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v3.22.2.2

Business Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 61,793 | $ 51,742 | $ 178,185 | $ 142,743
Operating profit (loss) | 9,818 | 27,592 | 54,445 | 44,592
Expenditures for property, plant and equipment and acquisition of mineral interests | 17,086 | 19,407 | 42,004 | 35,534
Depreciation, depletion and amortization | 6,569 | 5,796 | 19,184 | 16,998
Operating segments | Coal Mining |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 22,599 | 20,946 | 70,163 | 63,577
Operating profit (loss) | 6,089 | 21,985 | 34,616 | 37,769
Expenditures for property, plant and equipment and acquisition of mineral interests | 3,141 | 5,646 | 11,141 | 10,378
Depreciation, depletion and amortization | 4,257 | 4,306 | 12,683 | 12,534
Operating segments | NAMining |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 22,962 | 20,429 | 67,180 | 58,228
Operating profit (loss) | (210) | 1,448 | 2,318 | 3,803
Expenditures for property, plant and equipment and acquisition of mineral interests | 604 | 13,309 | 8,985 | 19,127
Depreciation, depletion and amortization | 1,585 | 1,031 | 4,545 | 2,966
Operating segments | Minerals Management |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 16,172 | 10,607 | 40,888 | 21,715
Operating profit (loss) | 10,616 | 9,454 | 35,317 | 17,862
Expenditures for property, plant and equipment and acquisition of mineral interests | 11,397 | 450 | 12,346 | 5,948
Depreciation, depletion and amortization | 660 | 423 | 1,781 | 1,392
Unallocated Items |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 1,092 | 1,594 | 1,901 | 2,647
Operating profit (loss) | (6,780) | (5,170) | (18,171) | (14,738)
Expenditures for property, plant and equipment and acquisition of mineral interests | 1,944 | 2 | 9,532 | 81
Depreciation, depletion and amortization | 67 | 36 | 175 | 106
Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | (1,032) | (1,834) | (1,947) | (3,424)
Operating profit (loss) | $ 103 | $ (125) | $ 365 | $ (104)

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