FAIR VALUE OF FINANCIAL INSTRUMENTS - Quantitative Information on Assed Value, Non Recurring (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands	Mar. 31, 2026 USD ($)	Jun. 30, 2025 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net loans receivable	$ 23,445	$ 21,082
Market valuation of underlying collateral \| Measurement Input, Cost to Sell \| Commercial \| Multi-family mortgage
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net loans receivable	18,748	16,385
Market valuation of underlying collateral \| Measurement Input, Cost to Sell \| Commercial \| Nonresidential mortgage
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net loans receivable	$ 4,697	$ 4,697
Collateral dependent loans, measurement input	0.0931	0.0944
Market valuation of underlying collateral \| Minimum \| Measurement Input, Cost to Sell \| Commercial \| Multi-family mortgage
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Collateral dependent loans, measurement input	0.0600	0.0600
Market valuation of underlying collateral \| Maximum \| Measurement Input, Cost to Sell \| Commercial \| Multi-family mortgage
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Collateral dependent loans, measurement input	0.2500	0.2400
Market valuation of underlying collateral \| Weighted Average \| Measurement Input, Cost to Sell \| Commercial \| Multi-family mortgage
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Collateral dependent loans, measurement input	0.1263	0.1508
Market valuation of underlying collateral \| Weighted Average \| Measurement Input, Cost to Sell \| Commercial \| Nonresidential mortgage
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Collateral dependent loans, measurement input	0.0931	0.0944