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Inventory (Tables)
12 Months Ended
Dec. 31, 2016
Inventory Disclosure [Abstract]  
Inventory

Inventory consisted of the following at December 31, 2016 and 2015 (in thousands).

 

  

 

2016

 

 

2015

 

Work-in-process

 

$

1,803

 

 

$

 

Raw materials and supplies

 

 

18,388

 

 

 

14,716

 

Inventory

 

$

20,191

 

 

$

14,716