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LOANS RECEIVABLE - Summary of Aging Analysis of Modifications (Details) $ in Thousands	Mar. 31, 2025 USD ($)
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	$ 11,829
Current
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	23,275
30-89 Days Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	11,170
90 Days and Over
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Total Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	11,170
Multifamily
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	11,170
Multifamily | Current
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	22,616
Multifamily | 30-89 Days Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	11,170
Multifamily | 90 Days and Over
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Multifamily | Total Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	11,170
Nonresidential mortgage
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	173
Nonresidential mortgage | Current
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	173
Nonresidential mortgage | 30-89 Days Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Nonresidential mortgage | 90 Days and Over
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Nonresidential mortgage | Total Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Residential Mortgage
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	442
Residential Mortgage | Current
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	442
Residential Mortgage | 30-89 Days Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Residential Mortgage | 90 Days and Over
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Residential Mortgage | Total Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Commercial
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	44
Commercial | Current
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	44
Commercial | 30-89 Days Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Commercial | 90 Days and Over
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	0
Commercial | Total Past Due
Financing Receivable Modifications [Line Items]
Financing receivable, modified in period	$ 0

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