Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue
Product sales	$ 10,753	$ 10,898	$ 34,621	$ 29,842
Barrier rentals	7,053	784	9,303	2,604
Royalty income	958	822	2,403	1,827
Shipping and installation revenue	4,818	3,147	13,650	8,918
Total revenue	23,582	15,651	59,977	43,191
Cost of sales	17,004	12,074	44,353	35,662
Gross profit	6,578	3,577	15,624	7,529
Operating expenses
General and administrative expenses	1,720	1,187	4,938	4,420
Selling expenses	1,010	888	2,655	2,533
Total operating expenses	2,730	2,075	7,593	6,953
Operating income (loss)	3,848	1,502	8,031	576
Other income (expenses)
Interest expense	(56)	(64)	(175)	(192)
Interest income	22	6	36	17
Gain on sale of assets	16	53	19	252
Other income (expense)	14	16	50	72
Total other income (expense)	(4)	11	(70)	149
Income (loss) before income tax expense (benefit)	3,844	1,513	7,961	725
Income tax expense (benefit)	694	247	1,683	160
Net income (loss)	$ 3,150	$ 1,266	$ 6,278	$ 565
Basic and diluted earnings (loss) per common share	$ 0.59	$ 0.24	$ 1.18	$ 0.11
Weighted average number of common shares outstanding:
Weighted average number of common shares outstanding: Basic	5,304	5,256	5,283	5,256
Weighted average number of common shares outstanding: Diluted	5,304	5,298	5,283	5,293