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Derivative Instruments (Tables)
12 Months Ended
Dec. 31, 2011
Derivative Instruments  
Summary of fair values of derivative instruments
 
  Asset/(Liability) Derivatives
Fair Value
 
Derivatives not designated as hedging instruments:
  December 31
2011
  December 31,
2010
 

Currency forward contracts

  $ (3 ) $ (9 )
           

Total derivatives not designated as hedging instruments

    (3 )   (9 )
           

Total derivatives

  $ (3 ) $ (9 )
           
Schedule of gain (loss) recognized in income on derivative instruments not designated as hedging instruments
 
  Gain/(Loss)
Recognized in Income
 
Derivatives Not Designated as Hedging Instruments
  2011   2010   2009  

Currency forward contracts

  $ 66   $ 144   $ 270  
               

Total

  $ 66   $ 144   $ 270