Quarterly report pursuant to Section 13 or 15(d)

Income Taxes Income Taxes

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Income Taxes Income Taxes
3 Months Ended
Mar. 31, 2013
Income Tax Disclosure [Abstract]  
Income Tax Disclosure [Text Block]
Note 3. Income Taxes

Our effective tax rate for the first quarter of 2013 was 36.1%, as compared to 39.5% for the first quarter of 2012. On January 2, 2013, Congress enacted the American Taxpayer Relief Act of 2012, which reinstated alternative fuel tax credits that previously expired on December 31, 2011 and extended those credits until December 31, 2013. As a result, our first quarter tax rate included the favorable impact of a discrete tax adjustment of $1.6 million for credits related to our use of alternative fuel in 2012. Our annual effective tax rate in 2013 will also benefit from the credits for our use of alternative fuel in the current year. Our effective tax rate generally exceeds the federal statutory rate of 35% due to the impact of state taxes, and, to a lesser extent, certain other non-deductible items.