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REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Disaggregation of revenues |  |
Revenues | $ 651,697 | $ 662,922
Coal sales |  |
Disaggregation of revenues |  |
Revenues | 561,879 | 578,784
Oil & gas royalties |  |
Disaggregation of revenues |  |
Revenues | 37,030 | 34,497
Transportation |  |
Disaggregation of revenues |  |
Revenues | 30,753 | 30,238
Other revenues |  |
Disaggregation of revenues |  |
Revenues | 22,035 | 19,403
Coal Royalties |  |
Disaggregation of revenues |  |
Revenues | 18,708 | 15,513
Operating segments | Illinois Basin Coal |  |
Disaggregation of revenues |  |
Revenues | 397,841 | 360,406
Operating segments | Illinois Basin Coal | Coal sales |  |
Disaggregation of revenues |  |
Revenues | 370,630 | 336,910
Operating segments | Illinois Basin Coal | Transportation |  |
Disaggregation of revenues |  |
Revenues | 24,476 | 21,328
Operating segments | Illinois Basin Coal | Other revenues |  |
Disaggregation of revenues |  |
Revenues | 2,735 | 2,168
Operating segments | Appalachia Coal |  |
Disaggregation of revenues |  |
Revenues | 198,013 | 251,259
Operating segments | Appalachia Coal | Coal sales |  |
Disaggregation of revenues |  |
Revenues | 191,249 | 241,874
Operating segments | Appalachia Coal | Transportation |  |
Disaggregation of revenues |  |
Revenues | 6,277 | 8,910
Operating segments | Appalachia Coal | Other revenues |  |
Disaggregation of revenues |  |
Revenues | 487 | 475
Operating segments | Oil & Gas Royalties |  |
Disaggregation of revenues |  |
Revenues | 37,345 | 35,537
Operating segments | Oil & Gas Royalties | Oil & gas royalties |  |
Disaggregation of revenues |  |
Revenues | 37,030 | 34,497
Operating segments | Oil & Gas Royalties | Other revenues |  |
Disaggregation of revenues |  |
Revenues | 315 | 1,040
Operating segments | Coal Royalties |  |
Disaggregation of revenues |  |
Revenues | 6 |
Operating segments | Coal Royalties | Coal royalties |  |
Disaggregation of revenues |  |
Revenues | 18,702 | 15,513
Operating segments | Coal Royalties | Other revenues |  |
Disaggregation of revenues |  |
Revenues | 6 |
Other, Corporate and Elimination |  |
Disaggregation of revenues |  |
Revenues | (210) | 207
Other, Corporate and Elimination | Coal royalties |  |
Disaggregation of revenues |  |
Revenues | (18,702) | (15,513)
Other, Corporate and Elimination | Other revenues |  |
Disaggregation of revenues |  |
Revenues | 18,492 | 15,720
Elimination |  |
Disaggregation of revenues |  |
Revenues | (18,702) | (15,513)
Elimination | Coal Royalties |  |
Disaggregation of revenues |  |
Revenues | $ 18,702 | $ 15,513

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