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Inventories (Tables)
3 Months Ended
Mar. 31, 2016
Inventory Disclosure [Abstract]  
Inventories
Inventories consisted of the following: 
 
March 31, 2016
 
December 31, 2015
Raw materials
$
48,855

 
$
52,647

Work in process
8,372

 
8,776

Finished goods
14,185

 
14,235

 
$
71,412

 
$
75,658