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Property and equipment (Tables)
12 Months Ended
Feb. 02, 2013
Property and Equipment [Abstract]  
Summary of Property and equipment
                 
    February 2,
2013
    January 28,
2012
 

Equipment

  $ 44,514     $ 28,981  

Furniture and fixtures

    53,405       47,218  

Leasehold improvements

    74,203       67,802  

Projects in progress

    795       8,419  
   

 

 

   

 

 

 
      172,917       152,420  

Less: Accumulated depreciation

    94,418       92,105  
   

 

 

   

 

 

 
    $ 78,499     $ 60,315