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Summary of Significant Accounting Policies - Concentration Risk (Details) - customer
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Jun. 30, 2016
Total accounts receivable | Credit concentration risk          
Concentration of Credit and Other Risks          
Number of significant customers     1   1
Percentage of concentration risk     25.00%   18.00%
Total net revenue | Customer concentration risk          
Concentration of Credit and Other Risks          
Number of significant customers 1 0 0 0  
Percentage of concentration risk 13.00%        
Total net revenue | Customer concentration risk | Minimum          
Concentration of Credit and Other Risks          
Percentage of concentration risk   10.00% 10.00% 10.00%