Note 12 - Acquisitions - Revenue and Net Income of Acquired Entities (Details) - USD ($)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 76,417,371	$ 62,904,773
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	7,242,815	2,237,139
Reverso Pumps, Inc. [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	3,488,362	2,548,563
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	628,288	351,769
Separ America [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,493,852	869,739
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	487,400	234,595
Knitting Machinery Company of America LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	138,566	579,388
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	15,519	61,415
Acquired Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	5,120,780	3,997,690
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	1,131,207	647,779
All Other Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	71,296,591	58,907,083
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 6,111,608	$ 1,589,360