FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK - Schedule of Information Regarding Derivatives (Details) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Sep. 30, 2025 |
|
| Customer Interest Rate Swaps [Member] | ||
| Classified in Other Assets: | ||
| Notional Amount | $ 37,437 | $ 43,122 |
| Average Maturity (Years) | 3 years 7 months 6 days | 3 years 7 months 6 days |
| Weighted Average Fixed Rate | 6.21% | 5.75% |
| Weighted Average Variable Rate | 1 Mo. SOFR + 2.70 | 1 Mo. SOFR + 2.66 |
| Fair Value | $ 685 | $ 911 |
| Classified in Other Assets [Member] | ||
| Classified in Other Assets: | ||
| Notional Amount | $ 37,437 | $ 43,122 |
| Average Maturity (Years) | 3 years 7 months 6 days | 3 years 7 months 6 days |
| Weighted Average Fixed Rate | 6.21% | 5.75% |
| Fair Value | $ 685 | $ 911 |
| 3rd Party Interest Rate swaps [Member] | ||
| Classified in Other Assets: | ||
| Notional Amount | $ 37,437 | $ 43,122 |
| Average Maturity (Years) | 3 years 7 months 6 days | 3 years 7 months 6 days |
| Weighted Average Fixed Rate | 6.21% | 5.75% |
| Weighted Average Variable Rate | 1 Mo. SOFR + 2.70 | 1 Mo. SOFR + 2.66 |
| Fair Value | $ 685 | $ 911 |
| Classified in Other Liabilities [Member] | ||
| Classified in Other Assets: | ||
| Notional Amount | $ 37,437 | $ 43,122 |
| Average Maturity (Years) | 3 years 7 months 6 days | 3 years 7 months 6 days |
| Weighted Average Fixed Rate | 6.21% | 5.75% |
| Fair Value | $ 685 | $ 911 |