Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 17,438	$ 14,929	$ 35,740	$ 27,465
Unrealized losses on investments, net of tax	(8,900)	(1,001)	(31,882)	(4,100)
Comprehensive income	$ 8,538	$ 13,928	$ 3,858	$ 23,365