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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Feb. 22, 2021
Finite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill, net | $ 140,412 |  | $ 111,853 |  |  |
Principal balance of mortgage loans serviced for others | $ 73,600 |  | $ 90,200 |  |  |
Weighted average amortization period of intangibles | 3 years 7 months 6 days |  |  |  |  |
Core Deposit Intangibles |  |  |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Weighted average amortization period of intangibles | 3 years 2 months 23 days |  |  |  |  |
Customer List Intangibles |  |  |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Weighted average amortization period of intangibles | 4 years 1 month 13 days |  |  |  |  |
Delta Bancshares Company |  |  |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill, net | $ 28,558 | $ 28,600 |  |  |  |
BBM & Associates, Inc. |  |  |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill, net |  |  |  | $ 1,400 |  |
LINCO Bancshares, Inc. |  |  |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill, net | $ 5,400 |  |  |  | $ 8,900 | $ 5,449

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