Segment Geographic and Significant Customer Information - Schedule of Net Accounts Receivable from Significant Customers (Detail)	Jul. 26, 2013	Apr. 26, 2013
Arrow Electronics, Inc.
Segment Reporting Information [Line Items]
Percentage of net accounts receivable	13.00%	16.00%
Avnet, Inc.
Segment Reporting Information [Line Items]
Percentage of net accounts receivable	11.00%	14.00%