Note 11 - Commitments - Lease Expense (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Cash paid for operating lease liabilities	$ 30,373	$ 34,320	$ 95,645	$ 98,083
Cash paid for finance lease liabilities	$ 2,685	$ 2,685	$ 8,055	$ 8,055
Finance leases (years) (Year)	3 months 14 days	1 year 3 months 18 days	3 months 14 days	1 year 3 months 18 days
Operating leases (years) (Year)	2 years 6 months	3 years 6 months	2 years 6 months	3 years 6 months
Weighted-average discount rate – operating leases	9.20%	9.20%	9.20%	9.20%
Weighted-average discount rate – finance leases	9.20%	9.20%	9.20%	9.20%