SUBSEQUENT EVENTS (Details) $ in Thousands, $ in Millions				3 Months Ended		9 Months Ended
	Oct. 20, 2025 USD ($) shares	Oct. 20, 2025 CAD ($) shares	Oct. 03, 2025 USD ($) oz	Sep. 30, 2025 USD ($) shares	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) shares	Sep. 30, 2024 USD ($)	Dec. 31, 2024 shares
Subsequent Event [Line Items]
Common stock, shares outstanding (in shares) | shares				65,763,800		65,763,800		65,691,151
Acquisition related costs				$ 12,798	$ 0	$ 12,798	$ 0
Subsequent Event
Subsequent Event [Line Items]
Common stock, shares outstanding (in shares) | shares	84,400,000	84,400,000
Subsequent Event | Mount Milligan Deferred Gold Consideration
Subsequent Event [Line Items]
Asset acquisition, gold delivered, weight (ounces) | oz			11,111
Asset acquisition, gold deliverable, weight (ounces) | oz			38,889
Asset acquisition, consideration transferred			$ 44,200
Sandstorm | Subsequent Event
Subsequent Event [Line Items]
Business combination, shares issued (in shares) | shares	18,600,000	18,600,000
Business combination, stock options assumed (in shares) | shares	700,000	700,000
Payments to acquire businesses, gross	$ 380,900
Horizon | Subsequent Event
Subsequent Event [Line Items]
Payments to acquire businesses, gross		$ 127.1
Business combination, warrants and rights outstanding (in shares)		$ 40.6
Sandstorm and Horizon
Subsequent Event [Line Items]
Acquisition related costs						$ 12,800