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Income Taxes (Income from Continuing Operations before Income Tax Expense) (Details) (USD $)
In Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Income Taxes        
United States $ (3,530) $ (2,486) $ (5,414) $ (10,159)
Outside the United States 29,661 26,766 68,573 62,645
Income from continuing operations before income tax expense $ 26,131 $ 24,280 $ 63,159 $ 52,486