Goodwill and Intangible Assets - Summary of Components of Gross and Net Intangible Asset (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Jan. 02, 2016
Schedule of Intangible Assets
Gross Carrying Amount	$ 960	$ 960
Accumulated Amortization	696	692
Net Carrying Amount	264	268	[1]
Patents
Schedule of Intangible Assets
Gross Carrying Amount	720	720
Accumulated Amortization	600	600
Net Carrying Amount	120	120
Customer relations
Schedule of Intangible Assets
Gross Carrying Amount	240	240
Accumulated Amortization	96	92
Net Carrying Amount	$ 144	$ 148
Remaining Amortization Life	9 years

[1] Derived from the audited consolidated financial statements included in the Annual Report on Form 10-K filed with the SEC for the year ended January 2, 2016.