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INVESTMENT IN MARKETABLE SECURITIES (Details Textual) - USD ($)
12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss $ 13,294,000 $ 3,620,000
Percentage Of Investment Marketable Securities 28.00% 65.00%