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v3.25.3

Fair Value Measurement (Details) oz in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 USD ($) oz | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Fair Value Measurement [Line Items] |  |  |  |
Long-term gold prices | oz | 2,006 |  |  |
Remaining term | 18 years 3 months 18 days |  |  |
Inflation rate | 4.70% |  |  |
Market risk percentage | 5.50% |  |  |
Accretion expense | $ 871,000 |  | $ 1,037,000 |
PERCEPTION CAPITAL CORP IV [Member] |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |
Assets held in trust account |  |  | $ 3,954,190 | $ 52,977,929
Royalty Liabilities [Member] |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |
Discount rate percentage | 10.00% |  |  |
Asset Retirement Obligation [Member] |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |
Discount rate | 12.50% |  |  |
Accretion expense | $ 1,908,000 | $ 871,000 |  |

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