Note 17 - Segment and Related Information (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

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

	Year Ended December 31, 2020
	Commercial Air Handling		Aerospace Components			Industrial Hose		Corporate and Other			Consolidated
Sales	$	41,243,413	$	18,916,525		$	22,762,199	$	2,147,763		$	85,069,900
Gross Profit		10,216,587		1,415,591			6,518,682		780,430			18,931,290
Operating Income		5,313,487		(649,230	)		3,746,257		(958,061	)		7,452,453
Pretax Income		5,750,226		(1,164,179	)		2,114,580		774,614			7,475,241
Net Income		4,312,669		(873,134	)		1,585,935		813,917			5,839,387

	Year Ended December 31, 2019
	Commercial Air Handling		Aerospace Components		Industrial Hose		Corporate and Other			Consolidated
Sales		51,564,344		30,126,438		7,171,164		836,581			89,698,527
Gross Profit		12,350,412		5,015,003		1,970,149		239,071			19,574,635
Operating Income		7,141,097		2,876,304		859,114		(365,849	)		10,510,666
Pretax Income		7,140,398		2,073,239		635,995		(430,142	)		9,419,490
Net Income		5,291,035		1,536,270		471,272		(318,714	)		6,979,863

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	Year Ended December 31, 2020		Year Ended December 31, 2019
United States of America	$	83,992,635	$	89,370,005
Puerto Rico		601,232		-
Canada		388,531		283,011
Other		87,502		45,511
	$	85,069,900	$	89,698,527