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Note 13 - Income Taxes | 3 Months Ended
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Mar. 31, 2019
Notes to Financial Statements |
Income Tax Disclosure [Text Block] | 13 . Income Taxes For the three -months ended March 31, 2019 and 2018, our income tax expense and effective income tax rates were as follows (dollars in millions):
|  | Three Months Ended March 31, |
|  | 2019 |  |  | 2018 |
Income tax expense |  | $ | 3 |  |  | $ | 6 |
Effective income tax rate |  |  | (20 | %) |  |  | 23 | %
We estimate our differences between taxable income or loss and recorded income or loss on an annual basis. Our tax provision for each quarter is based upon these full year projections, which are revised each reporting period. These projections incorporate estimates of permanent differences between U.S. GAAP income or loss and taxable income or loss, state income taxes and adjustments to our liability for unrecognized tax benefits to adjust our statutory Federal income tax rate of 21.0% to our effective income tax rate. For the three -months ended March 31, 2019, these estimates increased or decreased our statutory Federal income tax rate to our effective income tax rate of ( 20% ) as follows: state income taxes added 6%, permanent differences between our U.S. GAAP income and taxable income related to 1 ) restricted stock vesting that resulted in an increase of 6%, and 2 ) the divestiture of component 2 goodwill that resulted in a decrease of 53%. For the three -months ended March 31, 2018, these estimates increased or decreased our statutory Federal income tax rate to our effective income tax rate of 23% as follows: state income taxes added 5% and discrete adjustments resulted in a reduction of 3%.

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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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