Schedule I Condensed Parent Company Financial Statements - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income (loss)	$ (56,700)	$ (59,763)	$ (108,324)	$ (58,993)	$ 24,000	$ 60,265	$ (75,192)	$ (78,909)	$ (283,780)	$ (69,836)	$ 279,370
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Equity-based compensation									40,084	75,057	79,541
Other									13,355	7,875	(3,875)
Changes in assets and liabilities:
(Increase) decrease in prepaid expenses and other									17,557	512	1,732
Net cash provided by (used in) operating activities									52,077	440,779	443,586
Investing activities
Net cash used in investing activities									(537,763)	(796,433)	(368,603)
Financing activities
Net proceeds from issuance of senior secured notes										206,774	294,000
Purchase of treasury stock									(1,981)	(18,110)	(11,096)
Deferred financing costs										(9,030)	(22,088)
Net cash provided by (used in) financing activities									448,019	79,634	(139,184)
Cash and cash equivalents at beginning of period				275,004				554,831	275,004	554,831
Cash and cash equivalents at end of period	194,057				275,004				194,057	275,004	554,831
Parent company
Operating activities
Net income (loss)									(283,780)	(69,836)	279,370
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Equity in (earnings) losses of subsidiaries									220,031	7,464	(311,157)
Equity-based compensation									40,423	75,267	79,741
Amortization									3,070	3,190	3,188
Other									3,530	2,704	269
Changes in assets and liabilities:
(Increase) decrease in prepaid expenses and other									52	(34)	89
(Increase) decrease due to/from related party									(15,201)	1,224	(3,915)
Increase in accounts payable and accrued liabilities									312	2,721	10,593
Net cash provided by (used in) operating activities									(31,563)	22,700	58,178
Investing activities
Investment in subsidiaries									(40,047)	(293,545)	(208,879)
Net cash used in investing activities									(40,047)	(293,545)	(208,879)
Financing activities
Net proceeds from issuance of senior secured notes										206,774	294,000
Purchase of treasury stock									(1,981)	(18,110)	(11,096)
Deferred financing costs										(9,030)	(1,401)
Net cash provided by (used in) financing activities									(1,981)	179,634	281,503
Net increase (decrease) in cash and cash equivalents									(73,591)	(91,211)	130,802
Cash and cash equivalents at beginning of period				$ 74,683				$ 165,894	74,683	165,894	35,092
Cash and cash equivalents at end of period	$ 1,092				$ 74,683				$ 1,092	$ 74,683	$ 165,894