| 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 | |