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Restructuring (Tables)
3 Months Ended
Mar. 31, 2024
Restructuring [Abstract]  
Restructuring Costs
The Company’s restructuring costs, primarily for cash severance and other severance costs, are allocated to the following operating expense categories as follows (in thousands):

   
Research and
Development
   
Selling,
general and
administrative
   
Total
 
Balance as of December 31, 2023
 
$
513
   
$
6
   
$
519
 
Restructuring charges incurred(1)
   
131
     
-
     
131
 
Cash payments and other adjustments(1)
   
(422
)
   
(6
)
   
(428
)
Balance as of March 31, 2024
 
$
222
   
$
-
   
$
222
 
Current liabilities
                 
$
222
 
Long-term liabilities
                   
-
 
Total liabilities as of March 31, 2024                  
$
222
 

(1)
Restructuring charges incurred and Cash payments and other adjustments include non-cash charges related to stock-based compensation expenses.