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SEGMENT INFORMATION - Segment Results (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reportable segment results |  |  |
Revenues | $ 2,406,511 | $ 1,569,976 | $ 1,328,129
Segment Adjusted EBITDA Expense | 1,282,433 | 952,649 | 861,249
Segment Adjusted EBITDA | 1,020,558 | 549,252 | 446,489
Total assets | 2,661,473 | 2,159,406 | 2,166,016
Capital expenditures | 286,394 | 122,984 | 121,101
Illinois Basin |  |  |
Reportable segment results |  |  |
Revenues | 1,296,305 | 919,597 | 769,957
Segment Adjusted EBITDA Expense | 806,080 | 613,303 | 543,264
Segment Adjusted EBITDA | 420,684 | 265,292 | 213,876
Total assets | 779,018 | 676,091 | 738,315
Capital expenditures | 158,624 | 60,166 | 48,636
Appalachia |  |  |
Reportable segment results |  |  |
Revenues | 928,087 | 545,539 | 500,330
Segment Adjusted EBITDA Expense | 464,029 | 344,332 | 320,656
Segment Adjusted EBITDA | 426,402 | 172,601 | 171,362
Total assets | 431,913 | 420,144 | 440,815
Capital expenditures | 76,603 | 47,577 | 70,960
Oil & Gas Royalties |  |  |
Reportable segment results |  |  |
Revenues | 141,441 | 77,185 | 43,141
Segment Adjusted EBITDA Expense | 13,950 | 9,943 | 4,106
Segment Adjusted EBITDA | 131,168 | 68,774 | 39,773
Total assets | 711,917 | 630,627 | 613,916
Coal Royalties |  |  |
Reportable segment results |  |  |
Revenues | 60,680 | 51,471 | 42,217
Segment Adjusted EBITDA Expense | 21,871 | 18,269 | 18,249
Segment Adjusted EBITDA | 38,809 | 33,202 | 23,968
Total assets | 321,587 | 285,943 | 288,525
Capital expenditures | 38,276 | 45 | 12
Other, Corporate and Elimination |  |  |
Reportable segment results |  |  |
Revenues | (20,002) | (23,816) | (27,516)
Segment Adjusted EBITDA Expense | (23,497) | (33,198) | (25,026)
Segment Adjusted EBITDA | 3,495 | 9,383 | (2,490)
Total assets | 417,038 | 146,601 | 84,445
Capital expenditures | 12,891 | 15,196 | 1,493
Operating segments |  |  |
Reportable segment results |  |  |
Revenues | 2,406,511 | 1,569,976 | 1,328,129
Operating segments | Illinois Basin |  |  |
Reportable segment results |  |  |
Revenues | 1,296,305 | 919,597 | 769,957
Operating segments | Appalachia |  |  |
Reportable segment results |  |  |
Revenues | 928,087 | 545,539 | 500,330
Operating segments | Oil & Gas Royalties |  |  |
Reportable segment results |  |  |
Revenues | 141,441 | 77,185 | 43,141
Operating segments | Coal Royalties |  |  |
Reportable segment results |  |  |
Revenues | 56 | 69 | 105
Operating segments | Other, Corporate and Elimination |  |  |
Reportable segment results |  |  |
Revenues | 40,622 | 27,586 | 14,596
Elimination | Coal Royalties |  |  |
Reportable segment results |  |  |
Revenues | 60,624 | 51,402 | 42,112
Elimination | Other, Corporate and Elimination |  |  |
Reportable segment results |  |  |
Revenues | $ (60,624) | $ (51,402) | $ (42,112)

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. 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