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Segment Geographic and Significant Customer Information - Significant Customers (Detail) - Net Revenue - Customer Concentration Risk
3 Months Ended 6 Months Ended
Oct. 28, 2016
Oct. 30, 2015
Oct. 28, 2016
Oct. 30, 2015
Arrow Electronics, Inc.        
Segment Reporting Information [Line Items]        
Percentage of net revenues 23.00% 22.00% 21.00% 22.00%
Avnet, Inc.        
Segment Reporting Information [Line Items]        
Percentage of net revenues 20.00% 19.00% 20.00% 18.00%