Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Inventories [Abstract] | ||
| Raw coal | $ 27,820 | $ 35,006 |
| Saleable coal | 52,984 | 80,174 |
| Total coal inventories | 80,804 | 115,180 |
| Supplies and other inventory | 82,601 | 79,985 |
| Total inventories | 163,405 | 195,165 |
| Net realizable value of inventory | $ 37,400 | $ 41,200 |
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- Definition Raw coal. No definition available.
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- Definition Saleable coal. No definition available.
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- Definition Carrying amount as of the balance sheet date of coal, which is a combustible rock or minerals which are extracted from the ground and used as fuel. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value portion of inventory expected to be realized or consumed after one year or normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before valuation and LIFO reserves of other supplies used within the manufacturing or production process expected to be consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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