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	Apr. 29, 2017	Jan. 28, 2017	Apr. 30, 2016
Derivative [Line Items]
Derivative, Notional Amount	$ 43,290	$ 42,088	$ 47,751
U.S. dollars (purchased by the Company's Canadian division with Canadian dollars) [Member]
Derivative [Line Items]
Derivative, Notional Amount	20,813	18,826	15,767
Euro
Derivative [Line Items]
Derivative, Notional Amount	16,446	13,297	15,182
Chinese yuan
Derivative [Line Items]
Derivative, Notional Amount	4,476	7,723	14,066
Japanese yen
Derivative [Line Items]
Derivative, Notional Amount	416	769	1,152
United Arab Emirates dirham
Derivative [Line Items]
Derivative, Notional Amount	528	823	900
New Taiwanese dollars
Derivative [Line Items]
Derivative, Notional Amount	545	526	514
Other currencies
Derivative [Line Items]
Derivative, Notional Amount	$ 66	$ 124	$ 170