COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Marketable Equity Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Marketable equity securities - short-term	$ 3,127	$ 2,649
Marketable equity securities - long-term	1,306	582
Total marketable equity securities	$ 4,433	$ 3,231

Amount of investment in marketable security.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Amount of investment in marketable security, classified as current.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
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Amount of investment in marketable security, classified as noncurrent.

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