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Inventory (Tables)
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory

Inventory consists of the following (in thousands):

 

 

 

June 30, 2019

 

 

December 31, 2018

 

Raw materials

 

$

9,349

 

 

$

10,112

 

Work in process

 

 

13,026

 

 

 

20,604

 

Finished goods

 

 

6,895

 

 

 

8,316

 

Total inventory

 

$

29,270

 

 

$

39,032