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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Summary of Amortized Cost of Loans and Leases on Nonaccrual Status (Detail) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | $ 14,385 | $ 41,508
Nonaccrual loans with related allowance | 9,036 | 7,605
Total nonaccrual loans | 23,421 | 49,113
Commercial and industrial, including specialty lending |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 4,061 | 5,837
Nonaccrual loans with related allowance | 0 | 259
Total nonaccrual loans | 4,061 | 6,096
Multi-family |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 1,153 | 22,654
Nonaccrual loans with related allowance | 0 | 0
Total nonaccrual loans | 1,153 | 22,654
Commercial real estate owner occupied |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 2,913 | 2,475
Nonaccrual loans with related allowance | 0 | 0
Total nonaccrual loans | 2,913 | 2,475
Commercial real estate non-owner occupied |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 0 | 2,815
Nonaccrual loans with related allowance | 0 | 0
Total nonaccrual loans | 0 | 2,815
Residential real estate |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 6,258 | 7,727
Nonaccrual loans with related allowance | 0 | 0
Total nonaccrual loans | 6,258 | 7,727
Manufactured housing |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 0 | 0
Nonaccrual loans with related allowance | 3,071 | 3,563
Total nonaccrual loans | 3,071 | 3,563
Installment |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 0 | 0
Nonaccrual loans with related allowance | 5,965 | 3,783
Total nonaccrual loans | $ 5,965 | $ 3,783

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