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Inventories
9 Months Ended
Sep. 30, 2017
Inventory Items, Net Of Reserves Alternative [Abstract]  
Inventories Disclosure

3  Inventories

 

Inventories are classified as follows (in thousands):

   September 30, 2017 December 31, 2016
Raw materials $99,832 $95,430
Work in progress  20,205  16,585
Finished goods  177,817  150,667
 Total inventories $297,854 $262,682