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Financial instruments by category - Summary of Carrying Value and Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Aug. 26, 2021
Disclosure of fair value measurement of assets [line items]        
Cash and cash equivalents $ 540,473 $ 279,735 $ 481,327  
Other assets 185,209 120,065    
Derivative financial assets 9,538 0    
Accounts payable and accrued liabilities (254,030) (191,705)    
Debt (636,059) (494,414)    
Total derivative liabilities (19,122) 0    
Level 1 | Commercial Loans        
Disclosure of fair value measurement of assets [line items]        
Debt 0      
Level 1 | Greek Recovery and Resilience Facility (RRF)        
Disclosure of fair value measurement of assets [line items]        
Debt 0      
Level 1 | Revolving VAT facility        
Disclosure of fair value measurement of assets [line items]        
Debt 0      
Carrying amount | Level 1        
Disclosure of fair value measurement of assets [line items]        
Cash and cash equivalents 540,473 279,735    
Term deposits 1,136 0    
Restricted cash 2,085 2,052    
Other receivables and deposits 21,670 14,999    
Other assets 170 170    
Marketable securities 100,794 54,706    
Investments in debt securities 8,004 7,043    
Settlement receivable 0 0    
Derivative financial assets 0 0    
Turkish Lira deposits 0 0    
Accounts payable and accrued liabilities (202,933) (162,799)    
Net financial assets (liabilities) 471,399 195,906    
Carrying amount | Level 1 | Senior Notes due 2029        
Disclosure of fair value measurement of assets [line items]        
Debt 0 0    
Carrying amount | Level 1 | Commercial Loans        
Disclosure of fair value measurement of assets [line items]        
Debt   0    
Carrying amount | Level 1 | Greek Recovery and Resilience Facility (RRF)        
Disclosure of fair value measurement of assets [line items]        
Debt   0    
Carrying amount | Level 1 | Revolving VAT facility        
Disclosure of fair value measurement of assets [line items]        
Debt   0    
Carrying amount | Level 1 | Foreign currency collars        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 0 0    
Carrying amount | Level 1 | Euro forward contracts        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 0 0    
Total derivative liabilities 0 0    
Carrying amount | Level 1 | Gold collars        
Disclosure of fair value measurement of assets [line items]        
Total derivative liabilities 0 0    
Carrying amount | Level 1 | Gold commodity swaps        
Disclosure of fair value measurement of assets [line items]        
Total derivative liabilities 0 0    
Carrying amount | Level 1 | Copper commodity swaps        
Disclosure of fair value measurement of assets [line items]        
Total derivative liabilities 0 0    
Carrying amount | Level 1 | Interest rate swaps        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 0 0    
Total derivative liabilities 0 0    
Carrying amount | Level 1 | Foreign currency forward contracts        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 0 0    
Carrying amount | Level 2        
Disclosure of fair value measurement of assets [line items]        
Cash and cash equivalents 0 0    
Term deposits 0 0    
Restricted cash 0 0    
Other receivables and deposits 0 0    
Other assets 0 0    
Marketable securities 0 0    
Investments in debt securities 0 0    
Settlement receivable 49,387 33,393    
Derivative financial assets 5,635 3,676    
Turkish Lira deposits 0 35,000    
Accounts payable and accrued liabilities 0 0    
Net financial assets (liabilities) (596,256) (426,021)    
Carrying amount | Level 2 | Senior Notes due 2029        
Disclosure of fair value measurement of assets [line items]        
Debt (498,326) (498,090)    
Carrying amount | Level 2 | Commercial Loans        
Disclosure of fair value measurement of assets [line items]        
Debt (100,890) 0    
Carrying amount | Level 2 | Greek Recovery and Resilience Facility (RRF)        
Disclosure of fair value measurement of assets [line items]        
Debt (39,209) 0    
Carrying amount | Level 2 | Revolving VAT facility        
Disclosure of fair value measurement of assets [line items]        
Debt (3,269) 0    
Carrying amount | Level 2 | Foreign currency collars        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 1,338 0    
Carrying amount | Level 2 | Euro forward contracts        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 1,513 0    
Total derivative liabilities (35) 0    
Carrying amount | Level 2 | Gold collars        
Disclosure of fair value measurement of assets [line items]        
Total derivative liabilities (3,026) 0    
Carrying amount | Level 2 | Gold commodity swaps        
Disclosure of fair value measurement of assets [line items]        
Total derivative liabilities (2,966) 0    
Carrying amount | Level 2 | Copper commodity swaps        
Disclosure of fair value measurement of assets [line items]        
Total derivative liabilities (1,032) 0    
Carrying amount | Level 2 | Interest rate swaps        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 458 0    
Total derivative liabilities (12,063) 0    
Carrying amount | Level 2 | Foreign currency forward contracts        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 6,229 0    
At fair value        
Disclosure of fair value measurement of assets [line items]        
Cash and cash equivalents 540,473 279,735    
Term deposits 1,136 0    
Restricted cash 2,085 2,052    
Other receivables and deposits 21,670 14,999    
Other assets 170 170    
Marketable securities 100,794 54,706    
Investments in debt securities 8,004 7,043    
Settlement receivable 49,387 33,393    
Derivative financial assets 5,635 3,676    
Turkish Lira deposits 0 35,000    
Accounts payable and accrued liabilities (202,933) (162,799)    
Net financial assets (liabilities) (98,131) (169,425)    
At fair value | Senior Notes due 2029        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets       $ 4,806
Debt (471,600) (437,400)    
At fair value | Commercial Loans        
Disclosure of fair value measurement of assets [line items]        
Debt (100,890) 0    
At fair value | Greek Recovery and Resilience Facility (RRF)        
Disclosure of fair value measurement of assets [line items]        
Debt (39,209) 0    
At fair value | Revolving VAT facility        
Disclosure of fair value measurement of assets [line items]        
Debt (3,269) 0    
At fair value | Foreign currency collars        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 1,338 0    
At fair value | Euro forward contracts        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 1,513 0    
Total derivative liabilities (35) 0    
At fair value | Gold collars        
Disclosure of fair value measurement of assets [line items]        
Total derivative liabilities (3,026) 0    
At fair value | Gold commodity swaps        
Disclosure of fair value measurement of assets [line items]        
Total derivative liabilities (2,966) 0    
At fair value | Copper commodity swaps        
Disclosure of fair value measurement of assets [line items]        
Total derivative liabilities (1,032) 0    
At fair value | Interest rate swaps        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets 458 0    
Total derivative liabilities (12,063) 0    
At fair value | Foreign currency forward contracts        
Disclosure of fair value measurement of assets [line items]        
Derivative financial assets $ 6,229 $ 0