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COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Schedule of investments) (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Marketable equity securities – short-term $ 755 $ 1,295
Marketable equity securities – long-term 1,779 1,704
Total Marketable equity securities $ 2,534 $ 2,999