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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2018 | Dec. 22, 2017 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statutory federal tax rate |  |  |  |  |  |  |  |  |  |  |  |  | 21.00% |  | 35.00% |  | 35.00% |
Change in corporate federal statutory income tax rate |  | 25.00% | 21.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net operating loss carryforward | [1] |  |  | $ 50 |  |  |  | $ 76 |  |  |  |  | $ 50 |  | $ 76 |  |  |
Amounts of tax benefits that would affect effective tax rate if recognized |  |  |  | 1,272 |  |  |  | 1,464 |  |  |  |  | 1,272 |  | 1,464 |  | $ 1,225 |
Income tax accrued interest |  |  |  | 136 |  |  |  | 139 |  |  |  |  | 136 |  | 139 |  | 108 |
Increase (reduction) in accrued interest |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  | 31 |  |  |
Reduction of tax benefits over the next twelve months |  |  |  |  |  |  |  |  |  |  |  |  | 316 |  |  |  |  |
Income tax expense |  |  |  | 1,502 | $ 1,481 | $ 1,387 | $ 1,709 | $ 3,576 | [2] | $ 2,396 | $ 2,248 | $ 1,665 | $ 6,079 | [3] | $ 9,885 | [2],[3] | $ 7,716 | [3]
Percentage of pre-tax income tax rate |  |  |  |  |  |  |  |  |  |  |  |  | 17.00% |  | 28.00% |  | 24.00% |
Non-cash charge |  |  |  |  |  |  |  |  |  |  |  |  | $ (74) |  | $ 1,824 |  |  |
Impact of the reduction in the corporate tax rate deferred tax assets and liabilities expected |  |  |  |  |  |  |  |  |  |  |  |  | 1,824 |  |  |  |  |
Reduction of tax expense |  |  |  |  |  |  |  |  |  |  |  |  | 74 |  |  |  |  |
Franklin Bancorp [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net operating loss carryforward |  |  |  | 238 |  |  |  |  |  |  |  |  | 238 |  |  |  |  |
Limitations on use |  |  |  | $ 122 |  |  |  |  |  |  |  |  | $ 122 |  |  |  |  |
Net operating loss carryforward expiration date |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 31, 2020 |  |  |  |  |
[1] | As of December 31, 2018, the Company had approximately $238,000 of net operating loss carry forwards as a result of the acquisition of Franklin Bancorp. The utilization of the net operating loss carry forward is subject to Section 382 of the Internal Revenue Code and limits the Company's use to approximately $122,000 per year during the carry forward period, which expires in 2020.
[2] | Includes one-time, non-cash TCJA charge of $1,824,000
[3] | Presented on a tax-equivalent basis assuming a tax rate of 21% for 2018 and 35% for 2017 and 2016. The tax-equivalent adjustment was approximately $2,422,000 for 2018, $5,691,000 for 2017, and $5,550,000 for 2016.

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