Macquarie Infrastructure 10-Q 28 Oct 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 25, 2013
Document Documentand Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	30-Sep-13
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Trading Symbol	MIC
Entity Registrant Name	Macquarie Infrastructure CO LLC
Entity Central Index Key	1289790
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		53,469,879

CONSOLIDATED_CONDENSED_BALANCE

CONSOLIDATED CONDENSED BALANCE SHEETS (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$83,043	$141,376
Restricted cash	13,920	3,133
Accounts receivable, less allowance for doubtful accounts of $806 and $875, respectively	65,115	56,553
Inventories	25,330	20,617
Prepaid expenses	9,473	8,908
Deferred income taxes	6,456	6,803
Equipment lease receivables - current	13,149	4,448
Other	9,766	12,072
Total current assets	226,252	253,910
Property, equipment, land and leasehold improvements, net	777,067	708,031
Equipment lease receivables - non-current	17,285	28,177
Investment in unconsolidated business	86,554	75,205
Goodwill	513,939	514,640
Intangible assets, net	600,345	626,902
Deferred financing costs, net of accumulated amortization	22,030	7,845
Other	5,702	8,984
Total assets	2,249,174	2,223,694
Current liabilities:
Due to manager - related party	15,379	50,253
Accounts payable	28,957	26,499
Accrued expenses	40,978	35,499
Current portion of long-term debt	168,005	106,580
Fair value of derivative instruments	13,336	7,450
Other	18,187	19,049
Total current liabilities	284,842	245,330
Long-term debt, net of current portion	754,685	1,052,584
Deferred income taxes	176,092	169,392
Fair value of derivative instruments		5,360
Other	53,733	53,463
Total liabilities	1,269,352	1,526,129
Commitments and contingencies
Members' equity:
LLC interests, no par value; 500,000,000 authorized; 53,469,879 LLC interests issued and outstanding at September 30, 2013 and 47,453,943 LLC interests issued and outstanding at December 31, 2012	1,129,950	883,143
Additional paid in capital	21,447	21,447
Accumulated other comprehensive loss	-20,419	-20,801
Accumulated deficit	-213,331	-228,761
Total members' equity	917,647	655,028
Noncontrolling interests	62,175	42,537
Total equity	979,822	697,565
Total liabilities and equity	$2,249,174	$2,223,694

CONSOLIDATED_CONDENSED_BALANCE1

CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
CONSOLIDATED CONDENSED BALANCE SHEETS [Abstract]
Accounts receivable, allowance for doubtful accounts	$806	$875
LLC interests, no par value	$0	$0
LLC interests, authorized	500,000,000	500,000,000
LLC interests, issued	53,469,879	47,453,943
LLC interests, outstanding	53,469,879	47,453,943

CONSOLIDATED_CONDENSED_STATEME

CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended				9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Revenue
Revenue from product sales	$172,169		$166,385		$513,465		$508,468
Revenue from product sales - utility	32,981		35,535		104,095		110,656
Service revenue	57,752		56,214		160,153		160,053
Financing and equipment lease income	817		1,119		2,779		3,448
Total revenue	263,719		259,253		780,492		782,625
Costs and expenses
Cost of product sales	113,974		111,677		340,122		346,778
Cost of product sales - utility	28,142		31,001		89,095		94,497
Cost of services	13,584		15,044		37,030		41,489
Selling, general and administrative	53,669		51,571		154,998		157,301
Fees to manager - related party	15,242		29,353		76,912		39,108
Depreciation	10,039		7,596		28,730		22,704
Amortization of intangibles	8,618		8,800		25,866		25,892
Loss from customer contract termination					1,626
Loss (gain) on disposal of assets	50		-1,706		226		-1,379
Total operating expenses	243,318		253,336		754,605		726,390
Operating income	20,401		5,917		25,887		56,235
Other income (expense)
Interest income	39		110		182		116
Interest expense	-15,767	[1]	-15,144	[1]	-31,190	[1]	-39,076	[1]
Loss on extinguishment of debt					-2,472
Equity in earnings and amortization charges of investee	8,576		6,989		30,327		23,295
Other income, net	829		249		514		245
Net income (loss) before income taxes	14,078		-1,879		23,248		40,815
(Provision) benefit for income taxes	-5,829	[2]	1,758	[2]	-9,241	[2]	-14,698	[2]
Net income (loss)	8,249		-121		14,007		26,117
Less: net (loss) income attributable to noncontrolling interests	-2,158		1,758		-1,423		2,766
Net income (loss) attributable to MIC LLC	$10,407		($1,879)		$15,430		$23,351
Basic income (loss) per share attributable to MIC LLC interest holders	$0.20		($0.04)		$0.31		$0.50
Weighted average number of shares outstanding: basic	53,043,185		46,684,627		50,525,617		46,524,980
Diluted income (loss) per share attributable to MIC LLC interest holders	$0.20		($0.04)		$0.31		$0.50
Weighted average number of shares outstanding: diluted	53,056,095		46,684,627		50,541,513		46,545,903
Cash dividends declared per share	$0.88		$0.69		$2.44		$1.51
[1]	Interest expense includes losses on derivative instruments of $8.0 million and $9.6 million for the quarter and nine months ended September 30, 2013, respectively, of which net losses of $344,000 and $1.2 million, respectively, was reclassified from accumulated other comprehensive income. For the quarter and nine months ended September 30, 2012, interest expense includes losses on derivative instruments of $9.4 million and $20.3 million, respectively, of which net losses of $6.1 million and $14.6 million, respectively, was reclassified from accumulated other comprehensive income.
[2]	Includes $137,000 and $463,000 of benefit for income taxes from accumulated other comprehensive income reclassifications for the quarter and nine months ended September 30, 2013, respectively. The quarter and nine months ended September 30, 2012, includes benefit for income taxes of $3.1 million and $6.5 million from accumulated other comprehensive income reclassifications, respectively.

CONSOLIDATED_CONDENSED_STATEME1

CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS [Abstract]
Interest expense, losses on derivative instruments	($8,000)	($9,400)	($9,600)	($20,300)
Net loss in accumulated other comprehensive income reclassifications for cash flow hedges	-344	-6,100	-1,200	-14,600
Reclassification of realized losses of derivatives into earnings, taxes	$137	$3,100	$463	$6,500

CONSOLIDATED_CONDENSED_STATEME2

CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME [Abstract]
Net income (loss)	$8,249		($121)		$14,007		$26,117
Other comprehensive income, net of taxes:
Reclassification of realized losses of derivatives	217	[1]	3,070	[1]	733	[1]	8,252	[1]
Translation adjustment		[2]		[2]		[2]	104	[2]
Other comprehensive income	217		3,070		733		8,356
Comprehensive income	8,466		2,949		14,740		34,473
Less: comprehensive (loss) income attributable to noncontrolling interests	-2,054		1,933		-1,072		3,364
Comprehensive income attributable to MIC LLC	$10,520		$1,016		$15,812		$31,109
[1]	Reclassification of realized losses of derivatives is composed of (i) pre-tax derivative losses into interest expense of $344,000 and $1.2 million, respectively, and the related tax benefit of $137,000 and $463,000, respectively, in the consolidated condensed statements of operations; and (ii) pre-tax derivative losses as an adjustment to investment in unconsolidated business of $15,000 and $47,000, respectively, and an adjustment to deferred taxes of $5,000 and $16,000, respectively, in the consolidated condensed balance sheet for the quarter and nine months ended September 30, 2013, respectively. For the quarter and nine months ended September 30, 2012, reclassification of realized losses of derivatives is composed of (i) pre-tax derivative losses into interest expense of $6.1 million and $14.6 million, respectively, and the related tax benefit of $3.1 million and $6.5 million, respectively, in the consolidated condensed statements of operations; and (ii) pre-tax derivative losses as an adjustment to investment in unconsolidated business of $87,000 and $261,000, respectively, and an adjustment to deferred taxes of $30,000 and $91,000, respectively, in the consolidated condensed balance sheet.
[2]	Translation adjustment is presented net of taxes of $56,000 for the nine months ended September 30, 2012.

CONSOLIDATED_CONDENSED_STATEME3

CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME [Abstract]
Net loss in accumulated other comprehensive income reclassifications for cash flow hedges	($344)	($6,100)	($1,200)	($14,600)
Reclassification of realized losses of derivatives into earnings, taxes	137	3,100	463	6,500
Loss in accumulated other comprehensive income reclassifications for cash flow hedges from unconsolidated business	-15	-87	-47	-261
Reclassification of realized losses of derivatives into earnings from unconsolidated business, taxes	5	30	16	91
Translation adjustment, taxes				$56

CONSOLIDATED_CONDENSED_STATEME4

CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Operating activities
Net income	$14,007	$26,117
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	33,751	27,740
Amortization of intangible assets	25,866	25,892
Loss (gain) on disposal of assets	106	-1,803
Loss from customer contract termination	1,626
Equity in earnings and amortization charges of investee	-30,327	-23,295
Equity distributions from investee	19,025	77,920
Amortization of debt financing costs	2,892	3,290
Loss on extinguishment of debt	2,434
Adjustments to derivative instruments	1,160	-23,680
Base management fees to be settled/settled in LLC interests	23,524	15,599
Performance fees to be settled/settled in LLC interests	53,388	23,509
Equipment lease receivable, net	2,814	2,595
Deferred rent	197	314
Deferred taxes	6,567	10,459
Other non-cash (income) expenses, net	-743	2,340
Changes in other assets and liabilities:
Restricted cash	-465
Accounts receivable	-8,524	-8,882
Inventories	-3,535	2,232
Prepaid expenses and other current assets	1,026	395
Due to manager - related party	2	68
Accounts payable and accrued expenses	-13,794	4,622
Income taxes payable	-819	727
Other, net	-2,418	-1,576
Net cash provided by operating activities	127,760	164,583
Investing activities
Acquisitions of businesses and investments, net of cash acquired	-14,666
Purchases of property and equipment	-51,435	-25,443
Proceeds from sale of assets		5,625
Return of investment in unconsolidated business		50,899
Other, net	64	72
Net cash (used in) provided by investing activities	-66,037	31,153
Financing activities
Proceeds from issuance of LLC interests	227,558
Proceeds from long-term debt	499,960	191,142
Offering and equity raise costs paid	-11,041
Dividends paid to holders of LLC interests	-82,139	-47,716
Contributions received from noncontrolling interests	22,362
Distributions paid to noncontrolling interests	-1,652	-4,286
Payment of long-term debt	-758,795	-203,428
Debt financing costs paid	-18,973	-2,815
Change in restricted cash	4,036
Payment of notes and capital lease obligations	-1,372	-622
Net cash used in financing activities	-120,056	-67,725
Net change in cash and cash equivalents	-58,333	128,011
Cash and cash equivalents, beginning of period	141,376	22,786
Cash and cash equivalents, end of period	83,043	150,797
Non-cash investing and financing activities:
Accrued purchases of property and equipment	12,331	1,742
Acquisition of equipment through capital leases	1,320	2,624
Issuance of LLC interests to manager for base management fees	21,487	13,977
Issuance of LLC interests to manager for performance fees	90,302
Issuance of LLC interests to independent directors	640	571
Taxes paid	3,493	3,734
Interest paid	$28,090	$50,863

Organization_and_Description_o

Organization and Description of Business	9 Months Ended
	Sep. 30, 2013
Organization and Description of Business [Abstract]
Organization and Description of Business	1. Organization and Description of Business
	Macquarie Infrastructure Company LLC, a Delaware limited liability company, was formed on April 13, 2004. Macquarie Infrastructure Company LLC, both on an individual entity basis and together with its consolidated subsidiaries, is referred to in these financial statements as the "Company" or "MIC". The Company owns, operates and invests in a diversified group of infrastructure businesses in the United States. Macquarie Infrastructure Management (USA) Inc. is the Company's manager and is referred to in these financial statements as the Manager. The Manager is a wholly-owned subsidiary within the Macquarie Group of companies, which is comprised of Macquarie Group Limited and its subsidiaries and affiliates worldwide. Macquarie Group Limited is headquartered in Australia and is listed on the Australian Stock Exchange.
	MIC LLC is a non-operating holding company with a Board of Directors and other corporate governance responsibilities generally consistent with those of a Delaware corporation. MIC LLC has made an election to be treated as a corporation for tax purposes.
	The Company owns its businesses through its wholly-owned subsidiary, Macquarie Infrastructure Company Inc., or MIC Inc. The Company's businesses operate predominantly in the United States and consist of the following:
		•	International Matex Tank Terminals or "IMTT": a 50% interest in a bulk liquid storage terminal business, which provides bulk liquid storage and handling services at ten marine terminals in the United States and two in Canada and is one of the largest participants in this industry in the U.S., based on storage capacity;
		•	Hawaii Gas: a full-service gas energy company processing and distributing gas products and providing related services in Hawaii;
		•	District Energy: a 50.01% controlling interest in a district energy business, which operates one of the largest district cooling systems in the U.S., serving various customers in Chicago, Illinois and Las Vegas, Nevada;
		•	Atlantic Aviation: an airport services business providing products and services, including fuel and aircraft hangaring/parking, to owners and operators of general aviation aircraft at 62 airports in the U.S.; and
		•	MIC Solar: interests in five contracted solar power generation facilities located in the southwest U.S. that are expected to have an aggregate generating capacity of 57 megawatts of wholesale electricity to utilities and a U.S. Air Force base.

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Basis of Presentation [Abstract]
Basis of Presentation	2. Basis of Presentation
	The unaudited consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X for interim financial information. Accordingly, they do not include all of the information and notes required by accounting principles generally accepted in the United States 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 preparation of consolidated condensed financial statements in conformity with GAAP requires estimates and assumptions. Management evaluates these estimates and assumptions on an ongoing basis. Actual results may differ from the estimates and assumptions used in the financial statements and notes. Operating results for the quarter and nine months ended September 30, 2013 are not necessarily indicative of the results that may be expected for the year ending December 31, 2013.
	The consolidated balance sheet at December 31, 2012 has been derived from audited financial statements but does not include all of the information and notes required by accounting principles generally accepted in the United States 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, 2012 included in the Company's Annual Report on Form 10-K, as filed with the SEC on February 20, 2013.
	Recently Issued Accounting Standards Adopted
	In February of 2013, the Financial Accounting Standards Board, or FASB, issued ASU 2013-02 Reporting Amounts Reclassified Out of Accumulated Other Comprehensive Income, which is effective for interim reporting periods beginning on or after December 15, 2012. This guidance requires disclosure by component of other comprehensive income of the amounts reclassified out of accumulated other comprehensive income by component and into net earnings for the reporting period. Since this guidance requires only additional disclosures, the adoption did not have an impact on the Company's results of operations and financial condition.

Income_per_Share

Income per Share	9 Months Ended
	Sep. 30, 2013
Income per Share [Abstract]
Income per Share	3. Income per Share
	Following is a reconciliation of the basic and diluted number of shares used in computing income per share:
		Quarter Ended				Nine Months Ended September 30,
		September 30,
		2013		2012		2013		2012
	Weighted average number of shares outstanding: basic		53,043,185		46,684,627		50,525,617		46,524,980
	Dilutive effect of restricted stock unit grants		12,910		-		15,896		20,923
	Weighted average number of shares outstanding: diluted		53,056,095		46,684,627		50,541,513		46,545,903
	The effect of potentially dilutive shares for the quarter and nine months ended September 30, 2013 is calculated assuming that the 12,910 restricted stock unit grants provided to the independent directors on May 20, 2013, which will vest during the second quarter of 2014, had been fully converted to shares on those grant dates. The effect of potentially dilutive shares for the nine months ended September 30, 2013 is calculated also assuming that the 18,208 restricted stock unit grants provided to the independent directors on May 31, 2012, which vested during the second quarter of 2013, and the 895 restricted stock unit grants on February 21, 2013, which vested during the second quarter of 2013, had been fully converted to shares on those grant dates.
	The effect of potentially dilutive shares for the nine months ended September 30, 2012 is calculated assuming that the 18,208 restricted stock unit grants provided to the independent directors on May 31, 2012, which vested during the second quarter of 2013, the 17,925 restricted stock unit grants on June 2, 2011, which vested during the second quarter of 2012, and the 5,209 restricted stock unit grants on August 12, 2011, which vested during the second quarter of 2012, had been fully converted to shares on those grant dates. The 18,208 restricted stock unit grants provided to the independent directors on May 31, 2012 were anti-dilutive for the quarter ended September 30, 2012, due to the Company's net loss for that period.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2013
Acquisitions [Abstract]
Acquisitions	4. Acquisitions
	MIC Solar Acquisitions
	The Company invested in two utility-scale solar photovoltaic contracted power generation facilities in the fourth quarter of 2012, one in Tucson, Arizona (the "Tucson Project") and one in Presidio, Texas (the "Presidio Project"). These projects are fully operational and have a combined capacity 30 megawatts ("MWac") of electricity.
	During the third quarter of 2013, the Company invested in two additional utility-scale solar photovoltaic contracted power generation facilities, one at Davis Monthan Air Force Base (the "DMAFB Project") located in Tucson, Arizona, and one in Valley Center, California (the "Valley Center Project"). On October 8, 2013, the Company completed the acquisition of a contracted solar power generation facility located near Ramona, California ("the Ramona Project"). These three projects are under construction and are expected to be operational before the end of the first quarter of 2014. They have a combined generating capacity of 27 megawatts.
	At September 30, 2013, the four investments made to that date, called "MIC Solar", constituted a business segment that meets the threshold of a reportable segment in accordance with U.S. GAAP. Therefore, the results of operations of MIC Solar are reported as a reportable segment for the quarter and nine months ended September 30, 2013 in the accompanying disclosure of segment information.
	The projects that comprise MIC Solar are, or will upon substantial completion, be held in LLCs with a co-investor. Each project's taxable income for the first five years is expected to be a loss due to accelerated depreciation, with 99% of the taxable loss, subject to certain adjustments that are not expected to be significant, allocated to the co-investor. Accordingly, these projects should have a nominal effect on MIC's consolidated current taxable income for at least the first five years of each project. The projects do not pay federal or state income taxes on a standalone basis, as the projects are treated as a partnership for tax purposes, with each member paying federal and state income taxes based on their allocated taxable income.
	MIC will receive certain rights to make decisions over the management and operations of the projects and the Company has determined that it is appropriate to consolidate the project with the co-investor's interest reflected as a "noncontrolling interest" in the consolidated condensed financial statements.
	Acquisition of - Tucson, Arizona
	On November 21, 2012, the Company completed the acquisition of the Tucson Project for a purchase price of $59.4 million. This acquisition was funded by a $4.0 million capital investment by the Company and $55.4 million capital contribution from a noncontrolling interest co-investor. At December 31, 2012, this facility was fully operational. During June of 2013, the co-investor made a further investment of $1.7 million into the Tucson Project. This facility is expected to generate approximately 20 megawatts of electricity.
	The acquisition has been accounted for as a business combination. Accordingly, the results of operations of the Tucson Project are included in the consolidated condensed statement of operations since November 21, 2012. The fair value of the assets acquired and liabilities assumed at the date of acquisition was as follows ($ in thousands):
	Restricted cash - current	$	538
	Total current assets		538
	Property and equipment		115,597
	Restricted cash - non-current		2,219
	Total assets acquired	$	118,354
	Current portion of long-term debt	$	1,842
	Total current liabilities		1,842
	Long-term debt		57,087
	Total liabilities assumed	$	58,929
	Net assets acquired	$	59,425
	Acquisition of - Presidio, Texas
	On December 21, 2012, the Company completed the acquisition of the Presidio Project for a purchase price of $5.4 million, funded by a capital investment by the Company. In January of 2013, the Company entered into an LLC agreement with a noncontrolling interest co-investor who made a capital contribution of $2.0 million during the quarter ended March 31, 2013. During April of 2013, the co-investor made a further investment of $18.6 million, of which $3.4 million was returned to MIC as a return of capital, reducing MIC's investment in the Presidio Project to $2.0 million. This facility is expected to generate approximately 10 megawatts of electricity.
	In connection with the acquisition, the Company assumed $24.3 million in construction financing. This facility in Presidio commenced operations during June of 2013. Prior to operations, the fixed assets of this investment were classified as construction in progress on the consolidated condensed balance sheet. The construction loan was converted to term debt during July of 2013.
	The acquisition has been accounted for as a business combination. Accordingly, the results of operations of the Presidio Project are included in the consolidated condensed statement of operations since December 21, 2012. The fair value of the assets acquired and liabilities assumed at the date of acquisition was as follows ($ in thousands):
	Restricted cash - current	$	2,596
	Total current assets		2,596
	Property and equipment		25,837
	Restricted cash - non-current		1,000
	Deferred financing costs		263
	Total assets acquired	$	29,696
	Current portion of long-term debt	$	497
	Total current liabilities		497
	Long-term debt		23,807
	Total liabilities assumed	$	24,304
	Net assets acquired	$	5,392
	Acquisition of - Davis Monthan Air Force Base, Arizona
	On July 19, 2013, the Company completed the acquisition of the DMAFB Project near Tucson, Arizona for a purchase price of $7.9 million. This was funded by a capital investment by the Company. This facility is expected to generate approximately 13 megawatts of electricity. In connection with the acquisition, the Company assumed $22.4 million in construction financing. The DMAFB Project is expected to commence operations during the first quarter of 2014 and therefore the fixed assets of this investment are classified as construction in progress at September 30, 2013 on the consolidated condensed balance sheet. Upon commencement of operations, the construction loan is expected to convert to term debt.
	The acquisition has been accounted for as a business combination. Accordingly, the results of operations of the DMAFB Project are included in the consolidated condensed statement of operations starting with the quarter ended September 30, 2013. The fair value of the assets acquired and liabilities assumed at the date of acquisition was as follows ($ in thousands):
	Restricted cash - current	$	2,708
	Total current assets		2,708
	Property and equipment		27,593
	Total assets acquired	$	30,301
	Current liabilities	$	32
	Current portion of long-term debt		321
	Total current liabilities		353
	Long-term debt		22,040
	Total liabilities assumed	$	22,393
	Net assets acquired	$	7,908
	Acquisition of - Valley Center, California
	On September 20, 2013, the Company completed the acquisition of the Valley Center Project in Valley Center, California for a purchase price of $6.8 million. This was funded by a capital investment by the Company. This facility is expected to generate approximately 7 megawatts of electricity. The Valley Center Project is expected to commence operations during the first quarter of 2014 and therefore the fixed assets of this investment are classified as construction in progress at September 30, 2013 on the consolidated condensed balance sheet.
	In connection with the acquisition, the Company entered into a construction loan agreement and drew down $10.2 million. Upon commencement of operations, the construction loan is expected to convert to term debt.
	The acquisition has been accounted for as a business combination. Accordingly, the results of operations of the Valley Center Project are included in the consolidated condensed statement of operations starting with the quarter ended September 30, 2013. The fair value of the assets acquired and liabilities assumed at the date of acquisition was as follows ($ in thousands):
	Restricted cash - current	$	7,614
	Other current assets		7
	Total current assets		7,621
	Property and equipment		8,846
	Deferred financing costs		502
	Total assets acquired	$	16,969
	Current liabilities	$	10,211
	Total liabilities assumed	$	10,211
	Net assets acquired	$	6,758
	Had the Tucson Project and the Presidio Project acquisitions occurred as of January 1, 2012, and the DMAFB Project and Valley Center Project acquisitions occurred as of January 1, 2013, the Company's consolidated results of operations would not have been materially different. For the nine months ended September 30, 2013 and for the year ended December 31, 2012, the Company recorded transaction related costs of $2.1 million and $1.1 million, respectively, in selling, general, and administrative expense for these investments.

Property_Equipment_Land_and_Le

Property, Equipment, Land and Leasehold Improvements	9 Months Ended
	Sep. 30, 2013
Property, Equipment, Land and Leasehold Improvements [Abstract]
Property, Equipment, Land and Leasehold Improvements	5. Property, Equipment, Land and Leasehold Improvements
	Property, equipment, land and leasehold improvements at September 30, 2013 and December 31, 2012 consist of the following ($ in thousands):
		30-Sep-13			31-Dec-12
	Land	$	4,618		$	4,618
	Easements		5,624			5,624
	Buildings		25,133			24,993
	Leasehold and land improvements		340,929			337,632
	Machinery and equipment		562,617			503,499
	Furniture and fixtures		10,760			10,215
	Construction in progress		77,316			41,370
	Property held for future use		1,975			1,768
			1,028,972			929,719
	Less: accumulated depreciation		(251,905	)		(221,688	)
	Property, equipment, land and leasehold improvements, net	$	777,067		$	708,031
	As discussed in Note 4, "Acquisitions", the Company acquired $36.4 million and $141.4 million, respectively, in machinery and equipment and construction in progress from the MIC Solar acquisitions during the third quarter of 2013 and fourth quarter of 2012, respectively.

Intangible_Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2013
Intangible Assets [Abstract]
Intangible Assets	6. Intangible Assets
	Intangible assets at September 30, 2013 and December 31, 2012 consist of the following ($ in thousands):
		30-Sep-13			31-Dec-12
	Contractual arrangements	$	745,841		$	745,841
	Non-compete agreements		9,575			9,575
	Customer relationships		79,445			79,445
	Leasehold rights		2,121			3,330
	Trade names		15,671			15,671
	Technology		460			460
			853,113			854,322
	Less: accumulated amortization		(252,768	)		(227,420	)
	Intangible assets, net	$	600,345		$	626,902
	The goodwill balance as of September 30, 2013 is comprised of the following ($ in thousands):
	Goodwill acquired in business combinations, net of disposals	$	637,139
	Less: accumulated impairment charges		(123,200	)
	Balance at September 30, 2013	$	513,939
	The Company tests for goodwill impairment at the reporting unit level on an annual basis on October 1st of each year and between annual tests if a triggering event indicates impairment. There were no triggering events indicating impairment for the nine months ended September 30, 2013.

LongTerm_Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2013
Long-Term Debt [Abstract]
Long-Term Debt	7. Long-Term Debt
	At September 30, 2013 and December 31, 2012, the Company's consolidated long-term debt comprised the following ($ in thousands):
		30-Sep-13			31-Dec-12
	Hawaii Gas	$	180,000		$	180,000
	District Energy		157,987			164,382
	Atlantic Aviation		469,193			731,549
	MIC Solar		115,510			83,233
	Total		922,690			1,159,164
	Less: current portion		(168,005	)		(106,580	)
	Long-term portion	$	754,685		$	1,052,584
	On May 31, 2013, Atlantic Aviation FBO Inc. ("AA FBO") and Atlantic Aviation FBO Holdings LLC ("Holdings"), the direct parent of AA FBO, entered into a credit agreement (the "AA Credit Agreement"), that provides the business with a seven-year, $465.0 million senior secured first lien term loan facility. The interest rate on this term loan facility floats at LIBOR plus 2.50%, with minimum LIBOR of 0.75%. The floating rate has effectively been fixed for 6 years at 4.698% using an interest rate swap. AA FBO and Holdings also entered into a five-year, $70.0 million senior secured first lien revolving credit facility that bears interest at LIBOR plus 2.50%. Proceeds of the term loan facility, together with proceeds from the equity offering discussed in Note 9, "Members' Equity", and cash on hand were used to repay all of the amounts outstanding under Atlantic Aviation's existing credit agreement dated September 27, 2007.
	The AA Credit Agreement provides for an uncommitted incremental facility that permits Atlantic Aviation, subject to certain conditions, to increase the term loan facility by up to $50.0 million plus an additional amount if certain senior secured leverage ratio requirements are maintained.
	Atlantic Aviation also has stand-alone debt facilities used to fund construction at its FBOs. At September 30, 2013, the balances on the stand-alone facilities were $5.4 million. The Company has classified $539,000 relating to the stand-alone debt facilities in the current portion of long-term debt in the consolidated condensed balance sheet at September 30, 2013.
	The Company classified $158.0 million relating to District Energy's debt in the current portion of long-term debt in the consolidated condensed balance sheet at September 30, 2013, as its debt facilities mature in September of 2014. During the nine months ended September 30, 2013 and in October of 2013, District Energy paid $6.4 million and $4.9 million, respectively, to its lenders.
	As discussed in Note 4, "Acquisitions", the Company acquired two solar businesses during the fourth quarter of 2012 and assumed $83.2 million in term loan and construction loan debt. The portion that related to the project at Tucson, Arizona, upon substantial completion in December of 2012, was converted to a term loan. At September 30, 2013, $58.2 million was outstanding, of which $2.9 million was recorded as current portion of long-term debt. The portion that related to the project at Presidio, Texas, was a construction loan that was converted to a term loan in July of 2013. At September 30, 2013, $24.7 million was outstanding on the term loan, of which $953,000 was recorded as current portion of long-term debt.
	During the third quarter of 2013, the Company acquired two solar businesses and assumed $22.4 million in construction loan debt from the DMAFB Project acquisition. The construction loan is expected to convert to term debt upon reaching substantial completion of the project. At September 30, 2013, $22.4 million was outstanding on the construction loan debt, of which $646,000 was recorded as current portion of long-term debt.
	In connection with the Valley Center Project acquisition, the Company borrowed $10.2 million of construction loan debt, of which $317,000 was recorded as current portion of long-term debt at September 30, 2013. The construction loan is expected to convert to term debt upon reaching substantial completion of the project.

Derivative_Instruments_and_Hed

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2013
Derivative Instruments and Hedging Activities [Abstract]
Derivative Instruments and Hedging Activities	8. Derivative Instruments and Hedging Activities
	The Company and 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 swap agreements to manage fluctuations in cash flows resulting from interest rate risk on a majority of its debt with a variable-rate component. These 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, 2013, the Company had $922.7 million of current and long-term debt, $693.8 million of which was economically hedged with either an interest rate swap or an interest rate cap and $228.9 million of which was unhedged.
	Effective February 25, 2009 for Atlantic Aviation and effective April 1, 2009 for the Company's other businesses, the Company elected to discontinue hedge accounting. In prior periods, when the Company applied hedge accounting, changes in the fair value of derivatives that effectively offset the variability of cash flows on the Company's debt interest obligations were recorded in other comprehensive income or loss. From the dates that hedge accounting was discontinued, all movements in the fair value of the interest rate swaps are recorded directly through earnings. As interest payments are made, a portion of the other comprehensive loss recorded under hedge accounting is also reclassified into earnings. The Company will reclassify into earnings $1.1 million of net derivative losses, included in accumulated other comprehensive loss as of September 30, 2013, within the next 12 months.
	Excess cash flow generated at District Energy must be applied toward the principal balance of the term loan during the last two years before maturity. District Energy will record additional reclassifications from accumulated other comprehensive loss to interest expense when the business pays down its debt more quickly than anticipated.
	As discussed in Note 7, "Long-Term Debt", Atlantic Aviation entered into a seven-year, $465.0 million senior secured first lien term loan facility credit agreement on May 31, 2013. The interest rate on this term loan facility floats at LIBOR plus 2.50%, with a minimum LIBOR of 0.75%. At September 30, 2013, the term loan had an interest rate cap for $550.0 million notional and will effectively cap LIBOR for this facility at 2.25%. Effective July 31, 2013, Atlantic Aviation entered into an interest rate swap for $465.0 million notional that expires on July 31, 2019. This interest rate swap effectively fixes the interest rate on term loan at 4.698%.
	The Company measures derivative instruments at fair value using the income approach which discounts the future net cash settlements expected under the derivative contracts to a present value. These valuations utilize primarily observable ("level 2") inputs, including contractual terms, interest rates and yield curves observable at commonly quoted intervals.
	The Company's fair value measurements of its derivative instruments and the related location of the liabilities associated with the hedging instruments within the consolidated condensed balance sheets at September 30, 2013 and December 31, 2012 were as follows ($ in thousands):
			Assets (Liabilities) at
			Fair Value(1)
			Interest Rate Contracts Not Designated as Hedging Instruments
	Balance Sheet Location		30-Sep-13			31-Dec-12
	Fair value of derivative instruments - non-current assets(2)		$	4		$	95
	Fair value of derivative instruments - non-current assets(3)			622			-
	Total interest rate derivative contracts - assets(2)(3)		$	626		$	95
	Fair value of derivative instruments - current liabilities(3)		$	(13,336	)	$	(7,450	)
	Fair value of derivative instruments - non-current liabilities(3)			-			(5,360	)
	Total interest rate derivative contracts - liabilities(3)		$	(13,336	)	$	(12,810	)
		-1	Fair value measurements at reporting date were made using significant other observable inputs
			("level 2").
		-2	Derivative contracts represent interest rate caps.
		-3	Derivative contracts represent interest rate swaps.
	The Company's hedging activities for the quarter and nine months ended September 30, 2013 and 2012 and the related location within the consolidated condensed statements of operations were as follows ($ in thousands):
			Derivatives Not Designated as Hedging Instruments
			Amount of Loss Recognized						Amount of Loss Recognized in Interest Expense for the Nine Months Ended September 30,
			in Interest Expense for the
			Quarter Ended September 30,
	Financial Statement Account		2013(1)			2012(2)			2013(1)			2012(2)
	Interest expense - Interest rate cap		$	(38	)	$	(164	)	$	(91	)	$	(164	)
	Interest expense - Interest rate swaps			(7,998	)		(9,204	)		(9,492	)		(20,088	)
	Total		$	(8,036	)	$	(9,368	)	$	(9,583	)	$	(20,252	)
		-1	Net loss recognized in interest expense for the interest rate swap contracts for the quarter and nine months ended September 30, 2013 includes $7.6 million and $8.3 million, respectively, of unrealized derivative losses and $344,000 and $1.2 million, respectively, of derivative losses reclassified from accumulated other comprehensive loss. Net loss recognized in interest expense for the quarter and nine months ended September 30, 2013 also includes $38,000 and $91,000, respectively, of unrealized derivative losses from an interest rate cap contract.
		-2	Net loss recognized in interest expense for the interest rate swap contracts for the quarter and nine months ended September 30, 2012 includes $6.1 million and $14.6 million, respectively, of derivative losses reclassified from accumulated other comprehensive loss and $3.1 million and $5.5 million, respectively, of unrealized derivative losses. Net loss recognized in interest expense for the quarter and nine months ended September 30, 2012 also includes $164,000 of unrealized derivative losses from an interest rate cap contract.
	All of the Company's derivative instruments are collateralized by all of the assets of the respective businesses.

Members_Equity

Members' Equity	9 Months Ended
	Sep. 30, 2013
Members' Equity [Abstract]
Members' Equity	9. Members' Equity
	LLC Interests
	The Company is authorized to issue 500,000,000 LLC Interests. Each outstanding LLC interest of the Company is entitled to one vote on any matter with respect to which holders of LLC Interests are entitled to vote.
	Shelf Registration Statement and MIC Direct
	On April 8, 2013, the Company filed an automatic shelf registration statement on Form S-3 ("shelf") with the Securities and Exchange Commission to issue and sell an indeterminate amount of its LLC Interests and debt securities in one or more future offerings. Along with the shelf, the Company filed a prospectus supplement with respect to a dividend reinvestment/direct stock purchase program named "MIC Direct". The prospectus supplement relates to the issuance of up to 1.0 million additional LLC Interests to participants in MIC Direct. The Company may also choose to fill requests for reinvestment of dividends or share purchases through MIC Direct via open market purchases.
	Equity Offering
	On May 8, 2013, the Company completed an underwritten public offering and sale of 3,756,500 LLC Interests pursuant to the shelf. On May 16, 2013, the Company sold an additional 133,375 LLC Interests in this offering pursuant to the exercise of the underwriters' over-allotment option. The Manager, as selling stockholder, sold 3,182,625 LLC Interests as part of this offering.
	The proceeds from the offering were $217.8 million and $178.2 million, respectively, to the Company and to the Manager, net of underwriting fees and expenses. The Company used the proceeds of the offering to partially repay the existing term loan at Atlantic Aviation as discussed in Note 7, "Long-Term Debt".
	Accumulated Other Comprehensive Loss
	The following represents the changes and balances to the components of accumulated other comprehensive loss for the nine months ended September 30, 2013 and 2012.
			Cash Flow Hedges, net of taxes(1)			Post Retirement Benefit Plans, net of taxes			Translation Adjustment,		Total Accumulated Other Comprehensive Loss,			Noncontrolling Interests			Total Members' Accumulated Other Comprehensive Loss,
									net of taxes(2)		net of taxes						net of taxes
	Balance at December 31, 2011		$	(10,337	)	$	(18,911	)	$	410	$	(28,838	)	$	1,426		$	(27,412	)
	Reclassification of realized losses of derivatives into earnings			8,252			-			-		8,252			(598	)		7,654
	Translation adjustment			-			-			104		104			-			104
	Balance at September 30, 2012		$	(2,085	)	$	(18,911	)	$	514	$	(20,482	)	$	828		$	(19,654	)
	Balance at December 31, 2012		$	(1,538	)	$	(20,466	)	$	514	$	(21,490	)	$	689		$	(20,801	)
	Reclassification of realized losses of derivatives into earnings			733			-			-		733			(351	)		382
	Balance at September 30, 2013		$	(805	)	$	(20,466	)	$	514	$	(20,757	)	$	338		$	(20,419	)
		-1	Reclassification of realized losses of derivatives is composed of (i) pre-tax derivative losses into interest expense of $344,000 and $1.2 million, respectively, and the related tax benefit of $137,000 and $463,000, respectively, in the consolidated condensed statements of operations; and (ii) pre-tax derivative losses as an adjustment to investment in unconsolidated business of $15,000 and $47,000, respectively, and an adjustment to deferred taxes of $5,000 and $16,000, respectively, in the consolidated condensed balance sheet for the quarter and nine months ended September 30, 2013, respectively. For the quarter and nine months ended September 30, 2012, reclassification of realized losses of derivatives is composed of (i) pre-tax derivative losses into interest expense of $6.1 million and $14.6 million, respectively, and the related tax benefit of $3.1 million and $6.5 million, respectively, in the consolidated condensed statements of operations; and (ii) pre-tax derivative losses as an adjustment to investment in unconsolidated business of $87,000 and $261,000, respectively, and an adjustment to deferred taxes of $30,000 and $91,000, respectively, in the consolidated condensed balance sheet.
		-2	Translation adjustment is presented net of taxes of $56,000 for the nine months ended September 30, 2012.

Reportable_Segments

Reportable Segments	9 Months Ended
	Sep. 30, 2013
Reportable Segments [Abstract]
Reportable Segments	10. Reportable Segments
	The Company's businesses consist of four reportable segments: Hawaii Gas, District Energy, Atlantic Aviation and MIC Solar. The Company also has a 50% investment in IMTT, which is accounted for using the equity method. Financial information for IMTT's business as a whole is presented below ($ in thousands):
			As of, and for the Quarter						As of, and for the Nine Months
			Ended September 30,						Ended September 30,
			2013			2012			2013			2012
	Revenue		$	126,447		$	118,601		$	383,753		$	350,368
	Net income		$	19,559		$	16,384		$	67,873		$	53,809
	Interest expense, net			9,376			10,533			17,099			28,914
	Provision for income taxes			15,181			11,631			48,894			37,867
	Depreciation and amortization			19,051			16,992			56,109			51,016
	Casualty losses, net			200			-			6,700			-
	Other non-cash expense			253			369			429			647
	EBITDA excluding non-cash items(1)		$	63,620		$	55,909		$	197,104		$	172,253
	Capital expenditures paid		$	29,154		$	36,720		$	119,652		$	95,406
	Property, equipment, land and leasehold improvements, net			1,256,643			1,159,773			1,256,643			1,159,773
	Total assets balance			1,349,708			1,247,984			1,349,708			1,247,984
		-1	EBITDA consists of earnings before interest, taxes, depreciation and amortization. Non-cash items that are excluded consist of impairments, derivative gains and losses and all other non-cash income and expense items.
	All of the business segments are managed separately and management has chosen to organize the Company around the distinct products and services offered.
	IMTT provides bulk liquid storage and handling services in North America through ten terminals located on the East, West and Gulf Coasts, the Great Lakes region of the United States and partially owned terminals in Quebec and Newfoundland, Canada. IMTT derives the majority of its revenue from storage and handling of petroleum products, various chemicals, renewable fuels, and vegetable and animal oils. Based on storage capacity, IMTT operates one of the largest third-party bulk liquid storage terminal businesses in the United States.
	The revenue from the Hawaii Gas segment is included in revenue from product sales. Revenue is generated from the distribution and sales of synthetic natural gas, or SNG, and liquefied petroleum gas, or LPG. Revenue is primarily a function of the volume of SNG and LPG consumed by customers and the price per thermal unit or gallon charged to customers. Because both SNG and LPG are derived from petroleum, revenue levels, without organic growth, will generally track global oil prices. The utility revenue of Hawaii Gas reflects fuel adjustment charges, or FACs, through which changes in fuel costs are passed through to customers.
	The revenue from the District Energy segment is included in service revenue and financing and equipment lease income. Included in service revenue is capacity revenue, which relates to monthly fixed contract charges, and consumption revenue, which relates to contractual rates applied to actual usage. Financing and equipment lease income relates to direct financing lease transactions and equipment leases to the business' various customers. Finance lease revenue, recorded on the consolidated condensed statements of operations, is the interest portion of lease payments received from equipment leases with various customers primarily in Las Vegas. The principal portion of the cash receipts on these equipment leases are recorded in the operating activities of the consolidated condensed cash flow statements. District Energy provides its services to buildings primarily in the downtown Chicago, Illinois area and to a casino and a shopping mall located in Las Vegas, Nevada.
	The Atlantic Aviation business segment derives the majority of its revenues from fuel sales and from other airport services, including de-icing, aircraft hangarage and other aviation services. All of the revenue of Atlantic Aviation is generated at airports in the U.S., of which there were 62 at September 30, 2013.
	The revenue from the MIC Solar segment is included in revenue from product sales. As of October 28, 2013, the Company invested in five utility-scale photovoltaic power generation facilities that are located in the southwest United States that are expected to have an aggregate generating capacity of 57 megawatts of wholesale electricity to utilities and a U.S. Air Force base. As of September 30, 2013, the Company had invested in four of these facilities. Owners of solar photovoltaic power generation facilities sell substantially all of the electricity generated from these facilities at a fixed price to electric utilities pursuant to a long-term (typically 20 - 25 years) power purchase agreements. Segment information for MIC Solar is not presented for the period ended September 30, 2012 as all acquisitions were completed subsequently.
	Selected information by segment is presented in the following tables. The tables do not include financial data for the Company's equity investment in IMTT.
	Revenue from external customers for the Company's consolidated reportable segments was as follows ($ in thousands):
			Quarter Ended September 30, 2013
			Hawaii			District			Atlantic			MIC			Total Reportable
			Gas			Energy			Aviation			Solar			Segments
	Revenue from Product Sales
	Product sales		$	28,488		$	-		$	141,032		$	2,649		$	172,169
	Product sales - utility			32,981			-			-			-			32,981
				61,469			-			141,032			2,649			205,150
	Service Revenue
	Other services			-			692			42,166			-			42,858
	Cooling capacity revenue			-			5,780			-			-			5,780
	Cooling consumption revenue			-			9,114			-			-			9,114
				-			15,586			42,166			-			57,752
	Financing and Lease Income
	Financing and equipment lease			-			817			-			-			817
				-			817			-			-			817
	Total Revenue		$	61,469		$	16,403		$	183,198		$	2,649		$	263,719
			Quarter Ended September 30, 2012
			Hawaii			District			Atlantic			Total Reportable
			Gas			Energy			Aviation			Segments
	Revenue from Product Sales
	Product sales		$	26,894		$	-		$	139,491		$	166,385
	Product sales - utility			35,535			-			-			35,535
				62,429			-			139,491			201,920
	Service Revenue
	Other services			-			702			39,409			40,111
	Cooling capacity revenue			-			5,613			-			5,613
	Cooling consumption revenue			-			10,490			-			10,490
				-			16,805			39,409			56,214
	Financing and Lease Income
	Financing and equipment lease			-			1,119			-			1,119
				-			1,119			-			1,119
	Total Revenue		$	62,429		$	17,924		$	178,900		$	259,253
			Nine Months Ended September 30, 2013
			Hawaii			District			Atlantic			MIC			Total Reportable
			Gas			Energy			Aviation			Solar			Segments
	Revenue from Product Sales
	Product sales		$	88,993		$	-		$	417,305		$	7,167		$	513,465
	Product sales - utility			104,095			-			-			-			104,095
				193,088			-			417,305			7,167			617,560
Service Revenue
Other services			-			2,139			124,535			-			126,674
Cooling capacity revenue			-			17,197			-			-			17,197
Cooling consumption revenue			-			16,282			-			-			16,282
			-			35,618			124,535			-			160,153
Financing and Lease Income
Financing and equipment lease			-			2,779			-			-			2,779
			-			2,779			-			-			2,779
Total Revenue		$	193,088		$	38,397		$	541,840		$	7,167		$	780,492
		Nine Months Ended September 30, 2012
		Hawaii			District			Atlantic			Total Reportable
		Gas			Energy			Aviation			Segments
Revenue from Product Sales
Product sales		$	88,271		$	-		$	420,197		$	508,468
Product sales - utility			110,656			-			-			110,656
			198,927			-			420,197			619,124
Service Revenue
Other services			-			2,023			120,502			122,525
Cooling capacity revenue			-			16,675			-			16,675
Cooling consumption revenue			-			20,853			-			20,853
			-			39,551			120,502			160,053
Financing and Lease Income
Financing and equipment lease			-			3,448			-			3,448
			-			3,448			-			3,448
Total Revenue		$	198,927		$	42,999		$	540,699		$	782,625
In accordance with FASB ASC 280 Segment Reporting, the Company has disclosed earnings before interest, taxes, depreciation and amortization (EBITDA) excluding non-cash items as a key performance metric relied on by management in the evaluation of the Company's performance. Non-cash items include impairments, derivative gains and losses and adjustments for other non-cash items reflected in the statements of operations. The Company believes EBITDA excluding non-cash items provides additional insight into the performance of the operating businesses relative to each other and similar businesses without regard to their capital structure, and their ability to service or reduce debt, fund capital expenditures and/or support distributions to the holding company. EBITDA excluding non-cash items is reconciled to net income or loss.
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 on consolidation.
		Quarter Ended September 30, 2013
		Hawaii			District			Atlantic			MIC			Total Reportable
		Gas			Energy			Aviation			Solar			Segments
Net income		$	4,827		$	2,258		$	7,569		$	1,249		$	15,903
Interest expense, net			2,097			1,275			11,481			897			15,750
Provision (benefit) for income taxes			3,191			1,584			5,185			(27	)		9,933
Depreciation			1,849			1,620			6,094			2,096			11,659
Amortization of intangibles			311			329			7,978			-			8,618
Other non-cash expense (income)(1)			604			205			(1	)		(4,010	)		(3,202	)
EBITDA excluding non-cash items		$	12,879		$	7,271		$	38,306		$	205		$	58,661
	-1	Other non-cash expense (income) for MIC Solar represents the adjustment for noncontrolling interest.
		Quarter Ended September 30, 2012
		Hawaii			District			Atlantic			Total Reportable
		Gas			Energy			Aviation			Segments
Net income		$	2,472		$	2,226		$	7,784		$	12,482
Interest expense, net			5,695			2,065			7,381			15,141
Provision for income taxes			1,631			1,560			6,531			9,722
Depreciation			1,759			1,685			5,837			9,281
Amortization of intangibles			206			345			8,249			8,800
Gain on disposal of assets			-			-			(1,850	)		(1,850	)
Other non-cash expense (income)			869			156			(39	)		986
EBITDA excluding non-cash items		$	12,632		$	8,037		$	33,893		$	54,562
		Nine Months Ended September 30, 2013
		Hawaii			District			Atlantic			MIC			Total Reportable
		Gas			Energy			Aviation			Solar			Segments
Net income		$	16,196		$	2,563		$	26,613		$	1,242		$	46,614
Interest expense, net			5,040			3,793			20,206			2,121			31,160
Provision for income taxes			10,669			1,797			18,009			1,175			31,650
Depreciation			5,573			5,021			17,983			5,174			33,751
Amortization of intangibles			935			997			23,934			-			25,866
Loss on extinguishment			-			-			2,434			-			2,434
of debt
Loss on disposal of assets			-			-			106			-			106
Loss from customer contract termination			-			1,626			-			-			1,626
Other non-cash expense (income)(1)			1,592			413			(116	)		(6,555	)		(4,666	)
EBITDA excluding non-cash items		$	40,005		$	16,210		$	109,169		$	3,157		$	168,541
	-1	Other non-cash expense (income) for MIC Solar represents the adjustment for noncontrolling interest.
		Nine Months Ended September 30, 2012
		Hawaii			District			Atlantic			Total Reportable
		Gas			Energy			Aviation			Segments
Net income		$	14,338		$	3,098		$	20,426		$	37,862
Interest expense, net			9,102			6,521			23,448			39,071
Provision for income taxes			9,343			2,171			15,815			27,329
Depreciation			5,191			5,036			17,513			27,740
Amortization of intangibles			617			1,027			24,248			25,892
Gain on disposal of assets			-			-			(1,803	)		(1,803	)
Other non-cash expense (income)			2,671			425			(268	)		2,828
EBITDA excluding non-cash items		$	41,262		$	18,278		$	99,379		$	158,919
Reconciliation of total reportable segments' EBITDA excluding non-cash items to consolidated net income (loss) before income taxes are as follows ($ in thousands):
		Quarter Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
Total reportable segments EBITDA excluding		$	58,661		$	54,562		$	168,541		$	158,919
non-cash items
Interest income			39			110			182			116
Interest expense			(15,767	)		(15,144	)		(31,190	)		(39,076	)
Depreciation(1)			(11,659	)		(9,281	)		(33,751	)		(27,740	)
Amortization of intangibles			(8,618	)		(8,800	)		(25,866	)		(25,892	)
Loss on extinguishment of debt			-			-			(2,434	)		-
Gain (loss) on disposal of assets			-			1,850			(106	)		1,803
Loss from customer contract termination			-			-			(1,626	)		-
Selling, general and administrative - corporate			(1,278	)		(2,005	)		(4,987	)		(9,221	)
Fees to manager			(15,242	)		(29,353	)		(76,912	)		(39,108	)
Equity in earnings and amortization charges of investee			8,576			6,989			30,327			23,295
Other (expense) income, net			(634	)		(807	)		1,070			(2,281	)
Total consolidated net income (loss) before income taxes		$	14,078		$	(1,879	)	$	23,248		$	40,815
	-1	Depreciation includes depreciation expense for District Energy, which is reported in cost of services in the consolidated condensed statement of operations.
Capital expenditures for the Company's reportable segments were as follows ($ in thousands):
		Quarter Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
Hawaii Gas		$	5,357		$	3,816		$	15,402		$	11,371
District Energy			26			645			559			1,092
Atlantic Aviation			5,511			5,649			16,255			12,980
MIC Solar			2,090			-			19,219			-
Total		$	12,984		$	10,110		$	51,435		$	25,443
Property, equipment, land and leasehold improvements, goodwill and total assets for the Company's reportable segments as of September 30th were as follows ($ in thousands):
		Property, Equipment, Land and Leasehold Improvements						Goodwill						Total Assets
		2013			2012			2013			2012			2013			2012
Hawaii Gas		$	178,954		$	164,088		$	120,193		$	120,193		$	380,933		$	375,911
District Energy			131,761			137,880			17,946			18,647			200,782			215,141
Atlantic Aviation			259,010			257,128			375,800			375,800			1,315,977			1,356,770
MIC Solar			207,342			-			-			-			229,639			-
Total		$	777,067		$	559,096		$	513,939		$	514,640		$	2,127,331		$	1,947,822
Reconciliation of reportable segments' total assets to consolidated total assets ($ in thousands):
		As of September 30,
		2013			2012
Total assets of reportable segments		$	2,127,331		$	1,947,822
Investment in IMTT			86,554			125,299
Corporate and other			35,289			89,770
Total consolidated assets		$	2,249,174		$	2,162,891

Related_Party_Transactions

Related Party Transactions

9 Months Ended

Sep. 30, 2013

Related Party Transactions [Abstract]

Related Party Transactions

11. Related Party Transactions

Management Services Agreement with Macquarie Infrastructure Management (USA) Inc. (the Manager)

At September 30, 2013 and December 31, 2012, the Manager held 3,738,873 LLC Interests and 5,480,929 LLC Interests, respectively, of the Company. Pursuant to the terms of the management services agreement, or Management Agreement, the Manager may sell these LLC interest at any time. As discussed in Note 9, "Members' Equity", as part of the Company's equity offering completed in May of 2013, the Manager sold 3,182,625 of its LLC Interests and received proceeds of $178.2 million, net of underwriting fees and expenses. Under the Management Agreement, the Manager, at its option, may reinvest performance fees and base management fees in LLC Interests of the Company.

Since January 1, 2012, the Company paid the Manager cash dividends on LLC Interests held for the following periods:

Declared

Period Covered

$ per LLC Interest

Record Date

Payable Date

Amount Paid to Manager (in thousands)

25-Oct-13

Third quarter 2013

$

0.875

11-Nov-13

14-Nov-13

$

-1

29-Jul-13

Second quarter 2013

$

0.875

12-Aug-13

15-Aug-13

$

2,744

26-Apr-13

First quarter 2013

$

0.6875

13-May-13

16-May-13

$

1,872

12-Dec-12

Fourth quarter 2012

$

0.6875

24-Dec-12

28-Dec-12

$

3,768

29-Oct-12

Third quarter 2012

$

0.6875

12-Nov-12

15-Nov-12

$

3,290

30-Jul-12

Second quarter 2012

$

0.625

13-Aug-12

16-Aug-12

$

2,920

30-Apr-12

First quarter 2012

$

0.2

14-May-12

17-May-12

$

905

1-Feb-12

Fourth quarter 2011

$

0.2

5-Mar-12

8-Mar-12

$

878

-1

The amount of dividend payable to the Manager for the third quarter of 2013 will be determined on November 11, 2013, the record date.

Under the Management Agreement, the Manager manages the Company's day-to-day operations and oversees the management teams of the Company's operating businesses. In addition, the Manager has the right to appoint the Chairman of the Board of the Company and an alternate, 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 base management fee based primarily on the Company's market capitalization, and potentially a performance fee, based on the performance of the Company's stock relative to the applicable utilities index. For the quarter and nine months ended September 30, 2013, the Company incurred base management fees of $8.3 million and $23.5 million, respectively, and performance fees of $6.9 million and $53.4 million, respectively, payable to the Manager. The Manager elected to reinvest the base management and performance fees in additional LLC Interests. For the quarter and nine months ended September 30, 2012, the Company incurred base management fees of $5.8 million and $15.6 million, respectively, payable to the Manager. For the quarter and nine months ended September 30, 2012, the Company recorded a performance fee payable of $23.5 million to the Manager.

The unpaid portion of the base management fees and performance fees at the end of each reporting period is included in due to manager-related party in the consolidated condensed balance sheets. The following table shows the Manager's election to reinvest its base management fees and performance fees, if any, in additional LLC Interests:

Period

Base Management

Performance

LLC Interests Issued

Issue Date

Fee Amount

Fee Amount

($ in thousands)

($ in thousands)

2013 Activities:

Third quarter 2013

$

8,336

$

6,906

-1

-1

Second quarter 2013

8,053

24,440

603,936

4-Sep-13

First quarter 2013

7,135

22,042

522,638

5-Jun-13

2012 Activities:

Fourth quarter 2012

$

6,299

$

43,820

980,384

20-Mar-13

Third quarter 2012

5,844

23,509

695,068

5-Dec-12

Second quarter 2012

4,760

-

113,847

30-Aug-12

First quarter 2012

4,995

-

147,682

31-May-12

-1

LLC interests for the third quarter of 2013 base management and performance fee will be issued to the Manager during the fourth quarter of 2013.

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 and investments, 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, 2013, the Manager charged the Company $137,000 and $426,000, respectively, for reimbursement of out-of-pocket expenses compared with $145,000 and $345,000, for the quarter and nine months ended September 30, 2012, respectively. The unpaid portion of the out-of-pocket expenses at the end of the reporting period is included in due to manager-related party in the consolidated condensed balance sheets.

Second Amended and Restated Management Service Agreement

On September 30, 2013, Macquarie Infrastructure Company LLC entered into a Second Amended and Restated Management Services Agreement (the "Amended Agreement"), among the Company, Macquarie Infrastructure Company Inc. and the Manager. The amendments to the agreement revise the payment mechanics related to the base management fee payable by the Company to the Manager, and align the share price used to calculate the base management fee with the share price at which the Manager may reinvest the base management fee in LLC Interests. Effective October 1, 2013, pursuant to the Amended Agreement, base management fees will be calculated and payable monthly rather than quarterly. Performance fees will continue to be calculated and, if generated, paid quarterly. No substantive changes to the formulas or methodology used to calculate the amount of the base management or performance fees that may be due to the Manager were made. The Amended Agreement also makes certain non-substantive changes to eliminate parties and provisions that are no longer relevant.

Advisory and Other Services from the Macquarie Group

The Macquarie Group, and wholly-owned subsidiaries within the Macquarie Group, including Macquarie Bank Limited, or MBL, and Macquarie Capital (USA) Inc., or 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 members' 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.

During 2013, the Company engaged MCUSA as Joint Bookrunner in connection with the refinancing of the long-term debt facilities of Atlantic Aviation. Atlantic Aviation closed the refinancing on May 31, 2013. Atlantic Aviation paid $4.0 million to MCUSA for such services, of which $12,000 related to out-of-pocket expenses.

As discussed in Note 9, "Members' Equity", the Company completed an underwritten public offering and sale of LLC interests in May 2013. MCUSA served as a joint book-running manager and an underwriter in this offering and received $2.4 million from the Company for such services.

During the fourth quarter of 2012, MIC engaged MCUSA in connection with its ongoing initiative to bring Liquefied Natural Gas to the state of Hawaii. During the nine months ended September 30, 2013, the business incurred $132,000, of which $7,000 related to out-of-pocket expenses incurred in the first quarter of 2013, in fees to MCUSA for such services.

During 2012, MIC engaged MCUSA as a Joint Bookrunner and Lead Placement Agent on the refinancing of a portion of Hawaii Gas's long-term debt facilities. MIC incurred and paid $100,000 in fees to MCUSA relating to the services provided.

Long-Term Debt

As discussed in Note 7, "Long-Term Debt", Atlantic Aviation entered into a credit agreement on May 31, 2013. The credit agreement provides for a seven-year, $465.0 million senior secured first lien term loan facility and a five-year, $70.0 million senior secured first lien revolving credit facility. The $70.0 million revolving credit facility is provided by various financial institutions, including MBL which provides $15.7 million. At September 30, 2013, the revolving credit facility remains undrawn. For the quarter and nine months ended September 30, 2013, Atlantic Aviation incurred $18,000 and $27,000, respectively, in commitment fees related to MBL's portion of the revolving credit facility.

Derivative Instruments and Hedging Activities

The Company had derivative instruments in place to fix the interest rate on certain outstanding variable rate term loan facilities. Prior to the refinancing of Hawaii Gas' debt in August of 2012, Hawaii Gas had $160.0 million of its term loans hedged, of which MBL was providing the interest rate swaps for a notional amount of $48.0 million. The remainder of the swaps were from an unrelated third party. During 2012, up to the date of refinancing, Hawaii Gas made payments to MBL of $1.0 million in relation to these swaps.

On August 8, 2012, Hawaii Gas completed the refinancing of its long-term debt facilities. At the same time, Hawaii Gas paid off the outstanding balance on its interest rate swap totaling $8.7 million, of which $2.6 million was paid to MBL.

Other Transactions

Macquarie, through the Macquarie Insurance Facility (MIF), has an aggregated insurance buying program. By combining the insurance premiums of Macquarie owned and managed funds, MIF has been able to deliver very competitive terms to businesses that participate in the facility. MIF earns a commission from the insurers. No payments were made to MIF by the Company during the nine months ended September 30, 2013 and 2012. In February of 2013, the Company renewed its Directors and Officers liability insurance utilizing several of the MIF insurers.

Atlantic Aviation, Hawaii Gas, District Energy and MIC Solar purchase and renew property and casualty insurance coverage on an ongoing basis from insurance underwriters who then pay commissions to MIF. For the nine months ended September 30, 2013 and 2012, no payments were made directly to MIF for property and casualty insurance.

Atlantic Aviation entered into a copiers lease agreement with Macquarie Equipment Finance, or MEF, an indirect subsidiary of Macquarie Group Limited. For the quarter and nine months ended September 30, 2013 and 2012, Atlantic Aviation incurred $6,000 and $17,000, respectively, in lease expense on these copiers. As of September 30, 2013 and 2012, Atlantic Aviation had prepaid the October monthly payment to MEF for $2,000, which is included in prepaid expenses in the consolidated condensed balance sheet for respective periods.

Hawaii Gas entered into licensing agreements with Utility Service Partners, Inc. and America's Water Heater Rentals, LLC, both indirect subsidiaries of Macquarie Group Limited, to enable these entities to offer products and services to Hawaii Gas's customer base. No payments were made under these arrangements during the nine months ended September 30, 2013 and 2012.

Macquarie Energy North America Trading Inc., or MENAT, an indirect subsidiary of Macquarie Group Limited, entered into an agreement with IMTT to rent a 147,000 barrel tank for one month during the quarter ended September 30, 2012. IMTT recorded revenue from MENAT of $151,000 for this transaction. As of September 30, 2012, IMTT had a receivable balance of $122,000, which was subsequently collected.

In 2008, Macquarie Global Opportunities Partners, or MGOP, a private equity fund managed by the Macquarie Group, acquired Sentient Flight Group ("Sentient"), a jet membership, retail charter and fuel management business. Sentient was an existing customer of Atlantic Aviation. On May 31, 2012, MGOP sold its interest in Sentient to a third party. For the five months ended May 31, 2012, Atlantic Aviation recorded $9.3 million in revenue from Sentient. As of September 30, 2012, Atlantic Aviation had no receivables from Sentient.

In addition, the Company and several of its subsidiaries have entered into a licensing agreement with the Macquarie Group related to the use of the Macquarie name and trademark. The Macquarie Group does not charge the Company any fees for this license.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Taxes [Abstract]
Income Taxes	12. Income Taxes
	The Company expects to incur federal consolidated taxable income for the year ending December 31, 2013, which will be fully offset by the Company's federal NOL carryforwards. The Company believes that it will be able to utilize its federal prior year NOLs, except for approximately $7.8 million. The Company has not provided a valuation allowance against any deferred tax assets generated in the nine months ended September 30, 2013, except for approximately $2.6 million for certain state NOLs. Two of the Company's businesses, IMTT and District Energy, are less than 80% owned by the Company and those businesses file separate federal consolidated income tax returns.
	Uncertain Tax Positions
	At December 31, 2012, the Company and its subsidiaries had a reserve of approximately $472,000 for benefits taken during 2012 and prior tax periods attributable to tax positions for which the probability of recognition is considered to be less than more likely than not. During the nine months ended September 30, 2013, the Company concluded that the reserve is no longer required. Approximately $362,000 of the reserve was used in settling an audit of the Company.
	The balance of the reserve has been reflected in the Company's income tax expense for the nine months ended September 30, 2013. The Company does not expect to establish an additional reserve for the year ended December 31, 2013.

Legal_Proceedings_and_Continge

Legal Proceedings and Contingencies	9 Months Ended
	Sep. 30, 2013
Legal Proceedings and Contingencies [Abstract]
Legal Proceedings and Contingencies	13. Legal Proceedings and Contingencies
	The subsidiaries of MIC Inc. 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.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2013
Subsequent Events [Abstract]
Subsequent Events	14. Subsequent Events
	Dividend
	On October 25, 2013, the board of directors declared a dividend of $0.875 per share for the quarter ended September 30, 2013, which is expected to be paid on November 14, 2013 to holders of record on November 11, 2013.
	IMTT Third Quarter 2013 Distribution
	Distributions calculated in accordance with the Shareholders' Agreement between MIC and its co-investor in IMTT ("Voting Trust") for the third quarter of 2013 were $40.9 million ($20.5 million per shareholder). On October 24, 2013, the Board of IMTT unanimously declared a distribution of this amount. The third quarter of 2013 distribution is expected to be paid on or about October 30, 2013.
	Solar Acquisition - Ramona
	On October 8, 2013, the Company completed the acquisition of the contracted solar power generation facility located near Ramona, California ("the Ramona Project") for a purchase price of $6.1 million. This was funded by a capital investment by the Company. This facility is expected to provide approximately 7 megawatts of wholesale electricity. In connection with the acquisition, the Company entered into a construction loan and drawdown $10.4 million in construction financing. The Ramona Project is expected to commence operations during the first quarter of 2014. Upon commencement of operations, the construction loan is expected to convert to term debt. The Ramona acquisition will be accounted for as a business combination. Accordingly, the results of operations of the Ramona Project will be included in the consolidated statement of operations as of the acquisition date.

Income_per_Share_Tables

Income per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Income per Share [Abstract]
Schedule of Reconciliation of Income per Share
		Quarter Ended				Nine Months Ended September 30,
		September 30,
		2013		2012		2013		2012
	Weighted average number of shares outstanding: basic		53,043,185		46,684,627		50,525,617		46,524,980
	Dilutive effect of restricted stock unit grants		12,910		-		15,896		20,923
	Weighted average number of shares outstanding: diluted		53,056,095		46,684,627		50,541,513		46,545,903

Acquisitions_Tables

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2013
Solar Power Generation Businesses Tucson, Arizona [Member]
Business Acquisition [Line Items]
Schedule of Assets Acquired and Liabilities Assumed
	Restricted cash - current	$	538
	Total current assets		538
	Property and equipment		115,597
	Restricted cash - non-current		2,219
	Total assets acquired	$	118,354
	Current portion of long-term debt	$	1,842
	Total current liabilities		1,842
	Long-term debt		57,087
	Total liabilities assumed	$	58,929
	Net assets acquired	$	59,425
Solar Power Generation Businesses Presidio, Texas [Member]
Business Acquisition [Line Items]
Schedule of Assets Acquired and Liabilities Assumed
	Restricted cash - current	$	2,596
	Total current assets		2,596
	Property and equipment		25,837
	Restricted cash - non-current		1,000
	Deferred financing costs		263
	Total assets acquired	$	29,696
	Current portion of long-term debt	$	497
	Total current liabilities		497
	Long-term debt		23,807
	Total liabilities assumed	$	24,304
	Net assets acquired	$	5,392
Davis Monthan Air Force Base [Member]
Business Acquisition [Line Items]
Schedule of Assets Acquired and Liabilities Assumed
	Restricted cash - current	$	2,708
	Total current assets		2,708
	Property and equipment		27,593
	Total assets acquired	$	30,301
	Current liabilities	$	32
	Current portion of long-term debt		321
	Total current liabilities		353
	Long-term debt		22,040
	Total liabilities assumed	$	22,393
	Net assets acquired	$	7,908
Valley Center [Member]
Business Acquisition [Line Items]
Schedule of Assets Acquired and Liabilities Assumed
	Restricted cash - current	$	7,614
	Other current assets		7
	Total current assets		7,621
	Property and equipment		8,846
	Deferred financing costs		502
	Total assets acquired	$	16,969
	Current liabilities	$	10,211
	Total liabilities assumed	$	10,211
	Net assets acquired	$	6,758

Property_Equipment_Land_and_Le1

Property, Equipment, Land and Leasehold Improvements (Tables)	9 Months Ended
	Sep. 30, 2013
Property, Equipment, Land and Leasehold Improvements [Abstract]
Schedule of Property and Equipment
		30-Sep-13			31-Dec-12
	Land	$	4,618		$	4,618
	Easements		5,624			5,624
	Buildings		25,133			24,993
	Leasehold and land improvements		340,929			337,632
	Machinery and equipment		562,617			503,499
	Furniture and fixtures		10,760			10,215
	Construction in progress		77,316			41,370
	Property held for future use		1,975			1,768
			1,028,972			929,719
	Less: accumulated depreciation		(251,905	)		(221,688	)
	Property, equipment, land and leasehold improvements, net	$	777,067		$	708,031

Intangible_Assets_Tables

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2013
Intangible Assets [Abstract]
Schedule of Intangible Assets
		30-Sep-13			31-Dec-12
	Contractual arrangements	$	745,841		$	745,841
	Non-compete agreements		9,575			9,575
	Customer relationships		79,445			79,445
	Leasehold rights		2,121			3,330
	Trade names		15,671			15,671
	Technology		460			460
			853,113			854,322
	Less: accumulated amortization		(252,768	)		(227,420	)
	Intangible assets, net	$	600,345		$	626,902
Schedule of Goodwill
	Goodwill acquired in business combinations, net of disposals	$	637,139
	Less: accumulated impairment charges		(123,200	)
	Balance at September 30, 2013	$	513,939

LongTerm_Debt_Tables

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2013
Long-Term Debt [Abstract]
Schedule of Long-Term Debt
		30-Sep-13			31-Dec-12
	Hawaii Gas	$	180,000		$	180,000
	District Energy		157,987			164,382
	Atlantic Aviation		469,193			731,549
	MIC Solar		115,510			83,233
	Total		922,690			1,159,164
	Less: current portion		(168,005	)		(106,580	)
	Long-term portion	$	754,685		$	1,052,584

Derivative_Instruments_and_Hed1

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2013
Derivative Instruments and Hedging Activities [Abstract]
Schedule of Fair Value of Derivative Instruments
			Assets (Liabilities) at
			Fair Value(1)
			Interest Rate Contracts Not Designated as Hedging Instruments
	Balance Sheet Location		30-Sep-13			31-Dec-12
	Fair value of derivative instruments - non-current assets(2)		$	4		$	95
	Fair value of derivative instruments - non-current assets(3)			622			-
	Total interest rate derivative contracts - assets(2)(3)		$	626		$	95
	Fair value of derivative instruments - current liabilities(3)		$	(13,336	)	$	(7,450	)
	Fair value of derivative instruments - non-current liabilities(3)			-			(5,360	)
	Total interest rate derivative contracts - liabilities(3)		$	(13,336	)	$	(12,810	)
		-1	Fair value measurements at reporting date were made using significant other observable inputs
			("level 2").
		-2	Derivative contracts represent interest rate caps.
		-3	Derivative contracts represent interest rate swaps.
Schedule of Location of Hedging Activities
			Derivatives Not Designated as Hedging Instruments
			Amount of Loss Recognized						Amount of Loss Recognized in Interest Expense for the Nine Months Ended September 30,
			in Interest Expense for the
			Quarter Ended September 30,
	Financial Statement Account		2013(1)			2012(2)			2013(1)			2012(2)
	Interest expense - Interest rate cap		$	(38	)	$	(164	)	$	(91	)	$	(164	)
	Interest expense - Interest rate swaps			(7,998	)		(9,204	)		(9,492	)		(20,088	)
	Total		$	(8,036	)	$	(9,368	)	$	(9,583	)	$	(20,252	)
		-1	Net loss recognized in interest expense for the interest rate swap contracts for the quarter and nine months ended September 30, 2013 includes $7.6 million and $8.3 million, respectively, of unrealized derivative losses and $344,000 and $1.2 million, respectively, of derivative losses reclassified from accumulated other comprehensive loss. Net loss recognized in interest expense for the quarter and nine months ended September 30, 2013 also includes $38,000 and $91,000, respectively, of unrealized derivative losses from an interest rate cap contract.
		-2	Net loss recognized in interest expense for the interest rate swap contracts for the quarter and nine months ended September 30, 2012 includes $6.1 million and $14.6 million, respectively, of derivative losses reclassified from accumulated other comprehensive loss and $3.1 million and $5.5 million, respectively, of unrealized derivative losses. Net loss recognized in interest expense for the quarter and nine months ended September 30, 2012 also includes $164,000 of unrealized derivative losses from an interest rate cap contract.

Members_Equity_Tables

Members' Equity (Tables)	9 Months Ended
	Sep. 30, 2013
Members' Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss
			Cash Flow Hedges, net of taxes(1)			Post Retirement Benefit Plans, net of taxes			Translation Adjustment,		Total Accumulated Other Comprehensive Loss,			Noncontrolling Interests			Total Members' Accumulated Other Comprehensive Loss,
									net of taxes(2)		net of taxes						net of taxes
	Balance at December 31, 2011		$	(10,337	)	$	(18,911	)	$	410	$	(28,838	)	$	1,426		$	(27,412	)
	Reclassification of realized losses of derivatives into earnings			8,252			-			-		8,252			(598	)		7,654
	Translation adjustment			-			-			104		104			-			104
	Balance at September 30, 2012		$	(2,085	)	$	(18,911	)	$	514	$	(20,482	)	$	828		$	(19,654	)
	Balance at December 31, 2012		$	(1,538	)	$	(20,466	)	$	514	$	(21,490	)	$	689		$	(20,801	)
	Reclassification of realized losses of derivatives into earnings			733			-			-		733			(351	)		382
	Balance at September 30, 2013		$	(805	)	$	(20,466	)	$	514	$	(20,757	)	$	338		$	(20,419	)
		-1	Reclassification of realized losses of derivatives is composed of (i) pre-tax derivative losses into interest expense of $344,000 and $1.2 million, respectively, and the related tax benefit of $137,000 and $463,000, respectively, in the consolidated condensed statements of operations; and (ii) pre-tax derivative losses as an adjustment to investment in unconsolidated business of $15,000 and $47,000, respectively, and an adjustment to deferred taxes of $5,000 and $16,000, respectively, in the consolidated condensed balance sheet for the quarter and nine months ended September 30, 2013, respectively. For the quarter and nine months ended September 30, 2012, reclassification of realized losses of derivatives is composed of (i) pre-tax derivative losses into interest expense of $6.1 million and $14.6 million, respectively, and the related tax benefit of $3.1 million and $6.5 million, respectively, in the consolidated condensed statements of operations; and (ii) pre-tax derivative losses as an adjustment to investment in unconsolidated business of $87,000 and $261,000, respectively, and an adjustment to deferred taxes of $30,000 and $91,000, respectively, in the consolidated condensed balance sheet.
		-2	Translation adjustment is presented net of taxes of $56,000 for the nine months ended September 30, 2012.

Reportable_Segments_Tables

Reportable Segments (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Revenue From External Customers
			Quarter Ended September 30, 2013
			Hawaii			District			Atlantic			MIC			Total Reportable
			Gas			Energy			Aviation			Solar			Segments
	Revenue from Product Sales
	Product sales		$	28,488		$	-		$	141,032		$	2,649		$	172,169
	Product sales - utility			32,981			-			-			-			32,981
				61,469			-			141,032			2,649			205,150
	Service Revenue
	Other services			-			692			42,166			-			42,858
	Cooling capacity revenue			-			5,780			-			-			5,780
	Cooling consumption revenue			-			9,114			-			-			9,114
				-			15,586			42,166			-			57,752
	Financing and Lease Income
	Financing and equipment lease			-			817			-			-			817
				-			817			-			-			817
	Total Revenue		$	61,469		$	16,403		$	183,198		$	2,649		$	263,719
			Quarter Ended September 30, 2012
			Hawaii			District			Atlantic			Total Reportable
			Gas			Energy			Aviation			Segments
	Revenue from Product Sales
	Product sales		$	26,894		$	-		$	139,491		$	166,385
	Product sales - utility			35,535			-			-			35,535
				62,429			-			139,491			201,920
	Service Revenue
	Other services			-			702			39,409			40,111
	Cooling capacity revenue			-			5,613			-			5,613
	Cooling consumption revenue			-			10,490			-			10,490
				-			16,805			39,409			56,214
	Financing and Lease Income
	Financing and equipment lease			-			1,119			-			1,119
				-			1,119			-			1,119
	Total Revenue		$	62,429		$	17,924		$	178,900		$	259,253
			Nine Months Ended September 30, 2013
			Hawaii			District			Atlantic			MIC			Total Reportable
			Gas			Energy			Aviation			Solar			Segments
	Revenue from Product Sales
	Product sales		$	88,993		$	-		$	417,305		$	7,167		$	513,465
	Product sales - utility			104,095			-			-			-			104,095
				193,088			-			417,305			7,167			617,560
	Service Revenue
	Other services			-			2,139			124,535			-			126,674
	Cooling capacity revenue			-			17,197			-			-			17,197
	Cooling consumption revenue			-			16,282			-			-			16,282
				-			35,618			124,535			-			160,153
	Financing and Lease Income
	Financing and equipment lease			-			2,779			-			-			2,779
				-			2,779			-			-			2,779
	Total Revenue		$	193,088		$	38,397		$	541,840		$	7,167		$	780,492
			Nine Months Ended September 30, 2012
			Hawaii			District			Atlantic			Total Reportable
			Gas			Energy			Aviation			Segments
	Revenue from Product Sales
	Product sales		$	88,271		$	-		$	420,197		$	508,468
	Product sales - utility			110,656			-			-			110,656
				198,927			-			420,197			619,124
	Service Revenue
	Other services			-			2,023			120,502			122,525
	Cooling capacity revenue			-			16,675			-			16,675
	Cooling consumption revenue			-			20,853			-			20,853
				-			39,551			120,502			160,053
	Financing and Lease Income
	Financing and equipment lease			-			3,448			-			3,448
				-			3,448			-			3,448
Total Revenue		$	198,927		$	42,999		$	540,699		$	782,625
Schedule of EBITDA for Reportable Segments
			Quarter Ended September 30, 2013
			Hawaii			District			Atlantic			MIC			Total Reportable
			Gas			Energy			Aviation			Solar			Segments
	Net income		$	4,827		$	2,258		$	7,569		$	1,249		$	15,903
	Interest expense, net			2,097			1,275			11,481			897			15,750
	Provision (benefit) for income taxes			3,191			1,584			5,185			(27	)		9,933
	Depreciation			1,849			1,620			6,094			2,096			11,659
	Amortization of intangibles			311			329			7,978			-			8,618
	Other non-cash expense (income)(1)			604			205			(1	)		(4,010	)		(3,202	)
	EBITDA excluding non-cash items		$	12,879		$	7,271		$	38,306		$	205		$	58,661
		-1	Other non-cash expense (income) for MIC Solar represents the adjustment for noncontrolling interest.
			Quarter Ended September 30, 2012
			Hawaii			District			Atlantic			Total Reportable
			Gas			Energy			Aviation			Segments
	Net income		$	2,472		$	2,226		$	7,784		$	12,482
	Interest expense, net			5,695			2,065			7,381			15,141
	Provision for income taxes			1,631			1,560			6,531			9,722
	Depreciation			1,759			1,685			5,837			9,281
	Amortization of intangibles			206			345			8,249			8,800
	Gain on disposal of assets			-			-			(1,850	)		(1,850	)
	Other non-cash expense (income)			869			156			(39	)		986
	EBITDA excluding non-cash items		$	12,632		$	8,037		$	33,893		$	54,562
			Nine Months Ended September 30, 2013
			Hawaii			District			Atlantic			MIC			Total Reportable
			Gas			Energy			Aviation			Solar			Segments
	Net income		$	16,196		$	2,563		$	26,613		$	1,242		$	46,614
	Interest expense, net			5,040			3,793			20,206			2,121			31,160
	Provision for income taxes			10,669			1,797			18,009			1,175			31,650
	Depreciation			5,573			5,021			17,983			5,174			33,751
	Amortization of intangibles			935			997			23,934			-			25,866
	Loss on extinguishment			-			-			2,434			-			2,434
	of debt
	Loss on disposal of assets			-			-			106			-			106
	Loss from customer contract termination			-			1,626			-			-			1,626
	Other non-cash expense (income)(1)			1,592			413			(116	)		(6,555	)		(4,666	)
	EBITDA excluding non-cash items		$	40,005		$	16,210		$	109,169		$	3,157		$	168,541
		-1	Other non-cash expense (income) for MIC Solar represents the adjustment for noncontrolling interest.
			Nine Months Ended September 30, 2012
			Hawaii			District			Atlantic			Total Reportable
			Gas			Energy			Aviation			Segments
	Net income		$	14,338		$	3,098		$	20,426		$	37,862
	Interest expense, net			9,102			6,521			23,448			39,071
	Provision for income taxes			9,343			2,171			15,815			27,329
	Depreciation			5,191			5,036			17,513			27,740
	Amortization of intangibles			617			1,027			24,248			25,892
	Gain on disposal of assets			-			-			(1,803	)		(1,803	)
	Other non-cash expense (income)			2,671			425			(268	)		2,828
	EBITDA excluding non-cash items		$	41,262		$	18,278		$	99,379		$	158,919
Schedule of Capital Expenditures
			Quarter Ended						Nine Months Ended
			September 30,						September 30,
			2013			2012			2013			2012
	Hawaii Gas		$	5,357		$	3,816		$	15,402		$	11,371
	District Energy			26			645			559			1,092
	Atlantic Aviation			5,511			5,649			16,255			12,980
	MIC Solar			2,090			-			19,219			-
	Total		$	12,984		$	10,110		$	51,435		$	25,443
Schedule of Assets of Reportable Segments
			Property, Equipment, Land and Leasehold Improvements						Goodwill						Total Assets
			2013			2012			2013			2012			2013			2012
	Hawaii Gas		$	178,954		$	164,088		$	120,193		$	120,193		$	380,933		$	375,911
	District Energy			131,761			137,880			17,946			18,647			200,782			215,141
	Atlantic Aviation			259,010			257,128			375,800			375,800			1,315,977			1,356,770
	MIC Solar			207,342			-			-			-			229,639			-
	Total		$	777,067		$	559,096		$	513,939		$	514,640		$	2,127,331		$	1,947,822
Schedule of Reconciliation of Assets of Reportable Segments
			As of September 30,
			2013			2012
	Total assets of reportable segments		$	2,127,331		$	1,947,822
	Investment in IMTT			86,554			125,299
	Corporate and other			35,289			89,770
	Total consolidated assets		$	2,249,174		$	2,162,891
Reportable Segment [Member]
Schedule of EBITDA for Reportable Segments
			Quarter Ended						Nine Months Ended
			September 30,						September 30,
			2013			2012			2013			2012
	Total reportable segments EBITDA excluding		$	58,661		$	54,562		$	168,541		$	158,919
	non-cash items
	Interest income			39			110			182			116
	Interest expense			(15,767	)		(15,144	)		(31,190	)		(39,076	)
	Depreciation(1)			(11,659	)		(9,281	)		(33,751	)		(27,740	)
	Amortization of intangibles			(8,618	)		(8,800	)		(25,866	)		(25,892	)
	Loss on extinguishment of debt			-			-			(2,434	)		-
	Gain (loss) on disposal of assets			-			1,850			(106	)		1,803
	Loss from customer contract termination			-			-			(1,626	)		-
	Selling, general and administrative - corporate			(1,278	)		(2,005	)		(4,987	)		(9,221	)
	Fees to manager			(15,242	)		(29,353	)		(76,912	)		(39,108	)
	Equity in earnings and amortization charges of investee			8,576			6,989			30,327			23,295
	Other (expense) income, net			(634	)		(807	)		1,070			(2,281	)
	Total consolidated net income (loss) before income taxes		$	14,078		$	(1,879	)	$	23,248		$	40,815
		-1	Depreciation includes depreciation expense for District Energy, which is reported in cost of services in the consolidated condensed statement of operations.
International Matex Tank Terminals [Member]
Schedule of Segment Information
			As of, and for the Quarter						As of, and for the Nine Months
			Ended September 30,						Ended September 30,
			2013			2012			2013			2012
	Revenue		$	126,447		$	118,601		$	383,753		$	350,368
	Net income		$	19,559		$	16,384		$	67,873		$	53,809
	Interest expense, net			9,376			10,533			17,099			28,914
	Provision for income taxes			15,181			11,631			48,894			37,867
	Depreciation and amortization			19,051			16,992			56,109			51,016
	Casualty losses, net			200			-			6,700			-
	Other non-cash expense			253			369			429			647
	EBITDA excluding non-cash items(1)		$	63,620		$	55,909		$	197,104		$	172,253
	Capital expenditures paid		$	29,154		$	36,720		$	119,652		$	95,406
	Property, equipment, land and leasehold improvements, net			1,256,643			1,159,773			1,256,643			1,159,773
	Total assets balance			1,349,708			1,247,984			1,349,708			1,247,984
		-1	EBITDA consists of earnings before interest, taxes, depreciation and amortization. Non-cash items that are excluded consist of impairments, derivative gains and losses and all other non-cash income and expense items.

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2013
Related Party Transactions [Abstract]
Schedule of Dividends
	Declared		Period Covered		$ per LLC Interest		Record Date		Payable Date		Amount Paid to Manager (in thousands)
	25-Oct-13			Third quarter 2013	$	0.875		11-Nov-13		14-Nov-13	$	-1
	29-Jul-13			Second quarter 2013	$	0.875		12-Aug-13		15-Aug-13	$	2,744
	26-Apr-13			First quarter 2013	$	0.6875		13-May-13		16-May-13	$	1,872
	12-Dec-12			Fourth quarter 2012	$	0.6875		24-Dec-12		28-Dec-12	$	3,768
	29-Oct-12			Third quarter 2012	$	0.6875		12-Nov-12		15-Nov-12	$	3,290
	30-Jul-12			Second quarter 2012	$	0.625		13-Aug-12		16-Aug-12	$	2,920
	30-Apr-12			First quarter 2012	$	0.2		14-May-12		17-May-12	$	905
	1-Feb-12			Fourth quarter 2011	$	0.2		5-Mar-12		8-Mar-12	$	878
		-1	The amount of dividend payable to the Manager for the third quarter of 2013 will be determined on November 11, 2013, the record date.
Schedule of Base Management Fees and Performance Fees
	Period		Base Management		Performance		LLC Interests Issued		Issue Date
			Fee Amount		Fee Amount
			($ in thousands)		($ in thousands)
	2013 Activities:
	Third quarter 2013		$	8,336	$	6,906		-1		-1
	Second quarter 2013			8,053		24,440		603,936		4-Sep-13
	First quarter 2013			7,135		22,042		522,638		5-Jun-13
	2012 Activities:
	Fourth quarter 2012		$	6,299	$	43,820		980,384		20-Mar-13
	Third quarter 2012			5,844		23,509		695,068		5-Dec-12
	Second quarter 2012			4,760		-		113,847		30-Aug-12
	First quarter 2012			4,995		-		147,682		31-May-12
		-1	LLC interests for the third quarter of 2013 base management and performance fee will be issued to the Manager during the fourth quarter of 2013.

Organization_and_Description_o1

Organization and Description of Business (Details)	9 Months Ended
	Sep. 30, 2013	Oct. 08, 2013	Dec. 31, 2012
		MW	MW
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Percentage of interests in a bulk liquid storage terminal business	50.00%
Percentage of controlling interest in district energy business	50.01%
Number of Airport Locations	62
Number of solar projects		5	2
Capacity of Power generating units (MW)		57	30
United States- IMTT [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of marine terminals	10
Canada- IMTT [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of marine terminals	2

Income_per_Share_Schedule_of_R

Income per Share (Schedule of Reconciliation of Income per Share) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income per Share [Abstract]
Weighted average number of shares outstanding: basic	53,043,185	46,684,627	50,525,617	46,524,980
Dilutive effect of restricted stock unit grants	12,910		15,896	20,923
Weighted average number of shares outstanding: diluted	53,056,095	46,684,627	50,541,513	46,545,903

Income_per_Share_Narrative_Det

Income per Share (Narrative) (Details)	9 Months Ended		3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
	Restricted stock unit grants June 2, 2011 [Member]	Restricted stock unit grants August 12, 2011 [Member]	Restricted stock unit grants May 31, 2012 [Member]	Restricted stock unit grants May 31, 2012 [Member]	Restricted stock unit grants May 31, 2012 [Member]	Restricted stock unit grants February 21, 2013 [Member]	Restricted stock unit grants May 20, 2013 [Member]	Restricted stock unit grants May 20, 2013 [Member]
Class of Stock [Line Items]
Potentially dilutive shares	17,925	5,209		18,208	18,208	895	12,910	12,910
Antidilutive securities			18,208

Acquisitions_Narrative_Details

Acquisitions - (Narrative) (Details) (USD $)

9 Months Ended

1 Months Ended

1 Months Ended

3 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Oct. 08, 2013

Dec. 31, 2012

Jun. 30, 2013

Nov. 21, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Apr. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Dec. 21, 2012

Sep. 30, 2013

Jul. 19, 2013

Sep. 30, 2013

Sep. 20, 2013

Oct. 08, 2013

MW

MW

Solar Power Generation Businesses Tucson, Arizona [Member]

Solar Power Generation Businesses Tucson, Arizona [Member]

Solar Power Generation Businesses Tucson, Arizona [Member]

Solar Power Generation Businesses [Member]

Solar Power Generation Businesses [Member]

Solar Power Generation Businesses Presidio, Texas [Member]

Solar Power Generation Businesses Presidio, Texas [Member]

Solar Power Generation Businesses Presidio, Texas [Member]

Solar Power Generation Businesses Presidio, Texas [Member]

Davis Monthan Air Force Base [Member]

Davis Monthan Air Force Base [Member]

Valley Center [Member]

Valley Center [Member]

Additional Power Generation Facilities [Member]

MW

MW

MW

MW

MW

Business Acquisition [Line Items]

Utility-scale solar photovoltaic power generation facilities, electricity generating capacity

57

30

20

10

13

7

27

Number of solar projects

5

2

Number of solar projects under construction

3

Business acquisition, purchase price

$59,425

$5,392

$7,908

$6,758

Acquisitions of businesses and investments, net of cash acquired

14,666

4,000

Capital contribution by noncontrolling co-investor

22,362

1,700

55,400

18,600

2,000

Capital return from investment

3,400

Capital investment value

2,000

Total liabilities assumed

58,929

24,304

22,393

10,211

Construction loan

22,400

10,200

Transaction related costs

$2,100

$1,100

Percentage of loss allocated to co-investor

99.00%

Acquisitions_Schedule_of_Asset

Acquisitions (Schedule of Assets Acquired and Liabilities Assumed) (Details) (USD $)	Nov. 21, 2012	Dec. 21, 2012	Jul. 19, 2013	Sep. 20, 2013
In Thousands, unless otherwise specified	Solar Power Generation Businesses Tucson, Arizona [Member]	Solar Power Generation Businesses Presidio, Texas [Member]	Davis Monthan Air Force Base [Member]	Valley Center [Member]
Business Acquisition [Line Items]
Restricted cash - current	$538	$2,596	$2,708	$7,614
Other current assets				7
Total current assets	538	2,596	2,708	7,621
Property and equipment	115,597	25,837	27,593	8,846
Restricted cash - non-current	2,219	1,000
Deferred financing costs		263		502
Total assets acquired	118,354	29,696	30,301	16,969
Current liabilities			32	10,211
Current portion of long-term debt	1,842	497	321
Total current liabilities	1,842	497	353
Long-term debt	57,087	23,807	22,040
Total liabilities assumed	58,929	24,304	22,393	10,211
Net assets acquired	$59,425	$5,392	$7,908	$6,758

Property_Equipment_Land_and_Le2

Property, Equipment, Land and Leasehold Improvements (Schedule of Property and Equipment) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
In Thousands, unless otherwise specified
Property, Equipment, Land and Leasehold Improvements [Abstract]
Land	$4,618	$4,618
Easements	5,624	5,624
Buildings	25,133	24,993
Leasehold and land improvements	340,929	337,632
Machinery and equipment	562,617	503,499
Furniture and fixtures	10,760	10,215
Construction in progress	77,316	41,370
Property held for future use	1,975	1,768
Property, equipment, land and leasehold improvements, gross	1,028,972	929,719
Less: accumulated depreciation	-251,905	-221,688
Property, equipment, land and leasehold improvements, net	$777,067	$708,031	$559,096

Property_Equipment_Land_and_Le3

Property, Equipment, Land and Leasehold Improvements (Narrative) (Details) (Solar Power Generation Businesses [Member], USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Solar Power Generation Businesses [Member]
Property, Plant and Equipment [Line Items]
Property, equipment, land and leasehold improvements acquired	$36,400	$141,400

Intangible_Assets_Schedule_of_

Intangible Assets (Schedule of Intangible Assets) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Intangible Assets [Abstract]
Contractual arrangements	$745,841	$745,841
Non-compete agreements	9,575	9,575
Customer relationships	79,445	79,445
Leasehold rights	2,121	3,330
Trade names	15,671	15,671
Technology	460	460
Intangible assets, gross	853,113	854,322
Less: accumulated amortization	-252,768	-227,420
Intangible assets, net	$600,345	$626,902

Intangible_Assets_Schedule_of_1

Intangible Assets (Schedule of Goodwill) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
In Thousands, unless otherwise specified
Intangible Assets [Abstract]
Goodwill acquired in business combinations, net of disposals	$637,139
Less: accumulated impairment charges	-123,200
Balance at September 30, 2013	$513,939	$514,640	$514,640

LongTerm_Debt_Schedule_of_Long

Long-Term Debt (Schedule of Long-Term Debt) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
Current and long-term debt	$922,690	$1,159,164
Less: current portion	-168,005	-106,580
Long-term portion	754,685	1,052,584
Hawaii Gas [Member]
Debt Instrument [Line Items]
Current and long-term debt	180,000	180,000
District Energy [Member]
Debt Instrument [Line Items]
Current and long-term debt	157,987	164,382
Less: current portion	-158,000
Atlantic Aviation [Member]
Debt Instrument [Line Items]
Current and long-term debt	469,193	731,549
Solar Power Generation Businesses [Member]
Debt Instrument [Line Items]
Current and long-term debt	$115,510	$83,233

LongTerm_Debt_Narrative_Detail

Long-Term Debt (Narrative) (Details) (USD $)

3 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Oct. 08, 2013

Sep. 30, 2013

Jul. 19, 2013

Sep. 20, 2013

Oct. 28, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

31-May-13

31-May-13

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Davis Monthan Air Force Base [Member]

Davis Monthan Air Force Base [Member]

Valley Center [Member]

District Energy [Member]

District Energy [Member]

District Energy [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Solar Power Generation Businesses [Member]

Solar Power Generation Businesses [Member]

Solar Power Generation Businesses Tucson, Arizona [Member]

Solar Power Generation Businesses Presidio, Texas [Member]

Stand-alone debt facility [Member]

Secured Debt [Member]

Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Uncommitted incremental increase in facility

$50,000

Current borrowing capacity

70,000

Current portion of long-term debt

168,005

106,580

168,005

158,000

539

2,900

953

Payment of long-term debt

758,795

203,428

4,900

6,400

Maturity

1-Sep-14

Debt instrument, term

7 years

5 years

Facilities, long-term debt

922,690

1,159,164

922,690

157,987

164,382

469,193

731,549

5,400

465,000

115,510

83,233

58,200

24,700

Number of solar projects

2

5

Number of solar projects acquired

2

2

Fixed portion of interest rate component

2.50%

2.50%

Term loan Interest rate floor

0.75%

Fixed interest rate

4.70%

Fixed rate, term

6 years

Total liabilities assumed

22,393

10,211

Construction loan

22,400

10,200

Construction loan, current

$646

$317

Derivative_Instruments_and_Hed2

Derivative Instruments and Hedging Activities (Narrative) (Details) (USD $)	9 Months Ended					1 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Jul. 31, 2013	Dec. 31, 2012	31-May-13	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
			Atlantic Aviation [Member]	Atlantic Aviation [Member]	Atlantic Aviation [Member]	Atlantic Aviation [Member]	Atlantic Aviation [Member]	Atlantic Aviation [Member]	Interest Rate Contracts [Member]
						Secured Debt [Member]	Secured Debt [Member]	Secured Debt [Member]
								Maximum [Member]
Derivative [Line Items]
Debt economically hedged with interest rate swap									$693,800
Unhedged debt	228,900
Net derivative losses, included in accumulated other comprehensive loss, to be reclassified into earnings over the remaining life of existing interest rate swaps	-1,100
Current and long-term debt	922,690	1,159,164	469,193		731,549	465,000
Debt instrument, term						7 years
Fixed portion of interest rate component						2.50%
Term loan Interest rate floor						0.75%
Notional amount of derivative				$465,000				$550,000
Fixed interest rate						4.70%
Interest rate cap							2.25%

Derivative_Instruments_and_Hed3

Derivative Instruments and Hedging Activities (Schedule of Fair Value of Derivative Instruments) (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments - current liabilities	($13,336)		($7,450)
Fair value of derivative instruments - non-current liabilities			-5,360
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]
Derivatives, Fair Value [Line Items]
Total interest rate derivative contracts - assets	626	[1],[2],[3]	95	[1],[2],[3]
Total interest rate derivative contracts - liabilities	-13,336	[2],[3]	-12,810	[2],[3]
Not Designated as Hedging Instrument [Member] | Interest Rate Cap [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments - non-current assets	4	[1],[2]	95	[1],[2]
Not Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments - non-current assets	622	[2],[3]		[2],[3]
Fair value of derivative instruments - current liabilities	-13,336	[2],[3]	-7,450	[2],[3]
Fair value of derivative instruments - non-current liabilities		[2],[3]	($5,360)	[2],[3]
[1]	Derivative contracts represent interest rate caps.
[2]	Fair value measurements at reporting date were made using significant other observable inputs ("level 2").
[3]	Derivative contracts represent interest rate swaps.

Derivative_Instruments_and_Hed4

Derivative Instruments and Hedging Activities (Schedule of Location of Hedging Activities) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense, losses on derivative instruments	($8,000)		($9,400)		($9,600)		($20,300)
Net loss in accumulated other comprehensive income reclassifications for cash flow hedges	-344		-6,100		-1,200		-14,600
Not Designated as Hedging Instrument [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense, losses on derivative instruments	-8,036	[1]	-9,368	[2]	-9,583	[1]	-20,252	[2]
Not Designated as Hedging Instrument [Member] | Interest Expense [Member] | Interest Rate Cap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense, losses on derivative instruments	-38	[1]	-164	[2]	-91	[1]	-164	[2]
Not Designated as Hedging Instrument [Member] | Interest Expense [Member] | Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives Not Designated as Hedging Instruments -Amount of Gain/(Loss) Recognized in Interest Expense	-7,600		-3,100		-8,300		-5,500
Interest expense, losses on derivative instruments	-7,998	[1]	-9,204	[2]	-9,492	[1]	-20,088	[2]
Net loss in accumulated other comprehensive income reclassifications for cash flow hedges	($344)		($6,100)		($1,200)		($14,600)
[1]	Net loss recognized in interest expense for the interest rate swap contracts for the quarter and nine months ended September 30, 2013 includes $7.6 million and $8.3 million, respectively, of unrealized derivative losses and $344,000 and $1.2 million, respectively, of derivative losses reclassified from accumulated other comprehensive loss. Net loss recognized in interest expense for the quarter and nine months ended September 30, 2013 also includes $38,000 and $91,000, respectively, of unrealized derivative losses from an interest rate cap contract.
[2]	Net loss recognized in interest expense for the interest rate swap contracts for the quarter and nine months ended September 30, 2012 includes $6.1 million and $14.6 million, respectively, of derivative losses reclassified from accumulated other comprehensive loss, and $3.1 million and $5.5 million, respectively, of unrealized derivative losses. Net loss recognized in interest expense for the quarter and nine months ended September 30, 2012 also includes $164,000 of unrealized derivative losses from an interest rate cap contract.

Members_Equity_Narrative_Detai

Members' Equity (Narrative) (Details) (USD $)	Sep. 30, 2013	Apr. 08, 2013	Dec. 31, 2012	16-May-13	8-May-13	16-May-13
In Thousands, except Share data, unless otherwise specified				Company [Member]	Company [Member]	Manager [Member]
Members' Equity [Abstract]
LLC interests, authorized	500,000,000		500,000,000
LLC interest , authorized under Dividend Reinvestment Plan		1,000,000
Number of votes for each outstanding LLC interest of the Company	1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity offering, shares				133,375	3,756,500	3,182,625
Proceeds from equity offering					$217,800	$178,200

Members_Equity_Schedule_of_Acc

Members' Equity (Schedule of Accumulated Other Comprehensive Loss) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance					($20,801)
Reclassification of realized losses of derivatives	-217	[1]	-3,070	[1]	-733	[1]	-8,252	[1]
Translation adjustment		[2]		[2]		[2]	104	[2]
Ending Balance	-20,419				-20,419
Net loss in accumulated other comprehensive income reclassifications for cash flow hedges	-344		-6,100		-1,200		-14,600
Reclassification of realized losses of derivatives into earnings, taxes	137		3,100		463		6,500
Loss in accumulated other comprehensive income reclassifications for cash flow hedges from unconsolidated business	-15		-87		-47		-261
Reclassification of realized losses of derivatives into earnings from unconsolidated business, taxes	5		30		16		91
Translation adjustment, taxes							56
Cash Flow Hedges, net of taxes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance					-1,538	[1]	-10,337	[1]
Reclassification of realized losses of derivatives					733	[1]	8,252	[1]
Translation adjustment								[1]
Ending Balance	-805	[1]	-2,085	[1]	-805	[1]	-2,085	[1]
Post-Retirement Benefit Plans, net of taxes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance					-20,466		-18,911
Reclassification of realized losses of derivatives
Translation adjustment
Ending Balance	-20,466		-18,911		-20,466		-18,911
Translation Adjustment, net of taxes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance					514	[2]	410	[2]
Reclassification of realized losses of derivatives						[2]		[2]
Translation adjustment							104	[2]
Ending Balance	514	[2]	514	[2]	514	[2]	514	[2]
Total Accumulated Other Comprehensive Loss, net of taxes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance					-21,490		-28,838
Reclassification of realized losses of derivatives					733		8,252
Translation adjustment							104
Ending Balance	-20,757		-20,482		-20,757		-20,482
Noncontrolling Interests [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance					689		1,426
Reclassification of realized losses of derivatives					-351		-598
Translation adjustment
Ending Balance	338		828		338		828
Total Members Accumulated Other Comprehensive Loss Net Of Taxes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance					-20,801		-27,412
Reclassification of realized losses of derivatives					382		7,654
Translation adjustment							104
Ending Balance	($20,419)		($19,654)		($20,419)		($19,654)
[1]	Reclassification of realized losses of derivatives is composed of (i) pre-tax derivative losses into interest expense of $344,000 and $1.2 million, respectively, and the related tax benefit of $137,000 and $463,000, respectively, in the consolidated condensed statements of operations; and (ii) pre-tax derivative losses as an adjustment to investment in unconsolidated business of $15,000 and $47,000, respectively, and an adjustment to deferred taxes of $5,000 and $16,000, respectively, in the consolidated condensed balance sheet for the quarter and nine months ended September 30, 2013, respectively. For the quarter and nine months ended September 30, 2012, reclassification of realized losses of derivatives is composed of (i) pre-tax derivative losses into interest expense of $6.1 million and $14.6 million, respectively, and the related tax benefit of $3.1 million and $6.5 million, respectively, in the consolidated condensed statements of operations; and (ii) pre-tax derivative losses as an adjustment to investment in unconsolidated business of $87,000 and $261,000, respectively, and an adjustment to deferred taxes of $30,000 and $91,000, respectively, in the consolidated condensed balance sheet.
[2]	Translation adjustment is presented net of taxes of $56,000 for the nine months ended September 30, 2012.

Reportable_Segments_Narrative_

Reportable Segments (Narrative) (Details)	9 Months Ended
	Sep. 30, 2013	Oct. 08, 2013	Dec. 31, 2012
		MW	MW
Segment Reporting Information [Line Items]
Number of reportable segments	4
Number of facilities invested in	4
Percentage of interests in a bulk liquid storage terminal business	50.00%
Number of Airport Locations	62
Number of solar projects		5	2
Capacity of Power generating units (MW)		57	30
Minimum [Member]
Segment Reporting Information [Line Items]
Investment project life	20 years
Maximum [Member]
Segment Reporting Information [Line Items]
Investment project life	25 years
United States- IMTT [Member]
Segment Reporting Information [Line Items]
Number of marine terminals	10

Reportable_Segments_Schedule_o

Reportable Segments (Schedule of Segment Information) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$263,719		$259,253		$780,492		$782,625
Net income	10,407		-1,879		15,430		23,351
Provision for income taxes	5,829	[1]	-1,758	[1]	9,241	[1]	14,698	[1]
Other non-cash expenses					743		-2,340
Capital expenditures paid					51,435		25,443
Property, equipment, land and leasehold improvements, net	777,067		559,096		777,067		559,096		708,031
Total assets balance	2,249,174		2,162,891		2,249,174		2,162,891		2,223,694
International Matex Tank Terminals [Member]
Segment Reporting Information [Line Items]
Revenue	126,447		118,601		383,753		350,368
Net income	19,559		16,384		67,873		53,809
Interest expense, net	9,376		10,533		17,099		28,914
Provision for income taxes	15,181		11,631		48,894		37,867
Depreciation and amortization	19,051		16,992		56,109		51,016
Casualty losses, net	-200				-6,700
Other non-cash expenses	253		369		429		647
EBITDA excluding non-cash items	63,620	[2]	55,909	[2]	197,104	[2]	172,253	[2]
Capital expenditures paid	29,154		36,720		119,652		95,406
Property, equipment, land and leasehold improvements, net	1,256,643		1,159,773		1,256,643		1,159,773
Total assets balance	$1,349,708		$1,247,984		$1,349,708		$1,247,984
[1]	Includes $137,000 and $463,000 of benefit for income taxes from accumulated other comprehensive income reclassifications for the quarter and nine months ended September 30, 2013, respectively. The quarter and nine months ended September 30, 2012, includes benefit for income taxes of $3.1 million and $6.5 million from accumulated other comprehensive income reclassifications, respectively.
[2]	EBITDA consists of earnings before interest, taxes, depreciation and amortization. Non-cash items that are excluded consist of impairments, derivative gains and losses and all other non-cash income and expense items.

Reportable_Segments_Schedule_o1

Reportable Segments (Schedule of Revenue From External Customers) (Details) (USD $)	3 Months Ended		5 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	31-May-12	Sep. 30, 2013	Sep. 30, 2012
Revenue from Product Sales
Product Sales	$172,169	$166,385		$513,465	$508,468
Product sales - utility	32,981	35,535		104,095	110,656
Total Revenue from Product Sales	205,150	201,920		617,560	619,124
Service Revenue
Other services	42,858	40,111		126,674	122,525
Cooling capacity revenue	5,780	5,613		17,197	16,675
Cooling consumption revenue	9,114	10,490		16,282	20,853
Service revenue	57,752	56,214		160,153	160,053
Financing and Lease Income
Financing and equipment lease	817	1,119		2,779	3,448
Financing and equipment lease income	817	1,119		2,779	3,448
Total Revenue	263,719	259,253		780,492	782,625
Hawaii Gas [Member]
Revenue from Product Sales
Product Sales	28,488	26,894		88,993	88,271
Product sales - utility	32,981	35,535		104,095	110,656
Total Revenue from Product Sales	61,469	62,429		193,088	198,927
Service Revenue
Other services
Cooling capacity revenue
Cooling consumption revenue
Service revenue
Financing and Lease Income
Financing and equipment lease
Financing and equipment lease income
Total Revenue	61,469	62,429		193,088	198,927
District Energy [Member]
Revenue from Product Sales
Product Sales
Product sales - utility
Total Revenue from Product Sales
Service Revenue
Other services	692	702		2,139	2,023
Cooling capacity revenue	5,780	5,613		17,197	16,675
Cooling consumption revenue	9,114	10,490		16,282	20,853
Service revenue	15,586	16,805		35,618	39,551
Financing and Lease Income
Financing and equipment lease	817	1,119		2,779	3,448
Financing and equipment lease income	817	1,119		2,779	3,448
Total Revenue	16,403	17,924		38,397	42,999
Atlantic Aviation [Member]
Revenue from Product Sales
Product Sales	141,032	139,491		417,305	420,197
Product sales - utility
Total Revenue from Product Sales	141,032	139,491		417,305	420,197
Service Revenue
Other services	42,166	39,409		124,535	120,502
Cooling capacity revenue
Cooling consumption revenue
Service revenue	42,166	39,409		124,535	120,502
Financing and Lease Income
Financing and equipment lease
Financing and equipment lease income
Total Revenue	183,198	178,900	9,300	541,840	540,699
Solar Power Generation Businesses [Member]
Revenue from Product Sales
Product Sales	2,649			7,167
Product sales - utility
Total Revenue from Product Sales	2,649			7,167
Service Revenue
Other services
Cooling capacity revenue
Cooling consumption revenue
Service revenue
Financing and Lease Income
Financing and equipment lease
Financing and equipment lease income
Total Revenue	$2,649			$7,167

Reportable_Segments_Schedule_o2

Reportable Segments (Schedule of EBITDA for Reportable Segments) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting Information [Line Items]
Net income (loss)	$10,407		($1,879)		$15,430		$23,351
Provision (benefit) for income taxes	5,829	[1]	-1,758	[1]	9,241	[1]	14,698	[1]
Depreciation					33,751		27,740
Amortization of intangibles	8,618		8,800		25,866		25,892
Loss on extinguishment of debt					2,434
Loss (gain) on disposal of assets					106		-1,803
Loss from customer contract termination					1,626
Other non-cash expense (income)					743		-2,340
Hawaii Gas [Member]
Segment Reporting Information [Line Items]
Net income (loss)	4,827		2,472		16,196		14,338
Interest expense, net	2,097		5,695		5,040		9,102
Provision (benefit) for income taxes	3,191		1,631		10,669		9,343
Depreciation	1,849		1,759		5,573		5,191
Amortization of intangibles	311		206		935		617
Loss on extinguishment of debt
Loss (gain) on disposal of assets
Loss from customer contract termination
Other non-cash expense (income)	604	[2]	869		1,592	[2]	2,671
EBITDA excluding non-cash items	12,879		12,632		40,005		41,262
District Energy [Member]
Segment Reporting Information [Line Items]
Net income (loss)	2,258		2,226		2,563		3,098
Interest expense, net	1,275		2,065		3,793		6,521
Provision (benefit) for income taxes	1,584		1,560		1,797		2,171
Depreciation	1,620		1,685		5,021		5,036
Amortization of intangibles	329		345		997		1,027
Loss on extinguishment of debt
Loss (gain) on disposal of assets
Loss from customer contract termination					1,626
Other non-cash expense (income)	205	[2]	156		413	[2]	425
EBITDA excluding non-cash items	7,271		8,037		16,210		18,278
Atlantic Aviation [Member]
Segment Reporting Information [Line Items]
Net income (loss)	7,569		7,784		26,613		20,426
Interest expense, net	11,481		7,381		20,206		23,448
Provision (benefit) for income taxes	5,185		6,531		18,009		15,815
Depreciation	6,094		5,837		17,983		17,513
Amortization of intangibles	7,978		8,249		23,934		24,248
Loss on extinguishment of debt					2,434
Loss (gain) on disposal of assets			-1,850		106		-1,803
Loss from customer contract termination
Other non-cash expense (income)	-1	[2]	-39		-116	[2]	-268
EBITDA excluding non-cash items	38,306		33,893		109,169		99,379
Total reportable segments [Member]
Segment Reporting Information [Line Items]
Net income (loss)	15,903		12,482		46,614		37,862
Interest expense, net	15,750		15,141		31,160		39,071
Provision (benefit) for income taxes	9,933		9,722		31,650		27,329
Depreciation	11,659		9,281		33,751		27,740
Amortization of intangibles	8,618		8,800		25,866		25,892
Loss on extinguishment of debt					2,434
Loss (gain) on disposal of assets			-1,850		106		-1,803
Loss from customer contract termination					1,626
Other non-cash expense (income)	-3,202	[2]	986		-4,666	[2]	2,828
EBITDA excluding non-cash items	58,661		54,562		168,541		158,919
Solar Power Generation Businesses [Member]
Segment Reporting Information [Line Items]
Net income (loss)	1,249				1,242
Interest expense, net	897				2,121
Provision (benefit) for income taxes	-27				1,175
Depreciation	2,096				5,174
Amortization of intangibles
Loss on extinguishment of debt
Loss (gain) on disposal of assets
Loss from customer contract termination
Other non-cash expense (income)	-4,010	[2]			-6,555	[2]
EBITDA excluding non-cash items	$205				$3,157
[1]	Includes $137,000 and $463,000 of benefit for income taxes from accumulated other comprehensive income reclassifications for the quarter and nine months ended September 30, 2013, respectively. The quarter and nine months ended September 30, 2012, includes benefit for income taxes of $3.1 million and $6.5 million from accumulated other comprehensive income reclassifications, respectively.
[2]	Other non-cash expense (income) for MIC Solar represents the adjustment for noncontrolling interest.

Reportable_Segments_Schedule_o3

Reportable Segments (Schedule of Reconciliation of EBITDA for Reportable Segments) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest income	$39		$110		$182		$116
Interest expense	-15,767	[1]	-15,144	[1]	-31,190	[1]	-39,076	[1]
Depreciation					-33,751		-27,740
Amortization of intangibles	-8,618		-8,800		-25,866		-25,892
Loss on extinguishment of debt					-2,434
Gain (loss) on disposal of assets					-106		1,803
Loss from customer contract termination					-1,626
Selling, general and administrative - corporate	-243,318		-253,336		-754,605		-726,390
Fees to manager	-15,242		-29,353		-76,912		-39,108
Equity in earnings and amortization charges of investee	8,576		6,989		30,327		23,295
Total consolidated net income (loss) before income taxes	14,078		-1,879		23,248		40,815
Total reportable segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total reportable segments EBITDA excluding non-cash items	58,661		54,562		168,541		158,919
Interest income	39		110		182		116
Interest expense	-15,767		-15,144		-31,190		-39,076
Depreciation	-11,659	[2]	-9,281	[2]	-33,751	[2]	-27,740	[2]
Amortization of intangibles	-8,618		-8,800		-25,866		-25,892
Loss on extinguishment of debt					-2,434
Gain (loss) on disposal of assets			1,850		-106		1,803
Loss from customer contract termination					-1,626
Selling, general and administrative - corporate	-1,278		-2,005		-4,987		-9,221
Fees to manager	-15,242		-29,353		-76,912		-39,108
Equity in earnings and amortization charges of investee	8,576		6,989		30,327		23,295
Other (expense) income, net	-634		-807		1,070		-2,281
Total consolidated net income (loss) before income taxes	$14,078		($1,879)		$23,248		$40,815
[1]	Interest expense includes losses on derivative instruments of $8.0 million and $9.6 million for the quarter and nine months ended September 30, 2013, respectively, of which net losses of $344,000 and $1.2 million, respectively, was reclassified from accumulated other comprehensive income. For the quarter and nine months ended September 30, 2012, interest expense includes losses on derivative instruments of $9.4 million and $20.3 million, respectively, of which net losses of $6.1 million and $14.6 million, respectively, was reclassified from accumulated other comprehensive income.
[2]	Depreciation includes depreciation expense for District Energy, which is reported in cost of services in the consolidated condensed statement of operations.

Reportable_Segments_Schedule_o4

Reportable Segments (Schedule of Capital Expenditures) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Capital expenditures			$51,435	$25,443
Hawaii Gas [Member]
Segment Reporting Information [Line Items]
Capital expenditures	5,357	3,816	15,402	11,371
District Energy [Member]
Segment Reporting Information [Line Items]
Capital expenditures	26	645	559	1,092
Atlantic Aviation [Member]
Segment Reporting Information [Line Items]
Capital expenditures	5,511	5,649	16,255	12,980
Total reportable segments [Member]
Segment Reporting Information [Line Items]
Capital expenditures	12,984	10,110	51,435	25,443
Solar Power Generation Businesses [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$2,090		$19,219

Reportable_Segments_Schedule_o5

Reportable Segments (Schedule of Assets of Reportable Segments) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
In Thousands, unless otherwise specified
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements	$777,067	$708,031	$559,096
Goodwill	513,939	514,640	514,640
Total Assets	2,127,331		1,947,822
Hawaii Gas [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements	178,954		164,088
Goodwill	120,193		120,193
Total Assets	380,933		375,911
District Energy [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements	131,761		137,880
Goodwill	17,946		18,647
Total Assets	200,782		215,141
Atlantic Aviation [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements	259,010		257,128
Goodwill	375,800		375,800
Total Assets	1,315,977		1,356,770
Solar Power Generation Businesses [Member]
Segment Reporting Information [Line Items]
Property, Equipment, Land and Leasehold Improvements	207,342
Goodwill
Total Assets	$229,639

Reportable_Segments_Schedule_o6

Reportable Segments (Schedule of Reconciliation of Assets of Reportable Segments) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
In Thousands, unless otherwise specified
Reportable Segments [Abstract]
Investment in IMTT	$86,554	$75,205	$125,299
Corporate and other	35,289		89,770
Total assets	2,249,174	2,223,694	2,162,891
Segment Reporting Information [Line Items]
Total assets of reportable segments	2,127,331		1,947,822
Solar Power Generation Businesses [Member]
Segment Reporting Information [Line Items]
Total assets of reportable segments	$229,639

Related_Party_Transactions_Nar

Related Party Transactions (Narrative) (Details) (USD $)

3 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

5 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

In Thousands, except Share data, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

31-May-13

16-May-13

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

31-May-12

Sep. 30, 2013

Sep. 30, 2012

Jul. 31, 2013

Dec. 31, 2012

31-May-13

31-May-13

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Aug. 08, 2012

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2012

Aug. 08, 2012

Sep. 30, 2012

Aug. 07, 2012

Aug. 07, 2012

Secured Debt [Member]

Manager [Member]

MENAT [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Atlantic Aviation [Member]

Macquarie Infrastructure Management (USA) Inc. [Member]

Macquarie Infrastructure Management (USA) Inc. [Member]

Macquarie Infrastructure Management (USA) Inc. [Member]

Macquarie Infrastructure Management (USA) Inc. [Member]

Macquarie Infrastructure Management (USA) Inc. [Member]

Macquarie Infrastructure Management (USA) Inc. [Member]

Macquarie Infrastructure Management (USA) Inc. [Member]

Macquarie Infrastructure Management (USA) Inc. [Member]

Macquarie Infrastructure Management (USA) Inc. [Member]

Hawaii Gas Business [Member]

Hawaii Gas Business [Member]

Hawaii Gas Business [Member]

Hawaii Gas Business [Member]

Hawaii Gas Business [Member]

Hawaii Gas Business [Member]

Hawaii Gas Business [Member]

Hawaii Gas Business [Member]

Macquarie Bank Limited [Member]

bbl

Secured Debt [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Interest Rate Swaps [Member]

Interest Rate Swaps [Member]

Interest Rate Swaps [Member]

Not Designated as Hedging Instrument [Member]

Related Party Transaction [Line Items]

LLC Interests of the Company held by Manager, a related party

3,738,873

5,480,929

3,738,873

Equity offering, shares

3,182,625

Proceeds from equity offering

$178,200

Number of employees

2

2

Base management fees settled in LLC interests

8,336

8,053

7,135

6,299

5,844

4,760

4,995

23,500

15,600

Performance fee settled in LLC interests

6,906

24,440

22,042

43,820

23,509

53,400

23,509

Reimbursement of out-of-pocket expenses

12

137

145

426

345

7

Advisory fees

2,400

4,000

132

100

Term loans hedged amount

160,000

Notional amount hedged with related party

465,000

48,000

Payments to MBL in relation to swaps

2,600

1,000

Interest rate swaps paid off

8,700

Lease expense on copiers

6

6

17

17

Prepaid monthly payment

9,473

9,473

8,908

2

2

2

2

Tank capacity

147,000

Revenue from related party

263,719

259,253

780,492

782,625

151

183,198

178,900

9,300

541,840

540,699

Receivable from related party

65,115

65,115

56,553

122

Debt instrument, term

7 years

5 years

Current and long-term debt

922,690

922,690

1,159,164

15,700

469,193

469,193

731,549

465,000

Current borrowing capacity

70,000

Commitment fee

$18

$27

Related_Party_Transactions_Sch

Related Party Transactions (Schedule of Dividends) (Details) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013
Dividend One [Member]
Dividends Payable [Line Items]
Declared	1-Feb-12
Period Covered	Fourth quarter 2011
$ per LLC Interest	$0.20
Record Date	5-Mar-12
Payable Date	8-Mar-12
Amount Paid to Manager	$878
Dividend Two [Member]
Dividends Payable [Line Items]
Declared	30-Apr-13
Period Covered	First quarter 2012
$ per LLC Interest	$0.20
Record Date	14-May-12
Payable Date	17-May-12
Amount Paid to Manager	905
Dividend Three [Member]
Dividends Payable [Line Items]
Declared	30-Jul-12
Period Covered	Second quarter 2012
$ per LLC Interest	$0.63
Record Date	13-Aug-12
Payable Date	16-Aug-12
Amount Paid to Manager	2,920
Dividend Four [Member]
Dividends Payable [Line Items]
Declared	29-Oct-12
Period Covered	Third quarter 2012
$ per LLC Interest	$0.69
Record Date	12-Nov-12
Payable Date	15-Nov-12
Amount Paid to Manager	3,290
Dividend Five [Member]
Dividends Payable [Line Items]
Declared	12-Dec-12
Period Covered	Fourth quarter 2012
$ per LLC Interest	$0.69
Record Date	24-Dec-12
Payable Date	28-Dec-12
Amount Paid to Manager	3,768
Dividend Six [Member]
Dividends Payable [Line Items]
Declared	26-Apr-13
Period Covered	First quarter 2013
$ per LLC Interest	$0.69
Record Date	13-May-13
Payable Date	16-May-13
Amount Paid to Manager	1,872
Dividend Seven [Member]
Dividends Payable [Line Items]
Declared	29-Jul-13
Period Covered	Second quarter 2013
$ per LLC Interest	$0.88
Record Date	12-Aug-13
Payable Date	15-Aug-13
Amount Paid to Manager	2,744
Dividend Eight [Member]
Dividends Payable [Line Items]
Declared	25-Oct-13
Period Covered	Third quarter 2013
$ per LLC Interest	$0.88
Record Date	11-Nov-13
Payable Date	14-Nov-13
Amount Paid to Manager		[1]
[1]	The amount of dividend payable to the Manager for the third quarter of 2013 will be determined on November 11, 2013, the record date.

Related_Party_Transactions_Sch1

Related Party Transactions (Schedule of Base Management Fees and Performance Fees) (Details) (Macquarie Infrastructure Management (USA) Inc. [Member], USD $)	3 Months Ended								9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013		Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2013	Sep. 30, 2012
Macquarie Infrastructure Management (USA) Inc. [Member]
Common Stock Equity [Line Items]
Base management fees to be settled/settled in LLC interests	$8,336		$8,053	$7,135	$6,299	$5,844	$4,760	$4,995	$23,500	$15,600
Performance fee to be settled/settled in LLC interests	$6,906		$24,440	$22,042	$43,820	$23,509			$53,400	$23,509
LLC Interests Issued		[1]	603,936	522,638	980,384	695,068	113,847	147,682
Issue Date			4-Sep-13	5-Jun-13	20-Mar-13	5-Dec-12	30-Aug-12	31-May-12
[1]	LLC interests for the third quarter of 2013 base management and performance fee will be issued to the Manager during the fourth quarter of 2013.

Income_Taxes_Details

Income Taxes (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Number of company businesses owned in less than 80%	2
Percentage of ownership in IMTT	50.00%
Percentage of ownership in District Energy	50.01%
Net operating loss carry-forwards	$7,800
Net operating loss carry-forwards valuation allowance	2,600
Unrecognized tax benefits resulting from current and prior period tax positions		472
Unrecognized tax benefits used to settle audit	$362
International Matex Tank Terminals [Member] | Maximum [Member]
Income Taxes [Line Items]
Percentage of ownership in IMTT	80.00%
District Energy [Member] | Maximum [Member]
Income Taxes [Line Items]
Percentage of ownership in District Energy	80.00%

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	Oct. 08, 2013	Dec. 31, 2012	Oct. 25, 2013	Oct. 08, 2013	Oct. 24, 2013
In Thousands, except Per Share data, unless otherwise specified	MW	MW	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]
				Ramona [Member]	International Matex Tank Terminals [Member]
				MW
Subsequent Event [Line Items]
Cash dividend declared, date declared			25-Oct-13		24-Oct-13
Cash dividend declared per LLC interest			$0.88
Cash dividend declared, date to be paid			14-Nov-13		30-Oct-13
Cash dividend declared, date of record			11-Nov-13
Total distribution amount declared to all shareholders from equity method investment					$40,900
Total distribution amount declared to each investor from equity method investment					20,500
Business acquisition, purchase price				6,100
Capacity of Power generating units (MW)	57	30		7
Construction loan				$10,400