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INVESTMENT SECURITIES (Summary of Amortized Cost and Fair Values of Securities Available For Sale) (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Sep. 30, 2017
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 24,197 | $ 11,982
Gross Unrealized Gains | 83 | 9
Gross Unrealized Losses | (572) | (176)
Fair Value | 23,708 | 11,815
Obligations of U.S. government enterprises Mortgage-backed securities-residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 1,519 |
Gross Unrealized Gains | 54 |
Gross Unrealized Losses |  |
Fair Value | 1,573 |
Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 20,163 | 9,442
Gross Unrealized Gains | 29 | 9
Gross Unrealized Losses | (453) | (125)
Fair Value | 19,739 | 9,326
Obligations of U.S. government-sponsored enterprises Debt securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 2,500 | 2,500
Gross Unrealized Gains |  |
Gross Unrealized Losses | (119) | (51)
Fair Value | 2,381 | 2,449
Private label mortgage-backed securities-residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 15 | 40
Gross Unrealized Gains |  |
Gross Unrealized Losses |  |
Fair Value | $ 15 | $ 40

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