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Inventory (Tables)
 6 Months Ended
Jun. 30, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventory consists of the following (in thousands):
 
June 30,
2017
 
December 31,
2016
Raw materials
$
528

 
$
863

Work in process
3,919

 
2,343

Finished goods
1,121

 
738

Total
5,568

 
3,944

Less: non-current portion included in Other assets
(143
)
 
(606
)
Inventory, net
$
5,425

 
$
3,338