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Debt (Details) - USD ($)
Aug. 09, 2017
Feb. 02, 2019
Feb. 03, 2018
Debt      
Total debt   $ 60,044,000 $ 65,286,000
Less: current portion   (5,263,000) (5,202,000)
Total long-term debt   54,781,000 60,084,000
Base rate      
Debt      
Variable rate basis Base rate    
Base rate | Minimum      
Debt      
Interest rate margin (as a percent) 0.125%    
Base rate | Maximum      
Debt      
Interest rate margin (as a percent) 0.375%    
Adjusted LIBOR rate      
Debt      
Variable rate basis Adjusted LIBOR rate    
Adjusted LIBOR rate | Minimum      
Debt      
Interest rate margin (as a percent) 1.125%    
Adjusted LIBOR rate | Maximum      
Debt      
Interest rate margin (as a percent) 1.375%    
Revolving Credit Facility      
Debt      
Total debt   0 0
Term of Credit Facility 5 years    
Credit Facility borrowing capacity $ 1,250,000,000    
Adjusted availability of borrowing base (as a percent) 7.50%    
Borrowings under Credit Facility   0 0
Total borrowing capacity   1,233,869,000 1,233,869,000
Revolving Credit Facility | Maximum      
Debt      
Credit Facility borrowing capacity extension $ 350,000,000    
Term loan      
Debt      
Total debt   56,085,000 60,608,000
Letters of credit      
Debt      
Letters of credit maximum $ 150,000,000    
Letters of credit outstanding   16,131,000 16,131,000
Capital lease obligation      
Debt      
Total debt   3,941,000 4,570,000
Other debt      
Debt      
Total debt   $ 18,000 $ 108,000