Note 2 - Going Concern (Details Textual) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Net Income (Loss) Attributable to Parent, Total	$ (3,491,071)	$ (3,906,142)	$ (2,947,420)	$ (3,285,914)	$ (7,262,529)	$ (4,073,307)	$ (10,344,633)	$ (14,621,750)
Net Cash Provided by (Used in) Operating Activities, Total							(8,137,695)	(6,420,035)
Cash and Cash Equivalents, at Carrying Value, Ending Balance	9,105,950			$ 15,289,543			9,105,950	$ 15,289,543	$ 12,581,136
Working Capital	$ 9,800,000						$ 9,800,000