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PREPAIDS AND OTHER CURRENT ASSETS
12 Months Ended
Dec. 31, 2021
Prepaid Expense and Other Assets, Current [Abstract]  
PREPAIDS AND OTHER CURRENT ASSETS
7.
PREPAIDS AND OTHER CURRENT ASSETS
Prepaids and other current assets as of December 31, 2021 and 2020 consisted of the following:
 
    
December 31,
 
    
2021
    
2020
 
Prepaid expenses
   $ 14,787      $ 2,628  
Government grant receivables
     2,563        5,870  
Other current assets
     2,104        914  
    
 
 
    
 
 
 
Total prepaids and other current assets
   $ 19,454      $ 9,412