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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of ALL by Loan Category) (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Sep. 30, 2019
--- | --- | ---
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | $ 6,000 | $ 4,888
Individually evaluated for impairment | 221 |
Collectively evaluated for impairment | 5,779 | 4,888
Balance - Loans receivable | 612,469 | 523,001
Loan balance individually evaluated for impairment | 11,959 | 10,354
Loan balance collectively evaluated for impairment | 600,510 | 512,647
One-to four-family residential [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 1,069 | 731
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 1,069 | 731
Balance - Loans receivable | 213,415 | 190,415
Loan balance individually evaluated for impairment | 2,170 | 1,405
Loan balance collectively evaluated for impairment | 211,245 | 189,010
Commercial real estate [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 2,617 | 2,066
Individually evaluated for impairment | 46 |
Collectively evaluated for impairment | 2,571 | 2,066
Balance - Loans receivable | 249,148 | 232,544
Loan balance individually evaluated for impairment | 3,322 | 4,593
Loan balance collectively evaluated for impairment | 245,826 | 227,951
Construction [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 687 | 511
Individually evaluated for impairment | 175 |
Collectively evaluated for impairment | 512 | 511
Balance - Loans receivable | 23,350 | 28,451
Loan balance individually evaluated for impairment | 5,141 | 2,900
Loan balance collectively evaluated for impairment | 18,209 | 25,551
Home equity lines of credit [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 182 | 138
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 182 | 138
Balance - Loans receivable | 20,821 | 17,832
Loan balance individually evaluated for impairment |  |
Loan balance collectively evaluated for impairment | 20,821 | 17,832
Commercial business [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 1,261 | 1,184
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 1,261 | 1,184
Balance - Loans receivable | 101,081 | 48,769
Loan balance individually evaluated for impairment | 1,326 | 1,456
Loan balance collectively evaluated for impairment | 99,755 | 47,313
Other [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 1 | 8
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 1 | 8
Balance - Loans receivable | 4,654 | 4,990
Loan balance individually evaluated for impairment |  |
Loan balance collectively evaluated for impairment | 4,654 | 4,990
Unallocated [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 183 | 250
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 183 | 250
Balance - Loans receivable |  |
Loan balance individually evaluated for impairment |  |
Loan balance collectively evaluated for impairment |  |

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