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Foreign Currency Forward Exchange Contracts
6 Months Ended
Jun. 30, 2011
Foreign Currency Forward Exchange Contracts [Abstract]  
Foreign Currency Forward Exchange Contracts
14. Foreign Currency Forward Exchange Contracts
We use forward exchange contracts to hedge certain of the foreign currency transaction exposures primarily related to our United Kingdom operations. We estimate our projected revenues and purchases in certain foreign currencies or locations and will hedge a portion or all of the anticipated long or short positions. As of June 30, 2011, we did not have any derivatives designated as hedging instruments. As of June 30, 2010, our forward foreign exchange contracts have been marked-to-market and the fair value of contracts recorded in the consolidated balance sheets with the offsetting non-cash gain or loss recorded in our consolidated statements of operations. We do not hold or issue foreign exchange options or forward contracts for trading purposes.
The following table summarizes the effect of derivative instruments on the consolidated statements of operations for derivatives not designated as hedging instruments (in thousands):
                                         
            Three Months Ended June 30,   Six Months Ended June 30,
    Location of Gain   2011   2010   2011   2010
    Recognized in Income on   Amount of Gain Recognized in Income   Amount of Gain Recognized in Income
    Derivatives   on Derivatives   on Derivatives
Foreign exchange contracts
  Other income   $     $ 1,287     $     $ 2,355