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Provision for Site Reclamation and Closure (Narrative) (Details) - Provision for Decommissioning, Restoration and Rehabilitation Costs [Member] $ in Thousands, $ in Thousands | Dec. 31, 2023 CAD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 CAD ($)
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Disclosure Of Provision For Site Reclamation And Closure [Line Items] |  |  |
Other provisions, undiscounted cash flows | $ 6,246 | $ 6,065 | $ 4,938
Major assumptions made concerning future events, other provisions, inflation rate | 2.25% | 2.50% | 2.50%
Major assumptions made concerning future events, other provisions, discount rate | 3.02% | 3.28% | 1.68%

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- Definition The assumed inflation rate for the uncertainties relating to the amount or timing of outflows of economic benefits for other provisions. + References No definition available. + Details
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- Definition The undiscounted amount of provisions other than provisions for employee benefits. + References No definition available. + Details
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