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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, 2020 | Dec. 31, 2019
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Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | $ 12,896 | $ 11,471
Home Equity [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 2,386 | 26
Commercial Portfolio [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 913 | 894
Commercial Portfolio [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 8,859 | 9,800
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 32 | 40
Residential Portfolio [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | $ 706 | $ 711

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