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Fair Value of Measurements - Valuation techniques and the inputs (Details)
$ in Thousands
Mar. 31, 2024
USD ($)
$ / shares
Y
Dec. 31, 2023
USD ($)
Binomial Lattice Model ("BLM") | Exercise price | Public warrants    
Fair Value of Measurements    
Warrant liabilities, measurement input | $ / shares 11.50  
Binomial Lattice Model ("BLM") | Term to expiration | Public warrants    
Fair Value of Measurements    
Warrant liabilities, measurement input | Y 5.0  
Black Scholes Merton Model ("BSM") or BLM | Exercise price | Private placement warrants    
Fair Value of Measurements    
Warrant liabilities, measurement input | $ / shares 11.50  
Black Scholes Merton Model ("BSM") or BLM | Term to expiration | Private placement warrants    
Fair Value of Measurements    
Warrant liabilities, measurement input | Y 5  
Black Scholes Merton Model ("BSM") or BLM | Volatility | Private placement warrants    
Fair Value of Measurements    
Warrant liabilities, measurement input 0.194  
Black Scholes Merton Model ("BSM") or BLM | Risk-free rate | Private placement warrants    
Fair Value of Measurements    
Warrant liabilities, measurement input 0.042  
Convertible promissory notes, current | Discounted Cash Flow Model ("DCF") | Level 3    
Fair Value of Measurements    
Fair value | $ $ 5,645  
Convertible promissory notes, current | Discounted Cash Flow Model ("DCF") | Discount factor    
Fair Value of Measurements    
Convertible promissory notes, measurement input 0.102  
Convertible promissory notes, current | Discounted Cash Flow Model ("DCF") | Remaining term    
Fair Value of Measurements    
Convertible promissory notes, measurement input | Y 0.25  
Convertible promissory notes, current | PWERM | Level 3    
Fair Value of Measurements    
Fair value | $   $ 27,794
Convertible promissory notes, net of current | PWERM | Level 3    
Fair Value of Measurements    
Fair value | $   $ 6,239
Convertible promissory notes, net of current | Binomial Lattice Model ("BLM") | Level 3    
Fair Value of Measurements    
Fair value | $ $ 4,672  
Convertible promissory notes, net of current | Binomial Lattice Model ("BLM") | Stock price    
Fair Value of Measurements    
Convertible promissory notes, measurement input | $ / shares 6.58  
Convertible promissory notes, net of current | Binomial Lattice Model ("BLM") | Remaining term    
Fair Value of Measurements    
Convertible promissory notes, measurement input | Y 1.9  
Convertible promissory notes, net of current | Binomial Lattice Model ("BLM") | Credit spread    
Fair Value of Measurements    
Convertible promissory notes, measurement input 0.050  
Convertible promissory notes, net of current | Binomial Lattice Model ("BLM") | Volatility    
Fair Value of Measurements    
Convertible promissory notes, measurement input 0.322  
Convertible promissory notes, net of current | Binomial Lattice Model ("BLM") | Risk-free rate    
Fair Value of Measurements    
Convertible promissory notes, measurement input 0.046  
Warrant liabilities - private and public warrants | Black Scholes Merton Model ("BSM") or BLM | Level 3    
Fair Value of Measurements    
Fair value | $ $ 9,150  
Warrant liabilities - other | Level 3    
Fair Value of Measurements    
Fair value | $ $ 1,434  
Warrant liabilities - other | Black Scholes Merton Model ("BSM") or BLM | Exercise price | Minimum    
Fair Value of Measurements    
Warrant liabilities, measurement input | $ / shares 5.00  
Warrant liabilities - other | Black Scholes Merton Model ("BSM") or BLM | Exercise price | Weighted average    
Fair Value of Measurements    
Warrant liabilities, measurement input | $ / shares 10.00  
Warrant liabilities - other | Black Scholes Merton Model ("BSM") or BLM | Exercise price | Maximum    
Fair Value of Measurements    
Warrant liabilities, measurement input | $ / shares 18.75  
Warrant liabilities - other | Black Scholes Merton Model ("BSM") or BLM | Term to expiration | Minimum    
Fair Value of Measurements    
Warrant liabilities, measurement input | Y 0.4  
Warrant liabilities - other | Black Scholes Merton Model ("BSM") or BLM | Term to expiration | Maximum    
Fair Value of Measurements    
Warrant liabilities, measurement input | Y 2.6  
Warrant liabilities - other | Black Scholes Merton Model ("BSM") or BLM | Volatility | Minimum    
Fair Value of Measurements    
Warrant liabilities, measurement input 0.295  
Warrant liabilities - other | Black Scholes Merton Model ("BSM") or BLM | Volatility | Maximum    
Fair Value of Measurements    
Warrant liabilities, measurement input 0.327  
Warrant liabilities - other | Black Scholes Merton Model ("BSM") or BLM | Risk-free rate | Minimum    
Fair Value of Measurements    
Warrant liabilities, measurement input 0.044  
Warrant liabilities - other | Black Scholes Merton Model ("BSM") or BLM | Risk-free rate | Maximum    
Fair Value of Measurements    
Warrant liabilities, measurement input 0.054