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Allowance For Loan Losses (Schedule Of Information Related To Average Recorded Investment And Interest Income Recognized On Impaired Loans) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Financing Receivable, Impaired [Line Items]    
With no related allowance recorded, Average recorded investment $ 6,138 $ 8,519
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 14 4
With an allowance recorded, Average recorded investment 1,419 1,012
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method 24 0
Commercial and industrial    
Financing Receivable, Impaired [Line Items]    
With no related allowance recorded, Average recorded investment 2,099 2,913
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 0 0
With an allowance recorded, Average recorded investment 0 0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method 0 0
Commercial real estate    
Financing Receivable, Impaired [Line Items]    
With no related allowance recorded, Average recorded investment 4,039 5,606
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 14 4
With an allowance recorded, Average recorded investment 1,419 1,012
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method $ 24 $ 0