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Note 8 - Convertible Notes - Related Parties (Details Textual)
3 Months Ended 12 Months Ended
Apr. 14, 2022
USD ($)
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Interest Expense, Related Party   $ 89,361 $ 123,236    
Convertible Debt Payable to Related Party [Member]          
Interest Payable, Related Party       $ 1,201,790 $ 1,046,911
Interest Expense, Related Party       229,318 240,797
Debt Instrument, Convertible, Beneficial Conversion Feature       18,141 $ 0
Long-term Debt, Total   $ 162,639   $ 162,639  
Convertible Debt Payable to Related Party [Member] | Joseph Byrne [Member]          
Debt Instrument, Convertible, Number of Equity Instruments   76,123   76,123  
Convertible Debt Payable to Related Party Reclassified to Private Investor [Member]          
Debt Instrument, Convertible, Number of Equity Instruments       170,611  
Convertible Debt Payable to Related Party Reclassified to Private Investor [Member] | Subsequent Event [Member]          
Debt Instrument, Convertible, Number of Equity Instruments 76,123        
Debt Instrument, Debt Default, Amount $ 121,796        
Convertible Debt Payable to Related Party Reclassified to Private Investor [Member] | Joseph Byrne [Member]          
Debt Instrument, Convertible, Number of Equity Instruments       63,997  
Long-term Debt, Total       $ 102,395