Information Concerning Product Lines, Geographic Information, Accounts Receivable and Revenue Concentration (Schedule of Revenue by Product Line) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2014 segment		Dec. 29, 2013 segment		Dec. 30, 2012 segment
Revenue from External Customer [Line Items]
Number of reportable segments	1		1		1
Total revenue	$ 27,845	[1]	$ 26,072	[1]	$ 14,944	[1]
New Products [Member]
Revenue from External Customer [Line Items]
Total revenue	19,311	[1]	18,219	[1]	5,920	[1]
Mature Products [Member]
Revenue from External Customer [Line Items]
Total revenue	$ 8,534	[1]	$ 7,853	[1]	$ 9,024	[1]

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