Income Taxes - Provision (benefit) for income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Provision (benefit) for income taxes
Federal	$ 27,500	$ 20,200	$ 11,000
State	5,500	4,600	3,100
Foreign	1,800	1,400	1,300
Current income tax expense	34,800	26,200	15,400
Deferred
Federal	(3,800)	2,300	17,300
State	2,700	200	(2,700)
Deferred income tax expense (benefit)	(1,071)	(2,065)	(20,049)
Provision (benefit) for income taxes	$ 33,674	$ 24,059	$ (4,568)