Income Taxes - Components of Federal and State Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current (benefit) expense
Federal taxes	$ (13,748)	$ (16,393)	$ (6,033)
State taxes	(2,148)	(282)	833
Total current provision	(15,896)	(16,675)	(5,200)
Deferred expense (benefit)
Federal taxes	13,729	16,453	4,433
State taxes	1,581	395	(576)
Total deferred provision	15,310	16,848	3,857
Income tax (benefit) expense	$ (586)	$ 173	$ (1,343)
Effective tax rate	(28.70%)	6.80%	(183.00%)

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