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Income taxes (Tables)
 12 Months Ended
Dec. 31, 2022
Major components of tax expense (income) [abstract]  
Summary of income tax expense
Total income tax expense consists of:
2022 2021 
Current tax expense$69,701 $90,174 
Deferred tax (recovery) expense(8,477)47,899 
$61,224 $138,073 
Summary of income tax expense attributable to geographical jurisdiction
Income tax expense attributable to each geographical jurisdiction for the Company is as follows:
2022 2021 
Turkiye$30,366 $93,144 
Canada16,934 36,622 
Greece13,924 8,307 
$61,224 $138,073 
Summary of key factors affecting income tax expense
The key factors affecting income tax expense for the years are as follows:
20222021
Earnings from continuing operations before income tax$11,856 $157,464 
Canadian statutory tax rate27%27%
Tax expense on net earnings at Canadian statutory tax rate$3,201 $42,515 
Items that cause an increase (decrease) in income tax expense:
Foreign income subject to different income tax rates than Canada1,032 (14,322)
Reduction in Greek income tax rate— (11,434)
(Decrease) increase in Turkish income tax rate(4,755)6,150 
Turkish investment tax credits(9,958)(47,394)
Québec mineral tax12,539 12,089 
Non-tax effected operating losses1,910 9,477 
Non-deductible expenses and other items9,194 33,406 
Flow-through share renouncement 4,388 6,397 
Impairment and write-down of Stratoni assets— 13,359 
Turkish inflation adjustment exemption benefit(18,048)(10,761)
Foreign exchange related to the weakening of the Turkish Lira26,619 77,254 
Foreign exchange and other translation adjustments14,079 13,636 
Future and current withholding tax on foreign income dividends19,993 7,655 
Other1,030 46 
Income tax expense$61,224 $138,073 
Summary of change in net deferred tax position
The change in the Company’s net deferred tax position was as follows:
20222021
Net deferred income tax liability
Balance at January 1,$439,195 $414,554 
Deferred income tax (recovery) expense in the statement of operations(8,477)47,899 
Deferred tax assets from acquisition of QMX Gold Corporation— (14,122)
Deferred tax (recovery) expense related to discontinued operations(20,039)1,897 
Deferred tax impact on disposition of Tocantinzinho
— (11,010)
Deferred tax recovery in the consolidated statement of other comprehensive income(460)(23)
Balance at December 31,$410,219 $439,195 
Summary of temporary difference
The composition of the Company’s net deferred income tax assets and liabilities and deferred tax expense (recovery) is as follows:
Type of temporary differenceDeferred tax assetsDeferred tax liabilitiesExpense (Recovery)
202220212022202120222021
Property, plant and equipment$— $— $446,695 $490,868 $(44,173)$37,727 
Loss carryforwards17,532 19,166 — — 1,634 22,206 
Liabilities27,960 34,012 — — 6,052 (5,909)
Future withholding taxes— — 5,555 — 5,555 (6,234)
Other items— 6,882 3,461 8,387 2,416 2,006 
$45,492 $60,060 $455,711 $499,255 $(28,516)$49,796 
Less: Discontinued operations— (7,632)— (27,671)20,039 (1,897)
Balance at December 31,$45,492 $52,428 $455,711 $471,584 $(8,477)$47,899 
Summary of unrecognized deferred tax assets
Unrecognized deferred tax assets20222021
Tax losses$191,448 $192,880 
Other deductible temporary differences99,835 85,142 
$291,283 $278,022 
Summary of unrecognized tax losses The gross amount of tax losses for which no deferred tax asset was recognized expire as follows:
2022Expiry date2021Expiry date
Canadian net operating loss carryforwards$448,935 2029-2042$490,774 2026-2041
Canadian capital losses229,146 none240,081 none
Greek net operating loss carryforwards177,188 2023-2027125,401 2022-2026
Romanian net operating loss carryforwards1,837 2023-20291,817 2022-2028