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ACQUISITIONS AND DIVESTITURES - Acquisition of Hod Maden (Details) $ in Thousands			9 Months Ended
		May 08, 2023 USD ($) goldEquivalentOunce	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Business Acquisition [Line Items]
Payments to acquire businesses, gross	[1]		$ 0	$ 119,925
Contingent consideration			$ 28,156		$ 29,648
Lydia Mines | Hod Maden
Business Acquisition [Line Items]
Ownership percentage by parent (as a percent)		70.00%
Horizon | Hod Maden
Business Acquisition [Line Items]
Ownership percentage by noncontrolling owners (as a percent)		30.00%
Hod Maden
Business Acquisition [Line Items]
Payments to acquire businesses, gross		$ 120,000		$ 120,000
Business acquisition, option, percentage of voting interests acquired (as a percent)		30.00%
Transaction costs		$ 400
Hod Maden | Completion of Operational Milestones
Business Acquisition [Line Items]
Contingent consideration		30,000
Hod Maden | Delineation of New Reserves
Business Acquisition [Line Items]
Contingent consideration		$ 84,000
Business combination, contingent consideration, liability, additional mineral reserves required | goldEquivalentOunce		500,000
Lydia Mines | Hod Maden
Business Acquisition [Line Items]
Voting interest acquired (as a percent)		10.00%
[1] Acquisitions, net for the nine months ended September 30, 2023 is comprised of $120.0 million cash paid in the acquisition of Hod Maden Project, net of cash and cash equivalents acquired.

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