Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents (Note 6)	$ 162,600	$ 83,932
Restricted Cash, Current	13,137	11,793
Funds deposited by counterparty	34,436	43,635
Trade receivables (Note 6)	48,331	37,510
Derivative assets, current	18,680	17,578
Prepaid expenses (Note 6)	11,787	13,803
Deferred financing costs, current, net of accumulated amortization of $10,606 and $9,350 as of June 30, 2017 and December 31, 2016, respectively	2,461	2,456
Other current assets (Note 6)	12,658	7,350
Total current assets	304,090	218,057
Restricted Cash, Noncurrent	17,410	13,646
Property, plant and equipment, net	3,682,269	3,135,162
Unconsolidated investments	240,561	233,294
Derivative assets	16,058	26,712
Deferred financing costs	4,023	4,052
Net deferred tax assets	4,387	5,559
Finite-lived intangible assets, net	110,617	91,895
Other assets (Note 6)	24,864	24,390
Total assets	4,404,279	3,752,767
Current liabilities:
Accounts payable and other accrued liabilities (Note 6)	64,974	31,305
Accrued construction costs (Note 6)	4,146	1,098
Counterparty deposit liability	34,436	43,635
Accrued interest (Note 6)	18,222	9,545
Dividends payable	36,991	35,960
Derivative liabilities, current	11,340	11,918
Revolving credit facility	60,000	180,000
Current portion of long-term debt, net	54,975	48,716
Other current liabilities (Note 6)	9,121	4,698
Total current liabilities	294,205	366,875
Long-term debt, net	1,711,670	1,334,956
Derivative liabilities	24,171	24,521
Net deferred tax liabilities	43,559	31,759
Finite-lived intangible liability, net	52,929	54,663
Contingent liabilities	58,346	576
Other long-term liabilities (Note 6)	91,685	60,673
Total liabilities	2,276,565	1,874,023
Commitments and contingencies (Note 15)
Equity:
Class A common stock, $0.01 par value per share: 500,000,000 shares authorized; 87,637,816 and 87,410,687 shares outstanding as of June 30, 2017 and December 31, 2016, respectively	878	875
Additional paid-in capital	1,075,448	1,145,760
Accumulated loss	(74,397)	(94,270)
Accumulated other comprehensive loss	(47,048)	(62,367)
Treasury stock, at cost; 115,146 and 110,964 shares of Class A common stock as of June 30, 2017 and December 31, 2016, respectively	(2,597)	(2,500)
Total equity before noncontrolling interest	952,284	987,498
Noncontrolling interest	1,175,430	891,246
Total equity	2,127,714	1,878,744
Total liabilities and equity	$ 4,404,279	$ 3,752,767