Description of Business and Basis of Presentation (Details)	12 Months Ended
	May 03, 2015	Apr. 27, 2014	May 01, 2016
Description of Business and Basis of Presentation [Line Items]
Fiscal period duration	371 days	365 days
Minimum
Description of Business and Basis of Presentation [Line Items]
Digital signal speed	0.125
Digital signal distance	10
Number of high-speed optical channels	50
Maximum
Description of Business and Basis of Presentation [Line Items]
Digital signal speed	12.5
Digital signal distance	2,000
Number of high-speed optical channels	100
Forecast
Description of Business and Basis of Presentation [Line Items]
Fiscal period duration			365 days