Income Taxes - Provision for Income Tax (Benefit) Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 1,070	$ 4,305	$ 7,418
State			48
Total	1,070	4,305	7,466
Deferred:
Federal	5,903	488	(23,512)
State	2,474	(5,529)	(1,835)
Total	8,377	(5,041)	(25,347)
Total income tax expense (benefit)	$ 9,447	$ (736)	$ (17,881)