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v3.25.1

Unconsolidated Subsidiaries (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Variable Interest Entity [Line Items] |  |  |
Variable interest entity, reporting entity involvement, maximum risk of loss | $ 5,500 |  | $ 5,500
Earnings of unconsolidated operations | 15,986 | $ 13,307 |
Coal Mining and NAMining |  |  |
Variable Interest Entity [Line Items] |  |  |
Earnings of unconsolidated operations | $ 15,400 | $ 13,400 |
Unconsolidated Subsidiaries |  |  |
Variable Interest Entity [Line Items] |  |  |
Ownership percentage | 100.00% |  |
Income from equity method investee | $ 16,009 |  | 14,137
Other Noncurrent Assets |  |  |
Variable Interest Entity [Line Items] |  |  |
Income from equity method investee | $ 16,000 |  | $ 14,100

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