Note 12 - Acquisitions - Revenue and Net Income of Acquired Entities (Details) - USD ($)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 62,904,773	$ 50,443,889
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	2,237,139	4,390,722
Komtek Forge Acquisition [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	4,148,696	3,634,832
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	200,675	273,371
Acquisition of Global Tek Manufacturing LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	3,154,086	4,310,258
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	(488,575)	705,122
Acquisition of Emergency Hydraulics LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	656,068	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	69,543	0
Reverso Pumps, Inc. [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	2,548,563	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	351,769	0
Separ America [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	869,739	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	234,595	0
Knitting Machinery Company of America LLC [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	579,388	0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	61,415	0
Acquired Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	11,956,540	7,945,090
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	429,422	978,493
All Other Entities [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	50,948,233	42,498,799
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 1,807,717	$ 3,412,229