Business Segments - Schedule of Revenue Information by Product (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Entity Wide Information Revenue From External Customer [Line Items]
Total revenues	$ 13,755	$ 13,426	$ 13,426	$ 27,142	$ 25,385
Distribution Rights [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Revenue Recognized	300			600
Service Contract Revenues
Entity Wide Information Revenue From External Customer [Line Items]
Total revenues	402		764	375	674
Service Contract Revenues | Distribution Rights [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Revenue Recognized	$ 357		$ 0	$ 634	$ 111