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Loans and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 1,951,000 | $ 3,282,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 1,850,000 | 3,181,000
Financing Receivable, Modifications, Recorded Investment | 981,000 | 2,238,000
Commercial Portfolio [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 8,000 | 3,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 8,000 | 3,000
Financing Receivable, Modifications, Recorded Investment | 7,000 | 3,000
Commercial Portfolio [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 1,214,000 | 2,562,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 1,115,000 | 2,463,000
Financing Receivable, Modifications, Recorded Investment | 440,000 | 1,705,000
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 | 39,000 | 40,000
Residential Portfolio [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 689,000 | 677,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 687,000 | 675,000
Financing Receivable, Modifications, Recorded Investment | $ 495,000 | $ 490,000

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