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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Apr. 22, 2021 | Mar. 31, 2021 | Mar. 31, 2020 | Apr. 21, 2021
Subsequent Event [Line Items] |  |  |  |
Dividends declared per share (in dollars per share) |  | $ 0.1025 | $ 0.10 |
Subsequent Event |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Stock price (in dollars per share) |  |  |  | $ 15.00
Dividends declared per share (in dollars per share) | $ 0.1025 |  |  |
Subsequent Event | SouthCrest Financial Group, Inc. |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Percentage of business acquired | 100.00% |  |  |
Value of combined stock-and-cash transaction | $ 84.0 |  |  |
Assets acquired | 2,400.0 |  |  |
Loans acquired | 1,400.0 |  |  |
Deposits acquired | 2,000.0 |  |  |
Tangible common equity acquired | $ 165.8 |  |  |
Cash paid in exchange for each share (in dollars per share) | $ 10.45 |  |  |
Shares exchanged for each share (in shares) | 0.7318 |  |  |
Percentage of shares that will be converted to cash consideration | 27.50% |  |  |
Percentage of shares that will be converted to common stock | 72.50% |  |  |
Merger consideration price (in dollars per share) | $ 10.83 |  |  |

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