Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current
Federal	$ 5,516	$ (37,561)	$ (42,183)
State and other	368	197	(305)
Total Current	5,884	(37,364)	(42,488)
Deferred
Federal	(44,488)	11,073	34,301
State and other	(711)	(1,316)	641
Total Deferred	(45,199)	9,757	34,942
Changes in valuation allowance	0	0	(1,270)
Total	$ (39,315)	$ (27,607)	$ (8,816)