Segment Information - Long-lived assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012		Dec. 31, 2011		Dec. 31, 2010
Segment Reporting Information [Line Items]
Long-lived assets	$ 72,326	[1]	$ 66,591	[1]	$ 50,270	[1]
United States And Canada [Member]
Segment Reporting Information [Line Items]
Long-lived assets	48,516	[1]	41,428	[1]	44,357	[1]
Asia [Member]
Segment Reporting Information [Line Items]
Long-lived assets	3,391	[1]	2,467	[1]	1,805	[1]
Europe And Middle East [Member]
Segment Reporting Information [Line Items]
Long-lived assets	19,198	[1]	18,780	[1]	3,159	[1]
Latin America [Member]
Segment Reporting Information [Line Items]
Long-lived assets	1,221	[1]	3,916	[1]	949	[1]
Total International [Member]
Segment Reporting Information [Line Items]
Long-lived assets	$ 23,810	[1]	$ 25,163	[1]	$ 5,913	[1]

[1] Long lived assets as previously reported included goodwill and other intangibles assets, which have been removed from all years in the current year presentation.