CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Revenues	$ 12,977	$ 17,233
Cost of sales:
Cost of sales	7,796	10,733
Depreciation expense	496	663
Total cost of sales	8,292	11,396
Gross profit	4,685	5,837
Operating expenses:
Selling, general and administrative	6,687	5,892
Depreciation and amortization	186	288
Right-of-use operating lease asset impairment	820	0
Total operating expenses	7,693	6,180
Operating loss	(3,008)	(343)
Other (income) expense:
Interest expense, net	15	12
Other income, net	(55)	(2,869)
(Gain) loss on sale of property, plant and equipment	(40)	76
Total other (income) expense	(80)	(2,781)
Income (loss) before income tax expense	(2,928)	2,438
Income tax expense	0	112
Net income (loss)	$ (2,928)	$ 2,326
Net income (loss) per share:
Basic	$ (0.24)	$ 0.19
Fully diluted	$ (0.24)	$ 0.19
Weighted-average shares outstanding:
Basic	11,981	12,389
Fully diluted	11,981	12,454