Note 13 - Commitments and Contingencies (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	May 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Operating Lease Right of Use Asset	$ 20,200
Operating Lease, Expense		$ 56,800	$ 56,200
Operating Lease, Weighted Average Remaining Lease Term (Year)		4 years 36 days
Operating Lease, Weighted Average Discount Rate, Percent		11.30%
Lessee, Operating Lease, Liability, to be Paid, Year One		$ 19,400
Lessee, Operating Lease, Liability, Undiscounted Excess Amount		1,400	6,100
Operating Lease, Payments		54,900	58,800
Short-term Lease, Cost		17,739	$ 12,825
Lessee, Operating Lease, Monthly Rent Payments		$ 750
Increase (Decrease) in Operating Lease Liability	$ 20,200