Note 8 - Geographic Segment Data (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Net Sales to Outside Customers
	For the Three Months Ended
	September 30,
	2021		2020
United States	$	5,183,446	$	4,616,118
Mexico		1,050,785		1,364,648
	$	6,234,231	$	5,980,766

	Net Sales to Outside Customers
	For the Nine Months Ended
	September 30,
	2021		2020
United States	$	17,494,388	$	14,584,541
Mexico		2,481,252		4,209,079
	$	19,975,640	$	18,793,620

Long-lived Assets by Geographic Areas [Table Text Block]

	Total Assets at
	September 30,		December 31,
	2021		2020
United States	$	16,190,285	$	12,458,706
Mexico		8,691,996		8,798,046
Assets Held for Sale International Subsidiaries		-		294,219
	$	24,882,281	$	21,550,971