Annual report pursuant to Section 13 and 15(d)

INVESTMENTS - Non-Current Investments (Details)

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INVESTMENTS - Non-Current Investments (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Sep. 30, 2016
Non-current investments [Abstract]    
Equity and fixed income mutual funds $ 21,649 $ 19,790
Other investments 16,018 11,575
Total non-current investments $ 37,667 $ 31,365