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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
Jan. 30, 2021
Aug. 01, 2020
Aug. 04, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Refund reserve $ 9,000 $ 5,000  
Operating lease, right-of-use assets 130,291 132,615  
Current operating lease liabilities 25,718 24,333  
Noncurrent operating lease liabilities 134,341 $ 140,175  
Accounting Standards Update 2016-02      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Operating lease, right-of-use assets     $ 133,000
Deferred rent previously recorded     25,700
Current operating lease liabilities     22,000
Noncurrent operating lease liabilities     $ 136,700
Prepaid Expenses and Other Current Assets      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Interest receivable $ 1,000