Note 5 - Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Goodwill [Table Text Block]

	December 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		221,111		(169,854	)
Ending Balance	$	15,974,793	$	15,753,682
Total Company:
Beginning Balance	$	16,231,938	$	14,404,618
Acquisitions		-		1,997,174
Adjustments		221,111		(169,854	)
Ending Balance	$	16,453,049	$	16,231,938

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

	December 31, 2023		December 31, 2022
Customer list intangibles	$	9,316,000	$	9,316,000
Non-compete agreements		200,000		200,000
Trademarks		4,466,899		4,445,649
Total intangible assets		13,982,899		13,961,649
Less: accumulated amortization		5,730,299		4,469,089
Intangible assets, net	$	8,252,600	$	9,492,560

Finite-Lived Intangible Assets Amortization Expense [Table Text Block]

	December 31, 2023		December 31, 2022
Accumulated amortization at the beginning of the period	$	4,469,089	$	3,203,585
Amortization expense		1,261,210		1,265,504
Accumulated amortization at end of period	$	5,730,299	$	4,469,089

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

	Amortization in future periods
2024		1,261,210
2025		1,261,210
2026		933,345
2027		817,298
2028		759,117