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Discontinued Operations (Tables) | 6 Months Ended
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Jun. 30, 2018
Discontinued Operations and Disposal Groups [Abstract] |
Disposal Groups, Including Discontinued Operations | The following table details selected financial information for the divested business included within discontinued operations:
| For the Three Months Ended |  | For the Six Months Ended
| June 30, 2017 |  | June 30, 2017
Coal Revenue | $ | 303,707 |  |  | $ | 620,155 |
Other Outside Sales | 14,856 |  |  | 27,742 |
Freight-Outside Coal | 17,763 |  |  | 30,045 |
Miscellaneous Other Income | 8,934 |  |  | 26,330 |
Gain on Sale of Assets | 5,581 |  |  | 13,536 |
Total Revenue and Other Income | $ | 350,841 |  |  | $ | 717,808 |
Total Costs | 289,790 |  |  | 605,620 |
Income From Operations Before Income Taxes | $ | 61,051 |  |  | $ | 112,188 |
Income Tax Expense | 9,035 |  |  | 2,668 |
Less: Net Income Attributable to Noncontrolling Interest | 4,313 |  |  | 9,777 |
Income From Discontinued Operations, net | $ | 47,703 |  |  | $ | 99,743 |

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