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Loans Held for Investment and Allowance for Credit Losses on Loans - Transfers from Loans and Premises and Equipment to OREO and Repossessed Assets (Detail) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Noncash Investing and Financing Items [Abstract] |  |
Other real estate owned | $ 19,174 | $ 10,111
Repossessed assets | 2,245 | 2,332
Total | $ 21,419 | $ 12,443

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