Note 12 - Acquisitions - Revenue and Net Income of Acquired Entities (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 110,058,884	$ 95,094,396
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	10,057,550	3,491,684
Reverso Pumps, Inc. [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	4,987,873	3,930,057
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	863,978	663,070
Separ America [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,942,594	1,440,788
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	617,175	247,346
Knitting Machinery Company of America LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	229,080	818,108
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	19,014	73,195
Acquired Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	7,159,547	6,188,953
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	1,500,167	983,611
All Other Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	102,899,337	88,905,443
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 8,557,383	$ 2,508,073