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Accrued Expenses and Other Current Liabilities (Tables)
 12 Months Ended
Dec. 31, 2014
Accrued Expenses and Other Current Liabilities
     December 31  
     2013      2014  
     US$      US$  

Wages and bonus

      6,741         12,093   

Research and development payable

      3,012         2,468   

License fees and royalties

      2,637         2,982   

Professional fees

      1,765         1,714   

Equipment

      359         1,170   

Others

      3,096         3,219   
  

 

 

     

 

 

  
  17,610      23,646