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LOANS AND CREDIT QUALITY - Loan Modifications, Financial Effect (Details) | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Commercial loans | Multifamily | Payment Deferral [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Weighted average time added to life of loans (in years) | 1 year 9 months 18 days |
Commercial loans | Commercial business | Payment Deferral [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Weighted average time added to life of loans (in years) | 5 years 1 month 6 days | 2 years 9 months 18 days
Commercial loans | Commercial business | Term Extension |  |
Financing Receivable, Modified [Line Items] |  |
Weighted average time added to life of loans (in years) | 3 years 9 months 18 days | 4 months 24 days
Commercial loans | Non-owner occupied CRE | Term Extension |  |
Financing Receivable, Modified [Line Items] |  |
Weighted average time added to life of loans (in years) |  | 3 months
Consumer loans | Single Family [Member] | Payment Deferral [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Weighted average percent of loan balances capitalized and added to term of loan | 4.70% | 2.50%
Consumer loans | Single Family [Member] | Term Extension |  |
Financing Receivable, Modified [Line Items] |  |
Weighted average time added to life of loans (in years) | 7 years 3 months 18 days | 1 year 10 months 24 days

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