Accumulated Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total accumulated other comprehensive (loss)	$ (47,961)	$ (51,287)
Accumulated Other Comprehensive Income (Loss), Debt Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss, Before tax	(57,286)	(61,497)
Accumulated other comprehensive loss, Tax effect	12,029	12,914
Total accumulated other comprehensive (loss)	(45,257)	(48,583)
Accumulated Other Comprehensive Income (Loss), Pension [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss, Before tax	(3,423)	(3,423)
Accumulated other comprehensive loss, Tax effect	719	719
Total accumulated other comprehensive (loss)	$ (2,704)	$ (2,704)