Note 4 - Operating Leases - Schedule of Lease Expenses (Details) - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Operating lease expense	$ 39,426	$ 36,813
Variable lease expense	11,360	12,106
Total lease expense	50,786	48,919
Operating cash flow from operating leases	$ 37,920	$ 32,793
Weighted average remaining lease term - operating leases (years) (Year)	5 years 2 months 12 days	5 years 7 months 6 days
Weighted average discount rate - operating leases	5.90%	5.70%