Goodwill and Intangible Assets - Summary of Components of Gross and Net Intangible Asset (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 03, 2015	Jan. 03, 2015
Schedule of Intangible Assets
Gross Carrying Amount	$ 960	$ 960
Accumulated Amortization	688	676
Net Carrying Amount	272	284	[1]
Patents
Schedule of Intangible Assets
Gross Carrying Amount	720	720
Accumulated Amortization	600	600
Net Carrying Amount	$ 120	120
Remaining Amortization Period	Varies
Customer Relations
Schedule of Intangible Assets
Gross Carrying Amount	$ 240	240
Accumulated Amortization	88	76
Net Carrying Amount	$ 152	$ 164
Useful Lives	9 years 6 months

[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 3, 2015.