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Business Organization and Summary of Significant Accounting Policies - Inventories (Details)
12 Months Ended
Feb. 02, 2019
Feb. 03, 2018
CHINA | Geographic Concentration Risk | Cost of Goods    
Concentration Risk [Line Items]    
Percentage of purchases and merchandise risk 48.00% 52.00%
One Supplier | Supplier Concentration Risk    
Concentration Risk [Line Items]    
Percentage of purchases and merchandise risk 23.00% 23.00%