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Junior Subordinated Debt - Additional Information (Detail) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Class of Stock [Line Items] |  |
Junior subordinated debt | $ 41,238 | $ 101,191
Subordinated debt |  |
Class of Stock [Line Items] |  |
Face Value | 41,238 |
Junior subordinated debt | $ 41,238 | 101,191
VRB Subordinated - 5% | Subordinated debt |  |
Class of Stock [Line Items] |  |
Interest rate | 5.00% |
Face Value | $ 0 |
Junior subordinated debt | 0 | $ 25,007
North Valley Trust II, III, IV and VRB Subordinated and Subordinated Debt | Subordinated debt |  |
Class of Stock [Line Items] |  |
Face Value | 57,700 |
Junior subordinated debt | 60,200 |
Gain on extinguishment of debt | $ 2,500 |

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