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Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes
Effective tax rates on continuing operations	(4.30%)	24.70%	21.60%
Federal statutory income tax rate (as a percent)	21.00%	21.00%	21.00%
Income taxes at the federal statutory rate	$ 49,530	$ 39,958	$ 40,223
Increases (decreases) resulting from-
Net state income taxes	9,376	7,340	8,406
Valuation allowances	(95)	(39)	(254)
Net unrecognized tax benefits	(17,922)	640	18,557
Nondeductible expenses	4,045	2,381	2,470
R&D tax credits	(51,398)		(26,133)
179D deduction	(964)	(1,207)	(1,062)
Stock-based compensation deductions	(872)	(2,210)	(426)
Other	(1,789)	63	(380)
Provision (benefit) for income taxes	$ (10,089)	$ 46,926	$ 41,401

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