Property, Plant, and Equipment and Assets Held-For-Sale, Net - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($) water_treatment_system mill	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) water_treatment_system mill	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) mill water_treatment_system
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation expense \| $	$ 500	$ 500	$ 1,500	$ 1,700
Assets held-for-sale \| $	$ 5,698		$ 5,698		$ 5,698
SAG Mill
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of mills \| mill	1		1		1
Ball Mill
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of mills \| mill	1		1		1
Water treatment system
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of water treatment systems \| water_treatment_system	1		1		1