Information Concerning Product Lines, Geographic Information and Revenue Concentration - Schedule of Revenue by Shipment Destination (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 10,310	$ 12,629	$ 12,149
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	3,049	4,905	5,810
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	2,459	1,280	2,015
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 4,802	$ 6,444	$ 4,324