LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of troubled debt restructurings) (Details) $ in Thousands	9 Months Ended
Jun. 30, 2017 USD ($) N
Number of Loans \| N	1
Investment Before TDR Modification	$ 182
Investment After TDR Modification	$ 182
One-to four-family residential [Member]
Number of Loans \| N	1
Investment Before TDR Modification	$ 182
Investment After TDR Modification	$ 182

Number of financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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