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Stockholders' Equity (Deficit) (Tables)
 6 Months Ended
Jun. 30, 2021
Federal Home Loan Banks [Abstract]  
Summary of Preferred Stock Allocated to Investors The Purchase Agreement provides for the Company to issue and sell to the Investor shares of the Company’s preferred stock in the amounts set forth in the following table (numbers have been adjusted for the February 2016 reverse stock split):
Convertible Preferred Stock
   
Shares
     
Price Per Share
     
Total
Investment
  
Series
AA-1
      8,427,004      $  12.00      $ 101,124,048  
Series
AA-2
      7,223,145      $ 6.00        43,338,870  
    
 
 
              
 
 
  
       15,650,149              
$
 144,462,918