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Inventories (Tables)
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Summary of Inventories
Inventories consist of the following:
 
Years Ended December 31,
 
 
        2019        
 
 
        2018        
 
Raw material
  $
288,771
    $
235,593
 
Work-in-process
   
79,367
     
61,908
 
Finished goods
   
94,008
     
87,188
 
                 
  $
462,146
    $
384,689