Related Party Transactions (Tables)
12 Months Ended
Dec. 31, 2021
Related Party Transactions [Abstract]  
Schedule of Significant Related Party Transactions
For the years ended December 31, 2019, 2020 and 2021, the significant related party transactions and balances were as follows:
 
 
  
Year Ended December 31,
 
 
  
2019
 
 
  
 
  
2020
 
 
  
 
  
2021
 
 
  
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
  
(US$)
 
Rental fee charged by a related party
     168                202                216  
Consideration to a related party for Netless acquisition
     —                  1,300