Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue	$ 84,878	$ 53,823
Cost of revenue	43,654	29,719
Gross margin	41,224	24,104
Operating expenses:
Selling expense	11,083	7,522
Engineering and product development expense	5,531	5,070
General and administrative expense	15,865	11,444
Restructuring and other charges	286	1,285
Total operating expenses	32,765	25,321
Operating income (loss)	8,459	(1,217)
Other expense	(57)	(14)
Earnings (loss) before income tax expense (benefit)	8,402	(1,231)
Income tax expense (benefit)	1,119	(336)
Net earnings (loss)	$ 7,283	$ (895)
Net earnings (loss) per common share – basic (in dollars per share)	$ 0.70	$ (0.09)
Weighted average common shares outstanding – basic (in shares)	10,462,246	10,256,560
Net earnings (loss) per common share – diluted (in dollars per share)	$ 0.68	$ (0.09)
Weighted average common shares and common share equivalents outstanding – diluted (in shares)	10,729,862	10,256,560