Segment Information (Consolidated Net Sales And Long Lived Assets By Percent) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Dec. 28, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 182,401	$ 169,082
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	37,613	40,238
Long-lived Assets	51,652		51,260
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	38,760
Long-lived Assets	66,587		61,716
Hong Kong [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 23,524	$ 41,597