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REVENUE - Narrative (Details) - Concentrate Metal Sales Agreement oz in Millions, lb in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($) lb oz $ / pound $ / ounce	Mar. 31, 2024 USD ($)
Disaggregation of Revenue [Line Items]
Embedded derivative, increase (decrease) of value | $	$ 1.6	$ (2.5)
Silver
Disaggregation of Revenue [Line Items]
Notional ounce/pound | oz	6.8
Average price per ounce/pound (in dollars per ounce/pound) | $ / ounce	31.63
Lead
Disaggregation of Revenue [Line Items]
Notional ounce/pound | lb	34.8
Average price per ounce/pound (in dollars per ounce/pound) | $ / pound	0.91
Zinc
Disaggregation of Revenue [Line Items]
Notional ounce/pound | lb	1.0
Average price per ounce/pound (in dollars per ounce/pound) | $ / pound	1.34

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