Goodwill and Intangible Assets - Summary of Components of Gross and Net Intangible Asset (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2019	Dec. 29, 2018
Schedule of Intangible Assets
Net Carrying Amount	$ 92	$ 100	[1]
Customer relationships
Schedule of Intangible Assets
Gross Carrying Amount	240	240
Accumulated Amortization	148	140
Net Carrying Amount	$ 92	$ 100
Remaining Amortization Life	5 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 29, 2018.