Revenue Recognition Of Non-Interest Income (Schedule Of Disaggregation Of Insurance Service And Other Fees) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total insurance service and other fees	$ 10,261	$ 10,453	$ 10,457
Commercial Property And Casualty Insurance Commissions [Member]
Disaggregation of Revenue [Line Items]
Total insurance service and other fees	4,232	4,308	3,993
Personal Property And Casualty Insurance Commissions [Member]
Disaggregation of Revenue [Line Items]
Total insurance service and other fees	3,328	3,363	3,288
Employee Benefits Sales Commissions [Member]
Disaggregation of Revenue [Line Items]
Total insurance service and other fees	763	851	902
Profit Sharing And Contingent Revenue [Member]
Disaggregation of Revenue [Line Items]
Total insurance service and other fees	1,198	1,164	1,198
Wealth Management And Other Financial Services [Member]
Disaggregation of Revenue [Line Items]
Total insurance service and other fees	600	632	638
Insurance Claims Services Revenue [Member]
Disaggregation of Revenue [Line Items]
Total insurance service and other fees			285
Other Insurance-Related Revenue [Member]
Disaggregation of Revenue [Line Items]
Total insurance service and other fees	$ 140	$ 135	$ 153