Annual report pursuant to Section 13 and 15(d)

INVESTMENTS - Narrative (Details)

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INVESTMENTS - Narrative (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]    
Trading securities cost (in excess of) or below market value $ 785 $ 414
Maximum ownership interests in various entities recorded under the cost method 20.00%