Disposals (Details)		12 Months Ended
	Oct. 27, 2021 USD ($) royalty $ / shares $ / oz shares	Dec. 31, 2022 USD ($)	Sep. 18, 2022 USD ($) oz
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
Discontinued Operations, Disposed of by Sale | La Preciosa [Member]
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
Cash and cash equivalents		234,000
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net		1,211,000
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets		1,338,000
Property, plant and equipment, net		1,626,000
Mining properties, net		49,085,000
Other		746,000
TOTAL ASSETS		54,240,000
Accounts payable		311,000
Deferred tax liabilities		10,958,000
TOTAL LIABILITIES		11,269,000
Discontinued Operations, Disposed of by Sale | La Preciosa [Member] | Common Stock
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
Discontinued Operations, Disposed of by Sale | La Preciosa [Member] | Common Share Purchase Warrant
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
Disposal Group, Including Discontinued Operation, Equity Consideration, Shares | shares	0.5
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 1.09
Discontinued Operations, Disposed of by Sale | AngloGold Ashanti
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
Held-for-sale | AngloGold Ashanti
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration			$ 150,200,000
Gold ounces threshold for contingent consideration | oz			3,500,000
Contingent consideration liability			$ 50,000,000
Ownership percentage			1
Gloria And Abundancia | Discontinued Operations, Disposed of by Sale | La Preciosa [Member]
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 | Discontinued Operations, Disposed of by Sale | La Preciosa [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operation, consideration, royalties on properties	2.00%