Income Taxes - Schedule of Benefit from (Provision for) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal	$ (11,948)	$ (852)	$ (603)
State	(12,653)	(4,517)	(2,773)
Foreign	(91)	781	(960)
Total	(24,692)	(4,588)	(4,336)
Deferred:
Federal	42,322	9,465	(2,960)
State	5,377	1,788	(1,015)
Foreign	5,519
Total	53,218	11,253	(3,975)
Total benefit from (provision for) income taxes	$ 28,526	$ 6,665	$ (8,311)