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Troubled Debt Restructurings (Details Textual) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) Loans | Sep. 30, 2018 USD ($) Loans | Sep. 30, 2019 USD ($) Loans | Sep. 30, 2018 USD ($) Loans | Dec. 31, 2018 USD ($)
Financing Receivable Modifications [Line Items] |  |  |  |  |
Total troubled debt restructurings | $ 4,600,000 |  | $ 4,600,000 |  | $ 5,500,000
Specific reserves to loans | 63,000 |  | 63,000 |  | 276,000
Commitments to lend additional amounts to borrowers classified as troubled debt restructurings | 0 |  | 0 |  | 0
Provision for loan losses | $ 550,000 | $ 950,000 | 1,850,000 | $ 2,475,000 |
Commercial loans |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Provision for loan losses |  |  | $ 0 |  |
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans | 4 | 1 | 4 | 1 |
Loans default payment past due period |  |  | 30 days |  |
Residential real estate loan |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans | 2 | 3 | 2 | 3 |
Loans default payment past due period |  | 30 days |  |  |
Residential real estate, Home equity lines of credit |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans | 1 |  | 1 |  |
Troubled debt restructurings |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Specific reserves to loans | $ 63,000 |  | $ 63,000 |  | $ 72,000
Allowance adjustment charge offs | 42,000 | $ 27,000 | 93,000 | $ 66,000 |
Provision for loan losses | $ 42,000 | $ 27,000 | $ 93,000 | $ 66,000 |
Extended Maturity |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Maturity period loans |  | 84 months |  |  |
Extended Maturity | Minimum |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Maturity period loans |  |  | 86 months | 5 months |
Extended Maturity | Maximum |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Maturity period loans |  |  | 124 months | 84 months |
Contractual Interest Rate Reduction | Minimum |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Reduction of the notes stated interest rate |  |  | 0.24% | 1.75% |
Contractual Interest Rate Reduction | Maximum |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |
Reduction of the notes stated interest rate |  |  | 2.74% | 2.50% |

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