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Inventories (Tables)
 6 Months Ended
Jun. 30, 2018
Inventory Disclosure [Abstract]  
Schedule of inventories

Inventories consist of the following:

   June 30,
2018		  December 31,
2017
       
Raw materials   $855   $543 
Finished goods    815    863 
    1,670    1,406 
Allowance for excess inventory quantities    (21)   (21)
   $1,649   $1,385