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WORKERS' COMPENSATION AND PNEUMOCONIOSIS - Liability (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Reconciliation of changes in the workers' compensation liability |  |
Beginning balance | $ 49,452 | $ 53,448
Changes in accruals | 3,874 | 2,275
Payments | (3,859) | (2,804)
Interest accretion | 550 | 287
Ending balance | 50,017 | $ 53,206
Other long-term assets |  |
Estimated present value of future obligations and other information |  |
Receivables for traumatic injury claims | $ 4,100 |

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- Definition Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) of amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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