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Revenue Recognition (Tables)
6 Months Ended
Dec. 31, 2018
Revenue Recognition [Abstract]  
Schedule product revenues by geographic location
    Three Months Ended December 31,     Six Months Ended December 31,  
    2018     2017     2018     2017  
                         
U.S   $ 1,730,000     $ 965,000     $ 3,001,000     $ 1,897,000  
Rest-of-the-World     65,000       86,000       226,000       231,000  
Total net revenue   $ 1,795,000     $ 1,051,000     $ 3,227,000     $ 2,128,000