Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Summary of stock option activity (Detail)

v3.20.2
Stock-Based Compensation - Summary of stock option activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Share-based Payment Arrangement [Abstract]    
Number of options, beginning balance 189,269  
Number of options, granted 4,785,939  
Number of options, forfeited (719,051)  
Number of options, cancelled (382,269)  
Number of options, ending balance 3,873,888 189,269
Number of options, Exercisable 306,735  
Weighted average exercise price, beginning balance $ 4.12  
Weighted average exercise price, granted 8.30  
Weighted average exercise price, forfeited 7.23  
Weighted average exercise price, canceled 7.86  
Weighted average exercise price, ending balance 8.33 $ 4.12
Weighted average exercise price, exercisable $ 7.31  
Remaining contractual term 9 years 4 months 13 days 9 years 7 months 20 days
Remaining contractual term, exercisable 9 years 2 months 1 day  
Aggregate Intrinsic Value, beginning balance $ 707  
Aggregate Intrinsic Value, ending balance 28,029 $ 707
Aggregate Intrinsic Value, exercisable $ 2,532