Comprehensive Income (Loss), Net of Tax - Reclassification Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Expense	$ 57,732	$ 11,308	$ 5,195
Salaries and Employee Benefits	47,667	47,003	44,798
Total before tax	37,520	62,913	64,404
Provision for Income Taxes	(7,445)	(14,114)	(14,547)
NET INCOME	30,075	48,799	49,857
Net Unrealized Securities Holding Gains (Losses) Arising During the Period | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (Loss) Gain on Securities	(9,097)
Net Unrealized Gains (Losses) on Cash Flow Swap | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Expense	(750)	(204)	126
Amortization of Net Retirement Plan Prior Service Cost | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Employee Benefits	(205)	(228)	(232)
Net Actuarial Gain (Loss) | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Employee Benefits	162	(56)	(91)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(9,890)	(488)	(197)
Provision for Income Taxes	2,548	126	50
NET INCOME	$ (7,342)	$ (362)	$ (147)