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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR CREDIT LOSSES (Details) - USD ($)		3 Months Ended						9 Months Ended
	Oct. 01, 2023	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2023
Loans Receivable, Net and Related Allowance for Credit Losses [Line Items]
Commercial relationships, description								Generally, the external consultant reviews commercial relationships greater than $500 thousand and/or criticized relationships greater than $250 thousand.
Allowance for credit losses	$ 492,000
Provisions for credit losses		$ (54,000)			$ (81,000)			$ 441,000	$ 432,000
Loan recoveries		1,000	$ 65,000		$ 1,000	$ 1,000		67,000
Allowance for credit losses		7,700,000						7,700,000		$ 8,300,000
Balance sheet commitments increased		602,000						602,000		$ 0
Residential Real Estate [Member]
Loans Receivable, Net and Related Allowance for Credit Losses [Line Items]
Residential loans		$ 23,000						23,000
Minimum [Member]
Loans Receivable, Net and Related Allowance for Credit Losses [Line Items]
Allowance for credit losses								16,000
Maximum [Member]
Loans Receivable, Net and Related Allowance for Credit Losses [Line Items]
Allowance for credit losses								$ 8,300,000

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Amount of allowance for credit loss on accounts receivable.

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Amount of increase (decrease) in allowance for credit loss on financing receivable.

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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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