Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Inventories [Abstract] | ||
| Raw coal | $ 20,793 | $ 35,006 |
| Saleable coal | 103,298 | 80,174 |
| Total coal inventories | 124,091 | 115,180 |
| Supplies and other inventory | 83,653 | 79,985 |
| Total inventories | $ 207,744 | $ 195,165 |
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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/disclosureRef
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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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