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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Components of Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Sep. 30, 2017
Accounting Policies [Abstract]    
Available-for-sale investments $ (544) $ (106)
Defined benefit pension plan (930) (898)
Total accumulated other comprehensive loss $ (1,474) $ (1,004)