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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Other Items Allocated to Comprehensive Income/Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Unrealized holding gain (loss) arising during period on: |  |  |
Available-for-sale investments before tax |  | $ (293) | $ 127
Tax (benefit) expense |  | 79 | (38)
Available-for-sale investments after tax |  | (214) | 89
Reclassification adjustment for security gains included in net income before tax | [1],[2] |  | (68)
Tax (benefit) expense | [1],[2] |  | 19
Reclassification adjustment for security gains included in net income after tax | [1],[2] |  | (49)
Defined benefit pension plan before tax |  | 893 | (150)
Tax (benefit) expense |  | (269) | 83
Defined benefit pension plan after tax |  | 624 | (67)
Other comprehensive income (loss), net before tax |  | 600 | (91)
Tax (benefit) expense, Total |  | (190) | 64
Other comprehensive income (loss), net |  | $ 410 | $ (27)
[1] | Realized gains on securities transactions included in gains on sales of investment securities in the accompanying Consolidated Statements of Operations
[2] | Tax effect included in income tax expense in the accompanying Consolidated Statements of Operations

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