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Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Recorded Investment in Collateral-Dependent loans (Detail) $ in Thousands | Mar. 31, 2020 USD ($) Collateral
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Financing Receivable, Modifications [Line Items] |
Real Estate | $ 4,236
Business Assets | 4,176
Other | $ 38
Number of Instruments Dependent on Collateral | Collateral | 43
Commercial and Industrial [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 112
Business Assets | 1,652
Other | $ 8
Number of Instruments Dependent on Collateral | Collateral | 12
Small Business Administration [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 1,852
Business Assets | 2,524
Other | $ 8
Number of Instruments Dependent on Collateral | Collateral | 19
Construction [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 0
Business Assets | 0
Other | $ 0
Number of Instruments Dependent on Collateral | Collateral | 0
SFR Mortgage [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 864
Business Assets | 0
Other | $ 0
Number of Instruments Dependent on Collateral | Collateral | 3
Dairy & Livestock and Agribusiness [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 0
Business Assets | 0
Other | $ 0
Number of Instruments Dependent on Collateral | Collateral | 0
Municipal Lease Finance Receivables [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 0
Business Assets | 0
Other | $ 0
Number of Instruments Dependent on Collateral | Collateral | 0
Consumer and Other Loans [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 84
Business Assets | 0
Other | $ 22
Number of Instruments Dependent on Collateral | Collateral | 4
Commercial Real Estate Owner Occupied [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 1,324
Business Assets | 0
Other | $ 0
Number of Instruments Dependent on Collateral | Collateral | 5

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