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Inventories (Tables)
6 Months Ended
Jun. 30, 2016
Inventory Disclosure [Abstract]  
Inventories
Inventories consisted of the following: 
 
June 30, 2016
 
December 31, 2015
Raw materials
$
45,019

 
$
52,647

Work in process
7,660

 
8,776

Finished goods
14,298

 
14,235

 
$
66,977

 
$
75,658