Income Taxes - Benefit (Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income tax benefit (provision):
Federal	$ 17,484	$ 18,513	$ 16,615
State	9,606	7,082	5,802
Expiration of NOLs and R&D credit	(16,862)	(14,210)	(20,294)
Income tax benefit (provision) before valuation allowance	10,228	11,385	2,123
Deferred tax valuation allowance	$ (10,228)	(11,158)	(956)
Income tax benefit (provision)		$ 227	$ 1,167