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Risk Management and Derivatives (Schedule of Contract Notional Amount of All Purchase and Sale Contracts of a Foreign Currency) (Details) - Forward Contracts [Member] - USD ($)
$ in Thousands
Jul. 29, 2017
Jan. 28, 2017
Jul. 30, 2016
Derivative [Line Items]      
Derivative, Notional Amount $ 45,733 $ 42,088 $ 46,086
U.S. dollars (purchased by the Company's Canadian division with Canadian dollars) [Member]      
Derivative [Line Items]      
Derivative, Notional Amount 18,110 18,826 17,404
Euro      
Derivative [Line Items]      
Derivative, Notional Amount 14,725 13,297 13,544
Chinese yuan      
Derivative [Line Items]      
Derivative, Notional Amount 11,887 7,723 12,477
New Taiwanese dollars      
Derivative [Line Items]      
Derivative, Notional Amount 567 526 522
United Arab Emirates dirham      
Derivative [Line Items]      
Derivative, Notional Amount 254 823 939
Japanese yen      
Derivative [Line Items]      
Derivative, Notional Amount 176 769 1,026
Other currencies      
Derivative [Line Items]      
Derivative, Notional Amount $ 14 $ 124 $ 174