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Loans and Allowance for Loan and Lease Losses (Impaired Loans by Loan Portfolio Class) (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Home Equity [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | $ 99 | $ 2,377
Impaired Loans with No Allowance: Unpaid Principal Balance | 99 | 2,377
Impaired Loans: Total Recorded Investment | 184 | 2,463
Impaired Loans: Total Unpaid Principal Balance | 206 | 2,488
Home Equity [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 85 | 86
Impaired Loans with No Allowance: Unpaid Principal Balance | 107 | 111
Commercial Portfolio [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Unpaid Principal Balance |  | 31
Impaired Loans with Allowance: Recorded Investment | 523 | 308
Impaired Loans with Allowance: Unpaid Principal Balance | 554 | 339
Impaired Loans with Allowance: Related Allowance | 75 | 67
Impaired Loans: Total Recorded Investment | 523 | 308
Impaired Loans: Total Unpaid Principal Balance | 554 | 370
Commercial Portfolio [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 821 | 854
Impaired Loans with No Allowance: Unpaid Principal Balance | 1,213 | 1,243
Impaired Loans with Allowance: Recorded Investment | 280 | 287
Impaired Loans with Allowance: Unpaid Principal Balance | 345 | 359
Impaired Loans with Allowance: Related Allowance | 114 | 121
Impaired Loans: Total Recorded Investment | 3,210 | 3,372
Impaired Loans: Total Unpaid Principal Balance | 4,384 | 4,511
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 2,109 | 2,231
Impaired Loans with No Allowance: Unpaid Principal Balance | 2,826 | 2,909
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment |  | 22
Impaired Loans with No Allowance: Unpaid Principal Balance | 5 | 27
Impaired Loans: Total Recorded Investment | 1,221 | 1,218
Impaired Loans: Total Unpaid Principal Balance | 1,468 | 1,496
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: Recorded Investment | 1,221 | 1,196
Impaired Loans with No Allowance: Unpaid Principal Balance | 1,463 | 1,469
Residential Portfolio [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 1,338 | 1,259
Impaired Loans with No Allowance: Unpaid Principal Balance | 1,377 | 1,295
Impaired Loans: Total Recorded Investment | 2,623 | 2,621
Impaired Loans: Total Unpaid Principal Balance | 3,240 | 3,142
Residential Portfolio [Member] | Residential Mortgage [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 1,285 | 1,362
Impaired Loans with No Allowance: Unpaid Principal Balance | $ 1,863 | $ 1,847

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