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Note 6 - Anfield Debt Settlement and Property Swap - Fair Value Assumptions (Details) - Anfield Warrant [Member]
Jun. 07, 2022
Measurement Input, Risk Free Interest Rate [Member]  
Warrants, measurement input 0.0293
Measurement Input, Price Volatility [Member]  
Warrants, measurement input 0.6494
Measurement Input, Expected Term [Member]  
Warrants, measurement input 4.94
Measurement Input, Expected Dividend Rate [Member]  
Warrants, measurement input 0