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Note 5 - Note Payable (Details Textual) - USD ($)
9 Months Ended
Mar. 31, 2012
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Apr. 01, 2017
Proceeds from Notes Payable, Total   $ 306,688 $ 20,288    
Notes Payable, Other Payables [Member]          
Proceeds from Notes Payable, Total $ 1,000,000        
Debt Instrument, Interest Rate, Stated Percentage 8.00%       10.00%
Debt Instrument, Interest Rate, Default Percentage 10.00%        
Long-term Debt, Gross   $ 2,272,237   $ 2,109,857