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Business Combinations (Textual) (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  | 2 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 01, 2020 | Apr. 23, 2019 | Nov. 01, 2018 | May 01, 2018 | Feb. 29, 2020 | Sep. 30, 2019 | Dec. 31, 2018
Foothills Bancorp [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash to be paid upon conversion (in dollars per share) |  |  | $ 1.75 |  |  |  |
Common shares to be converted (in shares) |  |  | 0.666 |  |  |  |
Number of shares issued (in shares) |  |  | 1,183,232 |  |  |  |
Cash consideration paid |  |  | $ 6,069 |  |  |  |
Fair value adjustment |  |  |  |  |  | $ 473 |
Cash paid for merger |  |  | 3,100 |  |  |  |
Additional consideration transferred |  |  | $ 3,000 |  |  |  |
Pro forma, revenue of acquiree since acquisition date, actual |  |  |  |  |  |  | $ 1,500
Pro forma information, earnings (loss) since acquisition date, actual |  |  |  |  |  |  | 876
Pro forma revenue |  |  |  |  |  |  | 11,000
Pro forma net income (loss) |  |  |  |  |  |  | 1,600
Tennessee Bancshares [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Common shares to be converted (in shares) |  |  |  | 0.8065 |  |  |
Number of shares issued (in shares) |  |  |  | 1,458,981 |  |  |
Cash consideration paid |  |  |  | $ 5 |  |  |
Fair value adjustment |  |  |  |  |  |  | 54
Pro forma, revenue of acquiree since acquisition date, actual |  |  |  |  |  |  | 8,400
Pro forma information, earnings (loss) since acquisition date, actual |  |  |  |  |  |  | 3,500
Pro forma revenue |  |  |  |  |  |  | 14,700
Pro forma net income (loss) |  |  |  |  |  |  | 3,600
Entegra Financial Corp [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Termination fee received |  | $ 6,400 |  |  |  |  |
Pro Forma [Member] | Foothills Bancorp [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Operating expenses |  |  |  |  |  |  | 2,300
Pro Forma [Member] | Tennessee Bancshares [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Operating expenses |  |  |  |  |  |  | $ 2,000
Subsequent Event [Member] | Progressive Financial Group Inc. [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Distribution paid |  |  |  |  | $ 4,800 |  |
Subsequent Event [Member] | Progressive Financial Group Inc. [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash to be paid upon conversion (in dollars per share) | $ 474.82 |  |  |  |  |  |
Common shares to be converted (in shares) | 62.3808 |  |  |  |  |  |
Number of shares issued (in shares) | 1,292,592 |  |  |  |  |  |
Cash consideration paid | $ 9,800 |  |  |  |  |  |

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