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Stock-Based Compensation - Schedule of Activity Related to RSUs (Detail 1) - RSUs
6 Months Ended
Dec. 31, 2016
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding, June 30, 2016 873,854
Granted 223,108
Vested (106,977)
Forfeited (22,130)
Outstanding, December 31, 2016 967,855
Weighted-average grant date fair value for RSUs | $ / shares $ 101.52