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Note 12 - Commitments and Contingencies (Details Textual)
3 Months Ended
Jan. 22, 2021
shares
Mar. 31, 2022
ft²
shares
Class of Warrant or Right, Issued During Period (in shares)   37,500,000
TLF Bio Innovation, Related Party Warrants [Member]    
Class of Warrant or Right, Issued During Period (in shares) 15,000  
Riverside, Missouri [Member]    
Area of Real Estate Property (Square Foot) | ft²   19,136