Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning	$ 204,072	$ 206,875	$ 200,675	$ 238,604
Other comprehensive income (loss), net of taxes	(2,767)	(6,943)	2,183	(20,131)
Balance ending	202,316	202,960	202,316	202,960
Total [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning	(25,004)	(14,997)	(29,954)	(1,809)
Balance ending	(27,771)	(21,940)	(27,771)	(21,940)
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning	(24,977)	(14,725)	(29,927)	(1,536)
Other comprehensive income (loss), net of taxes	(2,767)	(6,945)	2,183	(20,134)
Balance ending	(27,744)	(21,670)	(27,744)	(21,670)
Changes in Pension Plan Assets and Benefit Obligations [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning	(27)	(272)	(27)	(273)
Other comprehensive income (loss), net of taxes	0	2	0	3
Balance ending	$ (27)	$ (270)	$ (27)	$ (270)