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Cash, Cash Equivalents, and Restricted Cash (Tables)
 12 Months Ended
Dec. 31, 2016
Details of Cash, Cash Equivalents, and Restricted Cash
     December 31  
     2015      2016  
     US$      US$  

Cash and deposits in bank

      28,780        58,391  

Time deposits

      151,739        199,064  

Bonds acquired under repurchase agreements

      —          17,028  
  

 

 

     

 

 

  

Total cash and cash equivalents

      180,519        274,483  

Restricted cash (Note 2)

      21,637        46,694  
  

 

 

     

 

 

  
     202,156        321,177