INVESTMENT IN MARKETABLE SECURITIES (Details Textual) - USD ($)	3 Months Ended
Sep. 30, 2018	Jun. 30, 2018
Debt and Equity Securities, FV-NI [Line Items]
Trading Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	$ 11,257,000	$ 10,819,000

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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