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, beginning of period	$ 136,152	$ 131,320
Goodwill additions	46,446	0
Goodwill adjustments	1,662	(3,148)
Goodwill, end of period	$ 184,260	$ 128,172