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INVENTORIES (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of the components of inventories

The components of inventories are summarized below:

 

    March 31,     December 31,  
    2021     2020  
Raw materials   $ 1,719     $ 1,719  
Work in process     2,225       1,420  
Provision for excess and obsolete inventory     (761 )     (736 )
Total inventories   $ 3,183     $ 2,403