Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (6,820)	$ 2,452
Net change in unrealized (losses) on available-for-sale securities :
Unrealized losses	(7,108)	(80)
Income benefit effect	1,529	(27)
Total other comprehensive loss, net of tax	(5,579)	(107)
Total comprehensive (loss) income	$ (12,399)	$ 2,345