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Loans and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 1,909,000 | $ 2,582,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 1,808,000 | 2,480,000
Financing Receivable, Modifications, Recorded Investment | 847,000 | 1,480,000
Commercial Portfolio [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 8,000 | 8,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 8,000 | 8,000
Financing Receivable, Modifications, Recorded Investment | 5,000 | 6,000
Commercial Portfolio [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 1,214,000 | 1,806,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 1,115,000 | 1,707,000
Financing Receivable, Modifications, Recorded Investment | 339,000 | 933,000
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 40,000 | 40,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 40,000 | 40,000
Financing Receivable, Modifications, Recorded Investment | 22,000 | 31,000
Residential Portfolio [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 647,000 | 728,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 645,000 | 725,000
Financing Receivable, Modifications, Recorded Investment | $ 481,000 | 510,000
Residential Portfolio [Member] | Commercial and Industrial [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Recorded Investment |  | $ 6,000

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