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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Summary Of Significant Accounting Policies [Line Items]    
Opening balance $ 565 $ 559
Charged to expense 0 84
Accounts recovered 0 (25)
Accounts written off 0 (53)
Uncollected archive invoices 1,839 0
Ending balance $ 2,404 $ 565