Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal	$ (3,959)	$ (12)	$ (29)
State	380	1,173	665
Local	(627)	739	557
Total current	(4,206)	1,900	1,193
Deferred:
Federal	(105,058)	12,881	(68,103)
State	(29)	(1,448)	(2,691)
Local	(7,977)	(89)	21
Total deferred	(113,064)	11,344	(70,773)
Income tax (benefit) expense	$ (117,270)	$ 13,244	$ (69,580)