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Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective federal and state income tax rate for the nine months ended September 30, 2014 of 36.2% differed from the statutory federal rate of 35% due primarily to increases related to the effects of the Texas Margin Tax and certain non-deductible expenses, offset in part by tax benefits derived from excess statutory depletion deductions. We file federal income tax returns with the United States Internal Revenue Service and state income tax returns in various state tax jurisdictions. Our tax returns for fiscal years after 2010 currently remain subject to examination by appropriate taxing authorities. None of our income tax returns are under examination at this time.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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