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LOANS AND CREDIT QUALITY - Loan Modifications, Financial Effect (Details)	3 Months Ended
	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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