FAIR VALUE MEASUREMENTS (Details) - USD ($)	Dec. 31, 2015	Jun. 30, 2015
Assets:
Investment in marketable securities	$ 16,005,000	$ 5,827,000
Assets, Fair Value Disclosure	16,021,000	5,931,000
Fair Value, Measurements, Recurring [Member]
Assets:
Other investments - warrants	16,000	104,000
Investment in marketable securities	16,005,000	5,827,000
Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure	16,005,000	5,827,000
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Other investments - warrants	0	0
Investment in marketable securities	16,005,000	5,827,000
Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Other investments - warrants	0	0
Investment in marketable securities	0	0
Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure	16,000	104,000
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Other investments - warrants	16,000	104,000
Investment in marketable securities	0	0
Basic Materials [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	10,938,000	2,761,000
Basic Materials [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	10,938,000	2,761,000
Basic Materials [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	0	0
Basic Materials [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	0	0
Oil, Gas and Energy [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	1,769,000
Oil, Gas and Energy [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	1,769,000
Oil, Gas and Energy [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	0
Oil, Gas and Energy [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	0
Other [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	3,298,000	3,066,000
Other [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	3,298,000	3,066,000
Other [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	0	0
Other [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26626-111562

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.4)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Trading Securities
-URI http://asc.fasb.org/extlink&oid=6526789

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