Loans (Schedule Of Troubled Debt Restructurings Occurring During The Year) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) loan	Mar. 31, 2017 USD ($) loan
General C&I
Financing Receivable, Modifications [Line Items]
Number | loan	5	1
Pre-Modification Outstanding Recorded Investment	$ 1,504	$ 27
Post-Modification Outstanding Recorded Investment	$ 1,214	$ 37
Commercial Financial And Industrial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Number | loan	5	1
Pre-Modification Outstanding Recorded Investment	$ 1,504	$ 27
Post-Modification Outstanding Recorded Investment	$ 1,214	$ 37
Home Equity Line of Credit
Financing Receivable, Modifications [Line Items]
Number | loan	30	35
Pre-Modification Outstanding Recorded Investment	$ 2,760	$ 2,589
Post-Modification Outstanding Recorded Investment	$ 2,733	$ 2,473
R E Installment Loans
Financing Receivable, Modifications [Line Items]
Number | loan	5	14
Pre-Modification Outstanding Recorded Investment	$ 611	$ 957
Post-Modification Outstanding Recorded Investment	$ 612	$ 902
Consumer Real Estate
Financing Receivable, Modifications [Line Items]
Number | loan	35	49
Pre-Modification Outstanding Recorded Investment	$ 3,371	$ 3,546
Post-Modification Outstanding Recorded Investment	$ 3,345	$ 3,375
Permanent Mortgage
Financing Receivable, Modifications [Line Items]
Number | loan	1	5
Pre-Modification Outstanding Recorded Investment	$ 275	$ 1,310
Post-Modification Outstanding Recorded Investment	$ 273	$ 1,303
Credit Card and Other
Financing Receivable, Modifications [Line Items]
Number | loan	41	6
Pre-Modification Outstanding Recorded Investment	$ 210	$ 21
Post-Modification Outstanding Recorded Investment	$ 197	$ 20
Troubled Debt Restructurings [Member]
Financing Receivable, Modifications [Line Items]
Number | loan	82	61
Pre-Modification Outstanding Recorded Investment	$ 5,360	$ 4,904
Post-Modification Outstanding Recorded Investment	$ 5,029	$ 4,735