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Loans and Allowance for Loan and Lease Losses (Average Recorded Investment Of Impaired Loans And Related Interest Income By Loan Portfolio Class) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Commercial Portfolio [Member] | Commercial and Industrial [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with Allowance: Average Recorded Investment $ 469 $ 124 $ 224 $ 127
Impaired Financing Receivable, Average Recorded Investment, Total 477 142 236 149
Impaired Financing Receivable, Interest Income Recognized, Total   100   205
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Excluded Acquired with Credit Deterioration [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with No Allowance: Average Recorded Investment 8 18 12 22
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with No Allowance: Interest Income Recognized   100   205
Commercial Portfolio [Member] | Commercial Real Estate [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with Allowance: Average Recorded Investment 2,643 5,167 2,036 5,077
Impaired Financing Receivable, Average Recorded Investment, Total 4,405 7,084 3,845 7,096
Impaired Financing Receivable, Interest Income Recognized, Total   14   361
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Excluded Acquired with Credit Deterioration [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with No Allowance: Average Recorded Investment 797 991 865 1,072
Impaired Loans with No Allowance: Interest Income Recognized   14   14
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with No Allowance: Average Recorded Investment 965 926 944 947
Impaired Loans with No Allowance: Interest Income Recognized       347
Consumer Portfolio [Member] | Residential Mortgage [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with Allowance: Average Recorded Investment   31   19
Impaired Financing Receivable, Average Recorded Investment, Total 1,210 1,192 1,177 1,119
Impaired Financing Receivable, Interest Income Recognized, Total 6 8 19 8
Consumer Portfolio [Member] | Residential Mortgage [Member] | Excluded Acquired with Credit Deterioration [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with No Allowance: Average Recorded Investment 834 735 802 673
Impaired Loans with No Allowance: Interest Income Recognized 6 8 15 8
Consumer Portfolio [Member] | Residential Mortgage [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with No Allowance: Average Recorded Investment 376 426 375 427
Impaired Loans with No Allowance: Interest Income Recognized     4  
Consumer Portfolio [Member] | Home Equity [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with Allowance: Average Recorded Investment 31 182 33 178
Impaired Financing Receivable, Average Recorded Investment, Total 93 203 92 200
Impaired Financing Receivable, Interest Income Recognized, Total   3   3
Consumer Portfolio [Member] | Home Equity [Member] | Excluded Acquired with Credit Deterioration [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with No Allowance: Average Recorded Investment $ 62 21 $ 59 22
Consumer Portfolio [Member] | Home Equity [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]        
Financing Receivable, Impaired [Line Items]        
Impaired Loans with No Allowance: Interest Income Recognized   $ 3   $ 3