Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Accumulated Other Comprehensive Loss
Balance at the beginning	$ 203,634	$ 179,295
Balance at the end	205,262	183,694
Investment securities- with OTTI
Accumulated Other Comprehensive Loss
Balance at the beginning	(2,377)	(2,592)
Other comprehensive income/(loss) before reclassifications	162	6
Amounts reclassified from accumulated other comprehensive income	(36)	(37)
Balance at the end	(2,251)	(2,623)
Investment securities- all other
Accumulated Other Comprehensive Loss
Other comprehensive income/(loss) before reclassifications	(527)	1,357
Investment securities- all other - excluding transfers
Accumulated Other Comprehensive Loss
Balance at the beginning	(10,383)	(13,792)
Other comprehensive income/(loss) before reclassifications	(527)	1,357
Balance at the end	(10,910)	(12,435)
Investment Securities HTM
Accumulated Other Comprehensive Loss
Balance at the beginning	(4,212)	(4,696)
Amounts reclassified from accumulated other comprehensive income	116	113
Balance at the end	(4,096)	(4,583)
Cash flow hedges
Accumulated Other Comprehensive Loss
Balance at the beginning	73	372
Other comprehensive income/(loss) before reclassifications	(60)	(85)
Balance at the end	13	287
Net Pension Plan | Pension
Accumulated Other Comprehensive Loss
Balance at the beginning	(8,246)	(9,723)
Other comprehensive income/(loss) before reclassifications	(877)	(1,562)
Amounts reclassified from accumulated other comprehensive income	71	97
Balance at the end	(9,052)	(11,188)
Net Pension Plan | SERP
Accumulated Other Comprehensive Loss
Balance at the beginning	(121)	183
Balance at the end	(121)	183
Accumulated Other Comprehensive Loss, Net of Tax
Accumulated Other Comprehensive Loss
Balance at the beginning	(25,266)	(30,248)
Other comprehensive income/(loss) before reclassifications	(1,302)	(284)
Amounts reclassified from accumulated other comprehensive income	151	173
Balance at the end	$ (26,417)	$ (30,359)