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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2022
Fair Value Disclosures [Abstract]  
Schedule of Financial Liabilities Measured at Fair Value on Recurring Basis by Level Within Fair Value Hierarchy

   Fair Value Measurements as of June 30, 2022 
Description  Level 1   Level 2   Level 3   Total 
Derivative liability                    
Common stock warrants  $-   $-   $198   $198 

 

   Fair Value Measurements as of December 31, 2021 
Description  Level 1   Level 2   Level 3   Total 
Derivative liability                    
Common stock warrants  $-   $-   $347   $347 
Schedule of Fair Value Measurement Hierarchy of Derivative Liability

The Company did not have any transfers of assets and liabilities between Level 1 and Level 2 of the fair value measurement hierarchy during the six months ended June 30, 2022, and 2021. The following table presents a reconciliation of the derivative liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the six months ended June 30, 2022, and 2021 (in thousands):

 

   Common Stock
Warrants
 
Balance as of December 31, 2020  $(1,238)
Change in fair value   (256)
Other, net    
Exercise of warrants   195 
Balance as of June 30, 2021  $(1,299)
      
Balance as of December 31, 2021  $(347)
Change in fair value   148 
Other, net   1 
Balance as of June 30, 2022  $(198)
Schedule of Assumptions Used in Estimating Fair Value

The assumptions used in estimating the common stock warrant liability as of June 30, 2022, and December 31, 2021 were as follows:

 

   

June 30,

2022

   

December 31,

2021

 
Weighted-average risk-free interest rate     2.51%-2.99 %     0.06%-0.97 %
Weighted-average expected life (in years)     0.57-2.61       0.07-3.10  
Expected dividend yield     - %     - %
Weighted-average expected volatility     74.9%-127.1 %     71.5%-126.5 %