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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 | Jun. 30, 2017 | Sep. 30, 2016
--- | --- | ---
Financial instruments - assets |  |
Investment securities held to maturity | $ 51,073 | $ 52,934
Fair Value, Inputs, Level 1 [Member] |  |
Financial instruments - assets |  |
Investment securities held to maturity |  |
Loans |  |
Financial instruments - liabilities |  |
Certificates of deposit including retirement certificates |  |
Borrowings |  |
Fair Value, Inputs, Level 2 [Member] |  |
Financial instruments - assets |  |
Investment securities held to maturity | 50,923 | 53,849
Loans |  |
Financial instruments - liabilities |  |
Certificates of deposit including retirement certificates | 135,474 | 135,162
Borrowings | 31,898 | 36,473
Fair Value, Inputs, Level 3 [Member] |  |
Financial instruments - assets |  |
Investment securities held to maturity |  |
Loans | 467,593 | 462,868
Financial instruments - liabilities |  |
Certificates of deposit including retirement certificates |  |
Borrowings |  |
Carrying Value [Member] |  |
Financial instruments - assets |  |
Investment securities held to maturity | 51,073 | 52,934
Loans | 465,077 | 455,031
Financial instruments - liabilities |  |
Certificates of deposit including retirement certificates | 134,678 | 133,979
Borrowings | 31,905 | 36,040
Fair Value [Member] |  |
Financial instruments - assets |  |
Investment securities held to maturity | 50,923 | 53,849
Loans | 467,593 | 462,868
Financial instruments - liabilities |  |
Certificates of deposit including retirement certificates | 135,474 | 135,162
Borrowings | $ 31,898 | $ 36,473

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