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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of Impaired Loans by Class) (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Sep. 30, 2015
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment With Specific Allowance | $ 1,307 | $ 1,690
Related Allowance | 95 | 201
Recorded Investment With No Specific Allowance | 9,429 | 8,947
Total Recorded Investment | 10,736 | 10,637
Total Unpaid Contractual Principal Balance | $ 12,768 | $ 11,967
One-to four-family residential [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment With Specific Allowance |  |
Related Allowance |  |
Recorded Investment With No Specific Allowance | $ 4,132 | $ 3,017
Total Recorded Investment | 4,132 | 3,017
Total Unpaid Contractual Principal Balance | $ 4,275 | $ 3,134
Commercial real estate |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment With Specific Allowance |  |
Related Allowance |  |
Recorded Investment With No Specific Allowance | $ 4,995 | $ 5,447
Total Recorded Investment | 4,995 | 5,447
Total Unpaid Contractual Principal Balance | $ 6,501 | $ 6,556
Home equity lines of credit |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment With Specific Allowance |  |
Related Allowance |  |
Recorded Investment With No Specific Allowance | $ 29 | $ 417
Total Recorded Investment | 29 | 417
Total Unpaid Contractual Principal Balance | 29 | 521
Commercial business |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment With Specific Allowance | 1,307 | 1,690
Related Allowance | 95 | 201
Recorded Investment With No Specific Allowance | 273 | 66
Total Recorded Investment | 1,580 | 1,756
Total Unpaid Contractual Principal Balance | $ 1,963 | $ 1,756

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