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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] - Loans, Excluding PCI Loans [Member] - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Description of assets |  |
Total assets | $ 2,300 | $ 5,722
Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets |  | 0
Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 2,258 | 2,128
Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
SBA |  |
Description of assets |  |
Total assets | 26 | 57
SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 16 | 3,510
Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 0 | 27
Municipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Other Real Estate Owned [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | SBA |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Municipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [Member] | Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 1 [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] | Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | SBA |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Municipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 2 [Member] | Other Real Estate Owned [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] |  |
Description of assets |  |
Total assets | 24,731 | 30,465
Level 3 [Member] | Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 13,813 | 18,678
Level 3 [Member] | Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | SBA |  |
Description of assets |  |
Total assets | 211 | 995
Level 3 [Member] | SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 4,612 | 6,092
Level 3 [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 5,787 | 4,700
Level 3 [Member] | Municipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 308 | 0
Level 3 [Member] | Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Level 3 [Member] | Other Real Estate Owned [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] |  |
Description of assets |  |
Total assets | 24,731 | 30,465
Carrying Value [Member] | Asset Held-for-Sale [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | Commercial Real Estate [Member] |  |
Description of assets |  |
Total assets | 13,813 | 18,678
Carrying Value [Member] | Construction [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | SBA |  |
Description of assets |  |
Total assets | 211 | 995
Carrying Value [Member] | SBA - PPP [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | Commercial and Industrial [Member] |  |
Description of assets |  |
Total assets | 4,612 | 6,092
Carrying Value [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Description of assets |  |
Total assets | 5,787 | 4,700
Carrying Value [Member] | Municipal Lease Finance Receivables [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | SFR Mortgage [Member] |  |
Description of assets |  |
Total assets | 308 | 0
Carrying Value [Member] | Consumer and Other Loans [Member] |  |
Description of assets |  |
Total assets | 0 | 0
Carrying Value [Member] | Other Real Estate Owned [Member] |  |
Description of assets |  |
Total assets |  | $ 0

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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