Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Fair Value of Stock Options Granted (Detail)

v3.21.1
Stockholders' Equity - Fair Value of Stock Options Granted (Detail)
12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Risk-free interest rate 0.30% 1.80%
Expected volatility 62.10% 50.50%
Expected dividend yield 0.00% 0.00%
Expected term (in years) 5 years 6 months 6 years