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Allowance For Loan Losses (Schedule Of Impaired Loans) (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Financing Receivable, Impaired [Line Items]    
With no related allowance recorded, Recorded investment $ 4,157 $ 4,749
With no related allowance recorded, Unpaid principal balance 8,146 8,738
With an allowance recorded, Recorded investment 5,804 2,832
With an allowance recorded, Unpaid principal balance 5,804 2,832
Related allowance 705 665
Commercial and industrial    
Financing Receivable, Impaired [Line Items]    
With no related allowance recorded, Recorded investment 1,095 1,611
With no related allowance recorded, Unpaid principal balance 3,259 3,775
With an allowance recorded, Recorded investment 0 0
With an allowance recorded, Unpaid principal balance 0 0
Related allowance 0 0
Commercial real estate    
Financing Receivable, Impaired [Line Items]    
With no related allowance recorded, Recorded investment 3,062 3,138
With no related allowance recorded, Unpaid principal balance 4,887 4,963
With an allowance recorded, Recorded investment 5,804 2,832
With an allowance recorded, Unpaid principal balance 5,804 2,832
Related allowance $ 705 $ 665