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WORKERS' COMPENSATION AND PNEUMOCONIOSIS - Liability (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Reconciliation of changes in the workers' compensation liability |  |  |  |  |  |
Beginning balance | $ 47,221 | $ 52,059 | $ 53,448 | $ 54,739 | $ 54,739 |
Accruals increase | 2,918 | 1,674 | 7,464 | 4,911 |  |
Payments | (2,856) | (2,939) | (8,938) | (7,914) |  |
Interest accretion | 287 | 232 | 861 | 695 |  |
Valuation gain |  |  | (5,265) | (1,405) |  |
Ending balance | 47,570 | $ 51,026 | $ 47,570 | $ 51,026 | $ 53,448 | $ 54,739
Estimated present value of future obligations and other information |  |  |  |  |  |
Workers' compensation discount rate |  |  | 4.22% | 2.34% | 2.41% | 1.95%
Other long-term assets |  |  |  |  |  |
Estimated present value of future obligations and other information |  |  |  |  |  |
Receivables for traumatic injury claims | $ 5,700 |  | $ 5,700 |  |  |

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