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WORKERS' COMPENSATION AND PNEUMOCONIOSIS (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Reconciliation of changes in the workers' compensation liability |  |
Beginning balance | $ 47,975 | $ 49,452
Changes in accruals | 3,125 | 3,874
Payments | (4,048) | (3,859)
Interest accretion | 509 | 550
Ending balance | 47,561 | $ 50,017
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 -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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