Income Taxes - Schedule of Income Tax Benefit at Company's Effective Tax Rate Reconciliation (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
Income Tax Disclosure [Abstract]
Loss before income taxes	$ 26,840	$ (158,183)	$ (379,584)	$ (278,891)	$ (208,191)	$ (131,558)	$ (14,999)	$ (49,678)	$ (789,818)	$ (404,426)	$ (119,340)
Tax provision at statutory tax rate of 35%									(276,436)	(141,549)	(41,769)
Effect of:
Valuation allowance									34,000	0	0
State and local income tax									(24,058)	(16,979)	(1,649)
Goodwill impairment									0	19,789	28,794
Penalties									0	0	5,140
Other									5,834	(2,497)	472
Total income tax benefit	$ 49,069	$ (56,357)	$ (147,183)	$ (106,189)	$ (91,056)	$ (54,630)	$ 23,120	$ (18,670)	$ (260,660)	$ (141,236)	$ (9,012)