Note 6 - Leases - Schedule of Supplemental Balance Sheet Information (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Operating lease right-of-use assets	$ 42,569	$ 61,040
Current portion of operating lease obligations	36,972	36,123
Operating Lease, Liability, Noncurrent	5,274	25,187
Total	42,246	61,310
Property and equipment, at cost	53,558	53,885
Accumulated depreciation	(53,558)	(53,885)
Current portion of finance lease obligations	0	0
Finance lease obligations, net of current portion	0	0
Total finance lease liabilities	0	0
Property Plant and Equipment, Net [Member]
Property and equipment, net	$ 0	$ 0