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Income Tax Expense Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] |  |
Earnings before income taxes | $ 11,483 | $ 11,252
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate | $ 3,904 | $ 3,826
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate | 34.00% | 34.00%
Income Tax Reconciliation, Tax Exempt Income | $ (813) | $ (857)
Effective Income Tax Rate Reconciliation, Tax Exempt Income | (7.00%) | (7.60%)
Income Tax Reconciliation, State and Local Income Taxes | $ 325 | $ 325
Effective Income Tax Rate Reconciliation, State and Local Income Taxes | 2.80% | 2.90%
Income Tax Reconciliation, Bank Owned Life Insurance | $ (150) | $ (155)
Effective Income Tax Rate Reconciliation, Bank Owned Life Insurance | (1.30%) | (1.40%)
Income Tax Reconciliation, Federal Tax Reform Impact | $ 370 |
Effective Income Tax Rate Reconciliation, Federal Tax Reform Impact | 3.20% |
Income Tax Reconciliation, Other Adjustments | $ 1 | $ (37)
Effective Income Tax Rate Reconciliation, Other Adjustments | 0.00% | (0.30%)
Income Tax Expense (Benefit), Continuing Operations, Total | $ 3,637 | $ 3,102
Effective Income Tax Rate, Continuing Operations | 31.70% | 27.60%

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