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Inventory (Tables)
12 Months Ended
Dec. 31, 2014
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventory consists of the following (in thousands):
 
December 31,
 
2014
 
2013
Raw materials
$
1,118

 
$
529

Work in process
2,845

 
2,280

Finished goods
559

 
81

Total
4,522

 
2,890

Less: non-current portion included in other assets
(2,141
)
 

Inventory
$
2,381

 
$
2,890