FAIR VALUE MEASUREMENTS (Details) - USD ($)	Dec. 31, 2016	Jun. 30, 2016
Assets:
Investment in marketable securities	$ 17,044,000	$ 14,282,000
Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	17,044,000	14,282,000
Basic Materials [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	7,165,000	9,273,000
Energy [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	3,318,000	1,907,000
Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	1,584,000	0
REITs and Real Estate Companies [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	1,416,000	0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	590,000	1,021,000
Other [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	$ 2,971,000	$ 2,081,000