| 
           Commitments and Contingencies - Additional Information (Detail) (USD $) 
        In Thousands, unless otherwise specified  | 
        3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
| 
           Nov. 02, 2013 
         | 
        
           Oct. 27, 2012 
         | 
        
           Nov. 02, 2013 
         | 
        
           Oct. 27, 2012 
         | 
      |
| Commitments And Contingencies Disclosure [Abstract] | ||||
| Non-cancelable operating lease terms, minimum | 3 years | |||
| Non-cancelable operating lease terms, maximum | 10 years | |||
| Total rent expense under operating leases | $ 36,897 | $ 29,708 | $ 102,837 | $ 83,415 | 
| X | ||||||||||
| 
             
- Definition 
          Non cancelable operating lease terms maximum. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Non cancelable operating lease terms minimum. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Details 
          
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available. 
  |