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Note 7 - Convertible Credit Line Payable - Related Party (Details Textual) - USD ($)
9 Months Ended 12 Months Ended
Aug. 08, 2021
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2019
Jun. 01, 2021
Dec. 31, 2020
Sep. 01, 2017
Proceeds from Convertible Debt   $ 20,000 $ 8,500        
Amortization of Debt Discount (Premium)   4,215 14,926        
Convertible Credit Line Payable, Related Party [Member]              
Debt Instrument, Face Amount         $ 1,500,000   $ 500,000
Long-term Line of Credit, Total $ 168,328 0         $ 87,366
Debt Instrument, Interest Rate, Stated Percentage         7.00%   7.00%
Debt Instrument, Convertible, Conversion Price (in dollars per share)         $ 4.00   $ 1.50
Debt Instrument, Unamortized Discount, Total 13,901         $ 2,754 $ 87,366
Debt Instrument Discount, Additions 15,362   5,851 $ 7,568      
Proceeds from Convertible Debt 20,000   8,500        
Amortization of Debt Discount (Premium) $ 1,461 $ 2,754 $ 14,926