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v3.25.2

Nature of Operations and Basis of Presentation (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) segment | Jun. 30, 2024 USD ($) | Mar. 31, 2025 USD ($) | Dec. 31, 2024 USD ($)
Long-term Purchase Commitment [Line Items] |  |  |  |  |  |
Number of operating segments | segment |  |  | 3 |  |  |
Long-term contracts percentage | 100.00% |  | 100.00% |  |  |
Prepaid profit sharing | $ 12,041 |  | $ 12,041 |  |  | $ 0
Gain (loss) from liability settlement | 3,590 | $ 0 | 3,590 | $ 0 |  |
Excess funding liability | 5,450 |  | 5,450 |  |  | 0
Assets held for sale | 17,022 |  | 17,022 |  |  | 14,159
Pension Plan |  |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |  |
Prepaid profit sharing | 12,000 |  | 12,000 |  | $ 14,500 |
Payments for liability settlement | 10,900 |  |  |  |  |
Gain (loss) from liability settlement | 3,600 |  |  |  |  |
Liability settlement, amount awarded to other party | 5,500 |  |  |  |  |
Excess funding liability | 5,400 |  | 5,400 |  |  |
Minerals and Royalties |  |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |  |
Proceeds from sale, land, held-for-use |  | 7,000 |  |  |  |
Gain (loss) on sale of properties |  | 4,500 |  |  |  |
Eiger, LLC |  |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |  |
Investments in unconsolidated subsidiaries | 18,954 |  | 18,954 |  |  | 19,147
Eiger, LLC | Minerals and Royalties |  |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |  |
Investments in unconsolidated subsidiaries | 19,000 |  | 19,000 |  |  | $ 19,100
Income from equity method investments | $ 300 | $ 100 | $ 800 | $ 100 |  |

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