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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Mar. 31, 2022
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Finite Lived Intangible Assets [Line Items] |  |  |  |
Goodwill, net | $ 140,412 | $ 140,412 |  |
Delta Bancshares Company |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |
Goodwill, net | $ 28,558 |  | $ 28,200 | $ 28,600

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