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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Feb. 22, 2021 | Dec. 31, 2020
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Finite Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill | $ 111,853 |  |  |  | $ 104,992
BBM & Associates, Inc. |  |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill |  | $ 1,400 |  |  |
LINCO Bancshares, Inc. |  |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill | $ 5,449 |  | $ 9,000 | $ 5,449 |

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