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Revenue Recognition (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Total net revenue $ 2,372,000 $ 607,000 $ 5,599,000 $ 2,735,000
U.S.        
Total net revenue 2,024,000 183,000 5,025,000 2,380,000
Rest-of-the-World        
Total net revenue $ 348,000 $ 124,000 $ 574,000 $ 355,000