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COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Inventory) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials/purchased components $ 4,113 $ 3,132
Work in process 2,574 1,511
Sub-assemblies/finished components 1,662 1,524
Finished goods 294 72
Total inventory $ 8,643 $ 6,239