CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue, net	$ 7,493	$ 7,478
Cost of revenue	3,632	3,420
Gross profit	3,861	4,058
Operating expenses:
Engineering, research and development	1,220	893
Selling, general and administrative	3,309	3,244
Total operating expenses	4,529	4,137
Loss from operations	(668)	(79)
Other income (expense):
Other income (expense), net	2,611	(50)
Income (loss) before income taxes	1,943	(129)
Income tax expense	271	605
Net income (loss)	1,672	(734)
Net income (loss) applicable to common stockholders	$ 1,272	$ (782)
Earnings (loss) per common share, basic	$ 0.19	$ (0.12)
Earnings (loss) per common share, diluted	$ 0.19	$ (0.12)
Weighted average common shares outstanding - basic	6,603	6,601
Weighted average common shares outstanding - diluted	6,603	6,601