FAIR VALUE - Carrying and Fair Values (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Financial assets
Cash and cash equivalents	$ 165,190	$ 150,478
Securities available for sale, at fair value	257,409
Securities available for sale		431,667
Securities held to maturity	22,437	21,744
Equity securities		2,413
FHLBNY and FRBNY stock	3,546	1,196
Net loans receivable		1,144,169
Net loans receivable	1,344,069
Accrued interest receivable	$ 7,559	$ 7,194
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Financial liabilities
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities	Other Liabilities
Level 1
Financial assets
Cash and cash equivalents	$ 165,190	$ 150,478
Securities available for sale, at fair value	243,549
Securities available for sale		377,729
Equity securities		2,413
Level 2
Financial assets
Securities available for sale, at fair value	13,860
Securities available for sale		53,938
Securities held to maturity	22,437	21,744
FHLBNY and FRBNY stock	3,546
FHLBNY stock		1,196
Accrued interest receivable	7,559	7,194
Derivative assets	161	684
Financial liabilities
Savings, money market, and demand accounts	1,383,222	1,424,874
Time deposits	165,420	114,596
Mortgagors' escrow deposits	9,701	7,888
Accrued interest payable	137	84
Derivative liabilities	16,765	18,828
Level 3
Financial assets
Net loans receivable		1,095,366
Net loans receivable	1,293,472
Carrying amount
Financial assets
Cash and cash equivalents	165,190	150,478
Securities available for sale, at fair value	257,409
Securities available for sale		431,667
Securities held to maturity	25,090	23,949
Equity securities		2,413
FHLBNY and FRBNY stock	3,546
FHLBNY stock		1,196
Net loans receivable		1,144,169
Net loans receivable	1,344,069
Accrued interest receivable	7,559	7,194
Derivative assets	161	684
Financial liabilities
Savings, money market, and demand accounts	1,383,222	1,424,874
Time deposits	167,030	116,977
Mortgagors' escrow deposits	9,701	7,888
Accrued interest payable	137	84
Derivative liabilities	16,765	18,828
Fair value
Financial assets
Cash and cash equivalents	165,190	150,478
Securities available for sale, at fair value	257,409
Securities available for sale		431,667
Securities held to maturity	22,437	21,744
Equity securities		2,413
FHLBNY and FRBNY stock	3,546
FHLBNY stock		1,196
Net loans receivable		1,095,366
Net loans receivable	1,293,472
Accrued interest receivable	7,559	7,194
Derivative assets	161	684
Financial liabilities
Savings, money market, and demand accounts	1,383,222	1,424,874
Time deposits	165,420	114,596
Mortgagors' escrow deposits	9,701	7,888
Accrued interest payable	137	84
Derivative liabilities	$ 16,765	$ 18,828