Income Taxes	6 Months Ended
Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes as a percentage of earnings before income taxes for the second quarter of 2016 was 36.0% compared to 33.4% in the second quarter of 2015. The provision for income taxes as a percentage of earnings before income taxes for the first half of 2016 was 36.1% compared to 34.8% in the first half of 2015. Interim provisions are tied to an estimate of the overall annual rate which can vary due to state taxes, the relationship of foreign and domestic earnings, and production credits available. These items cause variations between periods.

Income Taxes

6 Months Ended

Jun. 30, 2016

The provision for income taxes as a percentage of earnings before income taxes for the second quarter of 2016 was 36.0% compared to 33.4% in the second quarter of 2015. The provision for income taxes as a percentage of earnings before income taxes for the first half of 2016 was 36.1% compared to 34.8% in the first half of 2015. Interim provisions are tied to an estimate of the overall annual rate which can vary due to state taxes, the relationship of foreign and domestic earnings, and production credits available. These items cause variations between periods.