Long-term investments (Tables)
 12 Months Ended
Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]  
Schedule Of Equity Method Investments The following table sets forth a breakdown of the long-term investments held by the Company as of December 31, 2021:
    
As of

December 31,
2021
  
     (US$ thousand)  
Equity investments without readily determinable fair value
   
$
 36,025  
Equity method investments
      12,704  
Debt security
      5,196  
    
 
 
  
    
$
 53,925