Disposals (Details)		1 Months Ended	12 Months Ended
	Oct. 27, 2021 USD ($) royalty $ / shares $ / oz shares	May 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 18, 2022 USD ($) oz
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration		$ 7,000,000
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			$ 0	$ 62,249,000	$ 0
Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]			Other, net
Disposal Group, Including Discontinued Operation, Deferred Consideration		1,000,000
Loss on sale		$ 12,300,000
Fair Value, Nonrecurring
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Royalties receivable fair value disclosure	$ 11,200,000
Disposal Group, Including Discontinued Operation, Number Of Royalties Disposed Of | royalty	2
AngloGold Ashanti | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			$ 62,200,000
AngloGold Ashanti | Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage						1
Cash consideration						$ 150,200,000
Gold ounces threshold for contingent consideration | oz						3,500,000
Contingent consideration liability						$ 50,000,000
La Preciosa [Member] | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	$ 15,300,000
Disposal Group, Including Discontinued Operation, Consideration, Note Receivable	$ 5,000,000
Disposal Group, Including Discontinued Operation, Equity Consideration | shares	14,000,000
Disposal group, including discontinued operation, contingent consideration, payments per silver equivalent | $ / oz	0.25
Disposal Group, Including Discontinued Operation, Contingent Consideration, Maximum	$ 50,000,000
Disposal Group, Including Discontinued Operation, Deferred Cash Consideration	8,800,000
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			$ 1,500,000
Disposal Group, Including Discontinued Operation, Consideration, Not Receivable, Carrying Amount	4,700,000
Disposal Group, Including Discontinued Operation, Deferred Cash Consideration, Carrying Value	7,400,000
Disposal Group, Including Discontinued Operation, Contingent Consideration, Maximum, Carrying Value	$ 1,200,000
Disposal Group, Including Discontinued Operation, Number Of Royalties Disposed Of | royalty	2
La Preciosa [Member] | Common Stock | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Equity Consideration | shares	13,700,000
Disposal Group, Including Discontinued Operation, Equity Consideration, Shares | shares	1
La Preciosa [Member] | Common Share Purchase Warrant | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Equity Consideration | shares	2,200,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 1.09
Gloria And Abundancia | La Preciosa [Member] | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operation, consideration, royalties on properties	1.25%
Areas Other Than Gloria And Abundancia | La Preciosa [Member] | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operation, consideration, royalties on properties	2.00%