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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 | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | $ 25,129 | $ 15,919
Nonaccrual loans with related allowance | 9,937 | 10,730
Total nonaccrual loans | 35,066 | 26,649
Commercial and industrial, including specialized lending |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 3,322 | 3,365
Nonaccrual loans with related allowance | 286 | 1,071
Total nonaccrual loans | 3,608 | 4,436
Multifamily |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 5,161 | 0
Nonaccrual loans with related allowance | 0 | 0
Total nonaccrual loans | 5,161 | 0
Commercial real estate owner occupied |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 8,920 | 5,869
Nonaccrual loans with related allowance | 0 | 0
Total nonaccrual loans | 8,920 | 5,869
Commercial real estate non-owner occupied |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 62 | 0
Nonaccrual loans with related allowance | 0 | 0
Total nonaccrual loans | 62 | 0
Residential real estate |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 7,664 | 6,685
Nonaccrual loans with related allowance | 425 | 117
Total nonaccrual loans | 8,089 | 6,802
Manufactured housing |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 0 | 0
Nonaccrual loans with related allowance | 2,268 | 2,331
Total nonaccrual loans | 2,268 | 2,331
Installment |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual loans with no related allowance | 0 | 0
Nonaccrual loans with related allowance | 6,958 | 7,211
Total nonaccrual loans | $ 6,958 | $ 7,211

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- Definition Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-16 + Details
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