Comprehensive Income/Loss (Comprehensive Income/(Loss) Presented Net of Taxes) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Equity [Abstract]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax		$ (1,052)	$ 3,206	$ (1,097)	$ 7,965
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, Tax		289	(877)	302	(2,180)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(763)	2,329	(795)	5,785
COMPREHENSIVE INCOME
Change in fair value of securities available for sale, pre tax amount		(11,094)	12,743	(23,376)	34,007
Change in fair value of securities available for sale, tax (expense) benefit		2,508	(2,908)	5,297	(7,778)
Change in fair value of securities available for sale, after tax amount		(8,586)	9,835	(18,079)	26,229
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax		0	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax		0	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		0	0	0	0
Change in fair value of securities available for sale, pre tax amount		(11,094)	12,743	(23,376)	34,007
Change in fair value of securities available for sale, tax (expense) benefit		2,508	(2,908)	5,297	(7,778)
Change in fair value of securities available for sale, after tax amount		(8,586)	9,835	(18,079)	26,229
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax		(2,243)	697	(3,655)	2,786
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, Tax		616	(191)	1,004	(763)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax		(1,627)	506	(2,651)	2,023
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax		(1,191)	(2,509)	(2,558)	(5,179)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, Tax		327	686	702	1,417
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax		(864)	(1,823)	(1,856)	(3,762)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax		(30)	(67)	(60)	(133)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax		8	18	16	36
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax		(22)	(49)	(44)	(97)
Amortization of certain costs included in net periodic retirement costs, pre tax amount		4	5	8	9
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit		(1)	(1)	(2)	(2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax		3	4	6	7
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	[1]	(26)	(62)	(52)	(124)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	[1]	7	17	14	34
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	[1]	(19)	(45)	(38)	(90)
Total other comprehensive income, pre tax amount		(12,172)	15,887	(24,525)	41,848
Total other comprehensive income, tax (expense) benefit		2,804	(3,768)	5,613	(9,924)
Total other comprehensive income, after tax amount		$ (9,368)	$ 12,119	$ (18,912)	$ 31,924

[1] The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 13 - Employee Benefit Plans within the Notes to the Consolidated Financial Statements included in Item 8 of the 2025 Form 10-K.