Annual report pursuant to Section 13 and 15(d)

Operating Leases - Additional Information (Detail)

v3.20.1
Operating Leases - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Oct. 31, 2020
Feb. 01, 2019
Lessee Lease Description [Line Items]        
Operating lease right-of-use assets $ 4,860     $ 1,700
Operating lease liability 5,070     $ 1,700
Rent payments 900      
Lease cost $ 933 $ 1,200    
Scenario Forecast [Member] | Netherlands [Member]        
Lessee Lease Description [Line Items]        
Reduction in lease commitments in fiscal 2021     $ 100  
Scenario Forecast [Member] | Ireland [Member]        
Lessee Lease Description [Line Items]        
Reduction in lease commitments in fiscal 2022     $ 100