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Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Jan. 31, 2022
USD ($)
Jan. 31, 2021
USD ($)
Location
Jan. 31, 2020
USD ($)
Location
Summary Of Significant Accounting Policies [Line Items]      
Amortization expense $ 8,224 $ 6,609 $ 3,051
Impairment charges   15,496 14,611
Goodwill   $ 101,836 $ 51,900
Number of retail locations | Location   42 8
Goodwill impairment     $ 13,911
Lessee, operating lease, description Store leases have remaining lease terms that range from less than one year up to 15 years    
Lessee, operating lease, existence of option to extend true    
Lessee, operating lease, option to extend one or two 5-year periods    
Payment terms of customers 30 days    
Sales return reserve $ 69,817 $ 82,004 51,360
Foreign currency translation losses (5,254) 11,378 (1,403)
Accumulated Other Comprehensive Income (Loss)      
Summary Of Significant Accounting Policies [Line Items]      
Foreign currency translation losses 22,204 16,950  
Unrealized gains (losses) on marketable securities, net of tax (2,626) (170)  
Change in unrealized gains (losses) on marketable securities, tax (1,249) (236) 202
Selling, General and Administrative Expenses      
Summary Of Significant Accounting Policies [Line Items]      
Advertising expense 254,073 184,465 161,879
Web creative expenses 59,746 44,562 $ 45,849
Prepaid Expense and Other Current Assets      
Summary Of Significant Accounting Policies [Line Items]      
Advertising costs reported as prepaid expenses $ 1,306 $ 408  
Minimum      
Summary Of Significant Accounting Policies [Line Items]      
Lessee, operating lease, term of contract 1 year    
Maximum      
Summary Of Significant Accounting Policies [Line Items]      
Lessee, operating lease, term of contract 15 years    
Leasehold Improvements      
Summary Of Significant Accounting Policies [Line Items]      
Depreciable life (in years) lesser of the lease term or useful life for leasehold improvements    
Furniture and Fixtures      
Summary Of Significant Accounting Policies [Line Items]      
Average useful life (in years) 5 years    
Building      
Summary Of Significant Accounting Policies [Line Items]      
Average useful life (in years) 39 years    
Equipment | Minimum      
Summary Of Significant Accounting Policies [Line Items]      
Average useful life (in years) 3 years    
Equipment | Maximum      
Summary Of Significant Accounting Policies [Line Items]      
Average useful life (in years) 10 years