Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenue
Product sales	$ 9,112	$ 10,752
Barrier rentals	8,425	893
Royalty income	890	575
Shipping and installation revenue	4,271	4,536
Total revenue	22,698	16,756
Cost of sales	15,723	12,845
Gross profit	6,975	3,911
Operating expenses
General and administrative expenses	1,584	1,549
Selling expenses	1,004	853
Total operating expenses	2,588	2,402
Operating income	4,387	1,509
Other income (expense)
Interest expense	(55)	(60)
Interest income	7	8
Gain on sale of assets	0	3
Other income	8	44
Total other income (expense)	(40)	(5)
Income before income tax expense (benefit)	4,348	1,504
Income tax expense (benefit)	1,020	357
Net income	$ 3,327	$ 1,147
Basic earnings per common share	$ 0.63	$ 0.22
Diluted earnings per common share	$ 0.62	$ 0.21
Weighted average number of common shares outstanding:
Basic	5,304	5,309
Diluted	5,305	5,350