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Inventory (Tables)
 12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventory consists of the following:
 
December 31,
 
2017
 
2016
Raw material
$
2,489

 
$
1,131

Work in process
931

 
900

Finished products
1,698

 
708

 
$
5,118

 
$
2,739