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Segment Geographic and Significant Customer Information - Schedule of Net Accounts Receivable from Significant Customers (Detail) - Accounts Receivable - Credit Concentration Risk
3 Months Ended 12 Months Ended
Jul. 29, 2016
Apr. 29, 2016
Arrow Electronics, Inc.    
Segment Reporting Information [Line Items]    
Percentage of net accounts receivable 12.00% 12.00%
Avnet, Inc.    
Segment Reporting Information [Line Items]    
Percentage of net accounts receivable 11.00% 15.00%