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

3 Months Ended

Mar. 31, 2024

Notes Tables

Schedule of Goodwill [Table Text Block]

	March 31,		December 31,
	2024		2023
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	$	15,974,793	$	15,753,682
Acquisitions		1,330,987		-
Adjustments		-		221,111
Ending Balance	$	17,305,780	$	15,974,793
Total Company:
Beginning Balance	$	16,453,049	$	16,231,938
Acquisitions		1,330,987		-
Adjustments		-		221,111
Ending Balance	$	17,784,036	$	16,453,049

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

	March 31,		December 31,
	2024		2023
Customer list intangibles	$	11,367,000	$	9,316,000
Non-compete agreements		200,000		200,000
Trademarks		4,517,899		4,466,899
Total intangible assets		16,084,899		13,982,899
Less: accumulated amortization		6,080,635		5,730,299
Intangible assets, net	$	10,004,264	$	8,252,600

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

	Amortization in future periods
Remainder of 2024		1,051,008
2025		1,401,343
2026		1,073,479
2027		957,432
2028		899,250