Acquisitions - Purchase Price Allocation (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended				6 Months Ended
		Mar. 20, 2026	Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2026	Dec. 31, 2025
Assets:
Short-term receivables			$ 13,669				$ 13,669
Long-term stockpile	[1]		281,078				281,078	$ 42,076
LIABILITIES
Goodwill			$ 625,812				$ 625,812	$ 625,812
Common stock, shares issued (in shares)			1,028,536,378				1,028,536,378	642,092,761
Stock options exercised (in shares)							77,616
Common Stock
LIABILITIES
Stock options exercised (in shares)			32,000	45,000	2,139,000
Common Stock | Royalty Settlement [Domain]
LIABILITIES
Common stock issued for investment (in shares)						595,000
SilverCrest | Common Stock | NewGold Acquisition Replacement Shares
LIABILITIES
Common stock issued for investment (in shares)							1,400,000
NewGold
Business Combination [Line Items]
Common shares issued (value)		$ 6,900,000	$ 6,938,701
Total purchase price			6,938,701
Assets:
Cash and cash equivalents			128,259				$ 128,259
Inventory			467,275				467,275
Prepaid expenses and other			17,379				17,379
Property, plant and equipment and mining properties			9,585,545				9,585,545
Long-term stockpile			218,159				218,159
Other			3,303				3,303
Total Assets			10,433,589				10,433,589
LIABILITIES
Accounts payable			94,179				94,179
Accrued liabilities and other(1)	[2]		45,170				45,170
Debt			414,767				414,767
Reclamation			144,443				144,443
Deferred tax liabilities	[3]		2,793,678				2,793,678
Other long-term liabilities			2,651				2,651
Total liabilities			3,494,888				3,494,888
Net assets acquired			$ 6,938,701				$ 6,938,701
Common stock, shares issued (in shares)		392,682,578
Shares issued (in dollars per share)			$ 17.67				$ 17.67

[1] Includes $239.0 million and $42.1 million at Rainy River and Rochester at June 30, 2026, respectively. Includes $42.1 million at Rochester at December 31, 2025

[2] In connection with the transaction, 1.4 million cash-settled replacement restricted units were granted.

[3] Deferred income tax liabilities represent the future tax expense associated with the differences between the fair value allocated to assets and liabilities and a tax basis increase to the fair value of the assets acquired in Canada and the historical carryover tax basis of assets and liabilities in all other jurisdictions.