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Inventories (Tables)
12 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Schedule of inventories

   December 31, 
   2018   2017 
         
Raw materials   3,853    3,621 
Work in process   -    149 
Finished goods   2,579    2,781 
           
    6,432    6,551