Allowance For Loan Losses (Schedule Of Troubled Debt Restructurings) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) contract	Dec. 31, 2017 USD ($) contract
Financing Receivable, Modifications [Line Items]
Accruing	$ 34,191	$ 32,568
Non-Accruing	663	134
Total	$ 34,854	$ 32,702
Number of Contracts | contract	43	48
Pre-modification Outstanding Recorded Investment	$ 2,600	$ 7,356
Post-modification Outstanding Recorded Investment	2,600	7,261
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Accruing	98	135
Non-Accruing	0	0
Total	$ 98	$ 135
Number of Contracts | contract	0	0
Pre-modification Outstanding Recorded Investment	$ 0	$ 0
Post-modification Outstanding Recorded Investment	0	0
Commercial real estate
Financing Receivable, Modifications [Line Items]
Accruing	8,205	8,381
Non-Accruing	0	0
Total	$ 8,205	$ 8,381
Number of Contracts | contract	0	2
Pre-modification Outstanding Recorded Investment	$ 0	$ 3,098
Post-modification Outstanding Recorded Investment	0	3,003
Residential real estate
Financing Receivable, Modifications [Line Items]
Accruing	22,863	21,005
Non-Accruing	658	84
Total	$ 23,521	$ 21,089
Number of Contracts | contract	33	33
Pre-modification Outstanding Recorded Investment	$ 2,326	$ 3,987
Post-modification Outstanding Recorded Investment	2,326	3,987
Home equity
Financing Receivable, Modifications [Line Items]
Accruing	3,025	3,047
Non-Accruing	5	50
Total	$ 3,030	$ 3,097
Number of Contracts | contract	10	13
Pre-modification Outstanding Recorded Investment	$ 274	$ 271
Post-modification Outstanding Recorded Investment	274	271
Consumer
Financing Receivable, Modifications [Line Items]
Accruing	0	0
Non-Accruing	0	0
Total	$ 0	$ 0
Number of Contracts | contract	0	0
Pre-modification Outstanding Recorded Investment	$ 0	$ 0
Post-modification Outstanding Recorded Investment	$ 0	$ 0