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Stock Incentive Plan - (Details) - $ / shares
9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock vesting period 4 years  
Contractual terms of stock option 7 years  
Common stock reserved for possible future issuance upon exercise of stock options 15,018,665  
Stock options available for future grants 5,448,498  
Performance Units available for grant 9,570,167  
Options granted, weighted average grant date fair value $ 1.85 $ 1.00
Board Members [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Contractual terms of stock option 7 years