Borrowed Funds (Summary Of Short-Term Borrowings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Balance at December 31	$ 199,345	$ 309,084
Short-term FHLB Advances [Member]
Debt Instrument [Line Items]
Balance at December 31	199,200	303,950
Average balance outstanding for the period	193,992	223,764
Maximum balance outstanding at any month end during period	$ 237,400	$ 303,950
Weighted average interest rate for the period	2.48%	2.18%
Weighted average interest rate for balances outstanding	1.83%	2.71%
Federal Funds Purchased and Lines of Credit [Member]
Debt Instrument [Line Items]
Balance at December 31	$ 145	$ 5,134
Average balance outstanding for the period	458	4,378
Maximum balance outstanding at any month end during period	$ 145	$ 7,534
Weighted average interest rate for the period	2.43%	1.95%
Weighted average interest rate for balances outstanding	1.75%	2.50%