Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue	$ 30,771	$ 21,144	$ 84,423	$ 62,520
Cost of revenue	16,873	10,749	45,964	31,642
Gross profit	13,898	10,395	38,459	30,878
Operating expenses:
Selling expense	4,009	2,841	11,498	7,849
Engineering and product development expense	1,866	1,334	5,649	4,012
General and administrative expense	4,864	3,620	14,623	10,550
Restructuring and other charges	0	51	0	303
Total operating expenses	10,739	7,846	31,770	22,714
Operating income	3,159	2,549	6,689	8,164
Other income (expense)	(120)	(17)	(425)	2
Earnings before income tax expense	3,039	2,532	6,264	8,166
Income tax expense	515	357	1,047	1,170
Net earnings	$ 2,524	$ 2,175	$ 5,217	$ 6,996
Earnings per common share - basic (in dollars per share)	$ 0.24	$ 0.21	$ 0.49	$ 0.67
Weighted average common shares outstanding - basic (in shares)	10,695,867	10,496,188	10,655,469	10,422,851
Earnings per common share - diluted (in dollars per share)	$ 0.23	$ 0.20	$ 0.48	$ 0.65
Weighted average common shares and common share equivalents outstanding - diluted (in shares)	10,864,540	10,792,290	10,840,644	10,694,351