Note 5 - Goodwill and Other Intangible Assets, Net (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Goodwill [Table Text Block]

	March 31,		December 31,
	2023		2022
Commercial Air Handling Equipment Segment:
Beginning Balance	$	478,256	$	478,256
Acquisitions		-		-
Adjustments		-		-
Ending Balance	$	478,256	$	478,256
Industrial and Transportation Products Segment:
Beginning Balance	$	15,753,682	$	13,926,362
Acquisitions		-		1,997,174
Adjustments		-		(169,854	)
Ending Balance	$	15,753,682	$	15,753,682
Total Company:
Beginning Balance	$	16,231,938	$	14,404,618
Acquisitions		-		1,997,174
Adjustments		-		(169,854	)
Ending Balance	$	16,231,938	$	16,231,938

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	March 31,		December 31,
	2023		2022
Customer list intangibles	$	9,316,000	$	9,316,000
Non-compete agreements		200,000		200,000
Trademarks		4,445,649		4,445,649
Total intangible assets		13,961,649		13,961,649
Less: accumulated amortization		4,784,392		4,469,089
Intangible assets, net	$	9,177,257	$	9,492,560