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Inventory
 3 Months Ended
Mar. 31, 2017
Inventory Disclosure [Abstract]  
Inventory

3. Inventory

Inventory consisted of the following, in thousands:

 

 

 

March 31,

 

 

December 31,

 

 

 

2017

 

 

2016

 

Raw materials

 

$

2,882

 

 

$

2,553

 

Work in process

 

 

3,955

 

 

 

3,943

 

Finished goods

 

 

218

 

 

 

212

 

Total inventory

 

$

7,055

 

 

$

6,708