Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For interim financial reporting, we estimate the annual tax rate based on projected pre-tax income (loss) for the full year and record a quarterly income tax provision (benefit) in accordance with accounting guidance for income taxes. As the year progresses, we refine the estimate of the year’s pre-tax income (loss) as new information becomes available. The continual estimation process often results in a change to the expected effective tax rate for the year. When this occurs, we adjust the income tax provision (benefit) during the quarter in which the change in estimate occurs so that the year-to-date provision reflects the most current expected annual tax rate. Our effective tax rate was (35.6)% and (27.8)% for the three months ended June 30, 2020 and 2019, respectively, and 5.2% and (43.0)% for the six months ended June 30, 2020 and 2019, respectively. The quarterly variance in effective tax rates is primarily due to a change in the geographical mix of income. The variance in effective tax rates compared to the same six month period last year is due to the beneficial impact in the current period of a provision in the recently-enacted Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”), which allows corporations with net operating losses (“NOLs”) incurred in 2018, 2019 and 2020 to carry back such NOLs to each of the five years preceding the year of the NOL, beginning with the earliest year in which there is taxable income, and claim an income tax refund in the applicable carryback year. As a result of the NOL carryback provision in the CARES Act, we were able to recognize an income tax refund receivable as of June 30, 2020 of $17.5 million. We are subject to tax in many U.S. and foreign jurisdictions. In many foreign jurisdictions we are taxed on bases such as deemed profits or withholding taxes based on revenue. Consequently, the relationship between our pre-tax income and our income tax provision varies from period to period. We are under audit by certain foreign jurisdictions for the years 2008 - 2019. We do not expect the results of these audits to have any material effect on our financial statements. As of June 30, 2020, there were no significant changes to our uncertain tax positions as reported in our audited financial statements for the year ended December 31, 2019.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.