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LOANS RECEIVABLE - Additional Information (Details)	3 Months Ended	9 Months Ended
	Mar. 31, 2023 USD ($) loan	Mar. 31, 2024 USD ($) loan	Mar. 31, 2023 USD ($) loan	Jun. 30, 2023 USD ($) loan property
Financing Receivable Recorded Investment [Line Items]
Interest income on non-accrual		$ 0	$ 0
Troubled debt restructuring				$ 17,361,000
Troubled debt restructuring, allowance for credit loss				274,000
TDR charge-offs	$ 6,000		$ 103,000
Number of TDR loans in process of defaulting | loan	2		2
Financing receivable, troubled debt restructuring, commitment to lend		0
TDR defaults	$ 649,000		$ 649,000
Financing receivable, individually evaluated for impairment		39,500,000
Residential
Financing Receivable Recorded Investment [Line Items]
Troubled debt restructuring				$ 7,526,000
TDR defaults		$ 490,000
Number of loans in process of foreclosure | loan		1		3
Mortgage loans in process of foreclosure, carrying value		$ 558,100		$ 950,000
Commercial
Financing Receivable Recorded Investment [Line Items]
Troubled debt restructuring				$ 9,467,000
Number of loans in process of foreclosure | loan		5		6
Mortgage loans in process of foreclosure, carrying value		$ 10,600,000		$ 9,200,000
Commercial | Nonresidential mortgage
Financing Receivable Recorded Investment [Line Items]
Troubled debt restructuring				$ 870,000
Real estate acquired through foreclosure, number of properties | property				1
Real estate acquired through foreclosure				$ 13,000,000
Collateral Pledged
Financing Receivable Recorded Investment [Line Items]
Financing receivable, individually evaluated for impairment		32,810,000		38,196,000
Collateral Pledged | Residential
Financing Receivable Recorded Investment [Line Items]
Financing receivable, individually evaluated for impairment		1,056,000		2,875,000
Collateral Pledged | Commercial
Financing Receivable Recorded Investment [Line Items]
Financing receivable, individually evaluated for impairment		31,735,000		35,321,000
Collateral Pledged | Commercial | Nonresidential mortgage
Financing Receivable Recorded Investment [Line Items]
Financing receivable, individually evaluated for impairment		$ 3,230,000		$ 16,207,000

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