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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 | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Home Equity [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment | $ 2,367 | $ 1,801 | $ 27
Impaired Loans with No Allowance: Interest Income Recognized | 2 |  |
Impaired Financing Receivable, Average Recorded Investment, Total | 2,375 | 1,802 | 31
Impaired Financing Receivable, Interest Income Recognized, Total | 2 |  |
Home Equity [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment | 8 | 1 | 4
Commercial Portfolio [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment | 303 | 1,136 | 178
Impaired Loans with No Allowance: Interest Income Recognized | 2 |  | 3
Impaired Loans with Allowance: Average Recorded Investment | 211 | 205 | 962
Impaired Financing Receivable, Average Recorded Investment, Total | 514 | 1,342 | 1,158
Impaired Financing Receivable, Interest Income Recognized, Total | 2 |  | 3
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment |  | 1 | 18
Commercial Portfolio [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment | 2,308 | 9,379 | 3,363
Impaired Loans with No Allowance: Interest Income Recognized | 2 | 5 | 20
Impaired Loans with Allowance: Average Recorded Investment | 1,011 | 752 | 424
Impaired Financing Receivable, Average Recorded Investment, Total | 4,804 | 11,554 | 5,384
Impaired Financing Receivable, Interest Income Recognized, Total | 2 | 5 | 20
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment | 1,485 | 1,423 | 1,597
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment | 26 | 44 | 32
Impaired Loans with Allowance: Average Recorded Investment |  |  | 147
Impaired Financing Receivable, Average Recorded Investment, Total | 148 | 44 | 179
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment | 122 |  |
Residential Portfolio [Member] | Residential Mortgage [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment | 974 | 998 | 854
Impaired Loans with No Allowance: Interest Income Recognized | 26 | 26 | 30
Impaired Financing Receivable, Average Recorded Investment, Total | 1,375 | 1,359 | 1,845
Impaired Financing Receivable, Interest Income Recognized, Total | 26 | 26 | 30
Residential Portfolio [Member] | Residential Mortgage [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Loans with No Allowance: Average Recorded Investment | $ 401 | $ 361 | $ 991

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