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COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Schedule of investments) (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Marketable equity securities - short-term $ 1,149 $ 755
Marketable equity securities - long-term 1,534 1,779
Total marketable equity securities $ 2,683 $ 2,534