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Fixed Assets, Mineral Leaseholds, and Asset Retirement Obligations (Forecast of Accretion Expense) (Details) $ in Thousands | Mar. 31, 2022 USD ($)
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Fixed Assets And Asset Retirement Obligations [Abstract] |
Remainder of 2022 | $ 9,486
2023 | 10,583
2024 | 9,767
2025 | 10,469
2026 | $ 8,216

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