Note 13 - Segment and Related Information (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

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

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2024			2023			2024		2023
Sales summary by segment
Commercial Air Handling	$	16,431,398		$	14,860,001		$	33,409,842	$	30,911,194
Industrial and Transportation Products		21,204,690			22,073,014			42,665,885		45,506,177
Total Sales		37,636,088			36,933,015			76,075,727		76,417,371
Gross profit summary by segment
Commercial Air Handling		5,701,513			5,029,777			11,333,608		9,469,684
Industrial and Transportation Products		4,709,802			5,445,101			9,322,740		11,521,745
Total Gross Profit		10,411,315			10,474,878			20,656,348		20,991,429
Segment operating profit
Commercial Air Handling		4,672,034			3,987,554			9,220,835		7,402,749
Industrial and Transportation Products		1,592,294			2,605,748			3,167,408		5,796,850
Total Segment Operating Profit		6,264,328			6,593,302			12,388,243		13,199,599
Corporate charges not allocated to segments		1,148,147			1,440,938			2,697,972		2,927,967
Operating Income		5,116,181			5,152,364			9,690,271		10,271,632
Interest charges		304,057			366,101			541,898		735,904
Loss (gain) on investments		261,389			(177,515	)		379,466		(118,482	)
Other (income) expense, net		(5,557	)		(345,968	)		66,706		(344,971	)
Income before Provision for Income Taxes	$	4,556,292		$	5,309,746		$	8,702,201	$	9,999,181