Comprehensive Income - Schedule of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Before-Tax Amount
Other Comprehensive Income, before tax	$ 3,020	$ 7,631	$ 13,213	$ 10,036
Tax (Expense) Benefit
Other Comprehensive Income, tax	(771)	(1,967)	(3,400)	(2,588)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	2,060	5,818	10,424	7,934
Reclassification from AOCI, current period	189	(154)	(611)	(486)
Other Comprehensive Income	2,249	5,664	9,813	7,448
Net Unrealized Securities Holding Gain on Securities Available-for-Sale Arising During the Period
Before-Tax Amount
OCI, before reclassifications	3,304	12,505	16,336	11,457
Tax (Expense) Benefit
Other comprehensive (loss) income before reclassifications, tax	(852)	(3,223)	(4,212)	(2,954)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	2,452	9,282	12,124	8,503
Reclassification from AOCI, current period	0	0	0	0
Other Comprehensive Income	2,452	9,282	12,124	8,503
Net Unrealized (Loss) on Cash Flow Swap
Before-Tax Amount
OCI, before reclassifications	(538)	(4,667)	(2,300)	(766)
Reclassification from AOCI, current period	300	(196)	(688)	(624)
Tax (Expense) Benefit
Other comprehensive (loss) income before reclassifications, tax	146	1,203	600	197
Reclassification from AOCI, current period	(78)	50	177	161
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(392)	(3,464)	(1,700)	(569)
Reclassification from AOCI, current period	222	(146)	(511)	(463)
Other Comprehensive Income	(170)	(3,610)	(2,211)	(1,032)
Amortization of Net Retirement Plan Actuarial (Gain)
Before-Tax Amount
Reclassification from AOCI, current period	(128)	(78)	(383)	(235)
Tax (Expense) Benefit
Reclassification from AOCI, current period	33	20	99	61
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	0	0	0	0
Reclassification from AOCI, current period	(95)	(58)	(284)	(174)
Other Comprehensive Income	(95)	(58)	(284)	(174)
Amortization of Net Retirement Plan Prior Service Cost
Before-Tax Amount
Reclassification from AOCI, current period	82	67	248	204
Tax (Expense) Benefit
Reclassification from AOCI, current period	(20)	(17)	(64)	(53)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	0	0	0	0
Reclassification from AOCI, current period	62	50	184	151
Other Comprehensive Income	$ 62	$ 50	$ 184	$ 151