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Inventory
 6 Months Ended
Jun. 30, 2016
Inventory.  
Inventory

5.  Inventory

 

Inventory as of June 30, 2016 and December 31, 2015 consists of the following (in thousands):

 

 

 

 

 

 

 

 

 

 

    

June 30, 2016

    

December 31, 2015

 

Raw materials and supplies

 

$
29,128

 

$
23,705

 

Work-in-process

 

 
2,568

 

 
5,567

 

Finished goods

 

 
3,232

 

 
3,480

 

 

 

$
34,928

 

$
32,752