Income Taxes - Components of Federal and State Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current (benefit) expense
Federal taxes	$ (1,205)	$ 2,875	$ 1,552
State taxes	5,665	6,434	(630)
Total current provision	4,460	9,309	922
Deferred expense (benefit)
Federal taxes	12,183	6,708	(52,886)
State taxes	(539)	(500)	(1,169)
Total deferred provision	11,644	6,208	(54,055)
Income tax expense (benefit)	$ 16,104	$ 15,517	$ (53,133)
Effective tax rate	22.70%	25.00%