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Note 12 - Fair Value - Unobservable Inputs (Details)
Mar. 31, 2024
Dec. 31, 2023
New Avenue Warrant [Member] | Measurement Input, Price Volatility [Member] | Minimum [Member]    
Derivative, measurement input 1.05 1.05
New Avenue Warrant [Member] | Measurement Input, Price Volatility [Member] | Maximum [Member]    
Derivative, measurement input 1.20 1.10
New Avenue Warrant [Member] | Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]    
Derivative, measurement input 0.0428 0.0388
New Avenue Warrant [Member] | Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]    
Derivative, measurement input 0.0538 0.0503
New Avenue Warrant [Member] | Measurement Input, Expected Dividend Rate [Member]    
Derivative, measurement input 0 0
New Avenue Warrant [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Derivative, measurement input 0.5 0.75
New Avenue Warrant [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Derivative, measurement input 4.25 4.5
New Avenue Warrant [Member] | Measurement Input, Probability of Change of Control [Member]    
Derivative, measurement input 0.20 0.25
New Avenue Warrant [Member] | Measurement Input, Probability of Dissolution [Member]    
Derivative, measurement input 0.50 0.50
New Avenue Warrant [Member] | Measurement Input, Probability of Other Outcome [Member]    
Derivative, measurement input 0.30 0.25
Tranche A Warrant [Member] | Measurement Input, Price Volatility [Member] | Minimum [Member]    
Derivative, measurement input 1 1
Tranche A Warrant [Member] | Measurement Input, Price Volatility [Member] | Maximum [Member]    
Derivative, measurement input 1.05 1.10
Tranche A Warrant [Member] | Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]    
Derivative, measurement input 0.0455 0.0413
Tranche A Warrant [Member] | Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]    
Derivative, measurement input 0.0515 0.0474
Tranche A Warrant [Member] | Measurement Input, Expected Dividend Rate [Member]    
Derivative, measurement input 0 0
Tranche A Warrant [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]    
Derivative, measurement input 0.83 1.08
Tranche A Warrant [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]    
Derivative, measurement input 2.21 2.46
Tranche A Warrant [Member] | Measurement Input, Probability of NDA Acceptance [Member]    
Derivative, measurement input 0.20 0.20
Tranche A Warrant [Member] | Measurement Input, Probability of Dissolution [Member]    
Derivative, measurement input 0.50 0.50
Tranche A Warrant [Member] | Measurement Input, Probability of Fundamental Transaction [Member]    
Derivative, measurement input 0.20 0.25
Tranche A Warrant [Member] | Measurement Input, Probability of Other Outcome [Member]    
Derivative, measurement input 0.10 0.05
Contingent Earnout Shares [Member] | Measurement Input, Price Volatility [Member]    
Derivative, measurement input 0.975 1.15
Contingent Earnout Shares [Member] | Measurement Input, Risk Free Interest Rate [Member]    
Derivative, measurement input 0.047 0.042
Contingent Earnout Shares [Member] | Measurement Input, Expected Dividend Rate [Member]    
Derivative, measurement input   0
Contingent Earnout Shares [Member] | Measurement Input, Expected Dividend Rate [Member] | Minimum [Member]    
Derivative, measurement input 0  
Contingent Earnout Shares [Member] | Measurement Input, Expected Term [Member]    
Derivative, measurement input 1.75 2