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Stock-Based Compensation - Summary of Activity Related to RSUs (Detail 1) - RSUs
3 Months Ended
Sep. 30, 2019
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unvested at June 30, 2019 628,806
Granted 123,592
Vested (126,140)
Forfeited (7,006)
Unvested at September 30, 2019 619,252