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INVESTMENT SECURITIES (Summary of Amortized Cost and Fair Values of Securities Available For Sale) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Sep. 30, 2020
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 14,509 | $ 14,442
Gross Unrealized Gains | 32 | 125
Gross Unrealized Losses | (282) | (6)
Fair Value | 14,259 | 14,561
Obligations of U.S. government enterprises Mortgage-backed securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 242 | 350
Gross Unrealized Gains | 11 | 14
Gross Unrealized Losses |  |
Fair Value | 253 | 364
Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 14,267 | 9,092
Gross Unrealized Gains | 21 | 108
Gross Unrealized Losses | (282) | (6)
Fair Value | $ 14,006 | 9,194
Obligations of U.S. government-sponsored enterprises Debt securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost |  | 5,000
Gross Unrealized Gains |  | 3
Gross Unrealized Losses |  |
Fair Value |  | $ 5,003

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