Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012
Components of purchased intangible assets
Annual Amortization	$ 226	$ 191
Gross Carrying Value	960	960
Accumulated Amortization	632	406
Net Carrying Value	328	554
Customer relations
Components of purchased intangible assets
Useful Lives	15 years	15 years
Useful Lives Remaining	11 years 3 months	12 years 4 months 24 days
Annual Amortization	16	16
Gross Carrying Value	240	240
Accumulated Amortization	60	44
Net Carrying Value	180	196
Patents
Components of purchased intangible assets
Annual Amortization	210	175
Gross Carrying Value	720	720
Accumulated Amortization	572	362
Net Carrying Value	$ 148	$ 358
Useful Lives Remaining	Varies	Varies