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Commitments and Contractual Obligations - Narrative (Details) m in Thousands, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 01, 2021 $ / oz | Apr. 30, 2007 USD ($) $ / oz | Jun. 30, 2020 $ / oz m | Dec. 31, 2021 T
Disclosure of contingent liabilities [line items] |  |  |  |
Consideration paid | $ |  | $ 57,500 |  |
Silver price ($/oz) | $ / oz | 11.54 | 3.83 | 2.00 |
Expansion drilling (in meters) | m |  |  | 30 |
Hellas Gold SA ("Hellas") | Zinc |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Number of dry metric tonnes |  |  |  | 50,000
Hellas Gold SA ("Hellas") | Lead And Silver Concentrates |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Number of dry metric tonnes |  |  |  | 12,000
Hellas Gold SA ("Hellas") | Gold Concentrate |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Number of dry metric tonnes |  |  |  | 130,000
Tuprag Metal Madencilik Sanayi Ve Ticaret AS | Gold Concentrate |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Number of dry metric tonnes |  |  |  | 55,000

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