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SEGMENT INFORMATION - Segment Results (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Reportable segment results |  |  |  |  |
Revenues | $ 593,350 | $ 641,836 | $ 1,245,047 | $ 1,304,758 |
Segment Adjusted EBITDA Expense | 363,171 | 338,434 | 721,498 | 677,730 |
Segment Adjusted EBITDA | 202,004 | 269,366 | 462,558 | 561,313 |
Total assets | 3,052,946 | 2,787,943 | 3,052,946 | 2,787,943 | $ 2,788,426
Capital expenditures | 101,442 | 89,543 | 225,288 | 185,017 |
Other revenues |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 17,561 | 17,891 | 39,596 | 37,294 |
Coal Royalties |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 16,588 | 16,567 | 35,296 | 32,080 |
Coal Royalties | Other revenues |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 4 |  |  |  |
Operating segments | Illinois Basin Coal |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 354,761 | 355,392 | 752,602 | 715,798 |
Segment Adjusted EBITDA Expense | 216,168 | 214,666 | 449,255 | 421,735 |
Segment Adjusted EBITDA | 118,023 | 119,551 | 258,301 | 251,559 |
Total assets | 1,011,972 | 830,821 | 1,011,972 | 830,821 |
Capital expenditures | 65,973 | 57,469 | 162,106 | 119,451 |
Operating segments | Illinois Basin Coal | Other revenues |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 2,218 | 2,401 | 4,953 | 4,569 |
Operating segments | Appalachia Coal |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 188,213 | 238,242 | 386,226 | 489,501 |
Segment Adjusted EBITDA Expense | 136,762 | 119,319 | 254,264 | 245,118 |
Segment Adjusted EBITDA | 45,319 | 109,573 | 119,554 | 226,123 |
Total assets | 552,796 | 470,929 | 552,796 | 470,929 |
Capital expenditures | 32,793 | 31,309 | 59,244 | 63,814 |
Operating segments | Appalachia Coal | Other revenues |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 1,396 | 375 | 1,883 | 850 |
Operating segments | Oil & Gas Royalties |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 36,437 | 33,412 | 73,782 | 68,949 |
Segment Adjusted EBITDA Expense | 4,635 | 3,562 | 9,575 | 7,986 |
Segment Adjusted EBITDA | 31,258 | 29,050 | 62,660 | 59,095 |
Total assets | 793,416 | 758,816 | 793,416 | 758,816 |
Capital expenditures |  | 40 |  | 42 |
Operating segments | Oil & Gas Royalties | Other revenues |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 8 | 325 | 323 | 1,365 |
Operating segments | Coal Royalties |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 4 |  | 10 |  |
Segment Adjusted EBITDA Expense | 6,632 | 5,597 | 12,896 | 10,985 |
Segment Adjusted EBITDA | 9,955 | 10,970 | 22,399 | 21,095 |
Total assets | 316,505 | 322,926 | 316,505 | 322,926 |
Capital expenditures |  |  |  | 400 |
Operating segments | Coal Royalties | Other revenues |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues |  |  | 10 |  |
Other, Corporate and Elimination |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | (2,649) | (1,777) | (2,859) | (1,570) |
Segment Adjusted EBITDA Expense | (1,026) | (4,710) | (4,492) | (8,094) |
Segment Adjusted EBITDA | (2,551) | 222 | (356) | 3,441 |
Total assets | 378,257 | 404,451 | 378,257 | 404,451 |
Capital expenditures | 2,676 | 725 | 3,938 | 1,310 |
Other, Corporate and Elimination | Other revenues |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | 13,935 | 14,790 | 32,427 | 30,510 |
Elimination |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | (16,584) | (16,567) | (35,286) | (32,080) |
Elimination | Coal Royalties |  |  |  |  |
Reportable segment results |  |  |  |  |
Revenues | $ 16,584 | $ 16,567 | $ 35,286 | $ 32,080 |

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