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Junior Subordinated Debt - Additional Information (Detail) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) trust location | Mar. 25, 2022 USD ($) | Dec. 31, 2021 USD ($)
Class of Stock [Line Items] |  |  |
Number of subsidiary business trusts (in trusts) | trust | 5 |  |
Preferred stock, value issued | $ 0 |  | $ 0
Interest deferral period | 5 years |  |
Number of locations organized (in locations) | location | 2 |  |
Senior Subordinated Notes |  |  |
Class of Stock [Line Items] |  |  |
Face Value | $ 98,889 | $ 36,000 |
VRB Subordinated - 6% | Senior Subordinated Notes |  |  |
Class of Stock [Line Items] |  |  |
Face Value | $ 16,000 | 16,000 |
Current Coupon Rate | 6.00% |  |
Interest rate | 6.00% |  |
VRB Subordinated - 6% | Senior Subordinated Loans |  |  |
Class of Stock [Line Items] |  |  |
Current Coupon Rate | 6.00% |  |
Interest rate | 5.00% |  |
VRB Subordinated - 6% | Senior Subordinated Loans | LIBOR PLUS |  |  |
Class of Stock [Line Items] |  |  |
Basis spread on variable rate | 3.52% |  |
VRB Subordinated - 6% | Senior Subordinated Loans | SOFR |  |  |
Class of Stock [Line Items] |  |  |
Basis spread on variable rate | 4.90% |  |
VRB Subordinated - 5% | Senior Subordinated Notes |  |  |
Class of Stock [Line Items] |  |  |
Face Value | $ 20,000 | $ 20,000 |
Current Coupon Rate | 5.00% |  |
Interest rate | 5.00% |  |
Wholly owned subsidiaries |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, value issued | $ 63,000 |  |
North Valley Bancorp |  |  |
Class of Stock [Line Items] |  |  |
Number of subsidiary business trusts (in trusts) | trust | 3 |  |
Number of locations acquired (in locations) | location | 3 |  |

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