Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Americas:
Total Americas	$ 238,355	$ 216,798	$ 470,825	$ 429,988
Total revenue	518,391	479,001	1,035,704	955,912
United States [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	230,673	206,742	455,476	412,177
Other Americas [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	7,682	10,056	15,349	17,811
Asia [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	134,399	131,395	274,346	253,818
EMEA [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	105,673	91,413	210,380	189,734
Japan [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	$ 39,964	$ 39,395	$ 80,153	$ 82,372

Entity wide disclosure on geographic areas revenue from external customers attributed to country of domicile and other foreign countries.

No definition available.

+ Details

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- Definition

Entity wide disclosure on geographic areas revenue from external customers attributed to entity's country of domicile and other foreign countries.

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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