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Accounts Receivable, Net
12 Months Ended
Dec. 31, 2020
Credit Loss, Additional Improvements [Abstract]  
ACCOUNTS RECEIVABLE, NET
3. Accounts receivable, net

 

Accounts receivable, net consist of the following:

 

   December 31,
2020
   December 31,
2019
   December 31,
2018
 
Accounts receivable  $10,242   $8,177   $2,722 
Allowance for doubtful accounts   (7)   (6)   (1)
Total accounts receivable, net  $10,235   $8,171   $2,721 
                
Movements of allowance for doubtful accounts are as follows:               
                
Beginning balance  $6   $1   $- 
Addition   1    5    1 
Ending balance  $7   $6   $1