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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, 2025	Dec. 31, 2024
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	$ 34,323	$ 32,593
Nonaccrual loans with related allowance	6,749	7,905
Total nonaccrual loans	41,072	40,498
Commercial and industrial, including specialized lending
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	18,754	4,041
Nonaccrual loans with related allowance	0	0
Total nonaccrual loans	18,754	4,041
Multifamily
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	0	11,834
Nonaccrual loans with related allowance	0	0
Total nonaccrual loans	0	11,834
Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	7,793	8,090
Nonaccrual loans with related allowance	0	0
Total nonaccrual loans	7,793	8,090
Commercial real estate non-owner occupied
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	62	354
Nonaccrual loans with related allowance	0	0
Total nonaccrual loans	62	354
Residential real estate
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	7,714	8,274
Nonaccrual loans with related allowance	437	440
Total nonaccrual loans	8,151	8,714
Manufactured housing
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	0	0
Nonaccrual loans with related allowance	1,653	1,852
Total nonaccrual loans	1,653	1,852
Installment
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	0	0
Nonaccrual loans with related allowance	4,659	5,613
Total nonaccrual loans	$ 4,659	$ 5,613

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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

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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
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
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-Publisher FASB
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