INVESTMENT IN MARKETABLE SECURITIES (Details 1) - USD ($)	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Debt and Equity Securities, FV-NI [Line Items]
Realized loss on marketable securities related to Comstock	$ (6,007,000)	$ 0
Realized gain on marketable securities	632,000	356,000
Unrealized loss on marketable securities related to Comstock	(2,337,000)	(4,517,000)
Unrealized gain on marketable securities	5,935,000	665,000
Net loss on marketable securities	$ (1,777,000)	$ (3,496,000)