Note 6 - Leases - Schedule of Lease Expense (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating lease cost	$ 9,791	$ 10,150	$ 29,899	$ 30,652
Finance lease cost:
Amortization of leased assets	0	0	0	5,557
Interest on lease liabilities	0	0	0	86
Total finance lease cost	0	0	0	5,643
Operating lease cost	$ 9,791	$ 10,150	$ 29,899	$ 30,652