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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, 2019
Dec. 31, 2018
Dec. 31, 2017
Financing Receivable, Impaired [Line Items]      
With no related allowance recorded, Average recorded investment $ 4,966 $ 5,468 $ 5,620
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 41 39 69
With an allowance recorded, Average recorded investment 4,261 5,043 4,307
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method 162 220 149
Commercial and industrial      
Financing Receivable, Impaired [Line Items]      
With no related allowance recorded, Average recorded investment 578 845 1,086
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 0 0 0
With an allowance recorded, Average recorded investment 0 0 0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method 0 0 0
Commercial real estate      
Financing Receivable, Impaired [Line Items]      
With no related allowance recorded, Average recorded investment 4,388 4,623 4,534
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method 41 39 69
With an allowance recorded, Average recorded investment 4,261 5,043 4,307
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method $ 162 $ 220 $ 149