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COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials /purchased components $ 1,252 $ 1,462
Work in process 813 818
Sub-assemblies /finished components 1,001 1,010
Finished goods 206 74
Total inventory $ 3,272 $ 3,364