Servicing Assets - Summary of Activity in Servicing Assets (Detail) - USD ($) $ in Thousands  | 
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024  | 
Sep. 30, 2023  | 
Sep. 30, 2024  | 
Sep. 30, 2023  | 
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| Transfers and Servicing [Abstract] | ||||
| Balance at beginning of period | $ 6,836 | $ 7,352 | $ 7,070 | $ 7,176 | 
| Addition related to sale of loans | 461 | 396 | 1,593 | 1,410 | 
| Amortization | (614) | (592) | (1,980) | (1,815) | 
| Change in valuation allowance | 385 | |||
| Balance at end of period | $ 6,683 | $ 7,156 | $ 6,683 | $ 7,156 | 
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- Definition Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of amortization of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount conveyed to unrelated parties of contract to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of increase (decrease) in the amortized amount from a decrease (increase) in the valuation allowance applied to the servicing asset for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- References No definition available. 
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