COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Marketable Equity Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Marketable equity securities - short-term	$ 1,123	$ 2,560
Marketable equity securities - long-term	3,026	2,360
Total marketable equity securities	$ 4,149	$ 4,920

Amount of investment in marketable security.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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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
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-SubTopic 10
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Amount of investment in marketable security, classified as noncurrent.

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