Annual report pursuant to Section 13 and 15(d)

Severance and Restructuring Costs - Additional Information (Detail)

v3.21.1
Severance and Restructuring Costs - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Restructuring Cost and Reserve [Line Items]    
Severance and restructuring costs $ 1,477 $ 3,523
Total restructuring charges incurred 2 3,367
2020 Restructuring Program [Member]    
Restructuring Cost and Reserve [Line Items]    
Severance and restructuring costs   3,400
2020 Restructuring Program [Member] | Maximum [Member]    
Restructuring Cost and Reserve [Line Items]    
Total restructuring charges incurred 100  
COVID-19 [Member]    
Restructuring Cost and Reserve [Line Items]    
Severance charges 1,300  
Former Employees [Member]    
Restructuring Cost and Reserve [Line Items]    
Severance charges $ 1,500 $ 200