CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenues	$ 2,257	$ 3,550	$ 9,357	$ 12,000
Cost of sales:
Cost of sales	1,875	2,569	5,827	7,518
Depreciation expense	113	144	366	511
Total cost of sales	1,988	2,713	6,193	8,029
Gross profit	269	837	3,164	3,971
Operating expenses:
Selling, general and administrative	1,644	1,336	4,730	4,623
Depreciation and amortization	48	65	164	220
Total operating expenses	1,692	1,401	4,894	4,843
Operating loss	(1,423)	(564)	(1,730)	(872)
Other (income) expense:
Interest expense, net	5	1	10	8
Other income, net	0	(1,050)	(52)	(2,193)
Loss (gain) on sale of property, plant and equipment	147	148	(41)	94
Total other (income) expense	152	(901)	(83)	(2,091)
Income (loss) before income taxes	(1,575)	337	(1,647)	1,219
Income tax expense	4	5	19	15
Net income (loss)	$ (1,579)	$ 332	$ (1,666)	$ 1,204
Net income (loss) per share:
Basic	$ (0.13)	$ 0.03	$ (0.14)	$ 0.10
Fully diluted	$ (0.13)	$ 0.03	$ (0.14)	$ 0.10
Weighted-average shares outstanding:
Basic	11,888	12,389	12,012	12,389
Fully diluted	11,888	12,445	12,012	12,441