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INVENTORIES (Tables)
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Schedule of the components of inventories

 The components of inventories are summarized below:

  

    March 31,     December 31,  
    2018     2017  
    (Unaudited)        
Raw materials   $ 10,018     $ 9,229  
Work in process     3,958       3,295  
Finished goods     10,924       10,919  
Provision for excess and obsolete inventory     (330 )     (251 )
Total inventories   $ 24,570     $ 23,192