XML 14 R46.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurements (Details 3) (USD $)
3 Months Ended 9 Months Ended
Oct. 27, 2012
Oct. 29, 2011
Oct. 27, 2012
Oct. 29, 2011
Jan. 28, 2012
Available-for-sale securities          
Accumulated unrealized gains, net of taxes, included in accumulated other comprehensive income $ 200,000   $ 200,000   $ 0
Asset Impairment Charge          
Charges related to asset impairments 3,600,000 700,000 3,700,000 2,900,000  
Corporate bonds
         
Available-for-sale securities          
Available-for-sale securities, included in short-term investments and other assets depending on their respective maturity dates 15,900,000   15,900,000   15,700,000
Maturity date January 2013   January 2013    
Maturity date September 2014   September 2014    
Marketable equity securities
         
Available-for-sale securities          
Available-for-sale securities, included in short-term investments and other assets depending on their respective maturity dates 500,000   500,000   500,000
Certificates of deposit
         
Available-for-sale securities          
Available-for-sale securities, included in short-term investments and other assets depending on their respective maturity dates $ 1,800,000   $ 1,800,000    
Maturity date May 31, 2013   May 31, 2013