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Inventory
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Inventory

 

5. Inventory

Inventory consisted of the following:

 

(in thousands)

 

June 30,

2019

 

 

December 31,

2018

 

Raw materials

 

$

6,672

 

 

$

7,855

 

Work in process

 

 

3,451

 

 

 

2,208

 

Finished goods

 

 

1,895

 

 

 

801

 

Total inventory

 

$

12,018

 

 

$

10,864