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Note 12 - Note Payable (Details Textual) - USD ($)
1 Months Ended
Jan. 31, 2020
Jun. 30, 2022
Jul. 31, 2019
Loan Arrangement for Line of Equipment, One [Member]      
Debt Instrument, Face Amount     $ 249,100
Long-Term Debt, Total   $ 0  
Loan Arrangement for Line of Equipment, Two [Member]      
Debt Instrument, Face Amount $ 35,660    
Long-Term Debt, Total   $ 5,051  
Loan Arrangement for Line of Equipment, Two [Member] | Notes Payable [Member]      
Debt Instrument, Term (Month) 48 months    
Debt Instrument, Interest Rate, Stated Percentage 6.20%    
Debt Instrument, Periodic Payment, Total $ 841