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Inventory (Tables)
9 Months Ended
Sep. 30, 2018
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventory consisted of the following:
 
September 30,
2018
 
December 31, 2017
Raw materials
$
1,900

 
$
1,385

Work-in-process
2,613

 
628

Finished goods
2,496

 

Total inventory
$
7,009

 
$
2,013