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Leases
 12 Months Ended
Dec. 31, 2022
Disclosure of Leases [Abstract]  
Leases
17. LEASES
a.ROU assets
The following table summarizes changes in ROU assets for the year ended December 31, 2022, which have been recorded in mineral properties, plant and equipment on the consolidated statements of financial position:
December 31,
2022		December 31,
2021
Opening net book value$29,496 $33,543 
Additions18,977 9,924 
Depreciation(14,961)(12,444)
Other(3,249)(1,527)
Closing net book value$30,263 $29,496 
b.Lease obligations
The following table presents a reconciliation of the Company's undiscounted cash flows at December 31, 2022 and December 31, 2021 to their present value for the Company's lease obligations:
December 31,
2022		December 31,
2021
Within one year$14,139 $11,690 
Between one and five years17,592 16,676 
Beyond five years14,412 16,934 
Total undiscounted lease obligations46,143 45,300 
Less future interest charges(13,029)(14,739)
Total discounted lease obligations33,114 30,561 
Less: current portion of lease obligations(13,608)(10,663)
Non-current portion of lease obligations$19,506 $19,898