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Loans and Allowance for Loan and Lease Losses (Non-accrual Loans by Classes of the Loan Portfolio Including Loans Acquired With Credit Deterioration) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | $ 6,339 | $ 15,047
Home Equity [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 2,420 | 2,365
Commercial Portfolio [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 221 | 1,452
Commercial Portfolio [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 2,569 | 10,520
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 22 | 31
Residential Portfolio [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | $ 1,107 | $ 679

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