Segment Information (Consolidated Net Sales And Long Lived Assets By Percent) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013	Dec. 28, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 191,944	$ 173,691	$ 562,601	$ 531,909
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	50,385	29,788	140,368	66,772
Long-lived Assets	75,940		75,940		61,716
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	34,389	39,282	105,938	118,329
Long-lived Assets	52,586		52,586		51,260
Hong Kong [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		$ 21,554	$ 57,686	$ 109,089