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Inventory
9 Months Ended 12 Months Ended
Sep. 26, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Inventory
3.
INVENTORY
Inventories of the Company consisted of the following:
 
     September 26,      December 31,  
     2021      2020  
Raw materials
   $ 48,665      $ 44,474  
Work-in-process
     18,960        12,946  
Finished goods
     96,718        76,508  
  
 
 
    
 
 
 
   $ 164,343      $ 133,928  
  
 
 
    
 
 
 
4.
INVENTORY
Inventories of the Company consisted of the following:
 
     2020      2019  
Raw materials
   $ 44,474      $ 44,146  
Work-in-process
     12,946        14,164  
Finished goods
     76,508        63,686  
  
 
 
    
 
 
 
   $ 133,928      $ 121,996