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Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 03, 2018
Jan. 28, 2017
Tax Credit Carryforward [Line Items]    
Decrease in provision for income taxes due to new tax rate $ (0.2)  
Impact on deferred tax assets of new tax rate which offset provision for income taxes 0.5  
California    
Tax Credit Carryforward [Line Items]    
Tax credit carryovers $ 0.1 $ 0.1