Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenue
Product sales	$ 45,624	$ 38,748
Barrier rentals	12,019	6,330
Royalty income	3,261	2,633
Shipping and installation revenue	17,604	11,869
Total revenue	78,508	59,580
Cost of sales	58,498	48,928
Gross profit	20,010	10,652
General and administrative expenses	6,554	5,990
Selling expenses	3,557	3,544
Total operating expenses	10,111	9,534
Operating income	9,899	1,118
Other income (expense)
Interest expense	(231)	(255)
Interest income	47	24
Gain on sale of assets	19	346
Other income, net	84	90
Total other income (expense), net	(81)	205
Income before income tax expense	9,818	1,323
Income tax expense	2,143	528
Net income	$ 7,675	$ 795
Basic and diluted earnings per share	$ 1.45	$ 0.15