COMMITMENTS AND CONTINGENCIES - Prepayment agreement (Details) - Auramet International LLC ("Auramet") - Prepayment Agreement - Guarantee Obligation - Precious metal - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Other Commitments
Net proceeds from sales on a Supplier Advance Basis	$ 104,100,000	$ 8,400,000
Revenue from sales on a Supplier Advance Basis	100,100,000	4,900,000
Remaining net proceeds recorded as deferred revenue	$ 7,500,000	$ 3,500,000
Number of ounces of gold	1,690	1,335