Note 4 - Operating Leases - Schedule of Lease Expenses (Details) - USD ($)	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Operating lease expense	$ 113,632	$ 92,127
Variable lease expense	34,265	25,869
Total lease expense	147,897	117,996
Operating cash flow from operating leases	87,726	117,996
Right of use asset in exchange for new lease liabilities	$ 41,630	$ 349,031
Weighted average remaining lease term - operating leases (years) (Year)	5 years 4 months 24 days	5 years 9 months 18 days
Weighted average discount rate - operating leases	5.80%	5.60%