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Inventory (Tables)
 9 Months Ended
Sep. 30, 2017
Inventory Disclosure [Abstract]  
Inventory

Inventory consists of the following (in thousands):

 

 

 

September 30, 2017

 

 

December 31, 2016

 

Raw materials

 

$

1,751

 

 

$

2,055

 

Work-in-process

 

 

8,398

 

 

 

7,311

 

Finished goods

 

 

3,505

 

 

 

1,743

 

Total inventory

 

$

13,654

 

 

$

11,109