Accumulated Other Comprehensive Loss - Schedule of Reclassifications out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Reclassifications out of accumulated other comprehensive income
Net unrealized loss on available for sale securities	$ (45)	$ (156)	$ (125)	$ (168)
Net unrecognized pension costs	(1,378)	(1,165)	(4,275)	(3,723)
Income tax effect	(439)	(1,190)	(2,355)	(2,869)
Net Income	2,224	5,250	11,053	12,913
Amount Reclassified from Accumulated Other Comprehensive Loss | Net Unrealized (Loss) Gain on Available for Sale Securities
Reclassifications out of accumulated other comprehensive income
Net unrealized loss on available for sale securities	(45)	(156)	(125)	(168)
Income tax effect	9	33	26	35
Net Income	(36)	(123)	(99)	(133)
Amount Reclassified from Accumulated Other Comprehensive Loss | Defined Benefit  Plan
Reclassifications out of accumulated other comprehensive income
Net unrecognized pension costs	(37)	(17)	(111)	(52)
Income tax effect	8	3	23	11
Net Income	$ (29)	$ (14)	$ (88)	$ (41)