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Segment Information and Enterprise Reporting - Analysis of Product Revenues Based upon Geographic Area Shipped (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 28, 2020 | Mar. 30, 2019
Revenue, Major Customer [Line Items] |  |
Product revenue | $ 269,625 | $ 230,548
Concentration Risk, Percentage | 100.00% | 100.00%
United States (U.S.) | Reportable Geographical Components |  |
Revenue, Major Customer [Line Items] |  |
Product revenue | $ 189,519 | $ 156,668
Concentration Risk, Percentage | 70.30% | 68.00%
Europe, Middle East and Africa | Reportable Geographical Components |  |
Revenue, Major Customer [Line Items] |  |
Product revenue | $ 54,357 | $ 48,472
Concentration Risk, Percentage | 20.20% | 21.00%
Asia and Australia | Reportable Geographical Components |  |
Revenue, Major Customer [Line Items] |  |
Product revenue | $ 19,312 | $ 18,118
Concentration Risk, Percentage | 7.20% | 7.90%
North and South America (excluding the U.S.) | Reportable Geographical Components |  |
Revenue, Major Customer [Line Items] |  |
Product revenue | $ 6,437 | $ 7,290
Concentration Risk, Percentage | 2.30% | 3.10%

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