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Income Taxes
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3 Months Ended |
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Mar. 31, 2015
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| Income Tax Disclosure [Abstract] | |
| Income Taxes | Income Taxes Income taxes for the interim periods presented have been included in the accompanying condensed consolidated financial statements on the basis of an estimated annual effective tax rate. Based on an estimated annual effective tax rate and discrete items, the estimated tax benefit from operations for the three-month periods ended March 31, 2015 and 2014 was $6,026 and $2,948, respectively. The determination of the interim period income tax provision utilizes the effective tax rate method, which requires us to estimate certain annualized components of the calculation of the income tax provision, including the annual effective tax rate by entity and jurisdiction. |