Derivative Financial Instruments (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Nov. 01, 2014		Nov. 02, 2013		Nov. 01, 2014		Nov. 02, 2013
Net after-tax derivative activity recorded in accumulated other comprehensive income (loss)
Beginning balance gain (loss)	$ 366		$ 1,558		$ (113)		$ (1,782)
Net gains (losses) from changes in cash flow hedges	3,805		(657)		3,099		3,495
Net (gains) losses reclassified to earnings	713		(1,086)		1,898		(1,898)
Ending balance gain (loss)	4,884		(185)		4,884		(185)
Foreign exchange currency cash flow hedge unrealized gain to be recognized in cost of product sales or other income over the following 12 months	4,884				4,884
Cash flow hedges | Cost of sales
Gains (losses) before taxes recognized on the derivative instruments designated as cash flow hedges in OCI and net earnings
Gain (loss) recognized in OCI	3,869		(694)		3,163		3,785
Gain (loss) reclassified from accumulated OCI into earnings	(800)	[1]	1,344	[1]	(1,559)	[1]	2,216	[1]
Cash flow hedges | Other income/expense
Gains (losses) before taxes recognized on the derivative instruments designated as cash flow hedges in OCI and net earnings
Gain (loss) recognized in OCI	487		(17)		381		401
Gain (loss) reclassified from accumulated OCI into earnings	$ 0	[1]	$ 4	[1]	$ (56)	[1]	$ 98	[1]

[1] The ineffective portion was immaterial during the three and nine months ended November 1, 2014 and November 2, 2013 and was recorded in net earnings and included in interest income/expense.