Note 15 - Acquisitions - Revenue and Net Income of Acquired Entities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 150,198,284	$ 143,885,934
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	13,597,967	13,294,793
Heany Industries, LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	6,036,355	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	449,497	0
Advanced Industrial Coatings LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,566,029	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	130,897	0
Acquired Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	7,602,384	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	580,394	0
All Other Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	142,595,900	143,885,934
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 13,017,573	$ 13,294,793