Goodwill and Intangible Assets - Summary of Components of Gross and Net Intangible Asset (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Dec. 31, 2016
Schedule of Intangible Assets
Net Carrying Amount	$ 128	$ 132
Customer relations
Schedule of Intangible Assets
Gross Carrying Amount	240	240
Accumulated Amortization	112	108
Net Carrying Amount	$ 128	$ 132
Remaining Amortization Life	9 years