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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Loans Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Sep. 30, 2025
Schedule of Loans Receivable [Line Items]
Total loans receivable	$ 879,942	$ 858,899
Net deferred loan costs	(1,723)	(1,546)
Total loans receivable, net	878,219	857,353
One-to-four family residential [Member]
Schedule of Loans Receivable [Line Items]
One-to-four family residential	234,434	242,454
Commercial Real Estate [Member]
Schedule of Loans Receivable [Line Items]
Commercial real estate	557,764	533,213
Construction and Land [Member]
Schedule of Loans Receivable [Line Items]
Construction and land	35,714	29,287
Home Equity Loans and Lines of Credit [Member]
Schedule of Loans Receivable [Line Items]
Home equity loans and lines of credit	30,310	31,778
Commercial Business [Member]
Schedule of Loans Receivable [Line Items]
Commercial business	19,878	20,048
Other [Member]
Schedule of Loans Receivable [Line Items]
Other	$ 1,842	$ 2,119

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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, 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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