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SEGMENT INFORMATION - Segment Results (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Reportable segment results |  |  |
Revenues | $ 350,763 | $ 526,602 |
Segment Adjusted EBITDA Expense | 234,698 | 302,857 |
Segment Adjusted EBITDA | 111,701 | 206,644 |
Total assets | 2,396,421 | 2,485,130 | $ 2,586,694
Capital expenditures | 50,364 | 84,043 |
Illinois Basin |  |  |
Reportable segment results |  |  |
Revenues | 203,872 | 349,396 |
Segment Adjusted EBITDA Expense | 149,987 | 197,422 |
Segment Adjusted EBITDA | 50,029 | 122,737 |
Total assets | 1,189,486 | 1,434,235 |
Capital expenditures | 26,229 | 48,454 |
Appalachia |  |  |
Reportable segment results |  |  |
Revenues | 128,103 | 159,404 |
Segment Adjusted EBITDA Expense | 79,710 | 99,749 |
Segment Adjusted EBITDA | 47,510 | 58,655 |
Total assets | 514,988 | 468,904 |
Capital expenditures | 23,571 | 33,346 |
Minerals |  |  |
Reportable segment results |  |  |
Revenues | 14,263 | 10,728 |
Segment Adjusted EBITDA Expense | 883 | 1,827 |
Segment Adjusted EBITDA | 13,755 | 9,132 |
Total assets | 637,774 | 510,076 |
Other and Corporate |  |  |
Reportable segment results |  |  |
Revenues | 7,384 | 14,162 |
Segment Adjusted EBITDA Expense | 4,642 | 8,706 |
Segment Adjusted EBITDA | 2,742 | 18,361 |
Total assets | 496,743 | 450,547 |
Capital expenditures | 564 | 2,243 |
Operating segments |  |  |
Reportable segment results |  |  |
Revenues | 350,763 | 526,602 |
Operating segments | Illinois Basin |  |  |
Reportable segment results |  |  |
Revenues | 203,872 | 345,399 |
Operating segments | Appalachia |  |  |
Reportable segment results |  |  |
Revenues | 128,103 | 159,404 |
Operating segments | Minerals |  |  |
Reportable segment results |  |  |
Revenues | 14,263 | 10,728 |
Operating segments | Other and Corporate |  |  |
Reportable segment results |  |  |
Revenues | 4,525 | 11,071 |
Elimination |  |  |
Reportable segment results |  |  |
Revenues | (2,859) | (7,088) |
Segment Adjusted EBITDA Expense | (524) | (4,847) |
Segment Adjusted EBITDA | (2,335) | (2,241) |
Total assets | (442,570) | (378,632) |
Elimination | Illinois Basin |  |  |
Reportable segment results |  |  |
Revenues |  | 3,997 |
Elimination | Other and Corporate |  |  |
Reportable segment results |  |  |
Revenues | $ 2,859 | $ 3,091 |

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