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Fair Value Information - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) - Fair Value on Non-Recurring Basis [Member] - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Description of assets |  |
Total assets | $ 789 | $ 5,722
Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 31 | 2,128
Loans, Excluding PCI Loans [Member] | Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Loans, Excluding PCI Loans [Member] | SBA [Member] |  |
Description of assets |  |
Total assets | 0 | 57
Loans, Excluding PCI Loans [Member] | SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 232 | 3,510
Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 498 | 27
Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member] |  |
Description of assets |  |
Total assets | 28 | 0
Level 1 [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] |  |
Description of assets |  |
Total assets | 38,495 | 30,465
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 21,259 | 18,678
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member] |  |
Description of assets |  |
Total assets | 317 | 995
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 5,778 | 6,092
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 10,494 | 4,700
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member] |  |
Description of assets |  |
Total assets | 647 | 0
Carrying Value [Member] |  |
Description of assets |  |
Total assets | 38,495 | 30,465
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 21,259 | 18,678
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member] |  |
Description of assets |  |
Total assets | 317 | 995
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 5,778 | 6,092
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 10,494 | 4,700
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Muncipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member] |  |
Description of assets |  |
Total assets | $ 647 | $ 0

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