Note 17 - Segment and Related Information (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

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

	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

	Year Ended December 31, 2018
	Commercial Air Handling		Aerospace Components		Industrial Hose		Corporate and Other			Consolidated
Sales		41,833,444		14,397,557		6,942,886		3,204,419			66,378,306
Gross Profit		11,046,113		1,653,123		1,813,752		790,979			15,303,967
Operating Income		6,409,687		807,860		820,881		(723,969	)		7,314,459
Pretax Income		6,328,158		630,966		619,909		(2,297,303	)		5,281,730
Net Income		4,746,119		473,225		464,461		(2,070,095	)		3,613,710

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

	Year Ended December 31, 2019		Year Ended December 31, 2018
United States of America	$	89,370,005	$	64,874,554
Canada		283,011		351,211
China		23,134		-
Mexico		-		53,246
Poland		1,750		10,299
Peru		12,202		-
Other		8,425		1,088,996
	$	89,698,527	$	66,378,306