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COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Tables)
6 Months Ended
Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of inventory
          
   December 31,
2022
   June 30,
2022
 
Raw materials/purchased components   $8,667   $6,323 
Work in process    2,622    3,463 
Sub-assemblies/finished components    1,880    2,118 
Finished goods    1,966    774 
Total inventory   $15,135   $12,678 
Schedule of investments
          
   December 31,
2022
   June 30,
2022
 
Marketable equity securities - short-term   $1,134   $755 
Marketable equity securities - long-term    1,726    1,779 
Total marketable equity securities  $2,860   $2,534 
Schedule of capital leased assets
          
   December 31,
2022
   June 30,
2022
 
Land   $3,684   $3,684 
Building    2,815    2,815 
Total    6,499    6,499 
Less: accumulated depreciation    (203)   (156)
 Land and building  $6,296   $6,343 
Schedule of intangibles
          
   December 31,
2022
   June 30,
2022
 
Patent-related costs   $208   $208 
Less accumulated amortization   (110)   (90)
   $98   $118