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Comprehensive Income (Loss) (Tables)
9 Months Ended
Sep. 30, 2012
Comprehensive Income (Loss) [Abstract]  
Components of accumulated other comprehensive income
                 
    September 30,
2012
    December 31,
2011
 

Foreign currency translation adjustment

  $ 739     $ 572  

Unrealized investment gain

    41       11  
   

 

 

   

 

 

 

Accumulated other comprehensive income

  $ 780     $ 583  
   

 

 

   

 

 

 
Components of comprehensive loss
                                 
    Three Months Ended     Nine Months Ended  
    September 30,     September 30,  
    2012     2011     2012     2011  

Net loss

  $ (3,549   $ (3,800   $ (2,893   $ (4,546

Unrealized investment (loss) gain

    —         (54     30       (97

Foreign currency translation

    189       (258     167       (149
   

 

 

   

 

 

   

 

 

   

 

 

 

Comprehensive loss

  $ (3,360   $ (4,112   $ (2,696   $ (4,792