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Loans (Summary Of Impaired Loans) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Financing Receivable, Impaired [Line Items]    
Recorded Investment, With no related allowance recorded [1] $ 1,013 $ 1,318
Recorded Investment, With an allowance recorded [1] 4,007 1,858
Recorded Investment [1] 5,020 3,176
Unpaid Principal Balance, With no related allowance recorded [1] 1,214 1,926
Unpaid Principal Balance, With an allowance recorded [1] 4,007 1,858
Unpaid Principal Balance [1] 5,221 3,784
Related Allowance 2,023 818
Average Recorded Investment, With no related allowance recorded 1,306 1,757
Average Recorded Investment, With an allowance recorded 2,728 1,627
Average Recorded Investment 4,034 3,384
Interest Income Recognized, With no related allowance recorded
Interest Income Recognized, With an allowance recorded
Interest Income Recognized
Commercial Business [Member]    
Financing Receivable, Impaired [Line Items]    
Recorded Investment, With no related allowance recorded [1] 424 645
Recorded Investment, With an allowance recorded [1] 3,329 1,506
Unpaid Principal Balance, With no related allowance recorded [1] 625 1,044
Unpaid Principal Balance, With an allowance recorded [1] 3,329 1,506
Related Allowance 1,897 694
Average Recorded Investment, With no related allowance recorded 686 1,032
Average Recorded Investment, With an allowance recorded 2,296 1,141
Interest Income Recognized, With no related allowance recorded
Interest Income Recognized, With an allowance recorded
Commercial Mortgage [Member]    
Financing Receivable, Impaired [Line Items]    
Recorded Investment, With no related allowance recorded [1] 589 673
Recorded Investment, With an allowance recorded [1] 678 352
Unpaid Principal Balance, With no related allowance recorded [1] 589 882
Unpaid Principal Balance, With an allowance recorded [1] 678 352
Related Allowance 126 124
Average Recorded Investment, With no related allowance recorded 620 725
Average Recorded Investment, With an allowance recorded 432 486
Interest Income Recognized, With no related allowance recorded
Interest Income Recognized, With an allowance recorded
[1] Difference between recorded investment and unpaid principal balance represents partial charge-offs.