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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 | Mar. 31, 2022 | Sep. 30, 2021
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | $ 618,452 | $ 594,617
Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 609,411 | 577,729
Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 1,191 | 7,691
Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 7,850 | 9,197
Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
One-to four-family residential [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 206,083 | 203,019
One-to four-family residential [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 204,314 | 200,510
One-to four-family residential [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 991 | 1,002
One-to four-family residential [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 778 | 1,507
One-to four-family residential [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Commercial real estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 317,665 | 280,848
Commercial real estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 316,322 | 272,408
Commercial real estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 200 | 6,679
Commercial real estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 1,143 | 1,761
Commercial real estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 26,847 | 20,350
Construction [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 22,267 | 15,770
Construction [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Construction [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 4,580 | 4,580
Construction [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Home equity lines of credit [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 15,623 | 17,930
Home equity lines of credit [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 15,623 | 17,930
Home equity lines of credit [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Home equity lines of credit [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Home equity lines of credit [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Commercial business [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 48,942 | 68,719
Commercial business [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 47,593 | 67,360
Commercial business [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  | 10
Commercial business [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 1,349 | 1,349
Commercial business [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 3,292 | 3,751
Other [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross | 3,292 | 3,751
Other [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Other [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |
Other [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans and Leases Receivable, Gross |  |

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