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INVENTORY (Tables)
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Components of Inventory
The components of inventory follow:
 
March 31,
2018
 
December 31,
2017
Raw materials
$
1,019

 
$
953

Work-in-process
523

 
471

Finished goods
1,203

 
1,196

Total inventory
$
2,745

 
$
2,620