Disclosure of fair value measurement [Abstract] Disclosure of fair value measurement [Abstract] Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table] Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table] Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table] Types of financial liabilities [axis] Types of financial liabilities [axis] Financial liabilities, type [member] Financial liabilities, type [member] Accounts Payable, Derivative Liabilities, Borrowings, and Interest on Borrowings Accounts Payable, Derivative Liabilities, Borrowings, And Interest On Borrowings [Member] Accounts Payable, Derivative Liabilities, Borrowings, And Interest On Borrowings [Member] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount [member] Carrying amount [member] Principal Gross carrying amount [member] Borrowings by name [axis] Borrowings by name [axis] Borrowings by name [member] Borrowings by name [member] Revolving credit facility: Revolving Credit Facility1 [Member] Revolving Credit Facility1 [Member] Fekola Equipment Loan Facility Fekola Equipment Loan Facility [Member] Fekola Equipment Loan Facility [Member] Masbate Equipment Loan Facility Masbate Equipment Loan Facility [Member] Masbate Equipment Loan Facility [Member] Otjikoto Equipment Loan Facility Otjikoto Equipment Loan Facility [Member] Otjikoto Equipment Loan Facility [Member] Lease liabilities Finance Lease Obligations [Member] Finance Lease Obligations [Member] Maturity [axis] Maturity [axis] Aggregated time bands [member] Aggregated time bands [member] 2020 Not later than one year [member] 2021 Later than one year and not later than two years [member] 2022 Later than two years and not later than three years [member] 2023 Later than three years and not later than four years [member] 2024 Later than four years and not later than five years [member] Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] [Line Items] for Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table] Accounts payable and accrued liabilities Trade and other current payables Derivative liabilities Derivative financial liabilities Principal Borrowings Interest (estimated) Estimated Interest Payable Estimated Interest Payable Debt repayments Financial liabilities Capital expenditure commitments Capital commitments Employee future benefits Provisions for employee benefits Other liabilities Other liabilities Long-Term Debt1 [Abstract] Long-Term Debt1 [Abstract] Depreciation of right-of-use assets Depreciation, right-of-use assets Payments of lease liabilities Cash outflow for leases Disclosure of maturity analysis of operating lease payments [table] Disclosure of maturity analysis of operating lease payments [table] Less than one year One to five years Later than one year and not later than five years [member] More than five years Later than five years [member] Disclosure of maturity analysis of operating lease payments [line items] Disclosure of maturity analysis of operating lease payments [line items] Lease liability Lease liabilities Expense relating to short-term leases Expense relating to short-term leases for which recognition exemption has been used Variable lease payments Expense relating to variable lease payments not included in measurement of lease liabilities Accounting Judgements And Estimates [Abstract] Accounting Judgements And Estimates [Abstract] Significant accounting judgements and estimates Disclosure of accounting judgements and estimates [text block] Continuing and discontinued operations [Abstract] Continuing and discontinued operations [Abstract] Disclosure of analysis of single amount of discontinued operations [table] Disclosure of analysis of single amount of discontinued operations [table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] [Domain] for Disposal Group Name [Axis] Nicaraguan Group Nicaraguan Group [Member] Nicaraguan Group [Member] Disclosure of analysis of single amount of discontinued operations [line items] Disclosure of analysis of single amount of discontinued operations [line items] Gold revenue Revenue, Discontinued Operations Revenue, Discontinued Operations Production costs Production Expense, Discontinued Operations Production Expense, Discontinued Operations Depreciation and depletion Cost of Sales, Depreciation and Amortisation Expense, Discontinued Operations Cost of Sales, Depreciation and Amortisation Expense, Discontinued Operations Royalties and production taxes Royalty Expense And Production Tax Expense, Discontinued Operations Royalty Expense And Production Tax Expense, Discontinued Operations Total cost of sales Cost of Sales, Discontinued Operations Cost of Sales, Discontinued Operations Gross profit (loss) Gross Profit, Discontinued Operations Gross Profit, Discontinued Operations General and administrative Selling, General And Administrative Expense, Discontinued Operations Selling, General And Administrative Expense, Discontinued Operations Share-based payments Expense From Share-based Payment Transactions In Which Goods Or Services Received Did Not Qualify For Recognition As Assets, Discontinued Operations Expense From Share-based Payment Transactions In Which Goods Or Services Received Did Not Qualify For Recognition As Assets, Discontinued Operations Impairment of long-lived assets, net Write-downs (Reversals Of Write-Downs) Of Property, Plant And Equipment, Discontinued Operations Write-downs (Reversals Of Write-Downs) Of Property, Plant And Equipment, Discontinued Operations Write-off of mineral property interests Impairment Loss Recognised In Profit Or Loss, Mineral Properties, Discontinued Operations Impairment Loss Recognised In Profit Or Loss, Mineral Properties, Discontinued Operations Provision for non-recoverable input taxes Tax Expense Other Than Income Tax Expense, Discontinued Operations Tax Expense Other Than Income Tax Expense, Discontinued Operations Community relations Community Relations Expense, Discontinued Operations Community Relations Expense, Discontinued Operations Foreign exchange losses Foreign Exchange Gain (Loss), Discontinued Operations Foreign Exchange Gain (Loss), Discontinued Operations Other Miscellaneous Other Operating Expense, Discontinued Operations Miscellaneous Other Operating Expense, Discontinued Operations Operating income (loss) Profit (Loss) From Operating Activities, Discontinued Operations Profit (Loss) From Operating Activities, Discontinued Operations Interest and financing expense Finance Costs, Discontinued Operations Finance Costs, Discontinued Operations Other Miscellaneous Other Non-operating Expense, Discontinued Operations Miscellaneous Other Non-operating Expense, Discontinued Operations Income (loss) before taxes Profit (Loss) Before Tax, Discontinued Operations Profit (Loss) Before Tax, Discontinued Operations Current income tax, withholding and other taxes expense Current Tax Expense (Income), Discontinued Operations Current Tax Expense (Income), Discontinued Operations Deferred income tax expense Deferred Tax Expense (Income) From Discontinued Operations Deferred Tax Expense (Income) From Discontinued Operations Net income (loss) from discontinued operations Profit (loss) from discontinued operations Analysis of income and expense [abstract] Salaries and short-term employee benefits Key management personnel compensation, short-term employee benefits Share-based payments Key management personnel compensation, share-based payment Key management personnel compensation Key management personnel compensation Disclosure of share capital, reserves and other equity interest [Abstract] Disclosure of share capital, reserves and other equity interest [Abstract] Number of outstanding options, beginning of year (in shares) Number of share options outstanding in share-based payment arrangement Number of options granted (in shares) Number of share options granted in share-based payment arrangement Number of options exercised (in shares) Number of share options exercised in share-based payment arrangement Number of options forfeited (in shares) Number of share options forfeited in share-based payment arrangement Number of outstanding options, ending of year (in shares) Weighted-average exercise price, beginning of year (in Cdn.$per share) Weighted average exercise price of share options outstanding in share-based payment arrangement Weighted average exercise price, options granted (in Cdn.$per share) Weighted average exercise price of share options granted in share-based payment arrangement Weighted average exercise price, options exercised (in Cdn.$ per share) Weighted average exercise price of share options exercised in share-based payment arrangement Weighted average exercise price, options forfeited (in Cdn.$per share) Weighted average exercise price of share options forfeited in share-based payment arrangement Weighted-average exercise price, end of year (in Cdn.$per share) Available-for-sale financial assets [abstract] Long Term Investment [Table] Long Term Investment [Table] Long Term Investment [Table] Retrospective application and retrospective restatement [axis] Retrospective application and retrospective restatement [axis] Currently stated [member] Currently stated [member] Increase (decrease) due to changes in accounting policy required by IFRSs Increase (decrease) due to changes in accounting policy required by IFRSs [member] Classes of financial instruments [axis] Classes of financial instruments [axis] Financial instruments, class [member] Financial instruments, class [member] Long Term Investments Long Term Investments [Member] Long Term Investments [Member] Initially applied IFRSs [axis] Initially applied IFRSs [axis] Initially applied IFRSs [member] Initially applied IFRSs [member] IFRS 9 In accordance with IFRS 9 [member] Long Term Investment [Line Items] Long Term Investment [Line Items] [Line Items] for Long Term Investment [Table] Accumulated other comprehensive loss Accumulated other comprehensive income Deferred income tax expense Deferred tax expense (income) Deficit Retained earnings Unrealized loss on investments Other comprehensive income, net of tax, gains (losses) from investments in equity instruments Disclosure of components of cost of sales Disclosure Of Components Of Cost Of Sales [Table Text Block] Disclosure Of Components Of Cost Of Sales [Table Text Block] Disclosure of terms and conditions of share-based payment arrangement [table] Disclosure of terms and conditions of share-based payment arrangement [table] Types of share-based payment arrangements [axis] Types of share-based payment arrangements [axis] Share-based payment arrangements [member] Share-based payment arrangements [member] Restricted Share Units Restricted Share Units (RSU) [Member] Restricted Share Units (RSU) [Member] Disclosure of terms and conditions of share-based payment arrangement [line items] Disclosure of terms and conditions of share-based payment arrangement [line items] Number of outstanding units, beginning of year Number of other equity instruments outstanding in share-based payment arrangement Number of units granted Number of other equity instruments granted in share-based payment arrangement Number of units vested and converted to common shares Number of other equity instruments exercised or vested in share-based payment arrangement Number of outstanding units, end of year Other Assets1 [Abstract] Other Assets1 [Abstract] Low-grade stockpile Non-current ore stockpiles Debt service reserve account (Note 12) Non-current restricted cash and cash equivalents Loan receivable, including accrued interest Noncurrent Loan And Interest Receivable Noncurrent Loan And Interest Receivable Reclamation deposits Reclamation Deposits Reclamation Deposits Other Miscellaneous Non-current Other Assets Miscellaneous Non-current Other Assets Other non-current assets Other non-current assets Disclosure of non-current assets held for sale and discontinued operations [Abstract] Disclosure of non-current assets held for sale and discontinued operations [Abstract] Subsidiaries [axis] Subsidiaries [axis] Subsidiaries Entity's total for subsidiaries [member] Calibre Mining Corp. Calibre Mining Corp. [Member] Calibre Mining Corp. [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Continuing and discontinued operations [axis] Continuing and discontinued operations [axis] Continuing operations Continuing operations [member] Discontinued operations Discontinued operations [member] Consideration received Consideration paid (received) Cash consideration received Portion of consideration paid (received) consisting of cash and cash equivalents Value of consideration received in shares Portion Of Consideration Paid (Received) Consisting Of Equity Shares, Value Portion Of Consideration Paid (Received) Consisting Of Equity Shares, Value Number of shares received (in shares) Portion Of Consideration Paid (Received) Consisting Of Equity Shares, Shares Portion Of Consideration Paid (Received) Consisting Of Equity Shares, Shares Shares received (in USD per share) Portion Of Consideration Paid (Received) Consisting Of Equity Shares, Per Share Value Portion Of Consideration Paid (Received) Consisting Of Equity Shares, Per Share Value Closing foreign exchange rate (in CAD) Closing foreign exchange rate Deferred consideration Portion Of Consideration Paid (Received) Consisting Of Deferred Consideration Portion Of Consideration Paid (Received) Consisting Of Deferred Consideration Deferred consideration term Portion Of Consideration Paid (Received) Consisting Of Deferred Consideration, Term Portion Of Consideration Paid (Received) Consisting Of Deferred Consideration, Term Cash consideration, one year from closing discounted at 9.75% Portion Of Consideration Paid (Received) Consisting Of Deferred Considaration, Discounted Value Portion Of Consideration Paid (Received) Consisting Of Deferred Considaration, Discounted Value Discount rate Discount rate used in current measurement of fair value less costs of disposal Convertible debenture Portion Of Consideration Paid (Received) Consisting Of Convertible Debenture Portion Of Consideration Paid (Received) Consisting Of Convertible Debenture Discounted working capital adjustment Portion Of Consideration Paid (Received) Consisting Of Working Capital Adjustment, Discounted Value Portion Of Consideration Paid (Received) Consisting Of Working Capital Adjustment, Discounted Value Measurement period Debt Instrument, Convertible Debt, Measurement Period Debt Instrument, Convertible Debt, Measurement Period Convertible debt interest rate Debt Instrument, Convertible Debt, Interest Rate Debt Instrument, Convertible Debt, Interest Rate Conversion price (in usd per share) Debt Instrument, Convertible, Conversion Rate Debt Instrument, Convertible, Conversion Rate Working capital settlement, receivable portion discounted at 9.75% Portion Of Consideration Paid (Received) Consisting Of Working Capital Adjustment Portion Of Consideration Paid (Received) Consisting Of Working Capital Adjustment Gain on sale of Nicaraguan Group Gains on disposals of property, plant and equipment Proportion of ownership interest in associate Proportion of ownership interest in associate Disclosure Of Significant Accounting Policies [Abstract] Disclosure Of Significant Accounting Policies [Abstract] Disclosure of fair value measurement of equity [table] Disclosure of fair value measurement of equity [table] Range [axis] Range [axis] Range [Domain] Ranges [member] Bottom of range Bottom of range [member] Top of range Top of range [member] IFRS 16 At cost or in accordance with IFRS 16 within fair value model [member] Disclosure of fair value measurement of equity [line items] Disclosure of fair value measurement of equity [line items] Right-of-use assets Right-of-use assets Adoption of IFRS 16 Remaining lease term Lease Liabilities, Remaining Term Lease Liabilities, Remaining Term Discounted borrowing rate Weighted average lessee's incremental borrowing rate applied to lease liabilities recognised at date of initial application of IFRS 16 Disclosure Of Commitments [Abstract] Disclosure Of Commitments [Abstract] Disclosure of detailed information about property, plant and equipment [table] Disclosure of detailed information about property, plant and equipment [table] Classes of property, plant and equipment [axis] Classes of property, plant and equipment [axis] Property, plant and equipment Property, plant and equipment [member] Mine Expansion Mine Expansion [Member] Mine Expansion [Member] Plant Expansion Plant Expansion [Member] Plant Expansion [Member] Solar Plant Solar Plant [Member] Solar Plant [Member] Capital Spares Capital Spares [Member] Capital Spares [Member] Other Projects Other Projects [Member] Other Projects [Member] Fleet Management System Fleet Management System [Member] Fleet Management System [Member] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Fekola Fekola Mine [Member] Fekola Mine [Member] Otjikoto Otjikoto Mine [Member] Otjikoto Mine [Member] Disclosure of detailed information about property, plant and equipment [line items] Disclosure of detailed information about property, plant and equipment [line items] Disclosure of debt instruments Disclosure of debt instruments [text block] Disclosure of Changes in Debt Balances Disclosure Of Changes In Debt Balances [Table Text Block] Disclosure Of Changes In Debt Balances [Table Text Block] Disclosure of maturity analysis of operating lease payments Disclosure of maturity analysis of operating lease payments [text block] Disclosure Of Long-Term Debt Maturities Disclosure Of Long-Term Debt Maturities [Table Text Block] Disclosure Of Long-Term Debt Maturities [Table Text Block] Other assets Disclosure of other assets [text block] Commitments Disclosure of commitments [text block] Recent accounting pronouncements Description of nature of change in accounting policy Principles of consolidation Disclosure of basis of consolidation [text block] Investments in joint arrangements Description of accounting policy for investments in joint ventures [text block] Business combinations Description of accounting policy for business combinations [text block] Goodwill Description of accounting policy for goodwill [text block] Foreign currency translation Description of accounting policy for foreign currency translation [text block] Financial instruments Description of accounting policy for financial instruments [text block] Impairment of financial assets Description of accounting policy for impairment of financial assets [text block] Inventories Description of accounting policy for measuring inventories [text block] Mining interests Description of accounting policy for property, plant and equipment [text block] Leases Description of accounting policy for leases [text block] Mine restoration provisions Description of accounting policy for decommissioning, restoration and rehabilitation provisions [text block] Share-based payments Description of accounting policy for share-based payment transactions [text block] Current and deferred income taxes Description of accounting policy for income tax [text block] Revenue Description of accounting policy for recognition of revenue [text block] Earnings per share Description of accounting policy for earnings per share [text block] Mineral reserve and resource estimates Description Of Accounting Policy For Ore Reserve And Resource Estimates [Policy Text Block] Description Of Accounting Policy For Ore Reserve And Resource Estimates [Policy Text Block] Impairment of long-lived assets Description of accounting policy for impairment of assets [text block] Value-added tax receivables Description of accounting policy for taxes other than income tax [text block] Uncertain tax positions Description Of Accounting Policy For Uncertain Tax Positions [Policy Text Block] Description Of Accounting Policy For Uncertain Tax Positions [Policy Text Block] Deferred income taxes and valuation allowances Description of accounting policy for deferred income tax [text block] Capitalization of exploration and evaluation expenditures Description of accounting policy for exploration and evaluation expenditures [text block] Production costs by nature Disclosure of cost of sales [text block] Statement of changes in equity [abstract] Non-controlling interests Disclosure of non-controlling interests [text block] Disclosure Of Provisions [Abstract] Disclosure Of Provisions [Abstract] Disclosure of other provisions [table] Disclosure of other provisions [table] Classes of other provisions [axis] Classes of other provisions [axis] Other provisions [member] Other provisions [member] Mine restoration provisions Provision for decommissioning, restoration and rehabilitation costs [member] Disclosure of other provisions [line items] Disclosure of other provisions [line items] Reconciliation of changes in other provisions [abstract] Reconciliation of changes in other provisions [abstract] Balance, beginning of year Other provisions Reclamation spending at continuing operations Provision used, other provisions Accretion expense Increase through adjustments arising from passage of time, other provisions Change in obligation Increase in existing provisions, other provisions Obligations sold with Nicaraguan Group (Note 6) Decrease through transfer to liabilities included in disposal groups classified as held for sale, other provisions Balance, end of year Current portion of mine restoration provisions Current provision for decommissioning, restoration and rehabilitation costs Non-current portion of mine restoration provisions Non-current provision for decommissioning, restoration and rehabilitation costs Exploration And Evaluation Of Mineral Resources [Abstract] Exploration And Evaluation Of Mineral Resources [Abstract] Fekola Mine, Mali Masbate Mine, Philippines Masbate Mine [Member] Masbate Mine [Member] Otjikoto Mine, Namibia Limon Mine, Nicaragua Limon Mine [Member] Limon Mine [Member] Libertad Mine, Nicaragua Libertad Mine [Member] Libertad Mine [Member] Kiaka, Burkina Faso Kiaka Project [Member] Kiaka Project [Member] Anaconda Regional, Mali Anaconda Regional, Mali [Member] Anaconda Regional, Mali [Member] Toega, Burkina Faso Toega, Burkina Faso [Member] Toega, Burkina Faso [Member] Mocoa Royalty, Colombia Mocoa Royalty Interest [Member] Mocoa Royalty Interest [Member] Ondundu, Namibia Ondundu, Nambibia [Member] Ondundu, Nambibia [Member] Finland Properties, Finland Finland Properties, Finland [Member] Finland Properties, Finland [Member] Other Other property, plant and equipment [member] Gramalote, Colombia, net of impairment Gramalote [Member] Gramalote [Member] Cost Cost, net of impairment Gross Carrying Amount, Net Of Impairment [Member] Gross Carrying Amount, Net Of Impairment [Member] Accumulated depreciation and depletion Accumulated depreciation and amortisation [member] Property, plant and equipment (depletable) Mining Property, Depletable [Member] Mining Property, Depletable [Member] Exploration and evaluation properties (non-depletable) Exploration and evaluation assets [member] Office, furniture and equipment, net Office equipment [member] Property, plant and equipment Property, plant and equipment Investments in joint ventures and associates (accounted for using the equity method) Investments in joint ventures accounted for using equity method Investments in associates accounted for using equity method Investments in associates accounted for using equity method Investments accounted for using equity method Investments accounted for using equity method Total property, plant and equipment and joint ventures accounted for using the equity method Total Property, Plant And Equipment And Investments Accounted For Using The Equity Method Total Property, Plant And Equipment And Investments Accounted For Using The Equity Method Disclosure of income tax [Abstract] Disclosure of income tax [Abstract] Deferred tax asset Deferred tax assets Deferred tax liability Deferred tax liabilities Total deferred tax liability (asset) Deferred tax liability (asset) Disclosure of entity's operating segments [Abstract] Disclosure of entity's operating segments [Abstract] Disclosure of operating segments [table] Disclosure of operating segments [table] Geographical areas [axis] Geographical areas [axis] Geographical areas [member] Geographical areas [member] Mali MALI Philippines PHILIPPINES Namibia NAMIBIA Burkina Faso BURKINA FASO Nicaragua NICARAGUA Colombia COLOMBIA Finland FINLAND Canada CANADA Total Other [Member] Other [Member] Disclosure of operating segments [line items] Disclosure of operating segments [line items] Mining interests Statement of cash flows [abstract] Accounts receivable and prepaids Adjustments For Decrease (Increase) In Receivables And Other Current Assets Adjustments For Decrease (Increase) In Receivables And Other Current Assets Value-added and other tax receivables Adjustments For Decrease (Increase) In Receivables From Taxes Other Thank Income Tax Current Adjustments For Decrease (Increase) In Receivables From Taxes Other Than Income Tax, Current Inventories Adjustments for decrease (increase) in inventories Accounts payable and accrued liabilities Adjustments for increase (decrease) in trade and other payables Current income and other taxes payable Adjustments For Increase (Decrease) In Current Tax Liabilities Current Adjustments For Increase (Decrease) In Current Tax Liabilities, Current Changes in non-cash working capital Increase (decrease) in working capital Long-term investments Disclosure of available-for-sale financial assets [text block] Derivative instrument [Axis] Derivative instrument [Axis] Derivative instrument [Axis] Derivative instrument [Domain] Derivative instrument [Domain] [Domain] for Derivative instrument [Axis] Fuel derivative contracts Fuel Oil, Gas Oil and Diesel Forward Contracts [Member] Fuel Oil, Gas Oil and Diesel Forward Contracts [Member] Valuation techniques used in fair value measurement [axis] Valuation techniques used in fair value measurement [axis] Valuation techniques [member] Valuation techniques [member] Nicaraguan Cordoba Versus United States Dollar Nicaraguan Cordoba Versus United States Dollar [Member] Nicaraguan Cordoba Versus United States Dollar [Member] Classes of financial liabilities [axis] Classes of financial liabilities [axis] Financial liabilities, class [member] Financial liabilities, class [member] Gold forward contracts (Note 14) Gold Foward Contracts [Member] Gold Foward Contracts [Member] Types of risks [axis] Types of risks [axis] Risks [member] Risks [member] Currency risk Currency risk [member] Commodity price risk Commodity price risk [member] Interest rate risk Interest rate risk [member] Cash and cash equivalents Cash and cash equivalents Cash flows from (used in) operating activities Cash flows from (used in) operating activities Line of credit facility, maximum borrowing capacity Line Of Credit Facility, Maximum Borrowing Capacity1 Line Of Credit Facility, Maximum Borrowing Capacity1 Borrowings outstanding Undrawn borrowing facilities Undrawn borrowing facilities Risk exposure associated with instruments sharing characteristic Risk exposure associated with instruments sharing characteristic Reasonably possible change in risk variable, percent Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Percent Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Percent Sensitivity analysis for types of market risk, reasonably possible change in risk variable, impact on cash and cash equivalents Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Impact On Cash And Cash Equivalents Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Impact On Cash And Cash Equivalents Sensitivity analysis for types of market risk, reasonably possible change in risk variable, impact on financial liabilities Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Impact On Financial Liabilities Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Impact On Financial Liabilities Summary of significant accounting policies Disclosure of significant accounting policies [text block] Statement of comprehensive income [abstract] Net income Profit (loss) Other comprehensive income (loss) Other comprehensive income [abstract] Impact of change in credit spread on convertible notes Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability Unrealized gain (loss) on investments (Note 9) Other comprehensive income (loss) Other comprehensive income Total comprehensive income Comprehensive income Other comprehensive income (loss) attributable to: Other Comprehensive Income Attributable To [Abstract] Other Comprehensive Income Attributable To [Abstract] Shareholders of the Company Other comprehensive income, attributable to owners of parent Non-controlling interests Other comprehensive income, attributable to non-controlling interests Total comprehensive income attributable to: Comprehensive income attributable to [abstract] Shareholders of the Company Comprehensive income, attributable to owners of parent Non-controlling interests Comprehensive income, attributable to non-controlling interests Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Emerging Growth Company Entity Emerging Growth Company Philippines Gold Processing & Refining Corporation (“Masbate”) Philippines Gold Processing & Refining Corporation [Member] Philippines Gold Processing & Refining Corporation [Member] Filminera Resources Corporation (Masbate) Filminera Resources Corporation [Member] Filminera Resources Corporation [Member] Mobile Equipment, Tailings Dam and Equipment Mobile Equipment, Tailings Dam And Equipment [Member] Mobile Equipment, Tailings Dam And Equipment [Member] Percentage of ownership interest in subsidiary Proportion of ownership interest in subsidiary Proportion of ownership interests held by non-controlling interests Proportion of ownership interests held by non-controlling interests Useful lives of property, plant and equipment Useful Lives Or Depreciation Rates, Property, Plant And Equipment, Period Useful Lives Or Depreciation Rates, Property, Plant And Equipment, Period Subclassifications of assets, liabilities and equities [abstract] Supplier advances Current advances to suppliers Due from associate (Note 6) Receivables due from associates Prepaid expenses Current prepaid expenses Other receivables Other receivables Accounts receivable, prepaids and other Receivables And Other Current Assets Receivables And Other Current Assets Disclosure of deferred income [Abstract] Disclosure of deferred income [Abstract] Prepaid Sales Disclosure of deferred income [text block] Disclosure Of Expense By Nature [Table] Disclosure Of Expense By Nature [Table] Disclosure Of Expense By Nature [Table] Income Statement Location [Axis] Income Statement Location1 [Axis] Income Statement Location1 [Axis] Income Statement Location [Domain] Income Statement Location1 [Domain] [Domain] for Income Statement Location1 [Axis] General And Administrative Costs General And Administrative Costs [Member] General And Administrative Costs [Member] Disclosure Of Expense By Nature [Line Items] Disclosure Of Expense By Nature [Line Items] [Line Items] for Disclosure Of Expense By Nature [Table] Raw materials and consumables Raw materials and consumables used Salaries and employee benefits Employee benefits expense Contractors Contractor Expense Contractor Expense Equipment rental Rental expense Other Other expenses, by nature Silver credits Revenue from sale of silver Change in inventories Write-downs (reversals of write-downs) of inventories Capitalized to mining interests Expense Capitalized To Mining Interest Expense Capitalized To Mining Interest Total Production Expense Production Expense Production Expense Disclosure of detailed information about property, plant and equipment [abstract] Investment Name [Axis] Investment, Name [Axis] Investment Name [Domain] Investment, Name [Domain] Investments Accounted For Using Equity Method Roll Forward [Roll Forward] Investments Accounted For Using Equity Method Roll Forward [Roll Forward] Investments Accounted For Using Equity Method Roll Forward [Roll Forward] Balance, beginning of year Transfers from long-term investments (Note 9) Investments In Associates Accounted For Using Equity Method, Transfers From (To) Long Term Investments Investments In Associates Accounted For Using Equity Method, Transfers From (To) Long Term Investments Shares issued in consideration for Nicaraguan Group (Note 6) Investment In Associates Accounted For Using Equity Method, Increase (Decrease) For Sale Of Property, Plant And Equipment Investment In Associates Accounted For Using Equity Method, Increase (Decrease) For Sale Of Property, Plant And Equipment Shares issued upon conversion of convertible debenture Investments In Associates Accounted For Using Equity Method, Increase (Decrease) For Conversion Of Debt Investments In Associates Accounted For Using Equity Method, Increase (Decrease) For Conversion Of Debt Share of net income of associate (Note 10) Share of profit (loss) of associates accounted for using equity method Balance, end of year Disclosure of fair value measurement of assets Disclosure of fair value measurement of assets [text block] Disclosure of fair value measurement of liabilities Disclosure of fair value measurement of liabilities [text block] Disclosure of liquidity risk Disclosure of liquidity risk [text block] Income Tax [Table] Income Tax [Table] Income Tax [Table] Other Income Tax [Line Items] Income Tax [Line Items] [Line Items] for Income Tax [Table] Income tax expense Tax expense (income) Disclosure of detailed information about borrowings [table] Disclosure of detailed information about borrowings [table] Disclosure of detailed information about borrowings [line items] Disclosure of detailed information about borrowings [line items] Interest Principal and interest payable Borrowings And Interest Payable Borrowings And Interest Payable Mine restoration provisions Disclosure of provisions [text block] Disclosure of detailed information about financial instruments [abstract] Disclosure of detailed information about financial instruments [table] Disclosure of detailed information about financial instruments [table] Types of financial assets [axis] Types of financial assets [axis] Financial assets, type [member] Financial assets, type [member] Forward contracts Forward contract [member] Collar Contracts Collar Contracts [Member] Collar Contracts [Member] Forward And Collar Contracts [Member] Forward And Collar Contracts [Member] Forward And Collar Contracts [Member] Hedging Designation [axis] Hedging Designation1 [Axis] Hedging Designation1 [Axis] Hedging Designation [Domain] Hedging Designation1 [Domain] [Domain] for Hedging Designation1 [Axis] Not Designated As Hedging Instrument Not Designated As Hedging Instrument [Member] Not Designated As Hedging Instrument [Member] Fuel Derivatives Fuel Derivatives [Member] Fuel Derivatives [Member] Forward – gas oil: Gas Oil Forward Contract [Member] Gas Oil Forward Contract [Member] Collars - fuel oil Fuel Oil Collar [Member] Fuel Oil Collar [Member] Collars - diesel Gas Oil Collar [Member] Gas Oil Collar [Member] Disclosure of detailed information about financial instruments [line items] Disclosure of detailed information about financial instruments [line items] Forward fuel contracts Derivative, Nonmonetary Notional Amount, Volume1 Derivative, Nonmonetary Notional Amount, Volume1 Unrealized gains (losses) on change in fair value measurement Gains (losses) recognised in profit or loss attributable to change in unrealised gains or losses for liabilities held at end of period, fair value measurement Gains on derivative instruments (Note 17) Gains (losses) on change in fair value of derivatives Financial assets, at fair value Financial assets, at fair value Schedule of Other Assets Schedule Of Other Assets1 [Table Text Block] Schedule Of Other Assets1 [Table Text Block] Accounts receivable, prepaids and other Disclosure of trade and other receivables [text block] Disclosure of financial assets [table] Disclosure of financial assets [table] RTG Mining Inc. RTG Mining Inc. [Member] RTG Mining Inc. [Member] St. Augustine Gold & Copper Ltd. St. Augustine Gold & Copper Ltd. [Member] St. Augustine Gold & Copper Ltd. [Member] Libero Copper Corp Libero Copper Corp [Member] Libero Copper Corp [Member] Goldstone Resources Ltd. Goldstone Resources Ltd. [Member] Goldstone Resources Ltd. [Member] Investments in Equity Instruments Designated At Fair Value Through Other Comprehensive Income Investments in equity instruments designated at fair value through other comprehensive income [member] Disclosure of financial assets [line items] Disclosure of financial assets [line items] Investments Non-current investments in equity instruments designated at fair value through other comprehensive income Accumulated other comprehensive loss Reclass / Impairment reversal Increase (Decrease) Through Other Changes, Transfers To (From) Equity Method Investments Increase (Decrease) Through Other Changes, Transfers To (From) Equity Method Investments Disclosure of operating segments Disclosure of operating segments [text block] Supplementary cash flow information Disclosure of cash flow statement [text block] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Temporary 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[Table Text Block] Schedule Of Gain On Sale Of Discontinued Operations [Table Text Block] Schedule Of Gain On Sale Of Discontinued Operations [Table Text Block] Schedule of Results from Discontinued Operations Schedule Of Results From Discontinued Operations [Table Text Block] Schedule Of Results From Discontinued Operations [Table Text Block] Disclosure of Major Components of Tax Expense (Income) Disclosure Of Major Components Of Tax Expense (Income) [Table Text Block] Disclosure Of Major Components Of Tax Expense (Income) [Table Text Block] Disclosure of Income Tax by Geographical Jurisdiction Disclosure Of Income Tax By Geographical Jurisdiction [Table Text Block] Disclosure Of Income Tax By Geographical Jurisdiction [Table Text Block] Disclosure of temporary difference, unused tax losses and unused tax credits Disclosure of temporary difference, unused tax losses and unused tax credits [text block] Disclosure of Unrecognized Temporary Difference, Unused Tax Losses and Unused Tax 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of exercise prices of outstanding share options [line items] Exercise price of outstanding options (in Cdn.$per share) Exercise price of outstanding share options Disclosure of number and weighted average remaining contractual life of outstanding share options [table] Disclosure of number and weighted average remaining contractual life of outstanding share options [table] Ranges of exercise prices for outstanding share options [axis] Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] Number of outstanding options (in shares) Weighted- average years to expiry (in years) Weighted average remaining contractual life of outstanding share options Weighted-average exercise price (in Cdn.$per share) Number of exercisable options (in shares) Number of share options exercisable in share-based payment arrangement 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(in USD per litre) Average Floor Price Of Derivative Instrument Average Floor Price Of Derivative Instrument Future minimum lease payments under operating leases at December 31, 2018 Undiscounted Operating Lease Payments Payable Undiscounted Operating Lease Payments Payable Initial recognition of contracts Additions To Lease Liabilities Additions To Lease Liabilities Commitments relating to short-term and low-value leases Expense relating to leases of low-value assets for which recognition exemption has been used Undiscounted lease payments at January 1, 2019 Effect of discounting at January 1, 2019 Discount On Operating Lease Payments Payable Discount On Operating Lease Payments Payable Lease liabilities arising on initial application of IFRS 16 Borrowing Installment [Axis] Borrowing Installment [Axis] Borrowing Installment [Axis] Borrowing Installment [Domain] Borrowing Installment [Domain] [Domain] for Borrowing Installment [Axis] Tranche 1 Tranche 1 [Member] Tranche 1 [Member] 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Reasonably Possible Change In Risk Variable, Impact On Property, Plant And Equipment, Net Of Tax Gain (loss) on sale of mineral properties Gains (losses) on disposals of property, plant and equipment Receivables from sale of properties Receivables from sale of properties Investments In associates (in shares) Investments In Associates Accounted For Using Equity Method, Shares Owned Investments In Associates Accounted For Using Equity Method, Shares Owned Number of shares received (in shares) Share price (in CAD per share) Share Price Share Price Quoted market value Entity Public Float Current assets Current assets Non-current assets Non-current assets Current liabilities Current liabilities Non-current liabilities Non-current liabilities Assets (liabilities) Assets (liabilities) Royalties and production taxes Depreciation and depletion Selling, general and administrative expense Miscellaneous other operating expense Tax expense (income) Assets classified as held for sale Current Assets Or Disposal Groups Classified As Held For Sale Current Assets Or Disposal Groups Classified As Held For Sale Contractual capital commitments Contractual capital commitments Proportion of ownership interest in joint operation Proportion of ownership interest in joint operation Unamortized Transaction Costs Unamortized Transaction Costs [Member] Unamortized Transaction Costs [Member] Otjikoto equipment loan facility (net of unamortized transaction costs) Lease liabilities Lease liabilities [member] Nicaraguan equipment loans Nicaraguan Equipment Loans [Member] Nicaraguan Equipment Loans [Member] Equipment loans/finance lease obligations: Equipment Loans And Lease Liabilities [Member] Equipment Loans And Lease Liabilities [Member] Principal Current portion of long-term debt Current borrowings and current portion of non-current borrowings Long-term debt Non-current portion of non-current borrowings Mining Interest Schedule Disclosure of property, plant and equipment [text block] Derivative 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debt (Note 12) Current portion of prepaid sales (Note 15) Deferred income classified as current Current portion of mine restoration provisions (Note 13) Other current liabilities Other current liabilities Total current liabilities Long-term debt (Note 12) Mine restoration provisions (Note 13) Deferred income taxes (Note 19) Employee benefits obligation Non-current provisions for employee benefits Other long-term liabilities Other non-current liabilities Total liabilities Liabilities Equity Equity [abstract] Shareholders’ equity Shareholders' Equity [Abstract] Shareholders' Equity [Abstract] Share capital issued: 1,030,399,987 common shares (Dec 31, 2018 – 994,621,917) Issued capital Contributed surplus Additional paid-in capital Equity attributable to owners of parent Equity attributable to owners of parent Non-controlling interests (Note 16) Non-controlling interests Total equity Total equity and liabilities Equity and liabilities Commitments (Note 24) Commitments And Contingencies1 Commitments And Contingencies1 Beginning balance deferred tax liability (asset) Deferred income tax expense included with the results from discontinued operations Deferred tax payable included in the sale of the Nicaraguan Group Reduction In Deferred Taxes Payable For Sale Of Discontinued Operations Reduction In Deferred Taxes Payable For Sale Of Discontinued Operations Net change in deferred taxes Net Change In Deferred Taxes Net Change In Deferred Taxes Ending balance deferred tax liability (asset) Long-term debt Disclosure of borrowing costs [text block] Inventory [Table] Inventory [Table] Inventory [Table] Inventory1 [Line Items] Inventory1 [Line Items] [Line Items] for Inventory [Table] Gold and silver bullion Current finished goods In-process inventory Current work in progress Ore stock-pile inventory Current ore stockpiles Materials and supplies Current raw materials and current production supplies Total Inventories Disclosure of employee benefits Disclosure Of Detailed Information About Key Management Personnel [Table Text Block] Disclosure Of Detailed Information About Key Management Personnel [Table Text Block] Equipment loans Fekola, Masbate and Otjikoto Equipment Loans [Member] Fekola, Masbate and Otjikoto Equipment Loans [Member] Changes In Borrowings [Roll Forward] Changes In Borrowings [Roll Forward] Changes In Borrowings [Roll Forward] Beginning balance Drawdowns Proceeds From Borrowings Net Of Transaction Costs, Classified as Financing Activities Proceeds From Borrowings Net Of Transaction Costs, Classified as Financing Activities Lease liabilities incurred Increase (Decrease) In Lease Liabilities Increase (Decrease) In Lease Liabilities Debt repayments Repayments Of Line Of Credit And Other Borrowings Classified As Financing Activities Repayments Of Line Of Credit And Other Borrowings Classified As Financing Activities Foreign exchange (gains) losses Increase (decrease) through foreign exchange, financial assets Deferred transaction costs incurred Deferred Borrowing Costs Deferred Borrowing Costs Non-cash interest and financing expense Borrowing costs recognised as expense Debt sold with Nicaraguan Group Increase (Decrease) In Borrowings Due To Sale Of Discontinued Operations Increase (Decrease) In Borrowings Due To Sale Of Discontinued Operations Ending balance Gold Forward Contracts Gold Forward Contracts [Member] Gold Forward Contracts [Member] Unrealized gains on change in fair value of derivatives Losses on change in fair value of derivatives Net income from continuing operations Non-controlling interests Net income from continuing operations (attributable to shareholders of the Company) Profit (loss) from continuing operations attributable to ordinary equity holders of parent entity Dilutive impact of gain on fair value of convertible notes Adjustment To Profit (Loss) For Gain On Fair Value Of Convertible Notes Adjustment To Profit (Loss) For Gain On Fair Value Of Convertible Notes Diluted net income from continuing operations (attributable to shareholders of the Company) Profit (loss) from continuing operations attributable to ordinary equity holders of parent entity including dilutive effects Net income (attributable to shareholders of the Company) Diluted net income (attributable to shareholders of the Company) Profit (loss), attributable to ordinary equity holders of parent entity including dilutive effects Basic weighted average number of shares outstanding (in shares) Effect of dilutive convertible notes (in shares) Dilutive effect of convertible instruments on number of ordinary shares Effect of dilutive securities, stock options (in shares) Dilutive effect of share options on number of ordinary shares Effect of dilutive securities, restricted share units (in shares) Dilutive Effect Of Restricted Stock Units On Number Of Ordinary Shares Dilutive Effect Of Restricted Stock Units On Number Of Ordinary Shares Diluted weighted average number of shares outstanding (in shares) Earnings per share from continuing operations, basic (in USD per share) Earnings per share from continuing operations, diluted (in USD per share) Earnings per share (attributable to Shareholders of the Company), Basic (in USD per share) Earnings per share (attributable to Shareholders of the Company), Diluted (in USD per share) Recent accounting pronouncements Disclosure of expected impact of initial application of new standards or interpretations [text block] Cash consideration, received upon closing Common shares of Calibre, issued upon closing Transaction costs Discontinued Operations, Transaction Costs On Sale Discontinued Operations, Transaction Costs On Sale Total proceeds from sale, net of transaction costs Total assets sold Disposal Group, Including Discontinued Operations, Assets Disposal Group, Including Discontinued Operations, Assets Total liabilities sold Disposal Group, Including Discontinued Operations, Liabilities Disposal Group, Including Discontinued Operations, Liabilities Net assets sold Disposal Group, Including Discontinued Opeartions, Assets (Liabilities), Net Disposal Group, Including Discontinued Opeartions, Assets (Liabilities), Net Reconciliation of accounting profit multiplied by applicable tax rates [abstract] Reconciliation of accounting profit multiplied by applicable tax rates [abstract] Income from continuing operations before taxes Canadian federal and provincial income tax rates Applicable tax rate Income tax expense at statutory rates Tax expense (income) at applicable tax rate Effects of different foreign statutory tax rates and tax holidays Tax effect of foreign tax rates Non-deductible expenditures Tax effect of expense not deductible in determining taxable profit (tax loss) Losses for which no tax benefit has been recorded Tax Effect Of Losses For Which No Tax Benefit Is Recorded Tax Effect Of Losses For Which No Tax Benefit Is Recorded Benefit of tax incentives Tax Effect Of Optional Deductions Tax Effect Of Optional Deductions Withholding tax Tax Effect Of Withholding Tax Tax Effect Of Withholding Tax Change due to foreign exchange Tax Effect Of Foreign Exchange Rates Tax Effect Of Foreign Exchange Rates Amounts (over) under provided for in prior years Adjustments for current tax of prior periods Income tax expense Current tax expense (income) and adjustments for current tax of prior periods Current tax expense (income) and adjustments for current tax of prior periods Changes in equity [abstract] Changes in equity [abstract] Operating loss carry-forwards Unused tax losses [member] Current assets and liabilities Derivatives Derivatives Related Temporary Differences [Member] Derivatives Related Temporary Differences [Member] Mining interests Property, Plant And Equipment Related Temporary Differences [Member] Property, Plant And Equipment Related Temporary Differences [Member] Unrealized gains Unrealized Gains Related Temporary Differences [Member] Unrealized Gains Related Temporary Differences [Member] Other Other temporary differences [member] Deferred tax (liabilities)/assets Deferred income tax expense/(recovery) Disclosure of subsidiaries [table] Disclosure of subsidiaries [table] Disclosure of subsidiaries [line items] Disclosure of subsidiaries [line items] Disclosure Of Supplementary Cash Flow Information Disclosure Of Supplementary Cash Flow Information [Table Text Block] Disclosure Of Supplementary Cash Flow Information [Table Text Block] Disclosure of significant unobservable inputs used in fair value measurement of assets Disclosure of significant unobservable inputs used in fair value measurement of assets [text block] Disclosure of investments accounted for using equity method [text block] Disclosure of investments accounted for using equity method [text block] Nature of operations Disclosure of general information about financial statements [text block] Inventories Disclosure of inventories [text block] Income and other taxes Disclosure of income tax [text block] Disclosure of classes of share capital [table] Disclosure of classes of share capital [table] Major ordinary share transactions Major ordinary share transactions [member] Ordinary shares Ordinary shares [member] Preference shares Preference shares [member] Vesting1 [Axis] Vesting1 [Axis] Vesting1 [Axis] Vesting1 [Domain] Vesting1 [Domain] [Domain] for Vesting1 [Axis] Vesting 1 year from grant Vesting 2 years from grant Vesting 3 years from grant Stock Options Exercised And Shares Issued [Member] Stock Options Exercised And Shares Issued [Member] Stock Options Exercised And Shares Issued [Member] Incentive Plan Incentive Plan [Member] Incentive Plan [Member] Stock Options Stock Options [Member] Stock Options [Member] Deferred Share Unit Deferred Share Unit [Member] Deferred Share Unit [Member] Performance Share Units Performance Share Units [Member] Performance Share Units [Member] Disclosure of classes of share capital [line items] Disclosure of classes of share capital [line items] Number of shares outstanding (in shares) Number of shares held in trust under the Company's Incentive Plan (in shares) Number of shares in entity held by entity or by its subsidiaries or associates Dividends paid (in USD per share) Dividends paid, ordinary shares per share Dividends paid Dividends paid, ordinary shares Shares issued on exercise of stock options Number of options exercised (in shares) Cash proceeds from exercise of options Proceeds from exercise of options Proceeds from exercise of options pending issuance in prior year Proceeds From Exercise Of Options Pending Issuance In Prior Year Proceeds From Exercise Of Options Pending Issuance In Prior Year Exercise price, share options granted (in Cdn.$per share) Exercise price, share options granted Term of options granted (in years) Share-based Compensation Arrangement By Share-based Payment Award Expiration Period1 Share-based Compensation Arrangement By Share-based Payment Award, Expiration Period1 Award vesting period (in years) Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Period2 Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Period2 Fair value of shares from share-based payment transactions Fair Value Of Shares From Share-Based Payment Transactions Fair Value Of Shares From Share-Based Payment Transactions Risk free annual interest rate Risk free interest rate, share options granted Expected option life (in years) Option life, share options granted Expected volatility Expected volatility, share options granted Dividend yield rate Expected dividend as percentage, share options granted Share-based payments expense Expense from share-based payment transactions with employees Share-based payments expense, capitalized to mining interests Expense From Share-Based Payment Transactions With Employees, Capitalized To Mining Interests Expense From Share-Based Payment Transactions With Employees, Capitalized To Mining Interests Weighted average exercise price, options exercised (in Cdn.$per share) Weighted average share price for share options in share-based payment arrangement exercised during period at date of exercise Number of units granted (in shares) Award vesting percent Share-based Compensation By Share-based Payment Award, Other Equity Instruments Portion Vesting, Percent Share-based Compensation By Share-based Payment Award, Other Equity Instruments Portion Vesting, Percent Measurement period Share Capital, Share Based Compensation, Measurement Period Share Capital, Share Based Compensation, Measurement Period Shares receivable as percent of other equity instruments granted Number Of Shares Receivable In Share-based Payment Arrangement As Percent Of Other Equity Instruments Granted Number Of Shares Receivable In Share-based Payment Arrangement As Percent Of Other Equity Instruments Granted Operating activities Cash flows from (used in) operating activities [abstract] Mine restoration provisions settled (Note 13) Increase (decrease) in other provisions Non-cash charges, net (Note 20) Changes in non-cash working capital (Note 20) Changes in long-term value added tax receivables Adjustments For Decrease (Increase) In Receivables From Taxes Other Than Income Tax Noncurrent Adjustments For Decrease (Increase) In Receivables From Taxes Other Than Income Tax, Noncurrent Cash provided by operating activities of continuing operations Cash flows from (used in) operating activities, continuing operations Cash provided by operating activities of discontinued operations Cash flows from (used in) operating activities, discontinued operations Cash provided by operating activities Financing activities Cash flows from (used in) financing activities [abstract] Revolving credit facility, drawdowns net of transaction costs (Note 12) Proceeds From Lines Of Credit1 Proceeds From Lines Of Credit1 Repayment of revolving credit facility (Note 12) Repayments Of Lines Of Credit1 Repayments Of Lines Of Credit1 Equipment loan facilities, drawdowns net of transaction costs (Note 12) Repayment of equipment loan facilities (Note 12) Repayments of borrowings, classified as financing activities Repayment of convertible notes (Note 12) Repayments Of Convertible Debt1 Repayments Of Convertible Debt1 Common shares issued for cash on exercise of stock options (Note 14) Dividends paid (Note 14) Dividends paid, classified as financing activities Interest and commitment fees paid Interest And Commitment Fees Paid, Classified As Financing Activities Interest And Commitment Fees Paid, Classified As Financing Activities Principal payments on lease arrangements Payments of lease liabilities, classified as financing activities Restricted cash movement Cash flows from (used in) decrease (increase) in restricted cash and cash equivalents Other Other inflows (outflows) of cash, classified as financing activities Cash used by financing activities of continuing operations Cash flows from (used in) financing activities, continuing operations Cash used by financing activities of discontinued operations Cash flows from (used in) financing activities, discontinued operations Cash used by financing activities Cash flows from (used in) financing activities Investing activities Cash flows from (used in) investing activities [abstract] Expenditures on mining interests, development and sustaining capital Purchase of property, plant and equipment, classified as investing activities Expenditures on mining interests, prefeasibility and exploration and development Cash proceeds from sale of Nicaraguan Group, net of transaction costs (Note 6) Proceeds from disposal of mining assets Other Other inflows (outflows) of cash, classified as investing activities Cash used by investing activities of continuing operations Cash flows from (used in) investing activities, continuing operations Cash used by investing activities of discontinued operations Cash flows from (used in) investing activities, discontinued operations Cash used by investing activities Cash flows from (used in) investing activities Increase (decrease) in cash and cash equivalents Increase (decrease) in cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents Cash and cash equivalents, beginning of year Cash and cash equivalents, end of year Loan receivable received on sale of Nicaraguan group (Note 6) Non-cash Financing Of Sale Of Property, Plant and Equipment Non-cash Financing Of Sale Of Property, Plant and Equipment Share consideration received on conversion of Calibre debenture (Note 6) Change in current liabilities relating to mineral property expenditures Capital Expenditures Incurred But Not Yet Paid1 Capital Expenditures Incurred But Not Yet Paid1 Share-based payments, capitalized to mineral property interests Share-based Payments Capitalized Share-based Payments Capitalized Non-controlling interest sold in exchange for loan receivable (Note 10) Noncash Transaction, Non-controlling Interest Sold In Exchange For Loan Receivable Noncash Transaction, Non-controlling Interest Sold In Exchange For Loan Receivable Details of derivative instruments Disclosure of detailed information about hedging instruments [text block]