Information Concerning Product Lines, Geographic Information and Revenue Concentration (Schedule of Revenue by Geographical Area) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 28, 2014		Sep. 29, 2013		Sep. 28, 2014		Sep. 29, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 4,124	[1]	$ 9,066	[1]	$ 22,124	[1]	$ 17,209	[1]
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	2,341		7,467		16,179		12,555
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	1,084		1,025		3,158		3,292
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 699		$ 574		$ 2,787		$ 1,362

[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.