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				9 Months Ended
	Sep. 28, 2014 segment		Sep. 29, 2013 segment		Sep. 28, 2014 segment		Sep. 29, 2013 segment
Revenue from External Customer [Line Items]
Number of reportable segments	1		1		1		1
Total revenue	$ 4,124	[1]	$ 9,066	[1]	$ 22,124	[1]	$ 17,209	[1]
New Products [Member]
Revenue from External Customer [Line Items]
Total revenue	2,236	[1]	7,139	[1]	15,634	[1]	11,174	[1]
Mature Products [Member]
Revenue from External Customer [Line Items]
Total revenue	$ 1,888	[1]	$ 1,927	[1]	$ 6,490	[1]	$ 6,035	[1]

[1] For all periods presented: New products include all products manufactured on 180 nanometer or smaller semiconductor processes. Mature products include all products produced on semiconductor processes larger than 180 nanometers.