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Income taxes - Summary of income tax expense attributable to geographical jurisdiction (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of geographical areas [line items]    
Income tax expense (recovery) $ 139,970 $ 82,361
Turkey    
Disclosure of geographical areas [line items]    
Income tax expense (recovery) 93,144 68,793
Canada    
Disclosure of geographical areas [line items]    
Income tax expense (recovery) 36,622 28,412
Greece    
Disclosure of geographical areas [line items]    
Income tax expense (recovery) 8,307 (8,763)
Romania    
Disclosure of geographical areas [line items]    
Income tax expense (recovery) $ 1,897 $ (6,081)