Note 13 - Segment and Related Information (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

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

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2023			2022			2023			2022
Sales summary by segment
Commercial Air Handling	$	12,728,949		$	11,485,339		$	43,640,142		$	34,888,594
Industrial and Transportation Products		20,912,564			20,704,284			66,418,742			60,205,802
Total Sales		33,641,513			32,189,623			110,058,884			95,094,396
Gross profit summary by segment
Commercial Air Handling		4,303,355			2,558,998			13,773,039			7,641,794
Industrial and Transportation Products		4,605,977			3,750,805			16,127,722			11,802,906
Total Gross Profit		8,909,332			6,309,803			29,900,761			19,444,700
Segment operating profit
Commercial Air Handling		3,339,289			1,522,819			10,742,038			4,467,716
Industrial and Transportation Products		1,948,255			1,132,485			7,745,106			4,254,106
Total Segment Operating Profit		5,287,544			2,655,304			18,487,144			8,721,822
Corporate charges not allocated to segments		990,576			655,626			3,918,544			2,949,295
Operating Income		4,296,968			1,999,678			14,568,600			5,772,527
Interest charges		294,825			331,156			1,030,729			746,237
(Gain) loss on investments		135,522			101,370			17,040			535,439
Other (income) expense, net		(599	)		(195,046	)		(345,569	)		(508,108	)
Income before Provision for Income Taxes	$	3,867,220		$	1,762,198		$	13,866,400		$	4,998,959