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Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Inventories  
Schedule of inventory
    
As of
 
    
June 30, 2021
    
December 31, 2020
 
    
            $            
    
            $            
 
Finished goods
     4,477        3,041  
Raw materials
     6,269        10,103  
Work in process
     368        —    
    
 
 
    
 
 
 
Inventories
     11,114        13,144