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FAIR VALUE DISCLOSURES (Schedule of the Carrying Amount, Fair Value, and Placement in the Fair Value Hierarchy of Financial Instruments) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Sep. 30, 2020
--- | --- | ---
Financial instruments - assets |  |
Investment securities held-to-maturity | $ 40,797 | $ 30,443
Fair Value, Inputs, Level 1 [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity |  |
Loans |  |
Financial instruments - liabilities |  |
Certificates of deposit |  |
Borrowings |  |
Fair Value, Inputs, Level 2 [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity | 40,484 | 30,899
Loans |  |
Financial instruments - liabilities |  |
Certificates of deposit | 117,727 | 128,590
Borrowings | 46,550 | 68,386
Fair Value, Inputs, Level 3 [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity |  |
Loans | 627,951 | 617,418
Financial instruments - liabilities |  |
Certificates of deposit |  |
Borrowings |  |
Carrying Value [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity | 40,797 | 30,443
Loans | 616,975 | 603,110
Financial instruments - liabilities |  |
Certificates of deposit | 116,049 | 126,375
Borrowings | 45,881 | 67,410
Fair Value [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity | 40,484 | 30,899
Loans | 627,951 | 617,418
Financial instruments - liabilities |  |
Certificates of deposit | 117,727 | 128,590
Borrowings | $ 46,550 | $ 68,386

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