Note 2 - Going Concern (Details Textual) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Net Income (Loss) Attributable to Parent, Total	$ (3,906,142)	$ (2,947,420)	$ (7,262,529)	$ (4,073,307)	$ (6,853,562)	$ (11,335,836)
Net Cash Provided by (Used in) Operating Activities, Total					(5,459,417)	(4,651,051)
Cash and Cash Equivalents, at Carrying Value, Ending Balance	7,462,736		$ 17,058,527		7,462,736	$ 17,058,527	$ 12,581,136
Working Capital	$ 8,200,000				$ 8,200,000