Note 12 - Acquisitions - Revenue and Net Income of Acquired Entities (Details) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 95,094,396	$ 76,841,745
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	3,491,684	5,588,599
Komtek Forge Acquisition [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	6,592,926	5,052,649
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	351,173	202,903
Acquisition of Global Tek Manufacturing LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	4,883,279	7,209,950
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	(540,931)	1,388,401
Acquisition of Emergency Hydraulics LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,088,372	268,102
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	97,375	19,549
Reverso Pumps, Inc. [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	3,930,057	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	663,070	0
Separ America [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,440,788	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	247,346	0
Knitting Machinery Company of America LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	818,108	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	73,195	0
Acquired Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	18,753,530	12,530,701
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	891,228	1,610,853
All Other Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	76,340,866	64,311,044
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 2,600,456	$ 3,977,746