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Convertible Preferred Stock (Tables)
6 Months Ended
Jun. 30, 2021
Temporary Equity Disclosure [Abstract]  
Summary of Convertible Preferred Stock
The authorized, issued and outstanding shares of the convertible preferred stock and liquidation preferences at December 31, 2020 were as follows (in thousands except share and per share amounts):
 
December 31, 2020
                                    
Series
  
Shares
Authorized
    
Shares Issued
and
Outstanding
    
Per Share
Liquidation
Preference
    
Aggregate
Liquidation
Amount
    
Proceeds
Net of
Issuance Cost
    
Net
Carrying
Value
 
Series A
     17,000,000        17,000,000      $  1.00      $ 17,000      $  16,982      $  16,982  
Series B
     25,186,738        25,186,738        1.00        25,187        24,943        12,235  
Series
B-1
     93,749,993        72,499,993        0.80        58,000        57,489        57,489  
    
 
 
    
 
 
             
 
 
    
 
 
    
 
 
 
       135,936,731        114,686,731               $  100,187      $ 99,414      $ 86,706