Note 6 - Leases - Schedule of Lease Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating lease cost	$ 10,015	$ 10,407	$ 20,108	$ 20,502
Finance lease cost:
Amortization of leased assets	0	2,816	0	5,557
Interest on lease liabilities	0	29	0	86
Total finance lease cost	0	2,845	0	5,643
Operating lease cost	$ 10,015	$ 10,407	$ 20,108	$ 20,502