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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, 2019 | Dec. 31, 2018
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 3,347,000 | $ 7,741,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 3,246,000 | 7,990,000
Financing Receivable, Modifications, Recorded Investment | 2,391,000 | 7,020,000
Home Equity [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  | 14,000
Financing Receivable, Modifications, Post-Modification Recorded Investment |  | 14,000
Financing Receivable, Modifications, Recorded Investment |  | 1,000
Commercial Portfolio [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  | 4,110,000
Financing Receivable, Modifications, Post-Modification Recorded Investment |  | 4,460,000
Financing Receivable, Modifications, Recorded Investment |  | 4,302,000
Commercial Portfolio [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 2,670,000 | 2,940,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 2,571,000 | 2,841,000
Financing Receivable, Modifications, Recorded Investment | 1,894,000 | 2,201,000
Residential Portfolio [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 677,000 | 677,000
Financing Receivable, Modifications, Post-Modification Recorded Investment | 675,000 | 675,000
Financing Receivable, Modifications, Recorded Investment | $ 497,000 | $ 516,000

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