Income Taxes - Reconciliation of income tax expense (benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes
Income tax rate (as a percent)	21.00%	21.00%	21.00%
Federal income tax expense (benefit)	$ 93,185	$ 94,235	$ (37,426)
State income tax expense (benefit), net of federal benefit	20,891	21,375	(6,998)
Equity-based compensation	1,027	1,713	516
Carryback of NOLs			(11,225)
Change in valuation allowance	2,582
Other	(191)	(200)	(555)
Total income tax expense (benefit)	$ 117,494	$ 117,123	$ (55,688)