Fair Value Measurements - Narrative (Details)		1 Months Ended	9 Months Ended
	Oct. 27, 2021 USD ($) royalty $ / oz	May 31, 2023 USD ($)	Sep. 30, 2023 USD ($) $ / oz	Sep. 18, 2022 USD ($) oz
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration asset fair value disclosure			$ 13,000,000
Cash consideration		$ 7,000,000
Deferred consideration		1,000,000
Loss on sale		12,300,000
Fair value of cash consideration		$ 800,000
Measurement Input, Silver Price Volatility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Disposal group, consideration, measurement input			0.335
Measurement Input, Gold Price Volatility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Disposal group, consideration, measurement input			0.190
Measurement Input, Weighted Average Cost of Capital
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Disposal group, consideration, measurement input			0.155
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assumed silver price (US Dollars per ounce) | $ / oz			22
Assumed gold price (US Dollars per ounce) | $ / oz			1,700
Contingent Consideration Asset, Measurement Input			5 years
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assumed silver price (US Dollars per ounce) | $ / oz			25
Assumed gold price (US Dollars per ounce) | $ / oz			1,930
Contingent Consideration Asset, Measurement Input			30 years
Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Royalties receivable fair value disclosure	$ 11,200,000
Contingent consideration asset fair value disclosure	$ 1,200,000
Discontinued Operations, Disposed of by Sale | La Preciosa [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Disposal group, including discontinued operation, contingent consideration, payments per silver equivalent | $ / oz	0.25
Disposal Group, Including Discontinued Operation, Number Of Royalties Disposed Of | royalty	2
Disposal Group, Including Discontinued Operation, Contingent Consideration, Maximum	$ 50,000,000
Held-for-sale | AngloGold Ashanti
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability				$ 50,000,000
Gold ounces threshold for contingent consideration | oz				3,500,000
Held-for-sale | AngloGold Ashanti | Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Disposal group, consideration, measurement input				0.081
Gloria And Abundancia | Discontinued Operations, Disposed of by Sale | La Preciosa [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discontinued operation, consideration, royalties on properties	1.25%
Areas Other Than Gloria And Abundancia | Discontinued Operations, Disposed of by Sale | La Preciosa [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discontinued operation, consideration, royalties on properties	2.00%