Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents (Note 6)	$ 91,057	$ 83,932
Restricted cash, current	7,150	11,793
Funds deposited by counterparty	33,530	43,635
Trade receivables (Note 6)	48,960	37,510
Derivative assets, current	18,824	17,578
Prepaid expenses (Note 6)	18,405	13,803
Deferred financing costs, current, net of accumulated amortization of $11,360 and $9,350 as of September 30, 2017 and December 31, 2016, respectively	2,514	2,456
Other current assets (Note 6)	19,058	7,350
Total current assets	239,498	218,057
Restricted cash, noncurrent	19,866	13,646
Property, plant and equipment, net (Note 6)	4,023,355	3,135,162
Unconsolidated investments	303,833	233,294
Derivative assets	14,865	26,712
Deferred financing costs	4,339	4,052
Net deferred tax assets	6,107	5,559
Finite-lived intangible assets, net (Note 6)	138,516	91,895
Other assets (Note 6)	22,649	24,390
Total assets	4,773,028	3,752,767
Current liabilities:
Accounts payable and other accrued liabilities (Note 6)	53,200	31,305
Accrued construction costs (Note 6)	2,765	1,098
Counterparty deposit liability	33,530	43,635
Accrued interest (Note 6)	7,043	9,545
Dividends payable	37,645	35,960
Derivative liabilities, current	12,095	11,918
Revolving credit facility	253,000	180,000
Current portion of long-term debt, net	58,213	48,716
Other current liabilities (Note 6)	13,133	4,698
Total current liabilities	470,624	366,875
Long-term debt, net	1,871,607	1,334,956
Derivative liabilities	21,979	24,521
Net deferred tax liabilities	50,573	31,759
Finite-lived intangible liability, net	52,062	54,663
Contingent liabilities	58,820	576
Other long-term liabilities (Note 6)	98,519	60,673
Total liabilities	2,624,184	1,874,023
Commitments and contingencies (Note 15)
Equity:
Class A common stock, $0.01 par value per share: 500,000,000 shares authorized; 88,569,377 and 87,410,687 shares outstanding as of September 30, 2017 and December 31, 2016, respectively	886	875
Additional paid-in capital	1,062,252	1,145,760
Accumulated loss	(104,225)	(94,270)
Accumulated other comprehensive loss	(24,821)	(62,367)
Treasury stock, at cost; 115,146 and 110,964 shares of Class A common stock as of September 30, 2017 and December 31, 2016, respectively	(2,597)	(2,500)
Total equity before noncontrolling interest	931,495	987,498
Noncontrolling interest	1,217,349	891,246
Total equity	2,148,844	1,878,744
Total liabilities and equity	$ 4,773,028	$ 3,752,767