Inventory (Tables)
 12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
Summary of Inventory

Inventory consists of the following:

 

     As of December 31,  
     2015      2014  
     (in thousands)  

Raw materials

    $ 3,062       $ 3,367   

Work-in-process

      2,681         3,464   

Finished products

      9,462         9,883   
  

 

 

     

 

 

  

Total inventory

    $ 15,205       $ 16,714