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Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2020
Disclosure of income tax [Abstract]  
Components of income tax expense
Components of Income Tax Expense
 20202019
Current tax expense (recovery)  
Recognized in profit or loss in current year$99,013 $95,219 
Adjustments recognized in the current year with respect to prior years(658)(3,090)
 98,355 92,129 
Deferred tax expense (recovery)  
Deferred tax recovery recognized in the current year14,667 (13,079)
Adjustments recognized in the current year with respect to prior years433 (5,003)
Benefit from previously unrecognized losses, and other temporary differences(42,379)— 
Decrease in deferred tax liabilities due to tax impact of NRV charge to inventory4,481 (2,779)
 (22,798)(20,861)
Income tax expense$75,557 $71,268 
Reconciliation of effective income tax rate
Reconciliation of Effective Income Tax Rate
 20202019
Earnings before taxes and non-controlling interest$252,012 $182,512 
Statutory Canadian income tax rate27.00 %27.00 %
Income tax expense based on above rates$68,043 $49,278 
Increase (decrease) due to:
Non-deductible expenditures9,915 7,271 
Foreign tax rate differences16,179 2,507 
Change in net deferred tax assets not recognized:
   - Argentina exploration expenditures(3,485)3,117 
   - Other deferred tax assets(61,280)(11,211)
Effect of other taxes paid (mining and withholding)22,545 21,307 
Effect of foreign exchange on tax expense18,598 (7,651)
Non-taxable impact of foreign exchange(3,000)4,158 
Change in non-deductible portion of reclamation liabilities8,605 8,207 
Change in current tax expense estimated for prior years— (6,694)
Other(563)979 
Income tax expense$75,557 $71,268 
Effective income tax rate29.98 %39.05 %
Analysis of deferred tax assets and liabilities
The following is the analysis of the deferred tax assets (liabilities) presented in the consolidated financial statements: 
 20202019
Net deferred tax liability, beginning of year$(140,361)$(136,575)
Initial deferred tax liability associated with the Tahoe Acquisition— (24,080)
Recognized in net earnings in the year22,798 20,861 
Reduction due to Mexican de-consolidation payments applied to current tax— (705)
Other102 138 
Net deferred liability, end of year(117,461)(140,361)
Deferred tax assets57,850 36,447 
Deferred tax liabilities(175,311)(176,808)
Net deferred tax liability$(117,461)$(140,361)
Components of deferred tax assets and liabilities
The deferred tax assets (liabilities) are comprised of the various temporary differences, as detailed below: 
 2020
2019(1)
Deferred tax assets (liabilities) arising from:  
Closure and decommissioning costs$26,482 $16,002 
Tax losses, resource pools and mining tax credits140,608 122,187 
Deductible Mexican mining taxes3,286 2,701 
Accounts payable and accrued liabilities17,737 17,974 
Trade and other receivables13,290 17,194 
Provision for doubtful debts and inventory adjustments(21,354)(7,145)
Short-term investments(15,649)(15,295)
Mineral properties, plant, and equipment(274,483)(278,707)
Estimated sales provisions(14,028)(23,026)
Other temporary differences and provisions6,650 7,754 
Net deferred tax liability$(117,461)$(140,361)
(1)Recast comparative deferred tax assets and liabilities to provide consistency with current presentation.
Deductible temporary differences, unused tax losses and unused tax credits for which no deferred tax assets have been recognised
Deductible temporary differences, unused tax losses and unused tax credits for which no deferred tax assets have been recognized are attributable to the following:
 2020
2019 (1)
Tax loss (revenue in nature)$284,626 $202,181 
Net tax loss (capital in nature)32,378 34,646 
Resource pools and other tax credits48,773 260,413 
Financing fees2,003 2,849 
Mineral properties, plant, and equipment58,644 118,380 
Closure and decommissioning costs136,728 141,018 
Exploration and other expenses not currently deductible33,587 53,595 
Intercompany debt12,160 11,339 
Doubtful debt and inventory41,378 23,895 
Payroll and vacation accruals1,491 1,055 
Other temporary differences3,562 3,399 
 $655,330 $852,770 
(1)Recast comparative temporary differences, unused tax losses and unused tax credits to provide consistency with current presentation.
Schedule of operating loss carryforwards
Included in the above amounts are operating losses, which if not utilized will expire as follows:
At December 31, 2020
 CanadaUSPeruMexicoBarbadosArgentinaTotal
2021$— $317 $26 $— $8 $1 $352 
2022— 529 — — 12 3 544 
2023 – and after269,001 11,746 314 2,406 183 80 283,730 
Total tax losses$269,001 $12,592 $340 $2,406 $203 $84 284,626 
At December 31, 2019      
 CanadaUSPeruMexicoBarbadosArgentinaTotal
2020$— $79 $2,110 $— $7 $1 $2,197 
2021— 318 28 — 7 2 355 
2022 – and after (1)
178,339 13,185 1,778 2,792 106 3,429 199,629 
Total tax losses (1)
$178,339 $13,582 $3,916 $2,792 $120 $3,432 $202,181 
(1)Recast comparative operating losses to provide consistency with current presentation.