Goodwill and Intangible Assets - Summary of Components of Gross and Net Intangible Asset (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2017	Dec. 31, 2016
Schedule of Intangible Assets
Net Carrying Amount	$ 124	$ 132	[1]
Customer relations
Schedule of Intangible Assets
Gross Carrying Amount	240	240
Accumulated Amortization	116	108
Net Carrying Amount	$ 124	$ 132
Remaining Amortization Life	7 years 9 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 December 31, 2016.