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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)
In Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME        
Foreign currency translation, tax effect (in dollars) $ 706 $ 1,533 $ 1,795 $ 2,444