Note 5 - Notes Payable - Notes Payable (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Notes Payable, Gross	$ 0	$ 4,676,755
Less: Unamortized discount	0	(244,830)
Notes Payable	0	4,431,925
Promissory Note, One [Member]
Notes Payable, Gross	0	1,490,833
Promissory Note, Two [Member]
Notes Payable, Gross	0	1,464,146
Convertible Promissory Note [Member]
Notes Payable, Gross	$ 0	$ 1,721,776