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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($) |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 27, 2016 | Aug. 31, 2014 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill impairment |  |  | $ 0 |  |
Intangible asset impairment charges |  |  | $ 0 | $ 0 | $ 0
CBI Merger |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill | $ 11,000,000.0 |  |  |  |
CBI Merger | Third-party originators intangible |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets acquired | $ 483,000 |  |  |  |
CBI Merger | Core deposit intangible |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets acquired |  | $ 2,200,000 |  |  |

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