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Shareholder's Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Equity [Abstract] |  |
Common Stock, Dividends, Per Share, Declared | $ 0.09 | $ 0.08
Dividends, Common Stock, Total | $ 562 | $ 495
Capital conservation buffer | 2.50% | 1.875%
Dividend payment restrictions schedule, description | Under Alabama law, a state-chartered bank must annually transfer to surplus at least 10% of its “net earnings” (defined as the remainder of all earnings from current operations plus actual recoveries on loans and investments and other assets, less all current operating expenses, actual losses, accrued dividends on preferred stock and all federal, state and local taxes) until the bank’s surplus is at least 20% of its capital. Until the bank’s surplus reaches this level, a bank may not declare a dividend in excess of 90% of its net earnings. Once a bank’s surplus equals or exceeds 20% of its capital, if the total of all dividends declared by the bank in a calendar year will exceed the sum of its net earnings for that year and its retained net earnings for the preceding two years (less any required transfers to surplus), then the bank must obtain prior written approval from the Superintendent of the Alabama State Banking Department. The bank may not pay any dividends or make any withdrawals or transfers from surplus without the prior written approval of the Superintendent. The FDIC prohibits the payment of cash dividends if (1) as a result of such payment, the bank would be undercapitalized or (2) the bank is in default with respect to any assessment due to the FDIC, including a deposit insurance assessment. These restrictions could materially influence the Bank’s, and therefore Bancshares’, ability to pay dividends. |

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