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Investments (Tables)
6 Months Ended
Jul. 28, 2012
Investments [Abstract]  
Components of Investments
    July 28, 2012 January 28, 2012
Marketable securities:     
         
 Available-for-sale securities:     
  Auction rate securities - student loan backed$ 4,787 $ 84,650
  Auction rate securities - municipal authority bonds  15,323   14,858
   Total available-for-sale securities  20,110   99,508
         
Rabbi Trust assets: (1)     
 Money market funds  22   23
 Trust-owned life insurance policies (at cash surrender value)  86,799   85,126
   Total Rabbi Trust assets  86,821   85,149
   Total Investments$ 106,931 $ 184,657
         
(1) Rabbi Trust assets are included in Other Assets on the Consolidated Balance Sheets and are restricted as to their use.
 
The par and carrying values, and related cumulative impairment charges for the marketable securities
           
      Other-than-   
      Temporary  Carrying
(in thousands)Par Value Impairment  Value
           
Available-for-sale securities:        
 Auction rate securities - student loan backed$ 5,200 $(413) $ 4,787
 Auction rate securities - municipal authority bonds  19,975  (4,652)   15,323
  Total available-for-sale securities$ 25,175 $ (5,065) $ 20,110