Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 12,888	$ 8,466
Other comprehensive income (loss):
Unrealized holding gains (losses) on available-for-sale securities	10,302	(37,446)
Tax effect	(2,167)	7,882
Pension liability adjustment		69
Tax effect		(14)
Total other comprehensive income (loss)	8,135	(29,509)
Comprehensive income (loss)	$ 21,023	$ (21,043)