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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, 2020 USD ($) Collateral
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Financing Receivable, Modifications [Line Items] |
Real Estate | $ 8,874
Business Assets | 6,049
Other | $ 89
Number of Instruments Dependent on Collateral | Collateral | 40
Commercial and Industrial [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 145
Business Assets | 4,703
Other | $ 62
Number of Instruments Dependent on Collateral | Collateral | 14
Small Business Administration [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 1,015
Business Assets | 497
Other | $ 7
Number of Instruments Dependent on Collateral | Collateral | 11
SBA - Paycheck Protection Program (PPP) [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 0
Business Assets | 0
Other | $ 0
Number of Instruments Dependent on Collateral | Collateral | 0
Commercial Real Estate [Member] |
Financing Receivable, Modifications [Line Items] |
Business Assets | $ 0
Other | 0
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 | $ 675
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 | 849
Other | $ 0
Number of Instruments Dependent on Collateral | Collateral | 1
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 | $ 203
Business Assets | 0
Other | $ 20
Number of Instruments Dependent on Collateral | Collateral | 4
Commercial Real Estate Owner Occupied [Member] |
Financing Receivable, Modifications [Line Items] |
Real Estate | $ 6,836
Number of Instruments Dependent on Collateral | Collateral | 7

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