Income Tax Benefit/Expense

9 Months Ended

Sep. 30, 2011

Income Tax Benefit/Expense [Abstract]

Income Tax Benefit/Expense

5.

Income Tax Benefit/Expense

Income tax expense was $15.0 million for the third quarter of 2011, as compared to income tax expense of $0.8 million for the third quarter of 2010. The increase in income tax expense in the third quarter of 2011 compared with the third quarter of 2010 was primarily the result of an increase in income before income taxes, differences in the mix of our domestic and international pre-tax earnings and losses, and the mix of international tax jurisdictions in which we operate.