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COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Inventory) (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials /purchased components $ 4,241 $ 3,132
Work in process 2,339 1,511
Sub-assemblies /finished components 1,438 1,524
Finished goods 220 72
Total inventory $ 8,238 $ 6,239