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ASSETS AND LIABILITIES HELD FOR SALE - Components (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Assets held for sale | $ 63,670 | $ 0
Liabilities held for sale | 6,903 | $ 0
Disposal Group, Disposed of by Sale | Pitarrilla Project |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Cash and cash equivalents | 205 |
Trade and other receivables | 31 |
Prepaids and other current assets | 122 |
Mineral properties, plant, and equipment, net | 62,179 |
Other non-current assets | 1,133 |
Assets held for sale | 63,670 |
Accounts payable | 24 |
Accrued liabilities and other | 864 |
Deferred income tax liabilities | 5,952 |
Reclamation and remediation costs | 63 |
Liabilities held for sale | $ 6,903 |

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