LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Loans Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024
Schedule of Loans Receivable [Line Items]
Total loans receivable	$ 845,410	$ 781,216
Net deferred loan costs	(1,419)	(1,054)
Total loans receivable, net	843,991	780,162
One-to-four family residential [Member]
Schedule of Loans Receivable [Line Items]
One-to-four family residential	245,235	246,201
Commercial real estate [Member]
Schedule of Loans Receivable [Line Items]
Commercial real estate	523,990	461,319
Construction and land [Member]
Schedule of Loans Receivable [Line Items]
Construction and land	25,930	22,722
Home equity loans and lines of credit [Member]
Schedule of Loans Receivable [Line Items]
Home equity loans and lines of credit	29,415	24,728
Commercial business [Member]
Schedule of Loans Receivable [Line Items]
Commercial business	19,135	24,011
Other [Member]
Schedule of Loans Receivable [Line Items]
Other	$ 1,705	$ 2,235

Amount of commercial business.

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Amount of home equity lines of credit.

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Amount of deferred costs incurred to originate loans and leases from face amounts of acquired loans.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of family residential.

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Unsecured short-term debt instrument issued by corporations which are highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount, after allowance for credit loss, of accounts and financing receivables, classified as noncurrent. Includes, but is not limited to, notes and loan receivable.

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Amount due from parties in nontrade transactions, classified as other.

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