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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of ALL by Loan Category) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Sep. 30, 2020
--- | --- | ---
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | $ 7,554 | $ 6,400
Individually evaluated for impairment | 39 | 221
Collectively evaluated for impairment | 7,515 | 6,179
Balance - Loans receivable | 626,323 | 611,259
Loan balance individually evaluated for impairment | 12,512 | 14,161
Loan balance collectively evaluated for impairment | 613,811 | 597,098
One-to four-family residential [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 1,127 | 1,035
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 1,127 | 1,035
Balance - Loans receivable | 208,656 | 210,360
Loan balance individually evaluated for impairment | 2,367 | 2,601
Loan balance collectively evaluated for impairment | 206,289 | 207,649
Commercial real estate [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 3,709 | 3,232
Individually evaluated for impairment | 10 | 46
Collectively evaluated for impairment | 3,699 | 3,186
Balance - Loans receivable | 275,678 | 248,134
Loan balance individually evaluated for impairment | 3,676 | 4,405
Loan balance collectively evaluated for impairment | 272,002 | 243,729
Construction [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 448 | 672
Individually evaluated for impairment | 29 | 175
Collectively evaluated for impairment | 419 | 497
Balance - Loans receivable | 22,495 | 28,242
Loan balance individually evaluated for impairment | 4,580 | 5,141
Loan balance collectively evaluated for impairment | 17,915 | 23,211
Home equity lines of credit [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 257 | 179
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 257 | 179
Balance - Loans receivable | 17,621 | 19,373
Loan balance individually evaluated for impairment |  |
Loan balance collectively evaluated for impairment | 17,621 | 19,373
Commercial business [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 1,752 | 1,034
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 1,752 | 1,034
Balance - Loans receivable | 98,127 | 100,993
Loan balance individually evaluated for impairment | 1,889 | 2,014
Loan balance collectively evaluated for impairment | 96,238 | 98,979
Other [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 1 | 1
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 1 | 1
Balance - Loans receivable | 3,746 | 4,157
Loan balance individually evaluated for impairment |  |
Loan balance collectively evaluated for impairment | 3,746 | 4,157
Unallocated [Member] |  |
Allowance for Loan Losses: |  |
Balance - Allowance for loans losses | 260 | 247
Individually evaluated for impairment |  |
Collectively evaluated for impairment | 260 | 247
Balance - Loans receivable |  |
Loan balance individually evaluated for impairment |  |
Loan balance collectively evaluated for impairment |  |

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