Risk Management And Derivatives (Schedule Of Contract Net Amount Of All Purchase And Sale Contracts Of A Foreign Currency) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 28, 2012	Jan. 28, 2012	Jul. 30, 2011
Derivative [Line Items]
Net contract amount of all purchase and sale contracts of a foreign currency	$ 58,787	$ 75,951	$ 44,302
Chinese Yuan [Member]
Derivative [Line Items]
Net contract amount of all purchase and sale contracts of a foreign currency	28,403	43,407	15,711
U.S. Dollars (Purchased By The Company's Canadian Division With Canadian Dollars) [Member]
Derivative [Line Items]
Net contract amount of all purchase and sale contracts of a foreign currency	19,937	19,002	19,002
Euro [Member]
Derivative [Line Items]
Net contract amount of all purchase and sale contracts of a foreign currency	6,626	7,293	6,027
Japanese Yen [Member]
Derivative [Line Items]
Net contract amount of all purchase and sale contracts of a foreign currency	1,392	1,365	1,219
New Taiwanese Dollars [Member]
Derivative [Line Items]
Net contract amount of all purchase and sale contracts of a foreign currency	884	830	1,163
Great Britain Pounds Sterling [Member]
Derivative [Line Items]
Net contract amount of all purchase and sale contracts of a foreign currency	210	2,947
Other Currencies [Member] | Deliverable Financial Instruments [Member]
Derivative [Line Items]
Net contract amount of all purchase and sale contracts of a foreign currency	$ 1,335	$ 1,107	$ 1,180