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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

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