Note 1 - Summary of Significant Accounting Policies - Net Sales by Geographical Region (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net Sales	$ 32,637,484	$ 12,232,088
Reportable Geographical Components [Member] | US And Canada [Member]
Net Sales	1,600,298	922,245
Reportable Geographical Components [Member] | AUSTRALIA
Net Sales	425,560	597,214
Reportable Geographical Components [Member] | South America [Member]
Net Sales		49,861
Reportable Geographical Components [Member] | Asia [Member]
Net Sales	5,991,440	1,369,735
Reportable Geographical Components [Member] | Europe [Member]
Net Sales	$ 24,620,186	$ 9,293,033