Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Stock Option Activity (Detail)

v3.21.1
Stockholders' Equity - Stock Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Equity [Abstract]    
Shares, Outstanding at beginning of period 2,768,466  
Shares, Granted 300,998  
Shares, Exercised (39,270)  
Shares, Forfeited (1,357,648)  
Shares, Outstanding at end of period 1,672,546 2,768,466
Shares, Vested and expected to vest at end of period 1,672,546  
Shares, Options exercisable at end of period 1,154,773  
Weighted Average Exercise Price, Outstanding at beginning of period $ 2.14  
Weighted Average Exercise Price, Granted 2.74  
Weighted Average Exercise Price, Exercised 3.04  
Weighted Average Exercise Price, Forfeited 2.42  
Weighted Average Exercise Price, Outstanding at end of period 2.00 $ 2.14
Weighted Average Exercise Price, Vested and expected to vest at end of period 2.00  
Weighted Average Exercise Price, Options exercisable at end of period $ 2.12  
Weighted Average Remaining Contractual Term, Outstanding at beginning of period 5 years 7 months 20 days 8 years 10 days
Weighted Average Remaining Contractual Term, Vested and expected to vest at end of period 5 years 7 months 20 days  
Weighted Average Remaining Contractual Term, Options exercisable at end of period 4 years 4 months 28 days  
Aggregate Intrinsic Value, Outstanding $ 6,430,232  
Aggregate Intrinsic Value, Outstanding   $ 6,430,232