Income Taxes - Schedule of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ (1,136)	$ 2,162	$ 0
State	1,469	5,358	4,169
Total current	333	7,520	4,169
Deferred:
Federal	42,886	(172,048)	11,208
State	(3,565)	(10,726)	(2,206)
Total deferred	39,321	(182,774)	9,002
Total income tax expense (benefit)	$ 39,654	$ (175,254)	$ 13,171