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FAIR VALUE DISCLOSURES (Narrative) (Details) $ in Thousands	12 Months Ended
FAIR VALUE DISCLOSURES (Narrative) (Details) $ in Thousands	Sep. 30, 2017 USD ($) N	Sep. 30, 2016 USD ($)
Total Unpaid Contractual Principal Balance	$ 7,789	$ 10,099
Specific loss reserves		39
Impaired Loans [Member]
Number of impaired loans \| N	4
Total Unpaid Contractual Principal Balance	$ 1,600
Cumulative write-down of impaired loans	335
Specific loss reserves	0
Commercial business [Member]
Total Unpaid Contractual Principal Balance	243	1,850
Specific loss reserves		39
Home equity lines of credit [Member]
Total Unpaid Contractual Principal Balance		167
Specific loss reserves
Commercial real estate [Member]
Total Unpaid Contractual Principal Balance	4,110	3,843
Specific loss reserves
One-to four-family residential [Member]
Total Unpaid Contractual Principal Balance	3,436	4,239
Specific loss reserves