Income Taxes - Schedule of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ (30,301)	$ 52,578	$ 1,358
State	5,623	15,275	4,035
Total current (benefit) expense	(24,678)	67,853	5,393
Deferred:
Federal	31,122	(46,364)	(9,636)
State	989	(11,752)	(2,827)
Total deferred expense (benefit)	32,111	(58,116)	(12,463)
Income tax expense (benefit)	$ 7,433	$ 9,737	$ (7,070)