Stock-Based Compensation (Allocation of Stock-Based Compensation) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 28, 2012	Oct. 30, 2011	Oct. 28, 2012	Oct. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, pre-tax	$ 6,482	$ 5,041	$ 16,727	$ 17,149
Net change in stock-based compensation capitalized into inventory	63	34	79	(8)
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, pre-tax	313	238	841	712
Selling, General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, pre-tax	3,970	2,757	9,852	11,041
Product Development and Engineering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, pre-tax	$ 2,199	$ 2,046	$ 6,034	$ 5,396