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Segment Information and Enterprise Reporting (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-Lived Assets | $ 274,478 | $ 225,167 | $ 210,323
Concentration Risk, Long-lived Asset Geographic Area, Percentage | 100.00% | 100.00% | 100.00%
Product | $ 741,324 | $ 663,846 | $ 599,334
Percentage Of Product Revenue Based On Geographic Area By Destination | 100.00% | 100.00% | 100.00%
United States |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Product | $ 506,815 | $ 465,588 | $ 421,628
Europe, Middle East and Africa |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Product | $ 138,075 | $ 112,273 | $ 105,323
Percentage Of Product Revenue Based On Geographic Area By Destination | 18.60% | 16.90% | 17.60%
Asia and Australia |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Product | $ 72,449 | $ 65,955 | $ 55,675
Percentage Of Product Revenue Based On Geographic Area By Destination | 9.80% | 10.00% | 9.30%
North and South America (excluding United States) |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Product | $ 23,985 | $ 20,030 | $ 16,708
Percentage Of Product Revenue Based On Geographic Area By Destination | 3.20% | 3.00% | 2.80%
Reportable Geographical Components [Member] | United States |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Concentration Risk, Percentage | 68.40% | 70.10% | 70.30%
Reportable Geographical Components [Member] | United States |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-Lived Assets | $ 263,860 | $ 216,784 | $ 203,553
Concentration Risk, Long-lived Asset Geographic Area, Percentage | 96.10% | 96.30% | 96.80%
Reportable Geographical Components [Member] | International |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-Lived Assets | $ 10,618 | $ 8,383 | $ 6,770
Concentration Risk, Long-lived Asset Geographic Area, Percentage | 3.90% | 3.70% | 3.20%

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