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STOCKHOLDERS' DEFICIT (Details)
 9 Months Ended
Mar. 31, 2017
$ / shares
shares
Jun. 30, 2016
$ / shares
shares
Class A Common Stock    
Class of Stock [Line Items]    
Common stock, shares outstanding | shares 50,706,518 45,995,528
Common stock, par value (in dollars per share) | $ / shares $ 0.01 $ 0.01
Voting rights, ratio of votes to shares held 1  
Class B Common Stock    
Class of Stock [Line Items]    
Common stock, shares outstanding | shares 88,407,103 96,132,723
Common stock, par value (in dollars per share) | $ / shares $ 0.000001 $ 0.000001
Voting rights, ratio of votes to shares held 1