Comprehensive Income/Loss (Comprehensive Income/(Loss) Presented Net of Taxes) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Equity [Abstract]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax		$ 1,924	$ 12,046	$ 9,889	$ 12,386
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, Tax		(527)	(3,293)	(2,707)	(3,386)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		1,397	8,753	7,182	9,000
COMPREHENSIVE INCOME
Change in fair value of securities available for sale, pre tax amount		11,822	36,678	45,829	38,084
Change in fair value of securities available for sale, tax (expense) benefit		(2,703)	(8,392)	(10,481)	(9,414)
Change in fair value of securities available for sale, after tax amount		9,119	28,286	35,348	28,670
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax		(64)	0	(64)	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax		14	0	14	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		(50)	0	(50)	0
Change in fair value of securities available for sale, pre tax amount		11,886	36,678	45,893	38,084
Change in fair value of securities available for sale, tax (expense) benefit		(2,717)	(8,392)	(10,495)	(9,414)
Change in fair value of securities available for sale, after tax amount		9,169	28,286	35,398	28,670
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax		(347)	7,144	2,439	(3,402)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, Tax		95	(1,953)	(668)	930
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax		(252)	5,191	1,771	(2,472)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax		(2,271)	(4,902)	(7,450)	(15,788)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, Tax		622	1,340	2,039	4,316
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax		(1,649)	(3,562)	(5,411)	(11,472)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax		(66)	(24)	(199)	(74)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax		18	6	54	20
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax		(48)	(18)	(145)	(54)
Amortization of certain costs included in net periodic retirement costs, pre tax amount		4	4	13	13
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit		(1)	(2)	(3)	(4)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax		3	2	10	9
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	[1]	(62)	(20)	(186)	(61)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	[1]	17	4	51	16
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	[1]	(45)	(16)	(135)	(45)
Total other comprehensive income, pre tax amount		13,748	48,704	55,596	50,409
Total other comprehensive income, tax (expense) benefit		(3,227)	(11,681)	(13,151)	(12,784)
Total other comprehensive income, after tax amount		$ 10,521	$ 37,023	$ 42,445	$ 37,625

[1] The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 12 - Employee Benefit Plans within the Notes to the Consolidated Financial Statements included in Item 8 of the 2024 Form 10-K.