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				6 Months Ended
	Jun. 29, 2014		Jun. 30, 2013		Jun. 29, 2014		Jun. 30, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 6,836	[1]	$ 5,126	[1]	$ 18,000	[1]	$ 8,143	[1]
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	2,647		2,374		10,446		2,405
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	1,352		338		2,088		788
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	891		1,022		1,955		1,963
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	643		510		1,325		1,112
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	517		371		900		502
Malaysia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	690		346		1,149		1,031
Rest of North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	82		127		118		304
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 14		$ 38		$ 19		$ 38

[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.