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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	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	$ 13,848	$ 41,508
Nonaccrual loans with related allowance	9,456	7,605
Total nonaccrual loans	23,304	49,113
Commercial and industrial, including specialty lending
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	4,054	5,837
Nonaccrual loans with related allowance	24	259
Total nonaccrual loans	4,078	6,096
Multi-family
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	1,158	22,654
Nonaccrual loans with related allowance	0	0
Total nonaccrual loans	1,158	22,654
Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	2,198	2,475
Nonaccrual loans with related allowance	0	0
Total nonaccrual loans	2,198	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	6,438	7,727
Nonaccrual loans with related allowance	0	0
Total nonaccrual loans	6,438	7,727
Manufactured housing
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	0	0
Nonaccrual loans with related allowance	2,584	3,563
Total nonaccrual loans	2,584	3,563
Installment
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	0	0
Nonaccrual loans with related allowance	6,848	3,783
Total nonaccrual loans	$ 6,848	$ 3,783

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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