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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Individually Evaluated Loans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2026	Sep. 30, 2025
Schedule of Individually Evaluated Loans [Line Items]
Unpaid principal balance	$ 1,924	$ 451
Recorded investment	1,924	451
Allowance for credit losses
One-to-four family residential [Member]
Schedule of Individually Evaluated Loans [Line Items]
Unpaid principal balance	213	303
Recorded investment	213	303
Allowance for credit losses
Commercial real estate [Member]
Schedule of Individually Evaluated Loans [Line Items]
Unpaid principal balance	510
Recorded investment	510
Allowance for credit losses
Construction and land [Member]
Schedule of Individually Evaluated Loans [Line Items]
Unpaid principal balance	1,120
Recorded investment	1,120
Allowance for credit losses	532
Home Loans and Lines of Credit [Member]
Schedule of Individually Evaluated Loans [Line Items]
Unpaid principal balance	81	148
Recorded investment	81	148
Allowance for credit losses

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