Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 42,964	$ 39,427	$ 40,546
Other comprehensive income (loss):
Unrealized holding gains (loss) on available for sale securities	12,330	(85,517)	(8,570)
Tax effect	(2,583)	18,079	1,799
Reclassification of gains recognized in net income		(10)	(1)
Tax effect		2
Pension liability adjustment	972	736	992
Tax effect	(204)	(155)	(209)
Reclassification of actuatial gain recognized in net income			240
Tax effect			(50)
Total other comprehensive income (loss)	10,515	(66,865)	(5,799)
Comprehensive income (loss)	$ 53,479	$ (27,438)	$ 34,747