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LOANS RECEIVABLE - Additional Information (Details)	3 Months Ended	6 Months Ended
	Dec. 31, 2022 USD ($) loan	Dec. 31, 2023 USD ($) loan property	Dec. 31, 2022 USD ($) loan	Jun. 30, 2023 USD ($) loan
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	$ 5,000		$ 15,000
Number of TDR loans in process of defaulting | loan	2		2
Financing receivable, troubled debt restructuring, commitment to lend		0
TDR defaults	$ 170,000		$ 170,000
Financing receivable, individually evaluated for impairment		28,100,000
Residential
Financing Receivable Recorded Investment [Line Items]
Troubled debt restructuring				7,526,000
TDR defaults		$ 490,000
Nonresidential Property
Financing Receivable Recorded Investment [Line Items]
Real estate acquired through foreclosure, number of properties | property		1
Real estate acquired through foreclosure		$ 12,000,000		$ 12,000,000
Commercial Mortgage
Financing Receivable Recorded Investment [Line Items]
Number of loans in process of foreclosure | loan		4		6
Mortgage loans in process of foreclosure, carrying value		$ 8,100,000		$ 9,200,000
Single-family Property
Financing Receivable Recorded Investment [Line Items]
Real estate acquired through foreclosure				$ 13,000,000
Residential mortgage
Financing Receivable Recorded Investment [Line Items]
Number of loans in process of foreclosure | loan				3
Mortgage loans in process of foreclosure, carrying value				$ 950,000
Collateral Pledged
Financing Receivable Recorded Investment [Line Items]
Financing receivable, individually evaluated for impairment		19,890,000		38,196,000
Collateral Pledged | Residential
Financing Receivable Recorded Investment [Line Items]
Financing receivable, individually evaluated for impairment		$ 2,635,000		$ 2,875,000

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