Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Net federal income tax payable, current	$ 19,900
State net operating loss carryforward	76,100
Deferred tax assets, valuation allowance	83,428	$ 77,728
Unrecognized tax benefits that would impact effective tax rate	3,900
Unrecognized tax benefits, interest and penalties charged to income	700	$ 300
Unrecognized tax benefits decreased amount	(400)
Decrease in unrecognized tax benefits is reasonably possible	1,200
Interest and Penalties
Unrecognized tax benefits that would impact effective tax rate	2,300
US Treasury Securities
Debt securities	$ 354,100