FAIR VALUE MEASUREMENTS (Details) - USD ($)	Mar. 31, 2016	Jun. 30, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other investments - warrants		$ 52,000
Investment in marketable securities	$ 5,899,000	1,955,000
Assets, Fair Value Disclosure		2,007,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other investments - warrants		0
Investment in marketable securities	5,899,000	1,955,000
Assets, Fair Value Disclosure		1,955,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other investments - warrants		52,000
Investment in marketable securities	0	0
Assets, Fair Value Disclosure		52,000
Basic materials [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	5,060,000	1,392,000
Basic materials [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	5,060,000	1,392,000
Basic materials [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	0	0
Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	839,000	563,000
Other [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	839,000	563,000
Other [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	$ 0	$ 0