Quarterly report pursuant to Section 13 or 15(d)

Description of Stock Plans - Summary of Stock Option Activity (Details)

v3.19.2
Description of Stock Plans - Summary of Stock Option Activity (Details) - Stock Option - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Mar. 31, 2019
Number of Shares (in shares)      
Beginning Balance (in shares) 9,128,885    
Granted (in shares) 1,411,750 1,198,425  
Forfeited / Cancelled (in shares) (300,420)    
Exercised (in shares) (616,208)    
Ending Balance (in shares) 9,624,007    
Vested and expected to vest (net of estimated forfeitures) (in shares) 8,379,539    
Exercisable (in shares) 5,507,764    
Weighted Average Exercise Price ($ per share)      
Options outstanding (in dollars per share) $ 1.80    
Granted (in dollars per share) 3.86    
Forfeited/Cancelled (in dollars per share) 1.65    
Exercised (in dollars per share) 1.48    
Options outstanding (in dollars per share) 2.13    
Vested and expected to vest (net of estimated forfeitures) (in dollars per share) 2.10    
Exercisable (in dollars per share) $ 2.10    
Weighted Average Remaining Contractual Life (in years)      
Outstanding 7 years 5 months 3 days 7 years 3 months 21 days  
Vested and expected to vest (net of estimated forfeitures) 7 years 2 months 12 days    
Exercisable, June 30, 2019 6 years 6 months 8 days    
Aggregate Intrinsic Value (in thousands)      
Outstanding $ 27,644   $ 16,347
Vested and expected to vest (net of estimated forfeitures) 24,346    
Exercisable, June 30, 2019 $ 16,023