Comprehensive Income - Schedule of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Before-Tax Amount
Other Comprehensive (Loss) Income, before tax	$ (978)	$ 6,648
Tax (Expense) Benefit
Other Comprehensive (Loss) Income	251	(1,715)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(908)	5,262
Reclassification from AOCI, current period	181	(329)
Other Comprehensive (Loss) Income	(727)	4,933
Net Unrealized Securities Holding (Loss) Gain on Securities Available-for-Sale Arising During the Period
Before-Tax Amount
OCI, before reclassifications	(2,439)	8,645
Tax (Expense) Benefit
Other comprehensive (loss) income before reclassifications, tax	629	(2,229)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(1,810)	6,416
Reclassification from AOCI, current period	0	0
Other Comprehensive (Loss) Income	(1,810)	6,416
Net Unrealized Gains (Losses) on Cash Flow Swap
Before-Tax Amount
OCI, before reclassifications	1,216	(1,554)
Reclassification from AOCI, current period	291	(430)
Tax (Expense) Benefit
Other comprehensive (loss) income before reclassifications, tax	(314)	400
Reclassification from AOCI, current period	(75)	111
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	902	(1,154)
Reclassification from AOCI, current period	216	(319)
Other Comprehensive (Loss) Income	1,118	(1,473)
Amortization of Net Retirement Plan Actuarial (Gain)
Before-Tax Amount
Reclassification from AOCI, current period	(117)	(96)
Tax (Expense) Benefit
Reclassification from AOCI, current period	30	25
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	0	0
Reclassification from AOCI, current period	(87)	(71)
Other Comprehensive (Loss) Income	(87)	(71)
Amortization of Net Retirement Plan Prior Service Cost
Before-Tax Amount
Reclassification from AOCI, current period	71	83
Tax (Expense) Benefit
Reclassification from AOCI, current period	(19)	(22)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	0	0
Reclassification from AOCI, current period	52	61
Other Comprehensive (Loss) Income	$ 52	$ 61