Condensed Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Income Statement [Abstract]
Net sales	$ 2,719	$ 2,979	$ 5,208	$ 6,442
Cost of sales	2,052	2,454	3,935	5,060
Gross profit	667	525	1,273	1,382
Operating expenses:
Selling and warehouse	320	309	592	573
Marketing	89	111	184	267
Research and development	56	42	83	82
General and administrative	383	349	686	686
Total operating expenses	848	811	1,545	1,608
Loss from operations	(181)	(286)	(272)	(226)
Other income:
SBA loan forgiveness				165
Loss before interest expense and income taxes	(181)	(286)	(272)	(61)
Interest expense	1		2
Loss before income tax	(182)	(286)	(274)	(61)
Income tax expense (benefit)	136	(78)	146	(58)
Net loss	$ (318)	$ (208)	$ (420)	$ (3)
Weighted average common shares outstanding:
Basic	5,154	5,154	5,154	5,154
Diluted	5,154	5,154	5,154	5,154
Loss per common share:
Basic	$ (0.06)	$ (0.04)	$ (0.08)	$ (0.00)
Diluted	$ (0.06)	$ (0.04)	$ (0.08)	$ (0.00)