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Loans and Allowance for Loan Losses (Detail Textuals) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 USD ($) Contract | Sep. 30, 2017 USD ($) Contract | Sep. 30, 2018 USD ($) Contract | Sep. 30, 2017 USD ($) Contract | Dec. 31, 2017 USD ($)
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Amount of loans pledged as collateral to the Federal Home Loan Bank |  | $ 498,200,000 |  | $ 498,200,000 |  |
Look back period |  |  |  | 5 years |  |
Impaired loans individually evaluated for impairment |  | 9,305,000 |  | $ 9,305,000 |  | $ 10,356,000
Impaired loans were evaluated based on the fair value of the loan's collateral |  | 4,200,000 |  | 4,200,000 |  | 4,000,000
Specific allowance related to impaired loans |  | 1,225,000 |  | 1,225,000 |  | 1,333,000
Impaired loans with no reserve allocation |  | $ 2,989,000 |  | $ 2,989,000 |  | $ 2,433,000
Impaired loans required no reserve allocation, percentage |  | 32.00% |  | 32.00% |  | 23.00%
Interest income recognized on impaired loans |  | $ 52,000 | $ 61,000 | $ 151,000 | $ 200,000 |
Troubled debt restructurings |  | 5,400,000 |  | 5,400,000 |  | $ 6,400,000
Amount of specific reserves related to TDRs which were allocated to the allowance for loan losses |  | $ 569,000 |  | $ 569,000 |  | 577,000
Number of contracts modified | Contract | [1] | 3 | 1 | 8 | 3 |
Residential Real Estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Specific allowance related to impaired loans |  | $ 166,000 |  | $ 166,000 |  | 521,000
Impaired loans with no reserve allocation |  | 1,142,000 |  | 1,142,000 |  | 674,000
Value of mortgage loans in process of foreclosure |  | 253,000 |  | 253,000 |  |
Residential Real Estate | Mortgages [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Impaired loans individually evaluated for impairment |  | 5,145,000 |  | $ 5,145,000 |  | 5,072,000
Number of contracts modified | Contract | [1] |  |  | 1 | 1 |
Number of mortgage loans in process of foreclosure | Contract |  |  |  | 1 |  |
Value of mortgage loans in process of foreclosure |  | 48,000 |  | $ 48,000 |  |
Commercial real estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Specific allowance related to impaired loans |  | 21,000 |  | 21,000 |  | 243,000
Impaired loans with no reserve allocation |  | 119,000 |  | $ 119,000 |  | 366,000
Number of mortgage loans in process of foreclosure | Contract |  |  |  | 1 |  |
Value of mortgage loans in process of foreclosure |  | 366,000 |  | $ 366,000 |  |
Commercial real estate | Mortgages [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Impaired loans individually evaluated for impairment |  | $ 1,028,000 |  | $ 1,028,000 |  | 2,004,000
Number of contracts modified | Contract | [1] | 0 | 1 | 0 | 1 |
Minimum |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Look back period |  |  |  | 3 years |  |
Maximum |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Look back period |  |  |  | 5 years |  |
Performing TDRs |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Troubled debt restructurings |  | $ 3,200,000 |  | $ 3,200,000 |  | 1,700,000
Nonperforming TDRs |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Troubled debt restructurings |  | $ 2,200,000 |  | $ 2,200,000 |  | $ 4,700,000
[1] | The amounts reported post-modification are inclusive of all partial pay-downs and charge-offs, and no portion of the debt was forgiven. Loans modified as a TDR that were fully paid down, charged-off or foreclosed upon during the period ended are not reported.

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses that were evaluated for impairment based on the fair value of the collateral. + References No definition available. + Details
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