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Inventories (Tables)
12 Months Ended
Dec. 31, 2018
Inventories [Abstract]  
Inventories
Inventories:
 
  
December 31, 2018
  
December 31, 2017
 
       
Raw materials and work in progress
 
$
2,442
  
$
2,490
 
Finished goods
  
352
   
519
 
  
$
2,794
  
$
3,009