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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of Classes of the Loan Portfolio Summarized by Aging Categories) (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Sep. 30, 2016
--- | --- | ---
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Current | $ 465,113 | $ 453,127
Total Past Due | 3,123 | 4,744
Non - Accrual | 2,295 | 4,207
Total loans receivable | 468,236 | 457,871
One-to four-family residential [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Current | 176,236 | 170,705
Total Past Due | 2,258 | 2,530
Non - Accrual | 1,643 | 2,486
Total loans receivable | 178,494 | 173,235
Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Current | 204,501 | 198,577
Total Past Due | 515 | 933
Non - Accrual | 515 | 443
Total loans receivable | 205,016 | 199,510
Construction [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Current | 17,868 | 14,939
Total Past Due |  |
Non - Accrual |  |
Total loans receivable | 17,868 | 14,939
Home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Current | 18,141 | 21,686
Total Past Due |  | 281
Non - Accrual |  | 281
Total loans receivable | 18,141 | 21,967
Commercial business [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Current | 42,152 | 37,865
Total Past Due | 338 | 1,000
Non - Accrual | 125 | 997
Total loans receivable | 42,490 | 38,865
Other [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Current | 6,215 | 9,355
Total Past Due | 12 |
Non - Accrual | 12 |
Total loans receivable | 6,227 | 9,355
30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | 341 |
30-59 Days Past Due [Member] | One-to four-family residential [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | 128 |
30-59 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  |
30-59 Days Past Due [Member] | Construction [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  |
30-59 Days Past Due [Member] | Home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  |
30-59 Days Past Due [Member] | Commercial business [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | 213 |
30-59 Days Past Due [Member] | Other [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  |
60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | 2,295 | 537
60-89 Days Past Due [Member] | One-to four-family residential [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | 487 | 44
60-89 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  | 490
60-89 Days Past Due [Member] | Construction [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Commercial business [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  | 3
60-89 Days Past Due [Member] | Other [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  |
90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | 487 | 4,207
90 Days Past Due [Member] | One-to four-family residential [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | 1,643 | 2,486
90 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | 515 | 443
90 Days Past Due [Member] | Construction [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  |
90 Days Past Due [Member] | Home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due |  | 281
90 Days Past Due [Member] | Commercial business [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | 125 | 997
90 Days Past Due [Member] | Other [Member] |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Past Due | $ 12 |

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