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Restructuring Charges (Tables)
9 Months Ended
Sep. 30, 2023
Restructuring and Related Activities [Abstract]  
Changes in Accrued Restructuring Balance
The following table summarizes the changes in the Company’s accrued restructuring balance (in thousands):
 
     Beginning Balance
December 31, 2022
     Charges      Payments      Ending Balance
September 30, 2023
 
Severance liability
   $ —        $ 6,448      $ (4,527    $ 1,921  
Charges Related to the Restructuring Activities A summary of the charges related to the restructuring activities is as follows (in thousands):
 
    Severance Related
Expenses
    Stock Compensation
Expenses
    Loss on Disposal of
Long Lived Assets
    Lease Asset
Impairment
    Total Restructuring Costs  
Research and development
  $ 3,182     $ 123     $ 749     $ 1,405     $ 5,459  
General and administrative
    3,266       870       182       1,175       5,493  
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Total
  $ 6,448     $ 993     $ 931     $ 2,580     $ 10,952