Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Schedule of Anti-dilutive Securities Excluded from Computation of Loss Per Share (Detail)

v3.21.2
Significant Accounting Policies - Schedule of Anti-dilutive Securities Excluded from Computation of Loss Per Share (Detail) - shares
shares in Thousands
 3 Months Ended 9 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Anti-dilutive potentially outstanding common shares 1,622 3,297 1,703 1,212
Stock Options [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Anti-dilutive potentially outstanding common shares 1,287 2,643 1,542 1,072
Restricted Stock Units [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Anti-dilutive potentially outstanding common shares 273 341 120 58
Deferred Stock Units [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Anti-dilutive potentially outstanding common shares 62 313 41 82