Income Taxes	6 Months Ended
Jun. 30, 2011
Income Taxes [Abstract]
Income Taxes	Note 14 — Income Taxes Our effective tax rate was a 40 percent benefit in second quarter 2011 and a 37 percent benefit in first six months 2011, which includes a 2 percent non-cash charge for share-based compensation. Our effective tax rate was 6 percent in second quarter 2010 and an 18 percent benefit in first six months 2010, which included a 23 percent benefit attributable to noncontrolling interests. In addition, 2011 and 2010 effective tax rates include the effect of state income taxes, nondeductible items, noncontrolling interests and benefits of percentage depletion. We have not provided a valuation allowance for our deferred tax asset because we believe it is likely it will be recoverable in future periods. At second quarter-end 2011, our unrecognized tax benefits totaled $7,718,000, of which $6,343,000 would affect our effective tax rate if recognized.

Income Taxes

6 Months Ended

Jun. 30, 2011

Note 14 — Income Taxes

Our effective tax rate was a 40 percent benefit in second quarter 2011 and a 37 percent benefit in first six months 2011, which includes a 2 percent non-cash charge for share-based compensation. Our effective tax rate was 6 percent in second quarter 2010 and an 18 percent benefit in first six months 2010, which included a 23 percent benefit attributable to noncontrolling interests. In addition, 2011 and 2010 effective tax rates include the effect of state income taxes, nondeductible items, noncontrolling interests and benefits of percentage depletion.

We have not provided a valuation allowance for our deferred tax asset because we believe it is likely it will be recoverable in future periods.

At second quarter-end 2011, our unrecognized tax benefits totaled $7,718,000, of which $6,343,000 would affect our effective tax rate if recognized.