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Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Other operating activities    
Unrealized foreign exchange losses $ 12,840 $ 6,703
Share-based compensation expense 3,936 5,128
Interest expense (Note 25) 5,311 3,660
Investment loss 16,221 59,722
Gains on derivatives (Note 8(d)) (7,336) (5,393)
Loss from equity investees (Note 13) (45,033) (4,347)
Losses (gains) on disposition of mineral properties, plant and equipment (Note 11) 2,439 (32,167)
Net realizable value inventory charge (Note 22) 97,742 8,719
Other inflows (outflows) of cash, classified as operating activities 17,190 (22,069)
Changes in non-cash operating working capital items:    
Trade and other receivables (12,692) (2,874)
Inventories (50,035) (82,885)
Prepaid expenses 2,546 1,049
Accounts payable and accrued liabilities 20,711 18,086
Provisions (2,567) (4,445)
Changes in non-cash working capital (42,037) (71,069)
Significant non-cash items [Abstract]    
Increase (decrease) through share-based payment transactions, equity 2,497 3,312
Cash and Cash Equivalents    
Cash in banks 107,005 283,550
Issued capital [member]    
Significant non-cash items [Abstract]    
Increase (decrease) through share-based payment transactions, equity $ 2,497 $ 3,312