Significant Accounting Policies - Schedule of Anti-dilutive Securities Excluded from Computation of Net Loss Per Share (Detail) - shares shares in Thousands	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive potentially outstanding common shares	173	137
Stock Options [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive potentially outstanding common shares	33	61
Restricted Stock Units And Deferred Stock Units [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive potentially outstanding common shares	98	61
Performance Stock Units [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive potentially outstanding common shares	42	15