Special Charges (Details) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Apr. 30, 2016 USD ($)	Jan. 30, 2016 USD ($)	May. 02, 2015 USD ($)	Apr. 30, 2016 USD ($) employee	May. 02, 2015 USD ($)	Nov. 01, 2014 USD ($) employee
Summary of the Company's special charges, Income Statement
Workforce reductions			$ 13,684	$ 13,684		$ 37,900
Facility closure costs						500
Non-cash impairment charge						400
Restructuring Reserve, Translation and Other Adjustment						(1,400)
Total Charges	$ 13,684		0	13,684	$ 0	37,300
Summary of the Company's special charges and accruals related to ongoing actions, Balance Sheet
Accrued Restructuring, Beginning Balance	3,894	$ 5,877		5,877
Total Charges	13,684		0	13,684	0	37,300
Severance payments		(1,984)	(2,177)
Effect of foreign currency on accrual		1	(8)
Accrued Restructuring, Ending Balance	15,409	$ 3,894		15,409
Special Charges (Textual) [Abstract]
Total Charges	$ 13,684		$ 0	$ 13,684	$ 0	$ 37,300
Number Of Employees Still Employed Who Are Planned To Be Separated | employee				106
Reduction of Operating Costs 2014 [Member]
Special Charges (Textual) [Abstract]
Number Of Manufacturing Engineering And Selling Marketing General And Administrative Employees Related to Action | employee						341
Reduction of Operating Costs 2016 [Domain]
Special Charges (Textual) [Abstract]
Number Of Manufacturing Engineering And Selling Marketing General And Administrative Employees Related to Action | employee				123