Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenues	$ 26,941	$ 24,261
Costs and expenses:
Cost of sales	15,298	12,363
Selling, general and administrative	12,275	12,055
Research and development	895	1,332
Total costs and expenses	28,468	25,750
Operating loss	(1,527)	(1,489)
Interest expense	(17)	(19)
Interest income	202	6
Other (expense) income, net	(46)	1,570
(Loss) income before income taxes	(1,388)	68
Income tax expense	(54)	(14)
Net (loss) income	$ (1,442)	$ 54
Net (loss) income per common share:
Basic net (loss) income per common share (in dollars per share)	$ (0.05)	$ 0.00
Diluted net (loss) income per common share (in dollars per share)	$ (0.05)	$ 0.00
Weighted-average number of common shares outstanding:
Basic weighted-average shares (in shares)	30,289,000	29,585,000
Diluted (in shares)	30,289,000	29,694,000