Income Taxes Schedule of Provision For Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Dec. 31, 2016	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
U.S. Federal									$ 40,532	$ 33,267	$ 30,970
State									4,463	2,693	3,139
Foreign									4,305	6,278	6,105
Current, Total									49,300	42,238	40,214
U.S. Federal									23,005	(2,052)	(2,645)
State									(288)	441	134
Foreign									(739)	(1,409)	(723)
Deferred, Total									21,978	(3,020)	(3,234)
Provision for income taxes	$ 52,600	$ 5,767	$ 5,376	$ 7,535	$ 11,754	$ 9,144	$ 9,427	$ 8,893	$ 71,278	$ 39,218	$ 36,980