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Fair Value Measurements (Details Textual) (USD $)
12 Months Ended
Feb. 03, 2012
Jan. 28, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Maturity Period Of Cash Equivalents 90  
Cost-method Investments, Aggregate Carrying Amount $ 12,000,000 $ 15,000,000
Impaired Security
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Available-for-sale Securities, Amortized Cost Basis $ 0