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Inventories (Tables)
 6 Months Ended
Jun. 30, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory

Inventories consist of the following (in thousands):

 

 

 

June 30,

2017

 

 

December 31,

2016

 

Raw materials

 

$

785

 

 

$

856

 

Work in process

 

 

4,050

 

 

 

3,806

 

Finished goods

 

 

377

 

 

 

959

 

Total

 

$

5,212

 

 

$

5,621