Note 7 - Loans Payable (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($) shares	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($) shares
Stock Issued During Period, Value, New Issues	$ 23,673	$ 32,400	$ 127,023	$ 97,200
Short-term Loan Payable to Private Investors [Member]
Debt Instrument, Convertible, Beneficial Conversion Feature	$ 1,209,484		$ 1,459,484
Debt Instrument, Convertible, Number of Equity Instruments	549,830		677,955
Individual Lenders [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares	18,000	18,000	54,000	54,000
Stock Issued During Period, Value, New Issues	$ 10,926	$ 12,960	$ 52,266	$ 38,880