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Accumulated Unrealized Gains (Losses) - (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Feb. 02, 2013
Jan. 28, 2012
Short-Term Debt Investments
   
ScheduleOfAvailableForSaleSecuritiesLineItems    
Unrealized Gain / (Loss) $ 990 $ 1,200
Deferred Tax Benefit (372) (451)
Unrealized Net Gain / (Loss) 618 749
Equity Investments
   
ScheduleOfAvailableForSaleSecuritiesLineItems    
Unrealized Gain / (Loss) 326 300
Deferred Tax Benefit (123) (113)
Unrealized Net Gain / (Loss) $ 203 $ 187