Note 11 - Acquisitions - Revenue and Net Income of Acquired Entities (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 46,854,462	$ 37,636,088	$ 90,168,573	$ 76,075,727
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	5,129,849	3,283,456	8,260,884	6,280,341
Heany Industries, LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,804,826	1,455,787	3,189,538	2,911,318
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	189,435	97,628	7,445	117,097
Advanced Industrial Coatings LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,070,763	0	2,114,201	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	65,610	0	75,678	0
Rahn Industries, Incorporated [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	5,867,885	0	10,177,500	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	1,140,919	0	1,273,887	0
Acquired Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	8,743,474	1,455,787	15,481,239	2,911,318
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	1,395,964	97,628	1,357,010	117,097
All Other Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	38,110,988	36,180,301	74,687,334	73,164,409
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 3,733,885	$ 3,185,828	$ 6,903,874	$ 6,163,244