Income Taxes - Narrative (Details) (USD $)	3 Months Ended		12 Months Ended				3 Months Ended
	Apr. 29, 2012	Jan. 31, 2010	Jan. 27, 2013	Jan. 29, 2012	Jan. 30, 2011	Jan. 27, 2013 Internal Revenue Service (IRS)	Jul. 29, 2012 Canada Tax Authority	Jan. 27, 2013 Canada Tax Authority	Jan. 27, 2013 State and local jurisdiction
Income Tax [Line Items]
Interest and penalties expense related to unrecognized tax benefits			$ 50,000	$ 50,000
Release in reserves for uncertain tax positions			1,100,000
Operating loss carryforwards						73,700,000			86,300,000
Net operating loss carryforward deferred tax asset attributed to excess equity deductions			8,300,000
Research credits available to offset taxable income						6,000,000		34,700,000	12,300,000
Alternative minimum tax credits available						1,300,000
Unremitted earnings related to foreign subsidiaries			383,700,000
Foreign earnings no longer permanently reinvested offshore		120,000,000
Repatriated foreign subsidiary earnings		50,000,000
Unrepatriated foreign subsidiary earnings		70,000,000
Foreign earnings permanently reinvested offshore	70,000,000
One-time tax benefit	23,400,000
Percentage of uncertain tax positions evaluating criteria			50.00%
Net tax benefits, if recognized, would impact the effective tax rate			11,100,000	11,600,000
Unrecognized tax benefits, interest and penalties			293,000	243,000
Discrete charge to the Canadian tax provision as a result of newly enacted tax legislation			(39,359,000)	757,000	1,952,000		3,400,000
Reasonably possible decrease in unrecognized tax benefits within twelve months			$ 200,000