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Provision for rehabilitation and closure costs (Tables)
 12 Months Ended
Dec. 31, 2022
Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]  
Reconciliation of Provision for Rehabilitation and Closure Costs
December 31, 2022December 31, 2021
Balance, beginning of year
19,037 $18,970 
Change in estimates1,854 2,225 
Accretion expense2,191 1,077 
Settled(2,238)(2,039)
Foreign exchange1,328 (1,196)
Balance, end of year
$22,172 19,037