Income Taxes

6 Months Ended

Jun. 30, 2012

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The effective tax rates of (35.3)% and 44.1%, respectively, for the three months ended June 30, 2012 and 2011 and the effective tax rates of (311.2)% and 99.2%, respectively, for the six months ended June 30, 2012 and 2011 were determined using an estimated annual effective tax rate and after considering any discrete items for such periods. Due to a valuation allowance against our U.S. deferred tax assets, the effective tax rate for the three and six months ended June 30, 2012 and 2011 does not include the benefit of the current year U.S. tax loss. Income tax expense for the three and six months ended June 30, 2012 and 2011 is primarily due to income tax expense in foreign jurisdictions.