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SEGMENT INFORMATION - Segment Results (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Reportable segment results |  |  |
Revenues | $ 1,569,976 | $ 1,328,129 | $ 1,961,720
Segment Adjusted EBITDA Expense | 952,649 | 861,249 | 1,204,896
Segment Adjusted EBITDA | 549,252 | 446,489 | 672,001
Total assets | 2,159,406 | 2,166,016 | 2,586,694
Capital expenditures | 122,984 | 121,101 | 305,858
Illinois Basin |  |  |
Reportable segment results |  |  |
Revenues | 919,597 | 769,957 | 1,236,291
Segment Adjusted EBITDA Expense | 613,303 | 543,264 | 791,795
Segment Adjusted EBITDA | 265,292 | 213,876 | 349,810
Total assets | 676,091 | 738,315 | 1,092,188
Capital expenditures | 60,166 | 48,636 | 188,928
Appalachia |  |  |
Reportable segment results |  |  |
Revenues | 545,539 | 500,330 | 644,389
Segment Adjusted EBITDA Expense | 344,332 | 320,656 | 424,387
Segment Adjusted EBITDA | 172,601 | 171,362 | 215,187
Total assets | 420,144 | 440,815 | 489,378
Capital expenditures | 47,577 | 70,960 | 111,729
Oil & Gas Royalties |  |  |
Reportable segment results |  |  |
Revenues | 77,185 | 43,141 | 53,036
Segment Adjusted EBITDA Expense | 9,943 | 4,106 | 7,811
Segment Adjusted EBITDA | 68,774 | 39,773 | 46,997
Total assets | 630,627 | 613,916 | 643,213
Coal Royalties |  |  |
Reportable segment results |  |  |
Revenues | 51,471 | 42,217 | 57,760
Segment Adjusted EBITDA Expense | 18,269 | 18,249 | 21,445
Segment Adjusted EBITDA | 33,202 | 23,968 | 36,315
Total assets | 285,943 | 288,525 | 292,436
Capital expenditures | 45 | 12 | 352
Other, Corporate and Elimination |  |  |
Reportable segment results |  |  |
Revenues | (23,816) | (27,516) | (29,756)
Segment Adjusted EBITDA Expense | (33,198) | (25,026) | (40,542)
Segment Adjusted EBITDA | 9,383 | (2,490) | 23,692
Total assets | 146,601 | 84,445 | 69,479
Capital expenditures | 15,196 | 1,493 | 4,849
Operating segments |  |  |
Reportable segment results |  |  |
Revenues | 1,569,976 | 1,328,129 | 1,961,720
Operating segments | Illinois Basin |  |  |
Reportable segment results |  |  |
Revenues | 919,597 | 769,957 | 1,219,601
Operating segments | Appalachia |  |  |
Reportable segment results |  |  |
Revenues | 545,539 | 500,330 | 644,389
Operating segments | Oil & Gas Royalties |  |  |
Reportable segment results |  |  |
Revenues | 77,185 | 43,141 | 53,036
Operating segments | Coal Royalties |  |  |
Reportable segment results |  |  |
Revenues | 69 | 105 | 23
Operating segments | Other, Corporate and Elimination |  |  |
Reportable segment results |  |  |
Revenues | 27,586 | 14,596 | 44,671
Elimination | Illinois Basin |  |  |
Reportable segment results |  |  |
Revenues |  |  | 16,690
Elimination | Coal Royalties |  |  |
Reportable segment results |  |  |
Revenues | 51,402 | 42,112 | 57,737
Elimination | Other, Corporate and Elimination |  |  |
Reportable segment results |  |  |
Revenues | $ (51,402) | $ (42,112) | $ (74,427)

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