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Revenue Recognition (Details) - USD ($)
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Total net revenue $ 7,320,000 $ 3,660,000
U.S.    
Total net revenue 6,462,000 3,213,000
Rest-of-the-World    
Total net revenue $ 858,000 $ 447,000