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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
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Financing Receivable, Impaired [Line Items]    
With no related allowance recorded, Average recorded investment $ 3,782 $ 4,483
With no related allowance recorded, Interest income recognized 3 5
With an allowance recorded, Average recorded investment 5,750 2,832
With an allowance recorded, Interest income recognized 52 19
Commercial and industrial    
Financing Receivable, Impaired [Line Items]    
With no related allowance recorded, Average recorded investment 774 1,365
With no related allowance recorded, Interest income recognized 0 0
With an allowance recorded, Average recorded investment 0 0
With an allowance recorded, Interest income recognized 0 0
Commercial real estate    
Financing Receivable, Impaired [Line Items]    
With no related allowance recorded, Average recorded investment 3,008 3,118
With no related allowance recorded, Interest income recognized 3 5
With an allowance recorded, Average recorded investment 5,750 2,832
With an allowance recorded, Interest income recognized $ 52 $ 19