Business Segments - Schedule of Revenue Information by Product (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Entity Wide Information Revenue From External Customer [Line Items]
Total revenues	$ 13,426	$ 6,219	$ 25,385	$ 15,240
Distribution Rights [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Revenue Recognized	100		100
Service Contract Revenues
Entity Wide Information Revenue From External Customer [Line Items]
Total revenues	375	$ 674	311	$ 627
Service Contract Revenues | Distribution Rights [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Revenue Recognized	$ 111		$ 111