Note 6 - Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Accrued payroll and director fees	$ 551,762	$ 1,732,702
Other accrued expenses	27,823	118,338
Total accrued expenses	$ 579,585	$ 1,851,040