Taxes	6 Months Ended
Jun. 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 applied to the second quarter of 2019 is approximately 59%, compared with approximately 26% for the comparable interim period in 2018. The annual effective tax rate 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. Tax effected items in the second quarter of 2019 have a greater impact on a percentage basis of our $2.9 million of earnings before taxes compared to $9.5 million in pre-tax earnings in the second quarter of 2018.

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 applied to the second quarter of 2019 is approximately 59%, compared with approximately 26% for the comparable interim period in 2018. The annual effective tax rate 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. Tax effected items in the second quarter of 2019 have a greater impact on a percentage basis of our $2.9 million of earnings before taxes compared to $9.5 million in pre-tax earnings in the second quarter of 2018.