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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. 27, 2017 | Oct. 28, 2016 | Oct. 27, 2017 | Oct. 28, 2016
Arrow Electronics, Inc. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Percentage of net revenues | 22.00% | 23.00% | 23.00% | 21.00%
Tech Data Corporation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Percentage of net revenues | 19.00% | 20.00% | 20.00% | 20.00%

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