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Inventories (Tables)
 12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory
    December 31,     December 31,  
    2017     2016  
Raw materials   $ 1,220     $ 1,309  
Work in progress     44       203  
Finished goods     1,139       2,299  
                 
    $ 2,403     $ 3,811