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Property and Equipment, Net (Tables)
9 Months Ended
Oct. 29, 2011
Property and Equipment, Net [Abstract]  
Property and equipment, net
 October 29, 2011 January 29, 2011
Property and equipment, at cost$ 2,649,636 $ 2,451,414
Accumulated depreciation and amortization (1,412,206)  (1,306,474)
      
Property and equipment, net$ 1,237,430 $ 1,144,940