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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 | Mar. 31, 2022 USD ($) Collateral | Dec. 31, 2021 USD ($) Collateral
--- | --- | ---
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 13,298 | $ 7,632
Business Assets | 5,955 | 5,650
Other | $ 2,965 | $ 208
Number of Loans Dependent on Collateral | Collateral | 55 | 39
Commercial Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 11,967 | $ 6,001
Business Assets | 0 | 0
Other | $ 0 | $ 0
Number of Loans Dependent on Collateral | Collateral | 14 | 6
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
Small Business Administration [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 398 | $ 405
Business Assets | 1,177 | 517
Other | $ 0 | $ 112
Number of Loans Dependent on Collateral | Collateral | 11 | 10
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
Commercial and Industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 594 | $ 688
Business Assets | 4,761 | 5,133
Other | $ 94 | $ 96
Number of Loans Dependent on Collateral | Collateral | 19 | 19
Dairy & Livestock and Agribusiness [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 131 | $ 0
Business Assets | 17 | 0
Other | $ 2,867 | $ 0
Number of Loans Dependent on Collateral | Collateral | 8 | 0
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
SFR Mortgage [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 168 | $ 380
Business Assets | 0 | 0
Other | $ 0 | $ 0
Number of Loans Dependent on Collateral | Collateral | 1 | 2
Consumer and Other Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Real Estate | $ 40 | $ 158
Business Assets | 0 | 0
Other | $ 4 | $ 0
Number of Loans Dependent on Collateral | Collateral | 2 | 2

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