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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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