Other Comprehensive Loss - Tax Effect on Each Component (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Tax effect on each component of other comprehensive loss
Pretax amount	$ (2,076)	$ 3,025
Tax	553	(805)
After Tax Amount	(1,523)	2,220
Unfunded Pension Liability
Tax effect on each component of other comprehensive loss
Pretax amount	(1,745)	302
Tax	465	(80)
After Tax Amount	(1,280)	222
Unrealized (Gain) / Loss on Securities
Tax effect on each component of other comprehensive loss
Pretax amount	(331)	2,723
Tax	88	(725)
After Tax Amount	$ (243)	$ 1,998