CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenues	$ 4,107	$ 2,257	$ 11,338	$ 9,357
Cost of sales:
Cost of sales	2,605	1,875	6,793	5,827
Depreciation	128	113	381	366
Total cost of sales	2,733	1,988	7,174	6,193
Gross profit	1,374	269	4,164	3,164
Operating expenses:
Selling, general and administrative	1,555	1,644	4,807	4,730
Depreciation and amortization	27	48	80	164
Total operating expenses	1,582	1,692	4,887	4,894
Operating loss	(208)	(1,423)	(723)	(1,730)
Other expense (income):
Interest (income) expense, net	(7)	5	(3)	10
Other income, net	(61)	0	(53)	(52)
Loss (gain) on sale of property, plant and equipment	0	147	(2)	(41)
Total other expense (income)	(68)	152	(58)	(83)
Loss before income tax expense	(140)	(1,575)	(665)	(1,647)
Income tax expense	3	4	8	19
Net loss	$ (143)	$ (1,579)	$ (673)	$ (1,666)
Net loss per share:
Basic	$ (0.01)	$ (0.13)	$ (0.06)	$ (0.14)
Fully diluted	$ (0.01)	$ (0.13)	$ (0.06)	$ (0.14)
Weighted-average shares outstanding:
Basic	11,888	11,888	11,888	12,012
Fully diluted	11,888	11,888	11,888	12,012