Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue	$ 32,663	$ 30,771	$ 97,140	$ 84,423
Cost of revenue	17,329	16,873	51,724	45,964
Gross profit	15,334	13,898	45,416	38,459
Operating expenses:
Selling expense	4,367	4,009	13,483	11,498
Engineering and product development expense	1,802	1,866	5,689	5,649
General and administrative expense	5,882	4,864	16,099	14,623
Total operating expenses	12,051	10,739	35,271	31,770
Operating income	3,283	3,159	10,145	6,689
Interest expense	(168)	(179)	(526)	(457)
Other income	423	59	678	32
Earnings before income tax expense	3,538	3,039	10,297	6,264
Income tax expense	572	515	1,721	1,047
Net earnings	$ 2,966	$ 2,524	$ 8,576	$ 5,217
Earnings per common share - basic (in dollars per share)	$ 0.25	$ 0.24	$ 0.76	$ 0.49
Weighted average common shares outstanding - basic (in shares)	11,886,005	10,695,867	11,294,306	10,655,469
Earnings per common share - diluted (in dollars per share)	$ 0.24	$ 0.23	$ 0.74	$ 0.48
Weighted average common shares and common share equivalents outstanding - diluted (in shares)	12,212,317	10,864,540	11,665,850	10,840,644