Note 13 - Segment and Related Information (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

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

	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

	Three Months Ended March 31, 2021
	Commercial Air Handling		Industrial And Transportation Products		Corporate and Other			Consolidated
Sales	$	8,765,099	$	15,228,905	$	-		$	23,994,004
Gross Profit		2,230,821		3,772,100		-			6,002,921
Operating Income		1,045,631		1,751,443		(471,614	)		2,325,460
Pretax Income		1,045,631		3,025,970		(402,642	)		3,668,959
Net Income		784,224		2,660,019		(300,826	)		3,143,417