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Inventories (Tables)
 6 Months Ended
Jun. 30, 2016
Inventory Disclosure [Abstract]  
Inventories
Inventories are summarized below (in thousands):
 
June 30,
2016
 
December 31,
2015
Inventories:
 
 
 
Raw materials
$
45,940

 
$
53,876

Work-in-process
525

 
703

Finished goods
104,981

 
154,304

 
$
151,446

 
$
208,883