Stockholders' Accumulated Other Comprehensive Loss, net of taxes
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance(29,993)(28,960)
Translation adjustment(2,092)2,738
Balance $ (32,085) $ (26,222) $ (32,085) $ (26,222)
[1]Translation adjustment is presented net of tax expense of $515,000 and tax benefit of $802,000 for the quarter and nine months ended September 30, 2018, respectively. For the quarter and nine months ended September 30, 2017, translation adjustment is presented net of tax expense of $1.1 million and $1.9 million, respectively.
[2]Translation adjustment is presented net of tax benefit of $802,000 and net of tax expense of $1.9 million for the nine months ended September 30, 2018 and 2017, respectively.

Reportable Segments (Narrative)

Reportable Segments (Narrative) (Details) $ in Millions9 Months Ended
Sep. 30, 2018ItemMWOct. 12, 2018USD ($)MW
Segment Reporting Information [Line Items]
Number of reportable segments4
Canada- IMTT [Member]
Segment Reporting Information [Line Items]
Number of marine terminals2
Canada- IMTT [Member] | Quebec Marine Terminal [Member]
Segment Reporting Information [Line Items]
Number of marine terminals1
Canada- IMTT [Member] | Newfoundland Marine Terminal [Member] | Partially Owned [Member]
Segment Reporting Information [Line Items]
Number of marine terminals1
Atlantic Aviation [Member]
Segment Reporting Information [Line Items]
Number of Airport Locations | Item70
Contracted Power [Member]
Segment Reporting Information [Line Items]
Equity interest acquired100.00%
Number of solar projects7
Number of wind power facilities2
United States- IMTT [Member]
Segment Reporting Information [Line Items]
Number of marine terminals17
MIC Hawaii [Member]
Segment Reporting Information [Line Items]
Number of solar projects2
Bayonne Energy Center [Member] | Subsequent Event [Member]
Segment Reporting Information [Line Items]
Electricity generating capacity | MW644
Equity interest acquired100.00%
Percentage of contracted tolling agreement50.00%
Cash Consideration From Divestiture Of Businesses | $ $ 657.4
Debt Assumed By Buyer From Divestiture Of Business | $ $ 243.5
Solar and Wind Power Facilities [Member] | Contracted Power [Member]
Segment Reporting Information [Line Items]
Electricity generating capacity | MW345

Reportable Segments (Revenue fr

Reportable Segments (Revenue from external customers for the Company's consolidated reportable segments) (Details) - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Service Revenue
Total Service Revenue $ 361,031 $ 358,220 $ 1,139,637 $ 1,067,069
Product Revenue
Total Product Revenue112,249 94,841 313,279 276,439
Total Revenue473,280 453,061 1,452,916 1,343,508
International Matex Tank Terminals [Member]
Service Revenue
Total Service Revenue118,229 134,167 386,981 410,128
Product Revenue
Total Product Revenue0 0 0 0
Total Revenue118,229 134,167 386,981 410,128
Atlantic Aviation [Member]
Service Revenue
Total Service Revenue234,908 211,457 715,041 621,149
Product Revenue
Total Product Revenue0 0 0 0
Total Revenue234,908 211,457 715,041 621,149
Contracted Power [Member]
Service Revenue
Total Service Revenue0 0 0 0
Product Revenue
Total Product Revenue52,450 42,445 129,140 110,681
Total Revenue52,450 42,445 129,140 110,681
MIC Hawaii [Member]
Service Revenue
Total Service Revenue9,122 13,826 41,306 39,476
Product Revenue
Total Product Revenue59,799 52,396 184,139 165,758
Total Revenue68,921 66,222 225,445 205,234
Intersegment Revenue [Member]
Service Revenue
Total Service Revenue(1,228)(1,230)(3,691)(3,684)
Product Revenue
Total Product Revenue0 0 0 0
Total Revenue(1,228)(1,230)(3,691)(3,684)
Terminal Services [Member]
Service Revenue
Total Service Revenue19,363 18,765 66,697 61,770
Terminal Services [Member] | International Matex Tank Terminals [Member]
Service Revenue
Total Service Revenue19,385 18,786 66,719 61,791
Terminal Services [Member] | Atlantic Aviation [Member]
Service Revenue
Total Service Revenue0 0 0 0
Terminal Services [Member] | Contracted Power [Member]
Service Revenue
Total Service Revenue0 0 0 0
Terminal Services [Member] | MIC Hawaii [Member]
Service Revenue
Total Service Revenue0 0 0 0
Terminal Services [Member] | Intersegment Revenue [Member]
Service Revenue
Total Service Revenue(22)(21)(22)(21)
Fuel [Member]
Service Revenue
Total Service Revenue172,513 152,620 523,867 449,486
Fuel [Member] | International Matex Tank Terminals [Member]
Service Revenue
Total Service Revenue0 0 0 0
Fuel [Member] | Atlantic Aviation [Member]
Service Revenue
Total Service Revenue172,513 152,620 523,867 449,486
Fuel [Member] | Contracted Power [Member]
Service Revenue
Total Service Revenue0 0 0 0
Fuel [Member] | MIC Hawaii [Member]
Service Revenue
Total Service Revenue0 0 0 0
Fuel [Member] | Intersegment Revenue [Member]
Service Revenue
Total Service Revenue0 0 0 0
Hangar [Member]
Service Revenue
Total Service Revenue21,958 19,820 65,515 56,672
Hangar [Member] | International Matex Tank Terminals [Member]
Service Revenue
Total Service Revenue0 0 0 0
Hangar [Member] | Atlantic Aviation [Member]
Service Revenue
Total Service Revenue21,958 19,820 65,515 56,672
Hangar [Member] | Contracted Power [Member]
Service Revenue
Total Service Revenue0 0 0 0
Hangar [Member] | MIC Hawaii [Member]
Service Revenue
Total Service Revenue0 0 0 0
Hangar [Member] | Intersegment Revenue [Member]
Service Revenue
Total Service Revenue0 0 0 0
Construction [Member]
Service Revenue
Total Service Revenue8,271 13,526 38,478 38,546
Construction [Member] | International Matex Tank Terminals [Member]
Service Revenue
Total Service Revenue0 0 0 0
Construction [Member] | Atlantic Aviation [Member]
Service Revenue
Total Service Revenue0 0 0 0
Construction [Member] | Contracted Power [Member]
Service Revenue
Total Service Revenue0 0 0 0
Construction [Member] | MIC Hawaii [Member]
Service Revenue
Total Service Revenue8,271 13,526 38,478 38,546
Construction [Member] | Intersegment Revenue [Member]
Service Revenue
Total Service Revenue0 0 0 0
Other [Member]
Service Revenue
Total Service Revenue[1]42,412 48,602 145,116 141,111
Other [Member] | International Matex Tank Terminals [Member]
Service Revenue
Total Service Revenue[1]1,124 9,285 16,629 25,190
Other [Member] | Atlantic Aviation [Member]
Service Revenue
Total Service Revenue[1]40,437 39,017 125,659 114,991
Other [Member] | Contracted Power [Member]
Service Revenue
Total Service Revenue[1]0 0 0 0
Other [Member] | MIC Hawaii [Member]
Service Revenue
Total Service Revenue[1]851 300 2,828 930
Other [Member] | Intersegment Revenue [Member]
Service Revenue
Total Service Revenue[1]0 0 0 0
Lease [Member]
Service Revenue
Total Service Revenue96,514 104,887 299,964 319,484
Product Revenue
Total Product Revenue49,881 39,563 121,006 102,014
Lease [Member] | International Matex Tank Terminals [Member]
Service Revenue
Total Service Revenue97,720 106,096 303,633 323,147
Product Revenue
Total Product Revenue0 0 0 0
Lease [Member] | Atlantic Aviation [Member]
Service Revenue
Total Service Revenue0 0 0 0
Product Revenue
Total Product Revenue0 0 0 0
Lease [Member] | Contracted Power [Member]
Service Revenue
Total Service Revenue0 0 0 0
Product Revenue
Total Product Revenue48,570 38,822 117,596 99,849
Lease [Member] | MIC Hawaii [Member]
Service Revenue
Total Service Revenue0 0 0 0
Product Revenue
Total Product Revenue1,311 741 3,410 2,165
Lease [Member] | Intersegment Revenue [Member]
Service Revenue
Total Service Revenue(1,206)(1,209)(3,669)(3,663)
Product Revenue
Total Product Revenue0 0 0 0
Gas [Member]
Product Revenue
Total Product Revenue55,499 48,877 172,206 155,098
Gas [Member] | International Matex Tank Terminals [Member]
Product Revenue
Total Product Revenue0 0 0 0
Gas [Member] | Atlantic Aviation [Member]
Product Revenue
Total Product Revenue0 0 0 0
Gas [Member] | Contracted Power [Member]
Product Revenue
Total Product Revenue0 0 0 0
Gas [Member] | MIC Hawaii [Member]
Product Revenue
Total Product Revenue55,499 48,877 172,206 155,098
Gas [Member] | Intersegment Revenue [Member]
Product Revenue
Total Product Revenue0 0 0 0
Other [Member]
Product Revenue
Total Product Revenue6,869 6,401 20,067 19,327
Other [Member] | International Matex Tank Terminals [Member]
Product Revenue
Total Product Revenue0 0 0 0
Other [Member] | Atlantic Aviation [Member]
Product Revenue
Total Product Revenue0 0 0 0
Other [Member] | Contracted Power [Member]
Product Revenue
Total Product Revenue3,880 3,623 11,544 10,832
Other [Member] | MIC Hawaii [Member]
Product Revenue
Total Product Revenue2,989 2,778 8,523 8,495
Other [Member] | Intersegment Revenue [Member]
Product Revenue
Total Product Revenue $ 0 $ 0 $ 0 $ 0
[1]See Note 3, "Implementation of ASU 2014-09", for revenues disclosed in Other.

Reportable Segments (Schedule o

Reportable Segments (Schedule of EBITDA for Reportable Segments) (Details) - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Segment Reporting Information [Line Items]
Net income (loss) $ 21,376 $ 36,173 $ 104,450 $ 94,836 [1]
Provision (benefit) for income taxes7,884 25,547 36,558 65,284
Goodwill impairment3,215 0 3,215 0 [1]
Depreciation179,368 172,753 [1]
Amortization of intangibles20,030 17,329 55,470 50,920 [1]
Pension expense6,284 6,481 [1]
Other non-cash expense (income)14,359 [2](2,651)[1],[3]
Total Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net income (loss)41,337 55,757 163,587 153,017
Interest expense, net23,980 22,640 55,857 70,581
Provision (benefit) for income taxes16,033 36,728 61,070 102,433
Goodwill impairment3,215 3,215
Depreciation56,750 58,009 178,864 172,753
Amortization of intangibles20,030 17,329 55,470 50,920
Pension expense2,047 2,160 6,136 6,481
Other non-cash expense (income)3,259 (3,884)6,239 (1,495)
EBITDA excluding non-cash items166,651 188,739 530,438 554,690
IMTT [Member]
Segment Reporting Information [Line Items]
Net income (loss)16,432 20,755 61,909 67,184
Interest expense, net11,677 10,187 30,349 30,707
Provision (benefit) for income taxes6,422 14,422 24,195 46,686
Goodwill impairment0 0
Depreciation28,804 28,001 87,066 84,797
Amortization of intangibles3,879 3,510 11,636 9,029
Pension expense1,914 1,883 5,737 5,649
Other non-cash expense (income)207 178 611 315
EBITDA excluding non-cash items69,335 78,936 221,503 244,367
Atlantic Aviation [Member]
Segment Reporting Information [Line Items]
Net income (loss)24,735 21,591 78,566 60,225
Interest expense, net5,290 4,295 9,601 13,648
Provision (benefit) for income taxes9,058 11,139 28,769 36,766
Goodwill impairment0 0
Depreciation14,400 12,954 43,143 36,468
Amortization of intangibles11,182 12,332 34,877 37,426
Pension expense5 5 16 15
Other non-cash expense (income)323 1,212 1,232 1,252
EBITDA excluding non-cash items64,993 63,528 196,204 185,800
Contracted Power [Member]
Segment Reporting Information [Line Items]
Net income (loss)18,128 7,251 35,456 9,604
Interest expense, net4,944 6,281 10,661 20,431
Provision (benefit) for income taxes7,852 6,337 12,456 8,209
Goodwill impairment0 0
Depreciation7,848 13,724 35,680 41,711
Amortization of intangibles178 1,106 2,392 3,320
Pension expense0 0 0 0
Other non-cash expense (income)(1,574)(1,914)(5,152)(6,170)
EBITDA excluding non-cash items37,376 32,785 91,493 77,105
MIC Hawaii [Member]
Segment Reporting Information [Line Items]
Net income (loss)(17,958)6,160 (12,344)16,004
Interest expense, net2,069 1,877 5,246 5,795
Provision (benefit) for income taxes(7,299)4,830 (4,350)10,772
Goodwill impairment3,215 3,215
Depreciation5,698 3,330 12,975 9,777
Amortization of intangibles4,791 381 6,565 1,145
Pension expense128 272 383 817
Other non-cash expense (income)4,303 (3,360)9,548 3,108
EBITDA excluding non-cash items $ (5,053) $ 13,490 $ 21,238 $ 47,418
[1]Conformed to current period presentation. See Note 2, "Basis of Presentation", for Recently Issued Accounting Standards adopted during the nine months ended September 30, 2018.
[2]Other non-cash expense (income), net, includes the write-down of the Company’s investment in the design-build mechanical contractor business for the nine months ended September 30, 2018.
[3]Other non-cash expense (income), net, includes the write-down of the Company’s investment in the design-build mechanical contractor business for the nine months ended September 30, 2018.

Reportable Segments (Schedule_2

Reportable Segments (Schedule of Reconciliation of EBITDA for Reportable Segments) (Details) - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Segment Reporting Information [Line Items]
Interest income $ 113 $ 54 $ 304 $ 129
Interest expense[1](32,616)(29,291)(81,693)(90,129)
Goodwill impairment(3,215)0 (3,215)0 [2]
Depreciation(56,924)(58,009)(179,368)(172,753)
Amortization of intangibles(20,030)(17,329)(55,470)(50,920)[2]
Selling, general and administrative expenses - Corporate and Other(86,487)(84,898)(262,371)(244,817)
Fees to Manager-related party(12,333)(17,954)(36,113)(54,610)
Pension expense(6,284)(6,481)[2]
Other (expense) income, net(18,011)4,973 (11,721)7,893
Total consolidated net income before income taxes29,260 61,720 141,008 160,120
Total Reportable Segments [Member]
Segment Reporting Information [Line Items]
Total reportable segments EBITDA excluding non-cash items166,651 188,739 530,438 554,690
Interest income113 54 304 129
Interest expense(32,616)(29,291)(81,693)(90,129)
Goodwill impairment(3,215)(3,215)
Depreciation(56,924)(58,009)(179,368)(172,753)
Amortization of intangibles(20,030)(17,329)(55,470)(50,920)
Fees to Manager-related party(12,333)(17,954)(36,113)(54,610)
Pension expense(2,047)(2,160)(6,136)(6,481)
Other (expense) income, net(3,189)3,884 (6,243)1,495
Total consolidated net income before income taxes29,260 61,720 141,008 160,120
Total Reportable Segments [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Selling, general and administrative expenses - Corporate and Other $ (7,150) $ (6,214) $ (21,496) $ (21,301)
[1]Interest expense includes gains on derivative instruments of $4.8 million and $25.8 million for the quarter and nine months ended September 30, 2018, respectively. For the quarter and nine months ended September 30, 2017, interest expense includes losses on derivative instruments of $162,000 and $6.9 million, respectively.
[2]Conformed to current period presentation. See Note 2, "Basis of Presentation", for Recently Issued Accounting Standards adopted during the nine months ended September 30, 2018.

Reportable Segments (Schedule_3

Reportable Segments (Schedule of Capital Expenditures) (Details) - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Segment Reporting Information [Line Items]
Capital expenditures $ 49,207 $ 104,482 $ 159,037 $ 234,833 [1]
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Capital expenditures1,336 2,524 5,517 3,770
Operating Segments [Member]
Segment Reporting Information [Line Items]
Capital expenditures47,871 101,958 153,520 231,063
Operating Segments [Member] | IMTT [Member]
Segment Reporting Information [Line Items]
Capital expenditures17,454 20,232 41,786 52,291
Operating Segments [Member] | Atlantic Aviation [Member]
Segment Reporting Information [Line Items]
Capital expenditures15,187 23,661 51,634 57,757
Operating Segments [Member] | Contracted Power [Member]
Segment Reporting Information [Line Items]
Capital expenditures8,501 50,461 42,702 99,961
Operating Segments [Member] | MIC Hawaii [Member]
Segment Reporting Information [Line Items]
Capital expenditures $ 6,729 $ 7,604 $ 17,398 $ 21,054
[1]Conformed to current period presentation. See Note 2, "Basis of Presentation", for Recently Issued Accounting Standards adopted during the nine months ended September 30, 2018.

Reportable Segments (Schedule_4

Reportable Segments (Schedule of Assets of Reportable Segments) (Details) - USD ($) $ in ThousandsSep. 30, 2018Dec. 31, 2017
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements, net $ 3,753,291 [1] $ 4,659,614
Goodwill2,043,800 2,068,668
Total Assets7,938,470 8,008,951
Assets held for sale[2]971,934 0
Assets Held-for-sale [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements, net[3]0 0
Goodwill[3]0 0
Total Assets[3]0
Assets held for sale[3]971,934
Operating Segments [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements, net3,747,217 4,633,396
Goodwill2,043,800 2,068,668
Total Assets6,955,579 7,969,785
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements, net6,074 26,218
Goodwill0 0
Total Assets10,957 39,166
IMTT [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements, net2,254,203 2,305,440
Goodwill1,427,588 1,427,863
IMTT [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Assets4,027,790 4,109,448
Atlantic Aviation [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements, net568,741 559,597
Goodwill496,019 495,769
Atlantic Aviation [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Assets1,694,075 1,710,535
Contracted Power [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements, net625,412 1,466,139
Goodwill0 21,628
Contracted Power [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Assets704,429 1,617,658
MIC Hawaii [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements, net298,861 302,220
Goodwill120,193 123,408
MIC Hawaii [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Assets $ 529,285 $ 532,144
[1]Property, equipment, land and leasehold improvements excludes assets related to BEC, which were classified as held for sale at September 30, 2018. See Note 2, "Basis of Presentation", for further discussion.
[2]See Note 2, "Basis of Presentation", for further discussion on assets and liabilities held for sale.
[3]At September 30, 2018, Property, Equipment, Land and Leasehold Improvements, net, and Goodwill excludes balances related to BEC, which were classified as held for sale. See Note 2, "Basis of Presentation", for further discussion.

Long-Term Contracted Revenue (D

Long-Term Contracted Revenue (Details) $ in ThousandsSep. 30, 2018USD ($)
Lease Revenue [Member]
Rental Revenue 2018 remaining $ 87,187
Rental Revenue 2019236,685
Rental Revenue 2020126,915
Rental Revenue 202165,912
Rental Revenue 202244,422
Rental Revenue 202329,196
Thereafter51,356
Total641,673
Contract revenue [Member]
Contract Revenue 2018 remaining21,102
Contract Revenue 201949,066
Contract Revenue 202033,459
Contract Revenue 202127,176
Contract Revenue 202223,016
Contract Revenue 202315,718
Thereafter16,058
Total185,595
Total Long-Term Revenue [Member]
Total Long-Term Revenue 2018 remaining108,289
Total Long-Term Revenue 2019285,751
Total Long-Term Revenue 2020160,374
Total Long-Term Revenue 202193,088
Total Long-Term Revenue 202267,438
Total Long-Term Revenue 202344,914
Thereafter67,414
Total $ 827,268

Related Party Transactions (Nar

Related Party Transactions (Narrative) (Details)1 Months Ended3 Months Ended5 Months Ended9 Months Ended
Oct. 31, 2018sharesMay 31, 2018USD ($)Jan. 31, 2018USD ($)Mar. 31, 2017bblSep. 30, 2018USD ($)$ / sharessharesJun. 30, 2018USD ($)Mar. 31, 2018USD ($)Dec. 31, 2017USD ($)$ / sharessharesSep. 30, 2017USD ($)Jun. 30, 2017USD ($)Mar. 31, 2017USD ($)Sep. 30, 2018$ / sharessharesSep. 30, 2018USD ($)$ / sharessharesSep. 30, 2017USD ($)Oct. 30, 2018$ / sharesJun. 30, 2015USD ($)$ / shares
Related Party Transaction [Line Items]
Common stock, par value per share | $ / shares $ 0.001 $ 0.001 $ 0.001 $ 0.001 $ 0.001
Number Of Shares Bought By Manager Related Party | shares5,987,100
Percentage Of Shares Held By Manager Related Party14.29%14.29%14.29%
Macquarie Infrastructure and Real Assets, Inc [Member]
Related Party Transaction [Line Items]
Proceeds From Sale Of Equity Interest To Related Party $ 27,100,000
Subsequent Event [Member]
Related Party Transaction [Line Items]
Number Of Shares Issued Subsequent For Base Management Fees To Manager Subsequent to Balance sheet date | shares89,542
MIC Corporate [Member]
Related Party Transaction [Line Items]
Percentage of future earnings20.00%
Minimum Threshold For Sale To Third Party50.00%
MIC Corporate [Member] | Revolving Credit Facility [Member]
Related Party Transaction [Line Items]
Borrowing capacity $ 600,000,000 $ 410,000,000
Debt Instrument, Maturity DateJan. 3,
2022
At the Market [Member]
Related Party Transaction [Line Items]
Common stock, par value per share | $ / shares $ 0.001
At the Market [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Aggregate gross offering price $ 400,000,000
Macquarie Infrastructure Management (USA) Inc. [Member]
Related Party Transaction [Line Items]
Shares of the Company held by Manager, a related party | shares12,227,736 5,435,442 12,227,736 12,227,736
Base management fees to be settled/settled in shares $ 12,333,000 $ 10,852,000 $ 12,928,000 $ 16,778,000 $ 17,954,000 $ 18,433,000 $ 18,223,000 $ 36,100,000 $ 54,600,000
Reimbursement of out-of-pocket expenses $ 296,000 284,000 705,000 729,000
Number Of Shares Issued To Manager For Base Management Fees | shares269,286
MIHI LLC [Member]
Related Party Transaction [Line Items]
Borrowing capacity $ 50,000,000
MIHI LLC [Member] | MIC Corporate [Member] | Revolving Credit Facility [Member]
Related Party Transaction [Line Items]
Interest costs incurred $ 4,000 $ 47,000 $ 116,000
Macquarie Capital Funding LLC [Member]
Related Party Transaction [Line Items]
Borrowing capacity40,000,000
Payment for Debt Extinguishment or Debt Prepayment Cost $ 80,000
Macquarie Capital Funding LLC [Member] | Revolving Credit Facility [Member]
Related Party Transaction [Line Items]
Interest costs incurred $ 139,000 376,000
Macquarie Energy North America Trading Inc [Member]
Related Party Transaction [Line Items]
Capacity Leased To Related Party | bbl200,000
Revenue from related party $ 907,000

Related Party Transactions (Sch

Related Party Transactions (Schedule of Dividends Paid to Manager) (Details) $ / shares in Units, $ in Thousands9 Months Ended
Sep. 30, 2018USD ($)$ / shares
Dividend One [Member]
Dividends Payable [Line Items]
DeclaredFeb. 17,
2017
Period CoveredFourth quarter 2016
$ per Share | $ / shares $ 1.31
Record DateMar. 3,
2017
Payable DateMar. 8,
2017
Cash Paid to Manager | $ $ 6,080
Dividend Two [Member]
Dividends Payable [Line Items]
DeclaredMay 2,
2017
Period CoveredFirst quarter 2017
$ per Share | $ / shares $ 1.32
Record DateMay 15,
2017
Payable DateMay 18,
2017
Cash Paid to Manager | $ $ 6,332
Dividend Three [Member]
Dividends Payable [Line Items]
DeclaredAug. 1,
2017
Period CoveredSecond quarter 2017
$ per Share | $ / shares $ 1.38
Record DateAug. 14,
2017
Payable DateAug. 17,
2017
Cash Paid to Manager | $ $ 6,941
Dividend Four [Member]
Dividends Payable [Line Items]
DeclaredOct. 30,
2017
Period CoveredThird quarter 2017
$ per Share | $ / shares $ 1.42
Record DateNov. 13,
2017
Payable DateNov. 16,
2017
Cash Paid to Manager | $ $ 7,484
Dividend Five [Member]
Dividends Payable [Line Items]
DeclaredFeb. 19,
2018
Period CoveredFourth quarter 2017
$ per Share | $ / shares $ 1.44
Record DateMar. 5,
2018
Payable DateMar. 8,
2018
Cash Paid to Manager | $ $ 8,067
Dividend Six [Member]
Dividends Payable [Line Items]
DeclaredMay 1,
2018
Period CoveredFirst quarter 2018
$ per Share | $ / shares $ 1
Record DateMay 14,
2018
Payable DateMay 17,
2018
Cash Paid to Manager | $ $ 6,213
Dividend Seven [Member]
Dividends Payable [Line Items]
DeclaredJul. 31,
2018
Period CoveredSecond quarter 2018
$ per Share | $ / shares $ 1
Record DateAug. 13,
2018
Payable DateAug. 16,
2018
Cash Paid to Manager | $ $ 10,711
Dividend Eight [Member]
Dividends Payable [Line Items]
DeclaredOct. 30,
2018
Period CoveredThird quarter 2018
$ per Share | $ / shares $ 1
Record DateNov. 12,
2018
Payable DateNov. 15,
2018
Cash Paid to Manager | $ [1]
[1]The amount of dividend payable to the Manager for the third quarter of 2018 will be determined on November 12, 2018, the record date.

Related Party Transactions (S_2

Related Party Transactions (Schedule of Base Management Fees and Performance Fees) (Details) - Macquarie Infrastructure Management (USA) Inc. [Member] - USD ($) $ in Thousands3 Months Ended9 Months Ended
Sep. 30, 2018Jun. 30, 2018Mar. 31, 2018Dec. 31, 2017Sep. 30, 2017Jun. 30, 2017Mar. 31, 2017Sep. 30, 2018Sep. 30, 2017
Common Stock Equity [Line Items]
Base management fees to be settled/settled in shares $ 12,333 $ 10,852 $ 12,928 $ 16,778 $ 17,954 $ 18,433 $ 18,223 $ 36,100 $ 54,600
Performance fees to be settled/settled in shares and cash $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0
Shares Issued269,286 [1]277,053 265,002 248,162 240,674 233,394 232,398
[1]The Manager elected to reinvest all of the monthly base management fees for the third quarter of 2018 in shares. The Company issued 269,286 shares for the quarter ended September 30, 2018, including 89,542 shares that were issued in October 2018 for the September 2018 monthly base management fee.

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details)9 Months Ended12 Months Ended
Sep. 30, 2018Dec. 22, 2017
Components of Income Taxes [Line Items]
Bonus depreciation percentage on qualifying assets100% bonus depreciation on qualifying assets (which is scheduled to phase down ratably to 0% between 2023 and 2027)
Deduction, interest expenses, percentage30.00%
Federal income tax rate35.00%
Scenario, Plan [Member]
Components of Income Taxes [Line Items]
Federal income tax rate21.00%
Earliest Tax [Member]
Components of Income Taxes [Line Items]
Net operating loss carry-forwards, expiration dateDec. 31,
2029
Latest Tax [Member]
Components of Income Taxes [Line Items]
Net operating loss carry-forwards, expiration dateDec. 31,
2035

Subsequent Events (Narrative) (

Subsequent Events (Narrative) (Details) - USD ($) $ / shares in Units, $ in ThousandsNov. 01, 2018Oct. 30, 2018Sep. 30, 2018Sep. 30, 2017Sep. 30, 2018Sep. 30, 2017
Subsequent Event [Line Items]
Fees To Manager Related Party $ 12,333 $ 17,954 $ 36,113 $ 54,610
Subsequent Event [Member]
Subsequent Event [Line Items]
Cash dividend declared, date declaredOct. 30,
2018
Cash dividend declared per share $ 1
Cash dividend declared, date to be paidNov. 15,
2018
Cash dividend declared, date of recordNov. 12,
2018
Percentage of Cap on Equity Market Capitalization on Base Management Fee1.00%
Subsequent Event [Member] | Annual Reduction of Management Fees [Member]
Subsequent Event [Line Items]
Fees To Manager Related Party $ 10,000