Risk Management And Derivatives (Schedule Of Contract Notional Amount Of All Purchase And Sale Contracts Of A Foreign Currency) (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Jan. 31, 2015
Derivative [Line Items]
Derivative, Maturity Date	Oct. 28, 2016
Forward Contracts [Member]
Derivative [Line Items]
Derivative, Maturity Date	Oct. 28, 2016	Oct. 31, 2015	Jan. 01, 2016
Notional contract amount of all purchase and sale contracts of a foreign currency	$ 52,729	$ 52,678	$ 53,389
U.S. Dollars (Purchased By The Company's Canadian Division With Canadian Dollars) [Member] | Forward Contracts [Member]
Derivative [Line Items]
Notional contract amount of all purchase and sale contracts of a foreign currency	17,820	20,391	19,633
Euro [Member] | Forward Contracts [Member]
Derivative [Line Items]
Notional contract amount of all purchase and sale contracts of a foreign currency	16,178	14,583	16,152
Chinese Yuan [Member] | Forward Contracts [Member]
Derivative [Line Items]
Notional contract amount of all purchase and sale contracts of a foreign currency	15,828	14,659	14,512
Japanese Yen [Member] | Forward Contracts [Member]
Derivative [Line Items]
Notional contract amount of all purchase and sale contracts of a foreign currency	1,184	1,505	1,523
United Arab Emirates, Dirhams | Forward Contracts [Member]
Derivative [Line Items]
Notional contract amount of all purchase and sale contracts of a foreign currency	866	921	970
Taiwan, New Dollars | Forward Contracts [Member]
Derivative [Line Items]
Notional contract amount of all purchase and sale contracts of a foreign currency	610	619	599
Other Currencies [Member] | Forward Contracts [Member]
Derivative [Line Items]
Notional contract amount of all purchase and sale contracts of a foreign currency	$ 243	$ 0	$ 0