Note 16 - Segment and Related Information (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Twelve Months Ended December 31, 2022
	Commercial Air Handling Equipment		Industrial And Transportation Products		Corporate			Consolidated
Sales	$	47,649,695	$	80,105,232	$	-		$	127,754,927
Gross Profit	$	10,751,822	$	16,280,959	$	-		$	27,032,781
Operating Income	$	6,670,069	$	5,955,820	$	(4,092,417	)	$	8,533,472
Pretax Income	$	6,670,069	$	5,951,335	$	(4,889,210	)	$	7,732,194
Net Income	$	4,769,099	$	4,253,978	$	(2,461,674	)	$	6,561,403

	Twelve Months Ended December 31, 2021
	Commercial Air Handling Equipment		Industrial And Transportation Products		Corporate			Consolidated
Sales	$	38,018,412	$	66,143,815	$	-		$	104,162,227
Gross Profit	$	7,749,628	$	14,162,131	$	706		$	21,912,465
Operating Income	$	3,065,156	$	4,519,290	$	(594,194	)	$	6,990,252
Pretax Income	$	3,071,119	$	4,209,308	$	82,515		$	7,362,942
Net Income	$	2,303,339	$	3,468,366	$	(118,407	)	$	5,653,298

	Year Ended December 31, 2022		Year Ended December 31, 2021
Capital Expenditures:
Commercial Air Handling Equipment Segment	$	53,591	$	187,941
Industrial and Transportation Products Segment		534,563		2,853,419
Corporate		154,674		103,143
Total Capital Expenditures	$	742,828	$	3,144,503
Depreciation and Amortization:
Commercial Air Handling Equipment Segment	$	431,752	$	437,770
Industrial and Transportation Products Segment		3,151,898		2,409,574
Corporate		167,155		139,255
Total Depreciation and Amortization	$	3,750,805	$	2,986,599
Identifiable Assets:
Commercial Air Handling Equipment Segment	$	20,681,082	$	17,004,003
Industrial and Transportation Products Segment		76,701,530		68,146,058
Corporate		2,215,461		5,813,250
Total Identifiable Assets	$	99,598,074	$	90,963,311

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	Year Ended December 31, 2022		Year Ended December 31, 2021
United States of America	$	125,097,522	$	102,678,670
Canada		1,175,246		292,927
United Kingdom		443,808		-
Puerto Rico		413,684		619,625
Mexico		52,549		309,978
Other		572,118		261,027
	$	127,754,927	$	104,162,227