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Segmented Information - Additional Information (Details) - Customer Concentration Risk [member] - customer | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
100% of Concentrate and Silver and Gold Sales Revenue [member] |  |
Disclosure of operating segments [line items] |  |
Number of significant customers | 26 |
Sales Revenue [member] |  |
Disclosure of operating segments [line items] |  |
Number of significant customers | 7 | 7
Customer A [member] | Sales Revenue [member] |  |
Disclosure of operating segments [line items] |  |
Concentration risk (percent) | 19.00% | 15.00%
Customer B [member] | Sales Revenue [member] |  |
Disclosure of operating segments [line items] |  |
Concentration risk (percent) | 17.00% | 15.00%
Customer C [member] | Sales Revenue [member] |  |
Disclosure of operating segments [line items] |  |
Concentration risk (percent) | 12.00% | 13.00%
Customer D [member] | Sales Revenue [member] |  |
Disclosure of operating segments [line items] |  |
Concentration risk (percent) | 11.00% | 13.00%
Customer E [member] | Sales Revenue [member] |  |
Disclosure of operating segments [line items] |  |
Concentration risk (percent) | 7.00% | 9.00%
Customer F [member] | Sales Revenue [member] |  |
Disclosure of operating segments [line items] |  |
Concentration risk (percent) | 7.00% | 8.00%
Customer G [member] | Sales Revenue [member] |  |
Disclosure of operating segments [line items] |  |
Concentration risk (percent) | 5.00% | 8.00%

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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