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Reclamation and Remediation - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Undiscounted reclamation liabilities | $ 1,949 | $ 1,833 | $ 1,890
Asset Retirement Obligation | 8,417 | 1,279 | $ 1,208
Exploration reclamation liability | 10,366 | 3,112 |
Increase in estimated liability | 6,400 |  |
Don David Gold Mine |  |  |
Undiscounted reclamation liabilities | $ 1,900 | 1,800 |
Reclamation and remediation discount rate | 8.00% |  |
Asset Retirement Obligation | $ 8,400 | 1,300 |
Back Forty Project |  |  |
Exploration reclamation liability | $ 400 | $ 600 |

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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 25 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=116646717&loc=d3e6290-110844 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of a reclamation and mine closing liability that is associated with a legal obligation for the closure and reclamation of a mine including the removal of buildings, equipment, machinery and other physical remnants of mining, closure of tailings impoundments, leach pads and other mine features, and contouring, covering and revegetation of waste rock piles and other disturbed areas. + References No definition available. + Details
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