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Inventories
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories

The components of inventories consisted of:
 
June 30, 2019
 
December 31, 2018
Finished goods
$
80,125


$
87,779

Work-in-process
98,954

 
98,426

Raw material and supplies
80,606

 
79,785

 
$
259,685


$
265,990