Note 13 - Commitments and Contingencies (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lessee, Operating Lease, Monthly Rent Payments			$ 750
Operating Lease, Expense	$ 3,500	$ 14,200	$ 16,800	$ 46,300
Operating Lease, Weighted Average Remaining Lease Term (Year)	1 year		1 year
Operating Lease, Weighted Average Discount Rate, Percent	11.30%		11.30%
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year	$ 1,200		$ 1,200
Operating Lease, Payments	3,700	12,900	18,100	42,300
Short-term Lease, Cost	$ 6,931	$ 4,488	$ 19,100	$ 13,251