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Comprehensive Income (Loss) (Tables)
6 Months Ended
Jun. 30, 2011
Comprehensive Income (Loss)  
Components of Comprehensive Income (Loss)
   
Three Months Ended June 30,
   
Six Months Ended June 30,
 
   
2011
   
2010
   
2011
   
2010
 
Net income (loss)
 
$
2,166
   
$
(117
)
 
$
26,894
   
$
(2,568
)
Foreign currency translation adjustments
   
400
     
(2,069
)
   
1,581
     
(659
)
Unrealized gain (loss) on securities
   
77
     
(12
)
   
165
     
3
 
Reversal of unrealized gain on securities sold
   
(314
)
   
     
(178
)
   
(589
)
                                 
Total comprehensive income (loss) 
 
$
2,329
   
$
(2,198
)
 
$
28,462
   
$
(3,813
)