Borrowed Funds (Summary Of Short-Term Borrowings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Balance at December 31	$ 309,084	$ 250,499
Short-term FHLB Advances [Member]
Debt Instrument [Line Items]
Balance at December 31	303,950	247,000
Average balance outstanding for the period	223,764	201,712
Maximum balance outstanding at any month end during period	$ 303,950	$ 247,000
Weighted average interest rate for the period	2.18%	1.19%
Weighted average interest rate for balances outstanding	2.71%	1.60%
Repurchase Agreements [Member]
Debt Instrument [Line Items]
Balance at December 31		$ 0
Average balance outstanding for the period		519
Maximum balance outstanding at any month end during period		$ 0
Weighted average interest rate for the period		0.12%
Weighted average interest rate for balances outstanding		0.00%
Federal Funds Purchased and Lines of Credit [Member]
Debt Instrument [Line Items]
Balance at December 31	$ 5,134	$ 3,499
Average balance outstanding for the period	4,378	3,512
Maximum balance outstanding at any month end during period	$ 7,534	$ 3,499
Weighted average interest rate for the period	1.95%	1.10%
Weighted average interest rate for balances outstanding	2.50%	1.50%