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Income Taxes | 3 Months Ended
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Mar. 31, 2020
Income Tax Disclosure [Abstract] |
Income Taxes | 16. 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 The year-to-date effective tax rate for the three months ended March 31, 2020 differed from our statutory rate primarily due to an increase in unrecognized tax benefits. Our quarterly income tax provision is determined based on our estimated full year effective tax rate, adjusted for tax attributable to infrequent or unusual items, which are recognized on a discrete period basis in the income tax provision in the period in which they occur. Our year-to-date income tax provision included a $22.7 million tax benefit recorded discretely on the nonrecurring goodwill impairment loss of $99.8 million. See Note 8 (“Goodwill”) for further details on the goodwill impairment. ​ Unrecognized Tax Benefits As of March 31, 2020, we believe it is reasonably possible that $2.6 million of our unrecognized tax benefits, including penalties, interest and discontinued operations, will be reduced prior to March 31, 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.

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- 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 + Details
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