Income Taxes - Components of Loss From Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Income Taxes
Domestic operations	$ (10,460)	$ (1,738)	$ (10,618)
Foreign operations	472	532	507
Loss before income taxes	$ (9,988)	$ (1,206)	$ (10,111)