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Derivative Financial Instruments (Details) (Foreign Exchange Forward [Member], USD $)
In Thousands
Jul. 31, 2010
Designated as Hedging Instrument [Member]
Other current assets [Member]
Jul. 31, 2010
Designated as Hedging Instrument [Member]
Accrued expenses and other current liabilities [Member]
Jul. 30, 2011
Not Designated as Hedging Instrument [Member]
Other current assets [Member]
Jan. 29, 2011
Not Designated as Hedging Instrument [Member]
Other current assets [Member]
Jul. 30, 2011
Not Designated as Hedging Instrument [Member]
Accrued expenses and other current liabilities [Member]
Jan. 29, 2011
Not Designated as Hedging Instrument [Member]
Accrued expenses and other current liabilities [Member]
Fair Value of Derivative Financial Instruments            
Asset, Fair Value $ 155   $ 89 $ 361    
Liabilities, Fair Value   $ 60     $ 362 $ 35