Note 5 - Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Goodwill [Table Text Block]

	December 31, 2022			December 31, 2021
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	$	13,926,362		$	11,027,596
Acquisitions		1,997,174			2,898,766
Adjustments		(169,854	)		-
Ending Balance	$	15,753,682		$	13,926,362
Total Company:
Beginning Balance	$	14,404,618		$	11,505,852
Acquisitions		1,997,174			2,898,766
Adjustments		(169,854	)		-
Ending Balance	$	16,231,938		$	14,404,618

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

	December 31, 2022		December 31, 2021
Customer Intangibles	$	9,316,000	$	8,741,000
Non-Compete Agreements		200,000		200,000
Trademarks		4,445,649		3,599,149
Total Other Intangibles		13,961,649		12,540,149
Less: Accumulated Amortization		4,469,089		3,203,585
Other Intangibles, Net	$	9,492,560	$	9,336,564

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

	December 31, 2022		December 31, 2021
Accumulated amortization at the beginning of the period	$	3,203,585	$	2,271,691
Amortization expense		1,265,504		931,894
Accumulated amortization at end of period	$	4,469,089	$	3,203,585

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

	Amortization in future periods
2023		1,261,210
2024		1,261,210
2025		1,261,210
2026		1,193,345
2027		817,298