Note 15 - Acquisitions - Revenue and Net Income of Acquired Entities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 127,754,927	$ 104,162,227
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	6,561,403	5,653,298
Komtek Forge Acquisition [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	9,103,652	6,622,601
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	571,640	38,434
Acquisition of Global Tek Manufacturing LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	6,537,499	9,249,412
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	(217,140)	1,582,758
Acquisition of Emergency Hydraulics LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,500,573	516,319
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	121,546	48,021
Reverso Pumps, Inc. [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	5,467,426	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	876,558	0
Separ America [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,746,551	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	353,239	0
Knitting Machinery Company of America LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	1,022,603	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	82,830	0
Acquired Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	25,378,304	16,388,332
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	1,788,673	1,669,213
All Other Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	102,376,623	87,773,895
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 4,772,730	$ 3,984,085