CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue, net	$ 4,049	$ 2,040	$ 7,327	$ 4,031
Cost of revenue	1,988	1,088	3,679	1,838
Gross profit	2,061	952	3,648	2,193
Operating expenses:
Engineering, research and development	650	330	1,177	593
Selling, general and administrative	1,005	773	2,238	1,733
Total operating expenses	1,655	1,103	3,415	2,326
Income (loss) from operations	406	(151)	233	(133)
Other income (expense):
Other income (expense), net	64	342	128	497
Income before income taxes	470	191	361	364
Income tax expense	89	79	171	110
Net income	381	112	190	254
Net income (loss) applicable to common stockholders	$ 281	$ 12	$ (10)	$ 54
Earnings (loss) per common share, basic	$ 0.04	$ 0.00	$ 0.00	$ 0.01
Earnings (loss) per common share, diluted	$ 0.04	$ 0.00	$ 0.00	$ 0.01
Weighted average common shares outstanding - basic	6,600	6,602	6,610	6,602
Weighted average common shares outstanding - diluted	6,600	6,602	6,610	6,602