Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Americas:
Total Americas	$ 233,461	$ 216,286	$ 704,285	$ 646,274
Total revenue	532,468	485,398	1,568,172	1,441,310
United States [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	224,458	208,348	679,934	620,525
Other Americas [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	9,003	7,938	24,351	25,749
Asia [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	156,887	131,890	431,233	385,708
EMEA [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	101,452	94,681	311,833	284,415
Japan [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	$ 40,668	$ 42,541	$ 120,821	$ 124,913