XML 173 R117.htm IDEA: XBRL DOCUMENT v3.22.1
Income taxes - Summary of key factors affecting income tax expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]    
Earnings from continuing operations before income tax $ 151,066 $ 206,328
Canadian statutory tax rate 2700.00% 2700.00%
Tax expense on net earnings at Canadian statutory tax rate $ 40,788 $ 55,709
Items that cause an increase (decrease) in income tax expense:    
Foreign income subject to different income tax rates than Canada (13,618) (21,893)
Reduction in Greek income tax rate (11,434) 0
Increase in Turkish income tax rate 6,150 0
Turkish investment tax credits (47,394) (21,669)
Québec mineral tax 12,089 12,389
Non-tax effected operating losses 9,734 26,040
Non-deductible expenses and other items 33,413 7,400
Flow-through share renouncement 6,397 0
Impairment and write-down of Stratoni assets 13,359 0
Turkish inflation adjustment exemption benefit (10,761) 0
Foreign exchange related to the weakening of the Turkish Lira 77,254 18,295
Foreign exchange and other translation adjustments 16,292 (1,426)
Future and current withholding tax on foreign income dividends 7,655 8,705
Other 46 (1,189)
Income tax expense $ 139,970 $ 82,361