Income Taxes	9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective income tax rates were 28.4% and 30.0% for the nine and three months ended September 30, 2017 and 5.8% and (3.4)% for the same periods in the prior year. The effective tax rate of 30.0% for the third quarter of 2017 is higher than the nine-month rate primarily due to lower discrete tax benefits in the third quarter compared with the first and second quarters of 2017. The 2017 effective tax rates are higher than the prior year primarily due to discrete tax benefits recorded in the third quarter of 2016 related to tax basis adjustments of $440 and the settlement of the 2011-2012 federal tax audit of $177. Additionally, 2017 year-to-date and projected pre-tax earnings are higher compared to prior year. Furthermore, higher share-based compensation tax benefits were recognized for the nine and three month periods of 2017 compared with the prior year. Federal income tax audits have been settled for all years prior to 2013. The Internal Revenue Service (IRS) is currently examining the 2013-2014 tax years. We are also subject to examination in major state and international jurisdictions for the 2001-2016 tax years. We believe appropriate provisions for all outstanding tax issues have been made for all jurisdictions and all open years.

Income Taxes

Our effective income tax rates were 28.4% and 30.0% for the nine and three months ended September 30, 2017 and 5.8% and (3.4)% for the same periods in the prior year. The effective tax rate of 30.0% for the third quarter of 2017 is higher than the nine-month rate primarily due to lower discrete tax benefits in the third quarter compared with the first and second quarters of 2017. The 2017 effective tax rates are higher than the prior year primarily due to discrete tax benefits recorded in the third quarter of 2016 related to tax basis adjustments of $440 and the settlement of the 2011-2012 federal tax audit of $177. Additionally, 2017 year-to-date and projected pre-tax earnings are higher compared to prior year. Furthermore, higher share-based compensation tax benefits were recognized for the nine and three month periods of 2017 compared with the prior year.

Federal income tax audits have been settled for all years prior to 2013. The Internal Revenue Service (IRS) is currently examining the 2013-2014 tax years. We are also subject to examination in major state and international jurisdictions for the 2001-2016 tax years. We believe appropriate provisions for all outstanding tax issues have been made for all jurisdictions and all open years.