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REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Disaggregation of revenues |  |  |  |
Revenues | $ 593,350 | $ 641,836 | $ 1,245,047 | $ 1,304,758
Coal sales |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 512,659 | 560,331 | 1,074,538 | 1,139,115
Oil & gas royalties |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 36,429 | 33,087 | 73,459 | 67,584
Transportation |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 26,701 | 30,527 | 57,454 | 60,765
Other revenues |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 17,561 | 17,891 | 39,596 | 37,294
Coal Royalties |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 16,588 | 16,567 | 35,296 | 32,080
Coal Royalties | Coal royalties |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 16,584 |  |  |
Coal Royalties | Other revenues |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 4 |  |  |
Operating segments | Illinois Basin Coal |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 354,761 | 355,392 | 752,602 | 715,798
Operating segments | Illinois Basin Coal | Coal sales |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 331,973 | 331,813 | 702,603 | 668,723
Operating segments | Illinois Basin Coal | Transportation |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 20,570 | 21,178 | 45,046 | 42,506
Operating segments | Illinois Basin Coal | Other revenues |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 2,218 | 2,401 | 4,953 | 4,569
Operating segments | Appalachia Coal |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 188,213 | 238,242 | 386,226 | 489,501
Operating segments | Appalachia Coal | Coal sales |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 180,686 | 228,518 | 371,935 | 470,392
Operating segments | Appalachia Coal | Transportation |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 6,131 | 9,349 | 12,408 | 18,259
Operating segments | Appalachia Coal | Other revenues |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 1,396 | 375 | 1,883 | 850
Operating segments | Oil & Gas Royalties |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 36,437 | 33,412 | 73,782 | 68,949
Operating segments | Oil & Gas Royalties | Oil & gas royalties |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 36,429 | 33,087 | 73,459 | 67,584
Operating segments | Oil & Gas Royalties | Other revenues |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 8 | 325 | 323 | 1,365
Operating segments | Coal Royalties |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 4 |  | 10 |
Operating segments | Coal Royalties | Coal royalties |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues |  | 16,567 | 35,286 | 32,080
Operating segments | Coal Royalties | Other revenues |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues |  |  | 10 |
Other, Corporate and Elimination |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | (2,649) | (1,777) | (2,859) | (1,570)
Other, Corporate and Elimination | Coal royalties |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | (16,584) | (16,567) | (35,286) | (32,080)
Other, Corporate and Elimination | Other revenues |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | 13,935 | 14,790 | 32,427 | 30,510
Elimination |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | (16,584) | (16,567) | (35,286) | (32,080)
Elimination | Coal Royalties |  |  |  |
Disaggregation of revenues |  |  |  |
Revenues | $ 16,584 | $ 16,567 | $ 35,286 | $ 32,080

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