Note 11 - Commitments - Lease Expense (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash paid for operating lease liabilities	$ 31,882	$ 32,694
Cash paid for finance lease liabilities	$ 2,685	$ 2,685
Finance leases (years) (Year)	9 months 14 days	1 year 9 months 18 days
Operating leases (years) (Year)	3 years	4 years
Weighted-average discount rate – operating leases	9.20%	9.20%
Weighted-average discount rate – finance leases	9.20%	9.20%