Segment Geographic and Significant Customer Information - Significant Customers (Detail) (Net Revenue)	3 Months Ended				6 Months Ended
	Oct. 25, 2013		Oct. 26, 2012		Oct. 25, 2013		Oct. 26, 2012
Arrow Electronics, Inc.
Segment Reporting Information [Line Items]
Percentage of net revenues	23.00%	[1]	21.00%	[1]	22.00%	[1]	19.00%	[1]
Avnet, Inc.
Segment Reporting Information [Line Items]
Percentage of net revenues	16.00%	[1]	15.00%	[1]	16.00%	[1]	15.00%	[1]

[1] Net revenues for Arrow Electronics, Inc. for the three and six months ended October 26, 2012 have been corrected from 20% and 18%, respectively, previously disclosed to 21% and 19%, respectively. Net revenues for Avnet, Inc. for the six months ended October 26, 2012 have been corrected from 14% previously disclosed to 15%.