Note 13 - Segment and Related Information (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

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

	Three Months Ended March 31, 2023
	Commercial Air Handling		Industrial And Transportation Products		Corporate and Other			Consolidated
Sales	$	16,051,193	$	23,433,163	$	-		$	39,484,356
Gross Profit		4,439,907		6,076,645		-			10,516,552
Operating Income		3,415,195		3,191,102		(1,487,030	)		5,119,267
Pretax Income		3,415,195		3,182,204		(1,907,964	)		4,689,435
Net Income		2,441,864		2,313,803		(1,364,194	)		3,391,473

	Three Months Ended March 31, 2022
	Commercial Air Handling		Industrial And Transportation Products		Corporate and Other			Consolidated
Sales	$	11,557,874	$	19,444,872	$	-		$	31,002,746
Gross Profit		2,629,657		3,736,748		-			6,366,405
Operating Income		1,562,344		1,281,985		(1,447,008	)		1,397,321
Pretax Income		1,562,344		1,415,972		(1,337,225	)		1,641,091
Net Income		1,117,076		946,234		(997,435	)		1,065,875