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Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Foreign Currency Translation Adjustments, Tax $ (1,020) $ 576 $ (796) $ 438
Unrealized Loss on Derivatives Designated as Hedges, Tax       $ 7