Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue	$ 32,558	$ 29,571	$ 64,477	$ 53,652
Cost of revenue	17,528	16,023	34,395	29,091
Gross profit	15,030	13,548	30,082	24,561
Operating expenses:
Selling expense	4,661	4,033	9,116	7,489
Engineering and product development expense	1,983	1,859	3,887	3,783
General and administrative expense	5,042	4,928	10,217	9,759
Total operating expenses	11,686	10,820	23,220	21,031
Operating income	3,344	2,728	6,862	3,530
Interest expense	(176)	(141)	(358)	(278)
Other income (expense)	197	(17)	255	(27)
Earnings before income tax expense	3,365	2,570	6,759	3,225
Income tax expense	572	454	1,149	532
Net earnings	$ 2,793	$ 2,116	$ 5,610	$ 2,693
Earnings per common share - basic (in dollars per share)	$ 0.25	$ 0.20	$ 0.51	$ 0.25
Weighted average common shares outstanding - basic (in shares)	11,241,183	10,653,268	10,998,456	10,635,270
Earnings per common share - diluted (in dollars per share)	$ 0.24	$ 0.20	$ 0.49	$ 0.25
Weighted average common shares and common share equivalents outstanding - diluted (in shares)	11,696,569	10,814,799	11,392,617	10,828,696