Other Comprehensive Income (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (2,424)	$ (1,810)
Net Change	250	689
Ending Balance	(2,174)	(1,121)
Net Unrealized (Loss) Gain On Investment Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(365)	475
Net Change	187	649
Ending Balance	(178)	1,124
Net Defined Benefit Pension Plan Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,059)	(2,285)
Net Change	63	40
Ending Balance	$ (1,996)	$ (2,245)