Accumulated Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total shareholders' equity	$ 183,845	$ 178,744	$ 175,242	$ 157,364	$ 151,391	$ 144,716
Accumulated Other Comprehensive (Loss) Income, Debt Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss, Before tax	(29,083)		(26,717)
Accumulated other comprehensive loss, Tax effect	6,108		5,611
Total shareholders' equity	(22,975)		(21,106)
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	(611)		(611)
Accumulated other comprehensive loss, Tax effect	128		128
Total shareholders' equity	(483)		(483)
Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total shareholders' equity	$ (23,458)	$ (23,265)	$ (21,589)	$ (30,784)	$ (31,856)	$ (35,508)