Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Loss per common share:
Loss, numerator, basic computation	$ (318)	$ (208)	$ (427)	$ (3)
Net loss, numerator, diluted computation	$ (318)	$ (208)	$ (427)	$ (3)
Weighted average shares - denominator basic computation	5,154	5,154	5,154	5,154
Weighted average shares, as adjusted - denominator diluted computation	5,154	5,154	5,154	5,154
Loss per common share - basic	$ (0.06)	$ (0.04)	$ (0.08)	$ (0.00)
Loss per common share - diluted	$ (0.06)	$ (0.04)	$ (0.08)	$ (0.00)