Goodwill and Other Intangible Assets Goodwill (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Goodwill [Roll Forward]
Goodwill (gross), beginning of period	$ 317,957	$ 326,089
Accumulated Impairment Losses, beginning of period	(79,868)	(79,868)
Goodwill (net), beginning of period	238,089	246,221
Foreign currency translation	(4,561)	(2,568)
Goodwill (gross), end of period	313,396	323,521
Accumulated Impairment Losses, end of period	(79,868)	(79,868)
Goodwill (net), end of period	$ 233,528	$ 243,653