Accumulated Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total shareholders' equity	$ 166,343	$ 157,364	$ 144,716	$ 149,928	$ 136,809	$ 132,136
Accumulated Other Comprehensive (Loss) Income, Debt Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss, Before tax	(30,869)		(43,149)
Accumulated other comprehensive loss, Tax effect	6,483		9,061
Total shareholders' equity	(24,386)		(34,088)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss, Before tax	(1,797)		(1,797)
Accumulated other comprehensive loss, Tax effect	377		377
Total shareholders' equity	(1,420)		(1,420)
Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total shareholders' equity	$ (25,806)	$ (30,784)	$ (35,508)	$ (30,885)	$ (40,881)	$ (40,940)