Note 13 - Segment and Related Information (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

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

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2023			2022		2023			2022
Sales summary by segment
Commercial Air Handling	$	14,860,001		$	11,845,380	$	30,911,194		$	23,403,254
Industrial and Transportation Products		22,073,014			20,056,647		45,506,177			39,501,519
Total Sales		36,933,015			31,902,027		76,417,371			62,904,773
Gross profit summary by segment
Commercial Air Handling		5,029,777			2,453,139		9,469,684			5,082,796
Industrial and Transportation Products		5,445,101			4,315,352		11,521,745			8,052,100
Total Gross Profit		10,474,878			6,768,491		20,991,429			13,134,896
Segment operating profit
Commercial Air Handling		3,987,554			1,382,553		7,402,749			2,944,897
Industrial and Transportation Products		2,605,748			1,839,634		5,796,850			3,121,620
Total Segment Operating Profit		6,593,302			3,222,187		13,199,599			6,066,517
Corporate charges not allocated to segments		1,440,938			846,660		2,927,967			2,293,669
Operating Income		5,152,364			2,375,527		10,271,632			3,772,848
Interest charges		366,101			154,065		735,904			415,081
Unrealized (gain) loss on investments		(177,515	)		608,954		(118,482	)		434,069
Other (income) expense, net		(345,968	)		16,838		(344,971	)		(313,063	)
Income before Provision for Income Taxes	$	5,309,746		$	1,595,670	$	9,999,181		$	3,236,761