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Warrants Classified as Liabilities (Tables)
9 Months Ended
Sep. 30, 2024
Warrants Classified as Liabilities [Abstract]  
Schedule of Purchase Warrants outstanding As of September 30, 2024 and December 31, 2023, the Company had the following Purchase Warrants outstanding (share amounts in thousands):
   Number of
Shares
   Exercise
Price
   Expiration Date
Warrants issued - November 2022   92   $40.00   May 28, 2028
Warrants issued - June 2023   143   $28.00   June 2, 2028
    235         
Schedule of Fair Value of Purchase Warrants outstanding The following table sets forth changes in the fair value of the Purchase Warrants outstanding (amounts in thousands):
   Number of Shares   Fair Value 
Balance as of December 31, 2023   235   $1,748 
Change in fair value of warrants       (1,591)
Balance as of March 31, 2024   235    157 
Change in fair value of warrants       (54)
Balance as of June 30, 2024   235    103 
Change in fair value of warrants       (4)
Balance as of September 30, 2024   235   $99 
Schedule of Black Scholes Model The fair value of the Purchase Warrants at September 30, 2024 was determined using the Black Scholes model with the assumptions in the following table.
   2022
Purchase
Warrant
   2023
Purchase
Warrant
 
Expected term based on contractual term    3.7 years     3.7 years 
Interest rate (risk-free rate)   3.51%   3.51%
Expected volatility   121%   121%
Expected dividend yield        
Fair value of warrants (in thousands)  $35   $64 
The fair value of the Purchase Warrants at December 31, 2023 was determined using the Black Scholes model with the assumptions in the following table.
   2022
Purchase
Warrant
   2023
Purchase
Warrant
 
Expected term based on contractual term   4.4 years    4.4 years 
Interest rate (risk-free rate)   3.84%   3.84%
Expected volatility   116%   116%
Expected dividend yield        
Fair value of warrants (in thousands)  $653   $1,095