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Inventory (Tables)
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventory consisted of the following as of March 31, 2022 and December 31, 2021, respectively (in thousands):
 
    
March 31, 2022
    
December 31, 2021
 
Raw materials
   $ 2,513      $ 2,292  
Work in progress
     677        578  
Finished goods
     105        372  
    
 
 
    
 
 
 
Total inventory
   $ 3,295      $ 3,242