Other Comprehensive Income (Schedule Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (661)	$ (3,983)	$ (2,583)	$ (5,353)
Net Change	1,278	1,538	3,200	2,908
Ending Balance	617	(2,445)	617	(2,445)
Net Unrealized (Loss) Gain On Investment Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	2,357	(1,045)	522	(2,348)
Net Change	1,188	1,471	3,023	2,774
Ending Balance	3,545	426	3,545	426
Net Defined Benefit Pension Plan Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(3,018)	(2,938)	(3,105)	(3,005)
Net Change	90	67	177	134
Ending Balance	$ (2,928)	$ (2,871)	$ (2,928)	$ (2,871)