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v3.25.2

Revenue from Contracts with Customers - Disaggregation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | $ 547,463 | $ 593,350 | $ 1,087,931 | $ 1,245,047 |  |  |  |
Trade receivables | 177,659 | 226,436 | 177,659 | 226,436 | $ 177,467 | $ 166,829 | $ 272,191 | $ 282,622
Coal sales |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 485,469 | 512,659 | 953,980 | 1,074,538 |  |  |  |
Oil & gas royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 35,473 | 36,429 | 71,557 | 73,459 |  |  |  |
Coal royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Transportation |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 8,558 | 26,701 | 18,758 | 57,454 |  |  |  |
Other revenues |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 17,963 | 17,561 | 43,636 | 39,596 |  |  |  |
Operating Segments |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 549,343 | 595,997 | 1,084,542 | 1,247,905 |  |  |  |
Operating Segments | Illinois Basin Coal |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 350,247 | 354,761 | 693,242 | 752,602 |  |  |  |
Operating Segments | Illinois Basin Coal | Coal sales |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 343,841 | 331,973 | 677,075 | 702,603 |  |  |  |
Operating Segments | Illinois Basin Coal | Oil & gas royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Illinois Basin Coal | Coal royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Illinois Basin Coal | Transportation |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 4,829 | 20,570 | 11,692 | 45,046 |  |  |  |
Operating Segments | Illinois Basin Coal | Other revenues |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 1,577 | 2,218 | 4,475 | 4,953 |  |  |  |
Operating Segments | Appalachia Coal |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 145,983 | 188,212 | 285,479 | 386,226 |  |  |  |
Operating Segments | Appalachia Coal | Coal sales |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 141,628 | 180,686 | 276,905 | 371,935 |  |  |  |
Operating Segments | Appalachia Coal | Oil & gas royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Appalachia Coal | Coal royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Appalachia Coal | Transportation |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 3,729 | 6,131 | 7,066 | 12,408 |  |  |  |
Operating Segments | Appalachia Coal | Other revenues |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 626 | 1,395 | 1,508 | 1,883 |  |  |  |
Operating Segments | Oil & Gas Royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 35,501 | 36,437 | 72,414 | 73,782 |  |  |  |
Operating Segments | Oil & Gas Royalties | Coal sales |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Oil & Gas Royalties | Oil & gas royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 35,473 | 36,429 | 71,557 | 73,459 |  |  |  |
Operating Segments | Oil & Gas Royalties | Coal royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Oil & Gas Royalties | Transportation |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Oil & Gas Royalties | Other revenues |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 28 | 8 | 857 | 323 |  |  |  |
Operating Segments | Coal Royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 17,612 | 16,587 | 33,407 | 35,295 |  |  |  |
Operating Segments | Coal Royalties | Coal sales |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Coal Royalties | Oil & gas royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Coal Royalties | Coal royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 17,612 | 16,584 | 33,407 | 35,286 |  |  |  |
Operating Segments | Coal Royalties | Transportation |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Operating Segments | Coal Royalties | Other revenues |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 3 | 0 | 9 |  |  |  |
Other, Corporate and Elimination |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | (17,612) | (16,584) | (33,407) | (35,286) |  |  |  |
Other, Corporate and Elimination | Other revenues |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 15,732 | 13,937 | 36,796 | 32,428 |  |  |  |
Corporate Reconciling Items and Eliminations [Member] |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | (1,880) | (2,647) | 3,389 | (2,858) |  |  |  |
Corporate Reconciling Items and Eliminations [Member] | Coal sales |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Corporate Reconciling Items and Eliminations [Member] | Oil & gas royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Corporate Reconciling Items and Eliminations [Member] | Coal royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | (17,612) | (16,584) | (33,407) | (35,286) |  |  |  |
Corporate Reconciling Items and Eliminations [Member] | Transportation |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |  |  |  |
Corporate Reconciling Items and Eliminations [Member] | Other revenues |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 15,732 | 13,937 | 36,796 | 32,428 |  |  |  |
Elimination |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | 17,612 | 16,584 | 33,407 | 35,286 |  |  |  |
Elimination | Coal Royalties |  |  |  |  |  |  |  |
Disaggregation of revenues |  |  |  |  |  |  |  |
Revenues | $ 17,612 | $ 16,584 | $ 33,407 | $ 35,286 |  |  |  |

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