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Long-Term Debt, Exclusive of Current Installments (Parenthetical) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 30, 2016
Jan. 31, 2015
Debt Instrument [Line Items]    
Unamortized debt discount $ 946  
6.95% Ten-Year Notes    
Debt Instrument [Line Items]    
Debt instrument, interest rate 6.95%  
Maturity date Apr. 15, 2019  
Unamortized debt discount $ 223 $ 294
Effective interest rate 6.98%  
2.50% Ten-Year Notes    
Debt Instrument [Line Items]    
Debt instrument, interest rate 2.50%  
Maturity date May 15, 2023  
Unamortized debt discount $ 323 367
Effective interest rate 2.51%  
2.75% Seven-Year Notes    
Debt Instrument [Line Items]    
Debt instrument, interest rate 2.75%  
Maturity date Jun. 15, 2021  
Unamortized debt discount $ 400 $ 475
Effective interest rate 2.76%