Taxes	9 Months Ended
Sep. 30, 2019
Income Tax Disclosure [Abstract]
Taxes	Income Taxes Consistent with authoritative guidance, our estimated annual effective tax rate is used to allocate expected annual income tax expense to interim periods. The rate is the ratio of estimated annual income tax expense to estimated pre-tax ordinary income, and excludes "discrete items," which are significant, unusual or infrequent items reported separately net of their related tax effect. The estimated annual effective tax rate is applied to the current interim period's ordinary income to determine the income tax expense allocated to the interim period. The income tax effects of discrete items are then determined separately and recognized in the interim period in which the income or expense items arise. Our estimated annual effective tax rate for the third quarter of 2019 is approximately 34%, compared with approximately 32% for the comparable interim period in 2018. The annual effective tax rate in 2019 is subject to variation due to several factors, including variability in pre-tax income (or loss), forecasted pre-tax income (or loss), changes in business practices, changes in tax credits and tax law developments. The rate in 2018 reflected the Federal rate reduction enacted by the Tax Cuts and Jobs Act offset by an increase in the rate due to basis differences associated with the goodwill written-off as part of the sale of our Ladysmith facility.

Income Taxes

Consistent with authoritative guidance, our estimated annual effective tax rate is used to allocate expected annual income tax expense to interim periods. The rate is the ratio of estimated annual income tax expense to estimated pre-tax ordinary income, and excludes "discrete items," which are significant, unusual or infrequent items reported separately net of their related tax effect. The estimated annual effective tax rate is applied to the current interim period's ordinary income to determine the income tax expense allocated to the interim period. The income tax effects of discrete items are then determined separately and recognized in the interim period in which the income or expense items arise.

Our estimated annual effective tax rate for the third quarter of 2019 is approximately 34%, compared with approximately 32% for the comparable interim period in 2018. The annual effective tax rate in 2019 is subject to variation due to several factors, including variability in pre-tax income (or loss), forecasted pre-tax income (or loss), changes in business practices, changes in tax credits and tax law developments. The rate in 2018 reflected the Federal rate reduction enacted by the Tax Cuts and Jobs Act offset by an increase in the rate due to basis differences associated with the goodwill written-off as part of the sale of our Ladysmith facility.