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COMMITMENTS AND CONTINGENCIES - Reclamation obligations (Details) - Surety Bonds $ in Millions, $ in Millions | 6 Months Ended
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Jun. 30, 2025 USD ($) | Jun. 30, 2025 CAD ($)
Reclamation Bonds |  |
Percentage of annual fees on surety bonds | 2.40% | 2.40%
Percentage of required deposit on value of surety bonds | 7.30% | 7.30%
Restricted cash | $ 4.0 |
Nevada |  |
Reclamation Bonds |  |
Surety bonding obligation | 33.5 |
Canada |  |
Reclamation Bonds |  |
Surety bonding obligation | $ 13.8 | $ 18.9

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