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Note 2 - Cash, Cash Equivalents, and Restricted Cash (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Dec. 03, 2020
Cash, Uninsured Amount $ 7,259,304   $ 7,259,304   $ 6,756,207  
Asset Pledged as Collateral [Member] | Credit Card Limits [Member]            
Cash Equivalents, at Carrying Value 530,000   530,000      
Restricted Cash Equivalents 193,832   193,832   40,982  
Danone Manifesto Ventures, PBC [Member] | Three COVID-19 Relief Projects [Member]            
Other Commitment           $ 298,103
Restricted Cash 99,525   99,525   $ 99,525  
Payments for Other Commitment $ 0 $ 0 $ 0 $ 0