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Inventories, net
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Inventories, net
7) Inventories, net

Inventories consist of the following:

 

     March 31, 2018      December 31, 2017  

Raw materials

   $ 203,520      $ 191,351  

Work-in-process

     62,212        54,050  

Finished goods

     99,977        93,680  
  

 

 

    

 

 

 
   $ 365,709      $ 339,081