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Share Repurchases (Tables)
12 Months Ended
Aug. 03, 2012
Share Repurchases [Abstract]  
Summary of share repurchases
The following table summarizes our share repurchases for the last three years:

   
2012
  
2011
  
2010
 
Shares of common stock repurchased
  265,538   676,600   1,352,000 
Cost of shares repurchased
 $14,923  $33,563  $62,487