Income Taxes	6 Months Ended
Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	15. Income Taxes CARES Act On March 27, 2020, President Trump signed into law the CARES Act, which includes, among other things, refundable payroll tax credits, deferment of employer side social security payments, NOL carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property. The CARES Act provisions did not have a material impact on our condensed consolidated financial statements. Future regulatory guidance under the CARES Act or additional legislation enacted by Congress in connection with the COVID-19 pandemic could impact our tax provision in future periods. Valuation Allowance The amount of our deferred tax assets considered realizable could be adjusted if projections of future taxable income are reduced or objective negative evidence in the form of a three-year cumulative loss is present or both. Should we no longer have a level of sustained profitability, excluding nonrecurring charges, we will have to rely more on our future projections of taxable income to determine if we have an adequate source of taxable income for the realization of our deferred tax assets, namely NOL carryforwards and tax credit carryforwards. This may result in the need to record a valuation allowance against all or a portion of our deferred tax assets. Effective Tax Rate We have historically calculated the provision for (benefit from) income taxes during interim reporting periods by applying a full year estimated AETR to income (loss) before income taxes, excluding infrequent or unusual discrete items, for the reporting period. For the six months ended June 30, 2020, we determined that using an AETR would not provide a reliable estimate of income taxes due to small changes in our projected income (loss) before income taxes resulting in significant changes in the estimated AETR. Thus, we concluded to use a discrete effective tax rate, which treats the year-to-date period as an annual period, to calculate income taxes for the six months ended June 30, 2020. The resulting year-to date effective tax rate for the six months ended June 30, 2020 did not significantly differ from our statutory rate. We will continue to evaluate interim income tax estimates using an estimated AETR in subsequent quarters and will only use a discrete effective tax rate if warranted. Unrecognized Tax Benefits As of June 30, 2020, we believe it is reasonably possible that $2.7 million of our unrecognized tax benefits, including penalties, interest and discontinued operations, will be reduced prior to June 30, 2021 due to the settlement of audits or the expiration of statutes of limitations or both. However, due to the uncertain and complex application of the tax regulations, it is possible that the ultimate resolution of these matters may result in liabilities that could materially differ from this estimate.

Income Taxes

6 Months Ended

Jun. 30, 2020

15. Income Taxes

CARES Act

On March 27, 2020, President Trump signed into law the CARES Act, which includes, among other things, refundable payroll tax credits, deferment of employer side social security payments, NOL carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property. The CARES Act provisions did not have a material impact on our condensed consolidated financial statements. Future regulatory guidance under the CARES Act or additional legislation enacted by Congress in connection with the COVID-19 pandemic could impact our tax provision in future periods.

Valuation Allowance

The amount of our deferred tax assets considered realizable could be adjusted if projections of future taxable income are reduced or objective negative evidence in the form of a three-year cumulative loss is present or both. Should we no longer have a level of sustained profitability, excluding nonrecurring charges, we will have to rely more on our future projections of taxable income to determine if we have an adequate source of taxable income for the realization of our deferred tax assets, namely NOL carryforwards and tax credit carryforwards. This may result in the need to record a valuation allowance against all or a portion of our deferred tax assets.

Effective Tax Rate

We have historically calculated the provision for (benefit from) income taxes during interim reporting periods by applying a full year estimated AETR to income (loss) before income taxes, excluding infrequent or unusual discrete items, for the reporting period. For the six months ended June 30, 2020, we determined that using an AETR would not provide a reliable estimate of income taxes due to small changes in our projected income (loss) before income taxes resulting in significant changes in the estimated AETR. Thus, we concluded to use a discrete effective tax rate, which treats the year-to-date period as an annual period, to calculate income taxes for the six months ended June 30, 2020. The resulting year-to date effective tax rate for the six months ended June 30, 2020 did not significantly differ from our statutory rate. We will continue to evaluate interim income tax estimates using an estimated AETR in subsequent quarters and will only use a discrete effective tax rate if warranted.

Unrecognized Tax Benefits

As of June 30, 2020, we believe it is reasonably possible that $2.7 million of our unrecognized tax benefits, including penalties, interest and discontinued operations, will be reduced prior to June 30, 2021 due to the settlement of audits or the expiration of statutes of limitations or both. However, due to the uncertain and complex application of the tax regulations, it is possible that the ultimate resolution of these matters may result in liabilities that could materially differ from this estimate.

- Definition

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.

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