Income Taxes Schedule of Provision For Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 31, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
U.S. Federal									$ 29,089	$ 30,989	$ 34,666
State									2,873	3,751	4,555
Foreign									10,930	11,224	6,097
Current, Total									42,892	45,964	45,318
U.S. Federal									(20,347)	(6,741)	(2,069)
State									(326)	(1,164)	(588)
Foreign									(246)	(294)	82
Deferred, Total									(20,919)	(8,199)	(2,575)
Provision for income taxes	$ (5,609)	$ 8,847	$ 9,698	$ 9,037	$ 11,712	$ 10,364	$ 7,144	$ 8,545	$ 21,973	$ 37,765	$ 42,743