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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of financial assets and liabilities
   December 31, 2021
   Level 1  Level 2  Level 3  Total
             
Financial assets            
    Money market funds  $83,701   $
   $
   $83,701 
Total fair value of assets  $83,701   $
   $
   $83,701 
                     
Financial liabilities                    
    Common stock warrant liability  $7,350   $
   $
   $7,350 
    Earnout liability   
    
    5,743    5,743 
Total fair value of financial liabilities  $7,350   $
   $5,743   $13,093 

 

   December 31, 2020
   Level 1  Level 2  Level 3  Total
             
Financial assets            
    Money market funds  $18,778   $
   $
   $18,778 
Total fair value of assets  $18,778   $
   $
   $18,778 
                     
Financial liabilities                    
    Derivative liability  $
   $
   $8,158    8,158 
Total fair value of financial liabilities  $
   $
   $8,158   $8,158 

 

Schedule of changes in the fair value
   Derivative tranche liability   Earnout Liability 
Fair Value as of January 1, 2020  $4,053   $
 
Initial fair value of derivative instrument   
    
 
Change in the fair value included in other expense   10,875    
 
Settlement of obligation   (6,770)   
 
Fair Value as of December 31, 2020  $8,158   $
 
           
Fair Value as of January 1, 2021  $8,158   $
 
Initial fair value of earnout liability   
    15,020 
Change in the fair value included in other expense (income)   3,501    (9,277)
Settlement of obligation   (11,659)   
 
Fair Value as of December 31, 2021  $
   $5,743 

 

Schedule of fair value measurements
   Fair value (in thousands)  

Valuation methodology

  Significant unobservable input
Earnout liability  $5,743  

Monte Carlo Simulation

  Common stock price    $7.85 
           Expected term (in years)     2.73 
           Expected volatility     74.00%
           Risk-free interest rate     0.90%

 

   Fair value (in thousands)   Valuation methodology  Significant unobservable input
Derivative tranche liability  $8,158   Black-Scholes  Expected term (in years)   0.16 
           Expected volatility   47.02%
           Risk-free interest rate   0.08%
           Expected dividend yield   0.00%