Income Taxes	3 Months Ended
Mar. 31, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our income tax expense of $4.0 million for the three months ended March 31, 2013, primarily reflects income taxes at certain of our foreign operations and foreign withholding taxes. Our income tax expense also reflects income taxed in foreign jurisdictions where we benefit from tax holidays. At March 31, 2013, we had U.S. net operating loss carryforwards totaling $367.6 million, which expire at various times through 2031. Additionally, at March 31, 2013, we had $83.5 million of non-U.S. net operating loss carryforwards, which expire at various times through 2023. We maintain a valuation allowance on all of our U.S. net deferred tax assets, including our net operating loss carryforwards. We also have valuation allowances on deferred tax assets in certain foreign jurisdictions. Such valuation allowances are released as the related tax benefits are realized or when sufficient net positive evidence exists to conclude it is more likely than not that the deferred tax assets will be realized. Our gross unrecognized tax benefits increased from $8.2 million at December 31, 2012, to $8.7 million as of March 31, 2013, primarily because of a $0.5 million addition related to the application of a law change in a foreign jurisdiction. At March 31, 2013, $6.5 million of our unrecognized tax benefits would reduce our effective tax rate, if recognized. Our unrecognized tax benefits are subject to change as examinations of tax years are completed. Tax return examinations involve uncertainties, and there can be no assurances that the outcome of examinations will be favorable.

Income Taxes

3 Months Ended

Mar. 31, 2013

Our income tax expense of $4.0 million for the three months ended March 31, 2013, primarily reflects income taxes at certain of our foreign operations and foreign withholding taxes. Our income tax expense also reflects income taxed in foreign jurisdictions where we benefit from tax holidays. At March 31, 2013, we had U.S. net operating loss carryforwards totaling $367.6 million, which expire at various times through 2031. Additionally, at March 31, 2013, we had $83.5 million of non-U.S. net operating loss carryforwards, which expire at various times through 2023.

We maintain a valuation allowance on all of our U.S. net deferred tax assets, including our net operating loss carryforwards. We also have valuation allowances on deferred tax assets in certain foreign jurisdictions. Such valuation allowances are released as the related tax benefits are realized or when sufficient net positive evidence exists to conclude it is more likely than not that the deferred tax assets will be realized.

Our gross unrecognized tax benefits increased from $8.2 million at December 31, 2012, to $8.7 million as of March 31, 2013, primarily because of a $0.5 million addition related to the application of a law change in a foreign jurisdiction. At March 31, 2013, $6.5 million of our unrecognized tax benefits would reduce our effective tax rate, if recognized. Our unrecognized tax benefits are subject to change as examinations of tax years are completed. Tax return examinations involve uncertainties, and there can be no assurances that the outcome of examinations will be favorable.