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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of Classes of the Loan Portfolio Summarized by Bank's Internal Risk Rating System) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Sep. 30, 2018
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | $ 514,438 | $ 512,498
Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 509,428 | 510,384
Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 750 | 753
Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 4,260 | 1,361
Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
One-to four-family residential [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 186,328 | 185,287
One-to four-family residential [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 186,152 | 185,118
One-to four-family residential [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
One-to four-family residential [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 176 | 169
One-to four-family residential [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 223,146 | 219,347
Commercial real estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 221,745 | 217,935
Commercial real estate [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 750 | 753
Commercial real estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 651 | 659
Commercial real estate [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Construction [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 31,287 | 30,412
Construction [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 28,387 | 30,412
Construction [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Construction [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 2,900 |
Construction [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 18,518 | 17,982
Home equity lines of credit [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 18,460 | 17,924
Home equity lines of credit [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Home equity lines of credit [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 58 | 58
Home equity lines of credit [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Commercial business [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 49,842 | 53,320
Commercial business [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 49,367 | 52,845
Commercial business [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Commercial business [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 475 | 475
Commercial business [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Other [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 5,317 | 6,150
Other [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross | 5,317 | 6,150
Other [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Other [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Other [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and Leases Receivable, Gross |  |

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