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Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of Recorded Investment in Collateral-Dependent loans (Detail) $ in Thousands | Sep. 30, 2024 USD ($) Collateral | Dec. 31, 2023 USD ($) Collateral
--- | --- | ---
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 19,080 | $ 16,965
Business Assets | 2,749 | 3,170
Other | $ 82 | $ 1,167
Number of Loans Dependent on Collateral | Collateral | 14 | 19
Commercial Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 18,794 | $ 15,440
Business Assets | 0 | 0
Other | $ 0 | $ 0
Number of Loans Dependent on Collateral | Collateral | 5 | 5
Construction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 0 | $ 0
Business Assets | 0 | 0
Other | $ 0 | $ 0
Number of Loans Dependent on Collateral | Collateral | 0 | 0
SBA [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 146 | $ 749
Business Assets | 5 | 220
Other | $ 0 | $ 0
Number of Loans Dependent on Collateral | Collateral | 3 | 4
SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 0 | $ 0
Business Assets | 0 | 0
Other | $ 0 | $ 0
Number of Loans Dependent on Collateral | Collateral | 0 | 0
Commercial and Industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 80 | $ 392
Business Assets | 2,744 | 2,950
Other | $ 0 | $ 1,167
Number of Loans Dependent on Collateral | Collateral | 4 | 8
Dairy & Livestock and Agribusiness [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 60 | $ 60
Business Assets | 0 | 0
Other | $ 82 | $ 0
Number of Loans Dependent on Collateral | Collateral | 2 | 1
Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 0 | $ 0
Business Assets | 0 | 0
Other | $ 0 | $ 0
Number of Loans Dependent on Collateral | Collateral | 0 | 0
SFR Mortgage [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 0 | $ 324
Business Assets | 0 | 0
Other | $ 0 | $ 0
Number of Loans Dependent on Collateral | Collateral | 0 | 1
Consumer and Other Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 0 | $ 0
Business Assets | 0 | 0
Other | $ 0 | $ 0
Number of Loans Dependent on Collateral | Collateral | 0 | 0

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