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Stock-Based Compensation - Summary of the Stock Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2020
Jun. 30, 2019
Number of Shares    
January 1, 2020 (in shares) 4,458,611  
Granted (in shares) 0  
Exercised (in shares) (129,082)  
Canceled (in shares) (21,520)  
Outstanding at March 31, 2020 (in shares) 4,308,009  
Exercisable at March 31, 2020 (in shares) 2,776,009  
Weighted Average Exercise Price    
January 1, 2020 (in usd per share) $ 12.30  
Granted (in usd per share) 0  
Exercised (in usd per share) 5.16  
Canceled (in usd per share) 10.99  
Outstanding at March 31, 2020 (in usd per share) 12.53  
Exercisable at March 31, 2020 (in usd per share) $ 7.64  
Weighted Average Remaining Contractual Term (Years)    
January 1, 2019 5 years 6 months 18 days 5 years 9 months 18 days
Outstanding at March 31, 2020 5 years 6 months 18 days 5 years 9 months 18 days
Exercisable at March 31, 2020 5 years 6 months 18 days  
Aggregate Intrinsic Value (in thousands)    
January 1, 2020 $ 115,501  
Exercised 4,900  
Outstanding at March 31, 2020 119,352  
Exercisable at March 31, 2020 $ 90,481