Information Concerning Product Lines, Geographic Information and Revenue Concentration (Schedule of Revenue by Product Line) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jul. 01, 2012 segment		Jul. 03, 2011 segment		Jul. 01, 2012 segment		Jul. 03, 2011 segment
Revenue from External Customer [Line Items]
Number of reportable segments	1		1		1		1
Total revenue	$ 4,071		$ 5,737		$ 8,201		$ 11,284
New Products [Member]
Revenue from External Customer [Line Items]
Total revenue	1,718	[1]	1,190	[1]	3,357	[1]	2,410	[1]
Mature Products [Member]
Revenue from External Customer [Line Items]
Total revenue	$ 2,353	[1]	$ 4,547	[1]	$ 4,844	[1]	$ 8,874	[1]

[1] For all periods presented: New products represent products introduced since 2005, and include ArcticLink®, ArcticLink II, ArcticLink III, Eclipse™ II, PolarPro®, PolarPro II, and QuickPCI® II. Mature products include Eclipse, EclipsePlus, pASIC® 1, pASIC 2, pASIC 3, QuickFC, QuickMIPS, QuickPCI, QuickRAM®, and V3, as well as royalty revenue, programming hardware and software.