Restricted Cash and Cash Equivalents - Additional Disclosure (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Surety bond | ||
| Restricted Cash and Cash Equivalents | ||
| Reclamation bonding requirement | $ 47.3 | $ 50.4 |
| X | ||||||||||
- Definition Represents the amount of reclamation obligations, which are required to be covered by surety performance bonding, as of the balance sheet date. No definition available.
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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