Note 13 - Commitments and Contingencies (Details Textual) - USD ($)		3 Months Ended		6 Months Ended
	Mar. 01, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Lessee, Operating Lease, Monthly Rent Payments	$ 750
Operating Lease, Expense		$ 3,300	$ 14,700	$ 13,300	$ 29,400
Operating Lease, Weighted Average Remaining Lease Term (Year)		4 years		4 years
Operating Lease, Weighted Average Discount Rate, Percent		11.30%		11.30%
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year		$ 4,968	4,968	$ 4,968	4,968
Lessee, Operating Lease, Liability, Undiscounted Excess Amount		242		242
Operating Lease, Payments		3,700	14,700	14,388	28,200
Short-term Lease, Cost		$ 6,931	$ 4,488	$ 12,170	$ 8,873