INVESTMENT IN MARKETABLE SECURITIES (Details Textual) - USD ($)	9 Months Ended	12 Months Ended
Mar. 31, 2018	Jun. 30, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	$ 16,787,000	$ 13,294,000
Percentage Of Investment Marketable Securities	14.00%	28.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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