Sierra Metals Inc. (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 001 - Document - Document And Entity Information Network

*

*

 http://www.sierrametals.com/role/DocumentAndEntityInformation
2 Implied Table Table

*

*

 implied:Table
3 Document And Entity Information [Abstract] Abstract smt:DocumentAndEntityInformationAbstract
4 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
5 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
6 Trading Symbol Concept (Text/String) For Period dei:TradingSymbol
7 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
8 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
9 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
10 Document Type Concept (Submission Type) For Period dei:DocumentType
11 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
12 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
13 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
14 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
15 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
16 Entity Ex Transition Period Concept (Yes/No) For Period dei:EntityExTransitionPeriod
17 002 - Statement - Consolidated Statements of Financial Position Network

*

*

 http://www.sierrametals.com/role/ConsolidatedStatementsOfFinancialPosition
18 Implied Table Table

*

*

 implied:Table
19 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
20 ASSETS Abstract ifrs-full:AssetsAbstract
21 Current assets: Abstract ifrs-full:CurrentAssetsAbstract
22 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
23 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
24 Income tax receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssetsCurrent
25 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
26 Inventories Concept (Monetary) As Of Debit ifrs-full:InventoriesTotal
27 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
28 Non-current assets: Abstract ifrs-full:NoncurrentAssetsAbstract
29 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
30 Deferred income tax Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
31 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
32 LIABILITIES Abstract ifrs-full:LiabilitiesAbstract
33 Current liabilities: Abstract ifrs-full:CurrentLiabilitiesAbstract
34 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
35 Income tax payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
36 Loans payable Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
37 Decommissioning liability Concept (Monetary) As Of Credit ifrs-full:ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts
38 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
39 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
40 Non-current liabilities: Abstract ifrs-full:NoncurrentLiabilitiesAbstract
41 Loans payable Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
42 Deferred income tax Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
43 Decommissioning liability Concept (Monetary) As Of Credit ifrs-full:LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts
44 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
45 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
46 EQUITY Abstract ifrs-full:EquityAbstract
47 Share capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
48 Accumulated deficit Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
49 Other reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
50 Equity attributable to owners of the Company Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
51 Non-controlling interest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
52 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
53 Total liabilities and equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
54 003 - Statement - Consolidated Statements of Income (Loss) Network

*

*

 http://www.sierrametals.com/role/ConsolidatedStatementsOfIncomeLoss
55 Implied Table Table

*

*

 implied:Table
56 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
57 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
58 Cost of sales Abstract smt:CostOfSalesAbstract
59 Mining costs Concept (Monetary) For Period Debit smt:MiningProductionCostOfSales
60 Depletion, depreciation and amortization Concept (Monetary) For Period Debit smt:DepreciationDepletionAndAmortizationExpense
61 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
62 Gross profit from mining operations Concept (Monetary) For Period Credit ifrs-full:GrossProfit
63 General and administrative expenses Concept (Monetary) For Period Debit ifrs-full:GeneralAndAdministrativeExpense
64 Selling expenses Concept (Monetary) For Period Debit ifrs-full:SellingExpense
65 Income from operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
66 Other income (loss) Concept (Monetary) For Period Credit ifrs-full:OtherIncome
67 Foreign currency exchange loss Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
68 Interest expense and other finance costs Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnOtherFinancialLiabilities
69 Loss on spin out of Plexmar net assets Concept (Monetary) For Period Debit smt:LossOnSpinOutOfNetAssets
70 Income before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
71 Income taxes (expense) recovery: Abstract ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
72 Current tax expense Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
73 Deferred tax recovery (expense) Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
74 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
75 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
76 Net income (loss) attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
77 Shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
78 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
79 Total income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
80 Weighted average shares outstanding (000s) Abstract ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
81 Basic (in shares) Concept (Shares) For Period ifrs-full:WeightedAverageShares
82 Diluted (in shares) Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
83 Basic earnings (loss) per share Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
84 Diluted earnings (loss) per share Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
85 004 - Statement - Consolidated Statements of Comprehensive Income (Loss) Network

*

*

 http://www.sierrametals.com/role/ConsolidatedStatementsOfComprehensiveIncomeLoss
86 Implied Table Table

*

*

 implied:Table
87 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
88 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
89 Other comprehensive income (loss) Abstract ifrs-full:OtherComprehensiveIncomeAbstract
90 Other comprehensive income (loss) Items that may be subsequently classified to net income (loss): Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
91 Currency translation adjustments on foreign operations Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnChangeInValueOfForeignCurrencyBasisSpreadsNetOfTax
92 Total comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
93 Total comprehensive income (loss) attributable to shareholders Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
94 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
95 Total comprehensive income (loss) attributable to shareholders Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
96 005 - Statement - Consolidated Statements of Changes in Equity Network

*

*

 http://www.sierrametals.com/role/ConsolidatedStatementsOfChangesInEquity
97 Statement of changes in equity [table] Table

*

*

 ifrs-full:StatementOfChangesInEquityTable
98 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
99 Equity [member] Member ifrs-full:EquityMember
100 Common Shares Member ifrs-full:IssuedCapitalMember
101 Other reserves Member ifrs-full:OtherReservesMember
102 Retained earnings (accumulated deficit) Member ifrs-full:RetainedEarningsMember
103 Total attributable to shareholders Member ifrs-full:EquityAttributableToOwnersOfParentMember
104 Non-controlling Interest Member ifrs-full:NoncontrollingInterestsMember
105 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
106 Balance Concept (Monetary) As Of Credit ifrs-full:Equity
107 Balance (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
108 Exercise of RSUs Concept (Monetary) For Period Credit smt:IncreaseDecreaseThroughExerciseOfStockUnitsEquityValue
109 Exercise of RSUs (in shares) Concept (Shares) For Period smt:IncreaseDecreaseThroughExerciseOfStockUnitsEquityShares
110 Share-based compensation expense Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
111 Non-cash dividend distribution of Plexmar net assets Concept (Monetary) For Period Debit smt:NonCashDividendDistributionToRetainedEarnings
112 Dividends paid to non-controlling interest Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
113 Total comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
114 Balance Concept (Monetary) As Of Credit ifrs-full:Equity
115 Balance (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
116 006 - Statement - Consolidated Statements of Cash Flows Network

*

*

 http://www.sierrametals.com/role/ConsolidatedStatementsOfCashFlows
117 Implied Table Table

*

*

 implied:Table
118 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
119 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
120 Net income (loss) from operations Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
121 Adjustments for: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
122 Items not affecting cash: Abstract smt:ItemsNotAffectingCashAbstract
123 Depletion, depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
124 Share-based compensation Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
125 Change in supplies inventory reserve Concept (Monetary) For Period Debit smt:ChangeInSuppliesInventoryReserve
126 Interest expense and other finance costs Concept (Monetary) For Period Debit smt:InterestExpenseAndOtherFinanceCost
127 Loss on spin out of Plexmar net assets Concept (Monetary) For Period Debit smt:LossOnSpinOutOfPlexmarNetAssets
128 NRV adjustment to inventory Concept (Monetary) For Period Debit ifrs-full:WritedownsReversalsOfInventories
129 Current income tax expense Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
130 Deferred income taxes recovery Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
131 Unrealized foreign currency exchange gain (loss) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
132 Operating cash flows before movements in working capital Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital
133 Net changes in non-cash working capital items Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
134 Decomissioning liabilities settled Concept (Monetary) For Period Debit smt:AdjustmentForDecomissioningLiabilitiesSettledClassifiedFromOperatingActivity
135 Income tax paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
136 Cash generated from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
137 Cash used in investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
138 Capital expenditures Concept (Monetary) For Period Credit ifrs-full:PaymentsForDevelopmentProjectExpenditure
139 Cash used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
140 Cash (used in) financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
141 Proceeds from issuance of notes payable Concept (Monetary) For Period Debit smt:ProceedsFromIssuanceOfNotesPayable
142 Proceeds from issuance of loans and credit facilities Concept (Monetary) For Period Debit smt:ProceedsFromIssuanceOfLoansAndCreditFacilitiesClassifiedFromFinancingActivity
143 Repayment of loans and credit facilities Concept (Monetary) For Period Credit smt:RepaymentOfLoansAndCreditFacilitiesClassifiedFromFinancingActivity
144 Loans interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsFinancingActivities
145 Dividends paid to non-controlling interest Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
146 Cash (used in) financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
147 Effect of foreign exchange rate changes on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
148 Decrease in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
149 Cash and cash equivalents, beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
150 Cash and cash equivalents, end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
151 007 - Disclosure - Description of business and nature of operations Network

*

*

 http://www.sierrametals.com/role/DescriptionOfBusinessAndNatureOfOperations
152 Implied Table Table

*

*

 implied:Table
153 Description Of Business And Nature Of Operations Disclosure [Abstract] Abstract smt:DescriptionOfBusinessAndNatureOfOperationsDisclosureAbstract
154 Description of business and nature of operations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNotesAndOtherExplanatoryInformationExplanatory
155 008 - Disclosure - Significant accounting policies Network

*

*

 http://www.sierrametals.com/role/SignificantAccountingPolicies
156 Implied Table Table

*

*

 implied:Table
157 Disclosure Of Significant Accounting Policies [Abstract] Abstract smt:DisclosureOfSignificantAccountingPoliciesAbstract
158 Significant accounting policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
159 009 - Disclosure - Significant accounting estimates and judgments Network

*

*

 http://www.sierrametals.com/role/SignificantAccountingEstimatesAndJudgments
160 Implied Table Table

*

*

 implied:Table
161 Disclosure of changes in accounting estimates [abstract] Abstract ifrs-full:DisclosureOfChangesInAccountingEstimatesAbstract
162 Significant accounting estimates and judgments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
163 010 - Disclosure - Adoption of new accounting standards and future accounting changes Network

*

*

 http://www.sierrametals.com/role/AdoptionOfNewAccountingStandardsAndFutureAccountingChanges
164 Implied Table Table

*

*

 implied:Table
165 Disclosure of expected impact of initial application of new standards or interpretations [abstract] Abstract ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsAbstract
166 Adoption of new accounting standards and future accounting changes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFirstTimeAdoptionExplanatory
167 011 - Disclosure - Trade and other receivables Network

*

*

 http://www.sierrametals.com/role/TradeAndOtherReceivables
168 Implied Table Table

*

*

 implied:Table
169 Trade and other receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
170 Trade and other receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
171 012 - Disclosure - Inventories Network

*

*

 http://www.sierrametals.com/role/Inventories
172 Implied Table Table

*

*

 implied:Table
173 Inventories [Abstract] Abstract smt:InventoriesAbstract
174 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
175 013 - Disclosure - Property, plant and equipment Network

*

*

 http://www.sierrametals.com/role/PropertyPlantAndEquipment
176 Implied Table Table

*

*

 implied:Table
177 Disclosure of detailed information about property, plant and equipment [abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
178 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
179 014 - Disclosure - Accounts payable and accrued liabilities Network

*

*

 http://www.sierrametals.com/role/AccountsPayableAndAccruedLiabilities
180 Implied Table Table

*

*

 implied:Table
181 Trade and other current payables [abstract] Abstract ifrs-full:TradeAndOtherCurrentPayablesAbstract
182 Accounts payable and accrued liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
183 015 - Disclosure - Current and deferred income tax liability Network

*

*

 http://www.sierrametals.com/role/CurrentAndDeferredIncomeTaxLiability
184 Implied Table Table

*

*

 implied:Table
185 Current And Deferred Income Tax Liability [Abstract] Abstract smt:CurrentAndDeferredIncomeTaxLiabilityAbstract
186 Current and deferred income tax liability Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
187 016 - Disclosure - Loans payable Network

*

*

 http://www.sierrametals.com/role/LoansPayable
188 Implied Table Table

*

*

 implied:Table
189 Disclosure of detailed information about borrowings [abstract] Abstract ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsAbstract
190 Loans payable Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
191 017 - Disclosure - Decommissioning liability Network

*

*

 http://www.sierrametals.com/role/DecommissioningLiability
192 Implied Table Table

*

*

 implied:Table
193 Disclosure of other provisions [abstract] Abstract ifrs-full:DisclosureOfOtherProvisionsAbstract
194 Decommissioning liability Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionsExplanatory
195 018 - Disclosure - Other liabilities Network

*

*

 http://www.sierrametals.com/role/OtherLiabilities
196 Implied Table Table

*

*

 implied:Table
197 Disclosure Of Other Liabilities Abstract Abstract smt:DisclosureOfOtherLiabilitiesAbstract
198 Other liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherLiabilitiesExplanatory
199 019 - Disclosure - Share capital and share-based payments Network

*

*

 http://www.sierrametals.com/role/ShareCapitalAndShareBasedPayments
200 Implied Table Table

*

*

 implied:Table
201 Disclosure of terms and conditions of share-based payment arrangement [abstract] Abstract ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract
202 Share capital and share-based payments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
203 020 - Disclosure - Non-controlling interest Network

*

*

 http://www.sierrametals.com/role/NonControllingInterest
204 Implied Table Table

*

*

 implied:Table
205 Disclosure Of Non Controlling Interest [Abstract] Abstract smt:DisclosureOfNonControllingInterestAbstract
206 Non-controlling interest Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory
207 021 - Disclosure - Expenses by nature Network

*

*

 http://www.sierrametals.com/role/ExpensesByNature
208 Implied Table Table

*

*

 implied:Table
209 Expenses by nature [abstract] Abstract ifrs-full:ExpenseByNatureAbstract
210 Expenses by nature Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfExpensesByNatureExplanatory
211 022 - Disclosure - Other income (expenses) Network

*

*

 http://www.sierrametals.com/role/OtherIncomeExpenses
212 Implied Table Table

*

*

 implied:Table
213 Disclosure Of Other Income Expenses [Abstract] Abstract smt:DisclosureOfOtherIncomeExpensesAbstract
214 Other income (expenses) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory
215 023 - Disclosure - Interest expense and other finance costs Network

*

*

 http://www.sierrametals.com/role/InterestExpenseAndOtherFinanceCosts
216 Implied Table Table

*

*

 implied:Table
217 Disclosure Of Interest Expense And Other Finance Costs [Abstract] Abstract smt:DisclosureOfInterestExpenseAndOtherFinanceCostsAbstract
218 Interest expense and other finance costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestExpenseExplanatory
219 024 - Disclosure - Segment reporting Network

*

*

 http://www.sierrametals.com/role/SegmentReporting
220 Implied Table Table

*

*

 implied:Table
221 Disclosure of operating segments [abstract] Abstract ifrs-full:DisclosureOfOperatingSegmentsAbstract
222 Segment reporting Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
223 025 - Disclosure - Financial instruments and financial risk management Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagement
224 Implied Table Table

*

*

 implied:Table
225 Financial Instruments And Financial Risk Management [Abstract] Abstract smt:FinancialInstrumentsAndFinancialRiskManagementAbstract
226 Financial instruments and financial risk management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialInstrumentsExplanatory
227 026 - Disclosure - Capital management Network

*

*

 http://www.sierrametals.com/role/CapitalManagement
228 Implied Table Table

*

*

 implied:Table
229 Disclosure of objectives, policies and processes for managing capital [abstract] Abstract ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalAbstract
230 Capital management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory
231 027 - Disclosure - Related party transactions Network

*

*

 http://www.sierrametals.com/role/RelatedPartyTransactions
232 Implied Table Table

*

*

 implied:Table
233 Related party transactions [abstract] Abstract ifrs-full:RelatedPartyTransactionsAbstract
234 Related party transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
235 028 - Disclosure - Supplemental cash flow information Network

*

*

 http://www.sierrametals.com/role/SupplementalCashFlowInformation
236 Implied Table Table

*

*

 implied:Table
237 Disclosure Of Supplemental Cash Flow Information [Abstract] Abstract smt:DisclosureOfSupplementalCashFlowInformationAbstract
238 Supplemental cash flow information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashFlowStatementExplanatory
239 029 - Disclosure - Revenues from mining operations Network

*

*

 http://www.sierrametals.com/role/RevenuesFromMiningOperations
240 Implied Table Table

*

*

 implied:Table
241 Revenues From Mining Operations [Abstract] Abstract smt:RevenuesFromMiningOperationsAbstract
242 Revenues from mining operations Concept (Text Block (HTML)) For Period smt:DisclosureOfRevenuesFromMiningOperationsTextBlock
243 030 - Disclosure - Contingencies Network

*

*

 http://www.sierrametals.com/role/Contingencies
244 Implied Table Table

*

*

 implied:Table
245 Disclosure of contingent liabilities [abstract] Abstract ifrs-full:DisclosureOfContingentLiabilitiesAbstract
246 Contingencies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfContingentLiabilitiesExplanatory
247 031 - Disclosure - Distribution of Cautivo Mining Inc. Shares Network

*

*

 http://www.sierrametals.com/role/DistributionOfCautivoMiningIncShares
248 Implied Table Table

*

*

 implied:Table
249 Disclosure For Spin Off Transaction Abstract Abstract smt:DisclosureForSpinOffTransactionAbstract
250 Distribution of Cautivo Mining Inc. Shares Concept (Text Block (HTML)) For Period smt:DisclosureForSpinOffTransactionTextBlock
251 032 - Disclosure - Subsequent Events Network

*

*

 http://www.sierrametals.com/role/SubsequentEvents
252 Implied Table Table

*

*

 implied:Table
253 Disclosure of non-adjusting events after reporting period [abstract] Abstract ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract
254 Subsequent Events Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory
255 033 - Disclosure - Significant accounting policies (Policies) Network

*

*

 http://www.sierrametals.com/role/SignificantaccountingpoliciesPolicies
256 Implied Table Table

*

*

 implied:Table
257 Disclosure Of Significant Accounting Policies [Abstract] Abstract smt:DisclosureOfSignificantAccountingPoliciesAbstract
258 Basis of preparation Concept (Text Block (HTML)) For Period ifrs-full:StatementOfIFRSCompliance
259 Basis of consolidation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
260 Foreign currency translation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
261 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
262 Financial Instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
263 Segment reporting Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
264 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
265 Exploration and evaluation expenditure Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForExplorationAndEvaluationExpenditures
266 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
267 Impairment of non-financial assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
268 Borrowing costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
269 Revenue recognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
270 Share capital Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
271 Share-based payments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
272 Share repurchases Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTreasurySharesExplanatory
273 Earnings (loss) per share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
274 Income taxes Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
275 Decommissioning and restoration liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory
276 034 - Disclosure - Significant accounting policies (Tables) Network

*

*

 http://www.sierrametals.com/role/SignificantaccountingpoliciesTables
277 Implied Table Table

*

*

 implied:Table
278 Disclosure Of Significant Accounting Policies [Abstract] Abstract smt:DisclosureOfSignificantAccountingPoliciesAbstract
279 Schedule of subsidiaries of the company and their geographical locations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
280 Schedule of average estimated useful lives of property, plant and equipment Concept (Text Block (HTML)) For Period smt:ScheduleOfAverageEstimatedUsefulLivesOfPropertyPlantAndEquipmentTableTextBlock
281 035 - Disclosure - Trade and other receivables (Tables) Network

*

*

 http://www.sierrametals.com/role/TradeandotherreceivablesTables
282 Implied Table Table

*

*

 implied:Table
283 Trade and other receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
284 Schedule of trade and other receivables Concept (Text Block (HTML)) For Period smt:ScheduleOfTradeAndOtherReceivablesTableTextBlock
285 036 - Disclosure - Inventories (Tables) Network

*

*

 http://www.sierrametals.com/role/InventoriesTables
286 Implied Table Table

*

*

 implied:Table
287 Inventories [Abstract] Abstract smt:InventoriesAbstract
288 Schedule of inventories Concept (Text Block (HTML)) For Period smt:ScheduleOfInventoriesTableTextBlock
289 037 - Disclosure - Property, plant and equipment (Tables) Network

*

*

 http://www.sierrametals.com/role/PropertyplantandequipmentTables
290 Implied Table Table

*

*

 implied:Table
291 Disclosure of detailed information about property, plant and equipment [abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
292 Schedule of property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
293 038 - Disclosure - Accounts payable and accrued liabilities (Tables) Network

*

*

 http://www.sierrametals.com/role/AccountspayableandaccruedliabilitiesTables
294 Implied Table Table

*

*

 implied:Table
295 Trade and other current payables [abstract] Abstract ifrs-full:TradeAndOtherCurrentPayablesAbstract
296 Schedule of accounts payable and accrued liabilities Concept (Text Block (HTML)) For Period smt:ScheduleOfTradePayableAndAccruedLiabilitiesTableTextBlock
297 039 - Disclosure - Current and deferred income tax liability (Tables) Network

*

*

 http://www.sierrametals.com/role/CurrentanddeferredincometaxliabilityTables
298 Implied Table Table

*

*

 implied:Table
299 Current And Deferred Income Tax Liability [Abstract] Abstract smt:CurrentAndDeferredIncomeTaxLiabilityAbstract
300 Schedule of income and resource taxes Concept (Text Block (HTML)) For Period smt:ScheduleOfIncomeAndResourceTaxesTableTextBlock
301 Schedule of reconciliation between income tax expense and the product of loss Concept (Text Block (HTML)) For Period smt:ScheduleOfReconciliationBetweenIncomeTaxExpenseAndProductOfLossTableTextBlock
302 Schedule of temporary differences and components and movements of net deferred tax assets and liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
303 040 - Disclosure - Loans payable (Tables) Network

*

*

 http://www.sierrametals.com/role/LoanspayableTables
304 Implied Table Table

*

*

 implied:Table
305 Disclosure of detailed information about borrowings [abstract] Abstract ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsAbstract
306 Schedule of loans payable Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
307 041 - Disclosure - Decommissioning liability (Tables) Network

*

*

 http://www.sierrametals.com/role/DecommissioningliabilityTables
308 Implied Table Table

*

*

 implied:Table
309 Disclosure of other provisions [abstract] Abstract ifrs-full:DisclosureOfOtherProvisionsAbstract
310 Schedule of decommissioning liability Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory
311 Schedule of key assumptions of calculation of decommissioning liability Concept (Text Block (HTML)) For Period smt:ScheduleOfKeyAssumptionsOfCalculationOfDecommissioningLiabilityTableTextBlock
312 042 - Disclosure - Other liabilities (Tables) Network

*

*

 http://www.sierrametals.com/role/OtherliabilitiesTables
313 Implied Table Table

*

*

 implied:Table
314 Disclosure Of Other Liabilities Abstract Abstract smt:DisclosureOfOtherLiabilitiesAbstract
315 Schedule of other liabilities Concept (Text Block (HTML)) For Period smt:ScheduleOfOtherLiabilitiesTableTextBlock
316 043 - Disclosure - Share capital and share-based payments (Tables) Network

*

*

 http://www.sierrametals.com/role/SharecapitalandsharebasedpaymentsTables
317 Implied Table Table

*

*

 implied:Table
318 Disclosure of terms and conditions of share-based payment arrangement [abstract] Abstract ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract
319 Schedule of changes in RSU's issued Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory
320 044 - Disclosure - Non-controlling interest (Tables) Network

*

*

 http://www.sierrametals.com/role/NoncontrollinginterestTables
321 Implied Table Table

*

*

 implied:Table
322 Disclosure Of Non Controlling Interest [Abstract] Abstract smt:DisclosureOfNonControllingInterestAbstract
323 Schedule of non-controlling interest Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncontrollingInterestsExplanatory
324 045 - Disclosure - Expenses by nature (Tables) Network

*

*

 http://www.sierrametals.com/role/ExpensesbynatureTables
325 Implied Table Table

*

*

 implied:Table
326 Expenses by nature [abstract] Abstract ifrs-full:ExpenseByNatureAbstract
327 Schedule of mining cost Concept (Text Block (HTML)) For Period smt:ScheduleOfMiningCostTableTextBlock
328 Schedule of general and administrative expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfExpensesExplanatory
329 046 - Disclosure - Other income (expenses) (Tables) Network

*

*

 http://www.sierrametals.com/role/OtherincomeexpensesTables
330 Implied Table Table

*

*

 implied:Table
331 Disclosure Of Other Income Expenses [Abstract] Abstract smt:DisclosureOfOtherIncomeExpensesAbstract
332 Schedule of other income (expenses) Concept (Text Block (HTML)) For Period smt:ScheduleOfOtherNonOperatingIncomeExpensesTableTextBlock
333 047 - Disclosure - Interest expense and other finance costs (Tables) Network

*

*

 http://www.sierrametals.com/role/InterestexpenseandotherfinancecostsTables
334 Implied Table Table

*

*

 implied:Table
335 Disclosure Of Interest Expense And Other Finance Costs [Abstract] Abstract smt:DisclosureOfInterestExpenseAndOtherFinanceCostsAbstract
336 Schedule of interest expense and other finance costs Concept (Text Block (HTML)) For Period smt:ScheduleOfInterestExpenseAndOtherFinanceCostsTableTextBlock
337 048 - Disclosure - Segment reporting (Tables) Network

*

*

 http://www.sierrametals.com/role/SegmentreportingTables
338 Implied Table Table

*

*

 implied:Table
339 Disclosure of operating segments [abstract] Abstract ifrs-full:DisclosureOfOperatingSegmentsAbstract
340 Schedule of summary of the reported amounts of net income (loss) and the carrying amounts of assets and liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
341 049 - Disclosure - Financial instruments and financial risk management (Tables) Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagementTables
342 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
343 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
344 Risks [member] Member ifrs-full:TypesOfRisksMember
345 Currency risk Member ifrs-full:CurrencyRiskMember
346 Commodity price risk Member ifrs-full:CommodityPriceRiskMember
347 Credit risk Member ifrs-full:CreditRiskMember
348 Liquidity risk Member ifrs-full:LiquidityRiskMember
349 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
350 Schedule of financial assets and liabilities by category Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory
351 Schedule of fair value measurements of assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
352 Schedule of exposure to risks Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatory
353 Schedule of remaining contractual maturities and undiscounted cash flows Concept (Text Block (HTML)) For Period smt:ScheduleOfRemainingContractualMaturitiesAndUndiscountedCashFlowsTableTextBlock
354 050 - Disclosure - Capital management (Tables) Network

*

*

 http://www.sierrametals.com/role/CapitalmanagementTables
355 Implied Table Table

*

*

 implied:Table
356 Disclosure of objectives, policies and processes for managing capital [abstract] Abstract ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalAbstract
357 Schedule of capital of the Company Concept (Text Block (HTML)) For Period smt:ScheduleOfCapitalManagementTableTextBlock
358 051 - Disclosure - Related party transactions (Tables) Network

*

*

 http://www.sierrametals.com/role/RelatedPartyTransactionsTables
359 Implied Table Table

*

*

 implied:Table
360 Related party transactions [abstract] Abstract ifrs-full:RelatedPartyTransactionsAbstract
361 Schedule of remuneration to directors and key management personnel Concept (Text Block (HTML)) For Period smt:ScheduleOfRemunerationToDirectorsAndKeyManagementPersonnelTableTextBlock
362 052 - Disclosure - Supplemental cash flow information (Tables) Network

*

*

 http://www.sierrametals.com/role/SupplementalCashFlowInformationTables
363 Implied Table Table

*

*

 implied:Table
364 Disclosure Of Supplemental Cash Flow Information [Abstract] Abstract smt:DisclosureOfSupplementalCashFlowInformationAbstract
365 Supplemental cash flow information Concept (Text Block (HTML)) For Period smt:DisclosureOfSupplementalCashFlowInformationTableTextBlock
366 053 - Disclosure - Revenues from mining operations (Tables) Network

*

*

 http://www.sierrametals.com/role/RevenuesfromminingoperationsTables
367 Implied Table Table

*

*

 implied:Table
368 Revenues From Mining Operations [Abstract] Abstract smt:RevenuesFromMiningOperationsAbstract
369 Schedule of revenue in consolidated statements of income Concept (Text Block (HTML)) For Period smt:DisclosureOfDetailedInformationAboutConsolidatedStatementsOfIncomeTableTextBlock
370 Schedule of disaggregation of revenue Concept (Text Block (HTML)) For Period smt:DisclosureOfDetailedInformationAboutDisaggregationOfRevenueTableTextBlock
371 054 - Disclosure - Description of business and nature of operations (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/DescriptionOfBusinessAndNatureOfOperationsDetailTextuals
372 Description Of Business And Nature Of Operations Disclosure [Table] Table

*

*

 smt:DescriptionOfBusinessAndNatureOfOperationsDisclosureTable
373 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
374 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
375 Yauricocha Mine Member smt:YauricochaMineMember
376 Bolivar Member smt:BolivarMember
377 Cusi Mines Member smt:CusiMinesMember
378 Description Of Business And Nature Of Operations Disclosure [Line Items] LineItems smt:DescriptionOfBusinessAndNatureOfOperationsDisclosureLineItems
379 Percentage of owned interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
380 055 - Disclosure - Significant accounting policies (Details) Network

*

*

 http://www.sierrametals.com/role/SignificantaccountingpoliciesDetails
381 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
382 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
383 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
384 Dia Bras EXMIN Resources Inc. Member smt:DiaBrasExminResourcesIncMember
385 Sociedad Minera Corona, S. A. ("Corona") Member smt:SociedadMineraCoronaSAMember
386 Dia Bras Peru, S. A. C. ("Dia Bras Peru") Member smt:DiaBrasPeruSACMember
387 Dia Bras Mexicana, S. A. de C. V. ("Dia Bras Mexicana") Member smt:DiaBrasMexicanaSADeCVMember
388 Servicios de Minera de la Sierra, S. A. de C. V. Member smt:ServiciosDeMinerADeLaSierraSADeCVMember
389 Bolivar Administradores, S. A. de C. V. Member smt:BolVarAdministradoresS.A.DeC.V.Member
390 Exploraciones Mineras Dia Bras, S. A. de C. V. Member smt:ExploracionesMinerasDiaBrasSADeCVMember
391 EXMIN, S. A. de C. V. Member smt:ExminSADeCVMember
392 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
393 Ownership interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
394 Location Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOrResidenceOfSubsidiary
395 056 - Disclosure - Significant accounting policies (Details 1) Network

*

*

 http://www.sierrametals.com/role/SignificantaccountingpoliciesDetails1
396 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
397 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
398 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
399 Vehicles, furniture and other assets Member smt:VehiclesFurnitureAndOtherAssetsMember
400 Machinery and equipment Member ifrs-full:MachineryMember
401 Buildings and other constructions Member ifrs-full:LandAndBuildingsMember
402 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
403 Useful life Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
404 057 - Disclosure - Significant accounting policies (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/SignificantAccountingPoliciesDetailTextuals
405 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
406 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
407 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
408 Corona Member smt:SociedadMineraCoronaSAMember
409 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
410 Ownership interest through Dia Bras Peru Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
411 Percentage of voting shares in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfVotingPowerHeldInSubsidiary
412 Unowned non controlling interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
413 Depreciation method Concept (Text/String) For Period ifrs-full:DepreciationMethodPropertyPlantAndEquipment
414 058 - Disclosure - Trade and other receivables (Details) Network

*

*

 http://www.sierrametals.com/role/TradeandotherreceivablesDetails
415 Implied Table Table

*

*

 implied:Table
416 Trade and other receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
417 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
418 Sales tax receivables Concept (Monetary) As Of Debit ifrs-full:CurrentReceivablesFromTaxesOtherThanIncomeTax
419 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
420 Total Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
421 059 - Disclosure - Inventories (Details) Network

*

*

 http://www.sierrametals.com/role/InventoriesDetails
422 Implied Table Table

*

*

 implied:Table
423 Inventories [Abstract] Abstract smt:InventoriesAbstract
424 Stockpiles Concept (Monetary) As Of Debit ifrs-full:CurrentOreStockpiles
425 Concentrates Concept (Monetary) As Of Debit smt:Concentrates
426 Supplies and spare parts Concept (Monetary) As Of Debit ifrs-full:SpareParts
427 Total Concept (Monetary) As Of Debit ifrs-full:Inventories
428 060 - Disclosure - Inventories (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/InventoriesDetailTextuals
429 Inventories Table Table

*

*

 smt:InventoriesTable
430 Inventories Axis Axis smt:InventoriesAxis
431 Inventories Domain Member smt:InventoriesDomain
432 Supplies and spare parts Member smt:SuppliesAndSparePartsMember
433 Stockpile and concentrate Member smt:StockpileAndConcentrateMember
434 Inventories Line Items LineItems smt:InventoriesLineItems
435 Cost of inventories recognised as expense Concept (Monetary) For Period Debit ifrs-full:CostOfInventoriesRecognisedAsExpenseDuringPeriod
436 Provision for inventory write off Concept (Monetary) For Period Credit smt:ProvisionForInventoryWriteOff
437 Inventory write-down Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
438 Inventories, at net realisable value Concept (Monetary) As Of Debit ifrs-full:InventoriesAtNetRealisableValue
439 061 - Disclosure - Property, plant and equipment (Details) Network

*

*

 http://www.sierrametals.com/role/PropertyplantandequipmentDetails
440 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
441 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
442 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
443 Plant and equipment Member smt:PlantAndEquipmentMember
444 Mining properties Member ifrs-full:MiningPropertyMember
445 Assets under construction Member ifrs-full:ConstructionInProgressMember
446 Exploration and evaluation expenditure Member ifrs-full:TangibleExplorationAndEvaluationAssetsMember
447 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
448 Carrying amount [member] Member ifrs-full:CarryingAmountMember
449 Gross carrying amount Member ifrs-full:GrossCarryingAmountMember
450 Accumulated depreciation, amortisation Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
451 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
452 Balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
453 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
454 Depletion, depreciation and amortization Concept (Monetary) For Period smt:DepletionDepreciationAmortizationPropertyPlantAndEquipment
455 Change in estimate of decomissioning liability Concept (Monetary) For Period Debit smt:ChangeInEstimateOfDecomissioningLiabilityPropertyPlantAndEquipment
456 Disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
457 Foreign exchange revaluation Concept (Monetary) For Period Debit ifrs-full:RevaluationIncreaseDecreasePropertyPlantAndEquipment
458 Transfers Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesPropertyPlantAndEquipment
459 Balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
460 062 - Disclosure - Property, plant and equipment (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/PropertyPlantAndEquipmentDetailTextuals
461 Implied Table Table

*

*

 implied:Table
462 Disclosure of detailed information about property, plant and equipment [abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
463 Depletion and depreciation expense Concept (Monetary) For Period Debit smt:DepletionAndDepreciationExpense
464 Depletion and depreciation expense capitalized to inventory Concept (Monetary) For Period Credit smt:DepreciationAndDepletionCapitalized
465 Borrowing costs capitalized Concept (Monetary) For Period ifrs-full:BorrowingCostsCapitalised
466 Capitalisation weighted average rate of borrowing costs Concept (Percent) For Period ifrs-full:CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
467 063 - Disclosure - Accounts payable and accrued liabilities (Details) Network

*

*

 http://www.sierrametals.com/role/AccountspayableandaccruedliabilitiesDetails
468 Implied Table Table

*

*

 implied:Table
469 Trade and other current payables [abstract] Abstract ifrs-full:TradeAndOtherCurrentPayablesAbstract
470 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
471 Other payables and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
472 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
473 064 - Disclosure - Current and deferred income tax liability (Details) Network

*

*

 http://www.sierrametals.com/role/CurrentanddeferredincometaxliabilityDetails
474 Implied Table Table

*

*

 implied:Table
475 Current And Deferred Income Tax Liability [Abstract] Abstract smt:CurrentAndDeferredIncomeTaxLiabilityAbstract
476 Current Tax Expense Abstract ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
477 Current income tax Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
478 Total Current Tax Expense Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
479 Deferred Tax Recovery Abstract ifrs-full:DeferredTaxExpenseIncomeAbstract
480 Deferred Tax Expense (recovery) Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
481 Total Deferred Tax Expense (recovery) Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
482 Total tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
483 065 - Disclosure - Current and deferred income tax liability (Details 1) Network

*

*

 http://www.sierrametals.com/role/CurrentanddeferredincometaxliabilityDetails1
484 Implied Table Table

*

*

 implied:Table
485 Current And Deferred Income Tax Liability [Abstract] Abstract smt:CurrentAndDeferredIncomeTaxLiabilityAbstract
486 Income (loss) before income taxes Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
487 Expected Tax Rate @ 26.50% (2017 - 26.50%) Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
488 Effect of tax rate differences Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfTaxLosses
489 Stock based compensation costs Concept (Monetary) For Period Debit smt:TaxEffectOfStockBasedCompensationCosts
490 Other Non-deductible expenses Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
491 Unrealized foreign exchange income Concept (Monetary) For Period Debit smt:TaxEffectOfUnrealizedForeignExchangeIncome
492 Inflation Adjustment for Mexico tax purposes Concept (Monetary) For Period Debit smt:TaxEffectOfInflationAdjustmentForMexicoTaxPurposes
493 Expired losses Concept (Monetary) For Period Debit smt:TaxEffectOfExpiredLosses
494 Change in benefit of other temporary differences not recognized Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
495 Foreign exchange and other Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
496 Mining royalties and other Concept (Monetary) For Period Debit smt:TaxEffectOfMiningRoyaltiesAndOther
497 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
498 066 - Disclosure - Current and deferred income tax liability (Details 2) Network

*

*

 http://www.sierrametals.com/role/CurrentanddeferredincometaxliabilityDetails2
499 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
500 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
501 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
502 Temporary differences Member ifrs-full:TemporaryDifferenceMember
503 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
504 Non-capital and capital losses Concept (Monetary) As Of Debit smt:NonCapitalAndCapitalLossesForWhichNoDeferredTaxAssetRecognised
505 Property, plant and equipment Concept (Monetary) As Of Debit smt:PropertyPlantAndEquipmentForWhichNoDeferredTaxAssetRecognised
506 Mineral properties Concept (Monetary) As Of Debit smt:MineralPropertiesForWhichNoDeferredTaxAssetRecognised
507 Other Concept (Monetary) As Of Credit smt:OtherItemsForWhichNoDeferredTaxAssetRecognised
508 TOTAL Concept (Monetary) As Of ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
509 067 - Disclosure - Current and deferred income tax liability (Details 3) Network

*

*

 http://www.sierrametals.com/role/CurrentanddeferredincometaxliabilityDetails3
510 Disclosure Of Deferred Income Taxes [Table] Table

*

*

 smt:DisclosureOfDeferredIncomeTaxesTable
511 Deferred Tax Assets And Liabilities [Axis] Axis smt:DeferredTaxAssetsAndLiabilitiesAxis
512 Deferred Tax Assets And Liabilities [Domain] Member smt:DeferredTaxAssetsAndLiabilitiesDomain
513 Mining assets Member ifrs-full:MiningAssetsMember
514 Property, Plant, and equipment Member ifrs-full:OtherPropertyPlantAndEquipmentMember
515 Inventory Member smt:InventoryMember
516 Provisions Member smt:OtherProvisionsOneMember
517 Decommissioning liabilities Member smt:DecommissioningLiabilitiesMember
518 Mining royalties Member smt:MiningRoyaltiesMember
519 Mining assets Member smt:MiningAssetsTwoMember
520 Deferred revenue Member smt:DeferredRevenueMember
521 Other items Member smt:OtherItemsMember
522 Non-capital losses Member smt:NonCapitalLossesMember
523 Disclosure Of Deferred Income Taxes [Line Items] LineItems smt:DisclosureOfDeferredIncomeTaxesLineItems
524 Disclosure Of Deferred Income Taxes [Roll Forward] Abstract smt:DisclosureOfDeferredIncomeTaxesRollForward
525 Begriming Balance Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
526 Change in deferred tax liability Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInDeferredTaxLiabilityAsset
527 Ending Balance Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
528 068 - Disclosure - Current and deferred income tax liability (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/CurrentAndDeferredIncomeTaxLiabilityDetailTextuals
529 Implied Table Table

*

*

 implied:Table
530 Current And Deferred Income Tax Liability [Abstract] Abstract smt:CurrentAndDeferredIncomeTaxLiabilityAbstract
531 Unrealized aggregate tax losses Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
532 Capital losses without expiry Concept (Monetary) As Of Debit smt:CapitalLosses
533 Taxable temporary difference of investments in subsidiaries that has not been recognized Concept (Monetary) As Of ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures
534 Applicable tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
535 069 - Disclosure - Loans payable (Details) Network

*

*

 http://www.sierrametals.com/role/Loanspayabledetails
536 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
537 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
538 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
539 Acquisition loan with Banco de Credito del Peru Member smt:AcquisitionLoanWithBancoDeCreditoDelPeruMember
540 Operating loan with Banco de Credito del Peru Member smt:OperatingLoanWithBancoDeCreditoDelPeruMember
541 Revolving credit facility with Banco de Credito del Peru Member smt:RevolvingCreditFacilityWithBancoDeCreditoDelPeruMember
542 Notes payable to BBVA Banco Continental Member smt:NotesPayableToBbvaBancoContinentalMember
543 Loan with FIFOMI Member smt:LoanWithFiduciariaDelFideicomisoDeFomentoMineroMember
544 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
545 Current Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
546 Non-current Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
547 Total loans payable Concept (Monetary) As Of Credit ifrs-full:Borrowings
548 070 - Disclosure - Loans payable (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/LoansPayableDetailTextuals
549 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
550 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
551 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
552 Corona Acquisition Loan with Banco de Credito del Peru S.A. ("BCP") Member smt:AcquisitionLoanWithBancoDeCreditoDelPeruMember
553 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
554 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
555 LIBOR interest rate Member smt:BorrowingLondonInterBankOfferedRateLiborMember
556 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
557 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
558 Corona Member smt:CoronaMember
559 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
560 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
561 Dia Bras Member smt:DiaBrasPeruMember
562 Maturity [axis] Axis ifrs-full:MaturityAxis
563 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
564 Tranche 1 quarterly principal repayments beginning in November 2016 Till August 2020 Member smt:BorrowingRepaymentPeriodNovember2016TillAugust2020Member
565 Tranche 2 Due in Full August 2020 Member smt:Tranche2DueInFullAugust2020Member
566 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
567 Loan agreement amount Concept (Monetary) As Of ifrs-full:NotionalAmount
568 Financing cost Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
569 Net proceeds from loan agreement Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
570 Percentage of acquisition Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
571 Borrowing maturity Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
572 Principal repayment grace period Concept (xbrli:durationItemType) For Period smt:PrincipalRepaymentGracePeriod
573 Description of interest rate basis Concept (Text/String) For Period smt:BorrowingsAdjustmentToInterestRateBasisDescription
574 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
575 Current borrowings Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
576 Borrowing, extended maturity Concept (xbrli:durationItemType) For Period smt:BorrowingMaturityExtended
577 Principal repayments Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
578 Amortized cost borrowing effective interest rate Concept (Percent) As Of smt:AmortizedCostBorrowingEffectiveInterestRate
579 Amortization expense of borrowing transaction cost Concept (Monetary) For Period Debit smt:AmortizationExpenseOfBorrowingTransactionCosts
580 Interest payment Concept (Monetary) For Period Debit ifrs-full:InterestExpense
581 071 - Disclosure - Loans payable (Detail Textuals 1) Network

*

*

 http://www.sierrametals.com/role/LoansPayableDetailTextuals1
582 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
583 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
584 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
585 Corona Operating Loan with BCP Member smt:OperatingLoanWithBancoDeCreditoDelPeruMember
586 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
587 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
588 Corona Member smt:CoronaMember
589 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
590 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
591 Credit Facility Member smt:CreditFacilityMember
592 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
593 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
594 LIBOR interest rate Member smt:BorrowingLondonInterBankOfferedRateLiborMember
595 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
596 Percentage of acquisition Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
597 Loan agreement amount Concept (Monetary) As Of ifrs-full:NotionalAmount
598 Borrowing maturity Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
599 Withdrawal period Concept (xbrli:durationItemType) For Period smt:WithdrawalPeriod
600 Maximum amount of withdrawal during first year Concept (Monetary) As Of Credit smt:MaximumAmountOfWithdrawalDuringFirstYear
601 Maximum amount of withdrawal during second year Concept (Monetary) As Of Credit smt:MaximumAmountOfWithdrawalDuringSecondYear
602 Maximum amount of withdrawal during third year Concept (Monetary) As Of Credit smt:MaximumAmountOfWithdrawalDuringThirdYear
603 Adjustment to interest rate basis Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
604 Borrowing first payment period due Concept (xbrli:durationItemType) For Period smt:BorrowingFirstPaymentPeriodDue
605 Maximum amount of equity balance to be maintain under covenant Concept (Monetary) As Of Credit smt:MaximumAmountOfEquityBalanceToBeMaintainUnderCovenant
606 Description of covenant condition Concept (Text/String) For Period smt:DescriptionOfCovenantCondition
607 Amount of borrowing withdrawn Concept (Monetary) As Of Debit smt:AmountOfBorrowingWithdrawn
608 Description of interest rate basis Concept (Text/String) For Period smt:BorrowingsAdjustmentToInterestRateBasisDescription
609 Repayments of borrowings, classified as financing activities Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
610 Interest payment Concept (Monetary) For Period Debit ifrs-full:InterestExpense
611 072 - Disclosure - Loans payable (Detail Textuals 2) Network

*

*

 http://www.sierrametals.com/role/LoansPayableDetailTextuals2
612 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
613 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
614 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
615 DBP Credit Facility with BCP Member smt:RevolvingCreditFacilityWithBancoDeCreditoDelPeruMember
616 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
617 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
618 LIBOR interest rate Member smt:BorrowingLondonInterBankOfferedRateLiborMember
619 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
620 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
621 Credit Facility Member smt:CreditFacilityMember
622 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
623 Loan agreement amount Concept (Monetary) As Of ifrs-full:NotionalAmount
624 Borrowing maturity Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
625 Adjustment to interest rate basis Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
626 Amount of borrowing withdrawn Concept (Monetary) As Of Debit smt:AmountOfBorrowingWithdrawn
627 Description of interest rate basis Concept (Text/String) For Period smt:BorrowingsAdjustmentToInterestRateBasisDescription
628 073 - Disclosure - Loans payable (Detail Textuals 3) Network

*

*

 http://www.sierrametals.com/role/LoansPayableDetailTextuals3
629 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
630 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
631 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
632 Notes payable to BBVA Banco Continental Member smt:NotesPayableToBbvaBancoContinentalMember
633 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
634 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
635 Credit Facility Member smt:CreditFacilityMember
636 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
637 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
638 LIBOR interest rate Member smt:BorrowingLondonInterBankOfferedRateLiborMember
639 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
640 Loan agreement amount Concept (Monetary) As Of ifrs-full:NotionalAmount
641 Description of interest rate basis Concept (Text/String) For Period smt:BorrowingsAdjustmentToInterestRateBasisDescription
642 Borrowings, adjustment to interest rate basis Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
643 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
644 Borrowing maturity Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
645 Principal repayments Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
646 074 - Disclosure - Loans payable (Detail Textuals 4) Network

*

*

 http://www.sierrametals.com/role/LoansPayableDetailTextuals4
647 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
648 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
649 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
650 FIFOMI loan Member smt:LoanWithFiduciariaDelFideicomisoDeFomentoMineroMember
651 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
652 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
653 Dia Bras Member smt:DiaBrasPeruMember
654 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
655 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
656 TIIE Member smt:EquilibriumInterbankingInterestRateMember
657 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
658 Loan agreement amount Concept (Monetary) As Of ifrs-full:NotionalAmount
659 Amount of borrowing withdrawn Concept (Monetary) As Of Debit smt:AmountOfBorrowingWithdrawn
660 Financing cost Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
661 Net proceeds from loan agreement Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
662 Interest payment Concept (Monetary) For Period Debit ifrs-full:InterestExpense
663 Adjustment to interest rate basis Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
664 Borrowing repayment term Concept (xbrli:durationItemType) For Period smt:BorrowingsRepaymentTerm
665 Principal payments Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
666 075 - Disclosure - Decommissioning liability (Details) Network

*

*

 http://www.sierrametals.com/role/DecommissioningliabilityDetails
667 Implied Table Table

*

*

 implied:Table
668 Disclosure of other provisions [abstract] Abstract ifrs-full:DisclosureOfOtherProvisionsAbstract
669 Balance, beginning of year Concept (Monetary) As Of Credit ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCosts
670 Liabilities settled during the year Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
671 Interest cost Concept (Monetary) For Period Debit smt:InterestCostOnDecommissioningLiability
672 Revisions and new estimated cash flows Concept (Monetary) For Period Credit smt:RevisionsAndNewEstimatedCashFlows
673 Balance, end of year Concept (Monetary) As Of Credit ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCosts
674 Less: current portion Concept (Monetary) As Of Credit smt:ContingentDecommissioningLiability
675 Long-term decommissioning liability Concept (Monetary) As Of Credit smt:ContingentDecommissioningLiabilityNonCurrent
676 076 - Disclosure - Decommissioning liability (Details 1) Network

*

*

 http://www.sierrametals.com/role/DecommissioningliabilityDetails1
677 Disclosure of other provisions [table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
678 Range [axis] Axis ifrs-full:RangeAxis
679 Ranges [member] Member ifrs-full:RangesMember
680 Minimum Member ifrs-full:BottomOfRangeMember
681 Maximum Member ifrs-full:TopOfRangeMember
682 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
683 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
684 Peru Member country:PE
685 Mexico Member country:MX
686 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
687 Estimated undiscounted cash flows Concept (Monetary) As Of Credit smt:ProvisionForDecommissioningRestorationAndRehabilitationCostsUndiscountedCashFlows
688 Discount rate Concept (Percent) As Of smt:MajorAssumptionsConcerningFutureEventsOtherProvisionsDiscountRate
689 Settlement period Concept (xbrli:durationItemType) For Period smt:PeriodOfSettlementOfProvisionsOtherProvision
690 077 - Disclosure - Other liabilities (Details) Network

*

*

 http://www.sierrametals.com/role/OtherLiabilitiesDetails
691 Implied Table Table

*

*

 implied:Table
692 Disclosure Of Other Liabilities Abstract Abstract smt:DisclosureOfOtherLiabilitiesAbstract
693 Current Abstract smt:OtherCurrentLiabilitiesAbstract
694 Profit-sharing and other employee related obligations Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
695 Non-current Abstract smt:OtherNoncurrentLiabilitiesAbstract
696 Other employee related obligations Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
697 078 - Disclosure - Other liabilities (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/OtherLiabilitiesDetailTextuals
698 Disclosure Of Other Liabilities [Table] Table

*

*

 smt:DisclosureOfOtherLiabilitiesTable
699 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
700 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
701 PERU Member country:PE
702 Disclosure Of Other Liabilities [Line Items] LineItems smt:DisclosureOfOtherLiabilitiesLineItems
703 Provisions for employee benefits Concept (Monetary) As Of Credit ifrs-full:ProvisionsForEmployeeBenefits
704 Provision for wages, salaries and other employee benefits Concept (Monetary) As Of Credit smt:ProvisionForWagesSalariesAndOtherEmployeeBenefits
705 080 - Disclosure - Share capital and share-based payments - (Details 1) Network

*

*

 http://www.sierrametals.com/role/ShareCapitalAndShareBasedPaymentsDetails1
706 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
707 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
708 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
709 RSU Member smt:RestrictedShareUnitsMember
710 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
711 Outstanding, beginning of period Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
712 Granted Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
713 Exercised Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
714 Forfeited Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
715 Outstanding, end of period Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
716 081 - Disclosure - Share capital and share-based payments - (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/ShareCapitalAndShareBasedPaymentsDetailTextuals
717 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
718 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
719 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
720 RSU Member smt:RestrictedShareUnitsMember
721 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
722 Current maximum number of common shares authorized Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
723 Number of RSU's granted under tranche two Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
724 Fair value of RSU's granted under tranche two Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement
725 Weighted average fair value of RSUs exercised under tranche two Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
726 Weighted average fair value of RSUs forfeited under tranche two Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
727 Weighted average fair value of RSUs outstanding under tranche two Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
728 Share-based compensation expense Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
729 082 - Disclosure - Non-controlling interest -Summarized balance sheet - (Details) Network

*

*

 http://www.sierrametals.com/role/NonControllingInterestSummarizedBalanceSheetDetails
730 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
731 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
732 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
733 Corona Member ifrs-full:SubsidiariesWithMaterialNoncontrollingInterestsMember
734 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
735 Current Abstract ifrs-full:NetCurrentAssetsLiabilitiesAbstract
736 Assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
737 Liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
738 Total current net assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssetsLiabilities
739 Non-current Abstract smt:NetNonCurrentAssetsLiabilitiesAbstract
740 Assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
741 Liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
742 Total non-current net assets Concept (Monetary) As Of Debit smt:NetNonCurrentAssetsLiabilities
743 Net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
744 083 - Disclosure - Non-controlling interest - Summarized income statement - (Details 1) Network

*

*

 http://www.sierrametals.com/role/NonControllingInterestSummarizedIncomeStatementDetails1
745 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
746 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
747 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
748 Corona Member ifrs-full:SubsidiariesWithMaterialNoncontrollingInterestsMember
749 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
750 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
751 Income before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
752 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
753 Total income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
754 Total income attributable to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
755 Dividends paid to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterests
756 084 - Disclosure - Non-controlling interest - Summarized cash flows - (Details 2) Network

*

*

 http://www.sierrametals.com/role/NonControllingInterestSummarizedCashFlowsDetails2
757 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
758 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
759 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
760 Corona Member ifrs-full:SubsidiariesWithMaterialNoncontrollingInterestsMember
761 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
762 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
763 Cash generated from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
764 Net changes in non cash working capital items Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
765 Decomissioning liabilities settled Concept (Monetary) For Period Credit smt:AdjustmentForDecomissioningLiabilitiesSettledAttributableToNonControllingInterestsClassifiedFromOperatingActivity
766 Income taxes paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities
767 Net cash generated from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
768 Net cash used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
769 Net cash used in financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
770 Effect of foreign exchange rate changes on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
771 Decrease in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
772 Cash and cash equivalents, beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
773 Cash and cash equivalents, end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
774 085 - Disclosure - Expenses by nature (Details) Network

*

*

 http://www.sierrametals.com/role/ExpensesByNatureDetails
775 Implied Table Table

*

*

 implied:Table
776 Expenses by nature [abstract] Abstract ifrs-full:ExpenseByNatureAbstract
777 Employee compensation and benefits Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
778 Third party and contractors costs Concept (Monetary) For Period Debit smt:ThirdPartyAndContractorsCosts
779 Depreciation Concept (Monetary) For Period Debit smt:DepreciationDepletionAndAmortizationExpense
780 Consumables Concept (Monetary) For Period Debit ifrs-full:RawMaterialsAndConsumablesUsed
781 Changes in inventory and other Concept (Monetary) For Period Debit smt:OtherMiningCosts
782 Total Mining costs Concept (Monetary) For Period Debit ifrs-full:CostOfSales
783 086 - Disclosure - Expenses by nature (Details 1) Network

*

*

 http://www.sierrametals.com/role/ExpensesByNatureDetails1
784 Implied Table Table

*

*

 implied:Table
785 Expenses by nature [abstract] Abstract ifrs-full:ExpenseByNatureAbstract
786 Salaries and benefits Concept (Monetary) For Period Debit smt:SalariesAndBenefits
787 Consulting and professional fees Concept (Monetary) For Period Debit smt:ConsultingAndProfessionalFees
788 Other Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
789 Office expenses Concept (Monetary) For Period Debit smt:OfficeExpenses
790 Marketing and communication expenses Concept (Monetary) For Period Debit smt:MarketingAndCommunicationExpenses
791 Share-based compensation expense Concept (Monetary) For Period Debit ifrs-full:ShorttermEmployeeBenefitsExpense
792 Listing and filing fees Concept (Monetary) For Period Debit smt:ListingAndFilingFees
793 Director expenses Concept (Monetary) For Period Debit smt:DirectorExpenses
794 Travelling expense Concept (Monetary) For Period Debit ifrs-full:TransportationExpense
795 Total General and administrative expenses Concept (Monetary) For Period Debit ifrs-full:GeneralAndAdministrativeExpense
796 087 - Disclosure - Other income (expenses) (Details) Network

*

*

 http://www.sierrametals.com/role/OtherIncomeExpensesDetails
797 Implied Table Table

*

*

 implied:Table
798 Disclosure Of Other Income Expenses [Abstract] Abstract smt:DisclosureOfOtherIncomeExpensesAbstract
799 Gain on sale of supplies and fixed assets Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfPropertyPlantAndEquipment
800 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
801 Allowance for inventory obsolescence Concept (Monetary) For Period Debit smt:AllowanceForInventoryObsolescence
802 Miscellaneous income (expenses) Concept (Monetary) For Period Credit smt:MiscellaneousIncomeExpenses
803 Total Other income (expenses) Concept (Monetary) For Period Credit ifrs-full:OtherIncome
804 088 - Disclosure - Interest expense and other finance costs (Details) Network

*

*

 http://www.sierrametals.com/role/InterestExpenseAndOtherFinanceCostsDetails
805 Implied Table Table

*

*

 implied:Table
806 Disclosure Of Interest Expense And Other Finance Costs [Abstract] Abstract smt:DisclosureOfInterestExpenseAndOtherFinanceCostsAbstract
807 Interest expense on BCP loan Concept (Monetary) For Period Debit smt:InterestExpenseOnThirdPartyBorrowings
808 Interest expense on other liabilities Concept (Monetary) For Period Debit smt:InterestExpenseOnOtherLiabilities
809 Amortization of loan transaction costs Concept (Monetary) For Period Debit smt:AmortizationOfLoanTransactionCosts
810 Interest cost on decommissioning liability Concept (Monetary) For Period Debit smt:InterestCostOnDecommissioningLiability
811 Interest expense and other finance costs Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnOtherFinancialLiabilities
812 089 - Disclosure - Segment reporting (Details) Network

*

*

 http://www.sierrametals.com/role/SegmentreportingDetails
813 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
814 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
815 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
816 Operating segment Member ifrs-full:OperatingSegmentsMember
817 Corporate Member ifrs-full:UnallocatedAmountsMember
818 Segments [axis] Axis ifrs-full:SegmentsAxis
819 Segments [member] Member ifrs-full:SegmentsMember
820 Yauricocha Mine Member smt:PeruYauricochaMineMember
821 Bolivar Mine Member smt:BolivarMexicoMineMember
822 Cusi Mine Member smt:MexicoCusiMineMember
823 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
824 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
825 PERU Member country:PE
826 MEXICO Member country:MX
827 CANADA Member country:CA
828 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
829 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
830 Production cost of sales Concept (Monetary) For Period Debit smt:MiningProductionCostOfSales
831 Depletion of mineral property Concept (Monetary) For Period Debit smt:DepletionExpense
832 Depreciation and amortization of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
833 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
834 Gross profit from mining operations Concept (Monetary) For Period Credit ifrs-full:GrossProfit
835 Income (loss) from operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
836 Loss on spin out of Plexmar net assets Concept (Monetary) For Period Debit smt:LossOnSpinOutOfNetAssets
837 Interest expense and other finance costs Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnOtherFinancialLiabilities
838 Other income (expense) Concept (Monetary) For Period Credit smt:OtherIncomeExpense
839 Foreign currency exchange loss Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
840 Income (loss) before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
841 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
842 Net income (loss) from operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
843 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
844 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
845 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
846 090 - Disclosure - Segment reporting (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/SegmentReportingDetailTextuals
847 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
848 Segments [axis] Axis ifrs-full:SegmentsAxis
849 Segments [member] Member ifrs-full:SegmentsMember
850 Yauricocha Mine Member smt:PeruYauricochaMineMember
851 Bolivar Mine Member smt:BolivarMexicoMineMember
852 Cusi Mine Member smt:MexicoCusiMineMember
853 Major customers [axis] Axis ifrs-full:MajorCustomersAxis
854 Customers [member] Member ifrs-full:MajorCustomersMember
855 Two Customers Member smt:TwoCustomersMember
856 First Customer Member smt:OneCustomerMember
857 Second Customer Member smt:TwoCustomerMember
858 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
859 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
860 PERU Member country:PE
861 MEXICO Member country:MX
862 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
863 Provisional pricing adjustments Concept (Monetary) For Period Debit smt:ProvisionalPricingAdjustments
864 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
865 Percentage of revenue Concept (Percent) For Period ifrs-full:PercentageOfEntitysRevenue
866 Information about major customers Concept (Text/String) For Period ifrs-full:InformationAboutMajorCustomers
867 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
868 091 - Disclosure - Financial instruments and financial risk management (Details) Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagementDetails
869 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
870 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
871 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
872 Loans and receivables Member ifrs-full:LoansAndReceivablesCategoryMember
873 FVTPL Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
874 Amortized Cost Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
875 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
876 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
877 Amortized Cost Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
878 FVTPL Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
879 Other financial liabilities Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
880 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
881 ASSETS Abstract ifrs-full:AssetsAbstract
882 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
883 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
884 Total Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
885 LIABILITIES Abstract ifrs-full:LiabilitiesAbstract
886 Accounts payable Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesToTradeSuppliers
887 Loans payable Concept (Monetary) As Of Credit ifrs-full:Borrowings
888 Total Financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
889 092 - Disclosure - Financial instruments and financial risk management (Details 1) Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagementDetails1
890 Disclosure of fair value measurement of assets [table] Table

*

*

 ifrs-full:DisclosureOfFairValueMeasurementOfAssetsTable
891 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
892 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
893 Trade receivables Member ifrs-full:TradeReceivablesMember
894 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
895 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
896 Level 1 Member ifrs-full:Level1OfFairValueHierarchyMember
897 Level 2 Member ifrs-full:Level2OfFairValueHierarchyMember
898 Level 3 Member ifrs-full:Level3OfFairValueHierarchyMember
899 Disclosure of fair value measurement of assets [line items] LineItems ifrs-full:DisclosureOfFairValueMeasurementOfAssetsLineItems
900 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
901 093 - Disclosure - Financial instruments and financial risk management (Details 2) Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagementDetails2
902 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
903 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
904 Risks [member] Member ifrs-full:TypesOfRisksMember
905 Currency Risk Member ifrs-full:CurrencyRiskMember
906 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
907 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
908 Income tax and other receivables Concept (Monetary) As Of Debit smt:IncomeTaxAndOtherReceivables
909 Assets subject to currency risk Concept (Monetary) As Of Debit smt:AssetsSubjectToCurrencyRisk
910 Accounts payable and other liabilities Concept (Monetary) As Of Credit smt:TradeReceivableAndOtherReceivable
911 Total Concept (Monetary) As Of Debit smt:NetAssetsSubjectToCurrencyRisk
912 094 - Disclosure - Financial instruments and financial risk management (Details 3) Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagementDetails3
913 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
914 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
915 Risks [member] Member ifrs-full:TypesOfRisksMember
916 Commodity price risk Member ifrs-full:CommodityPriceRiskMember
917 Concentrations Of Risk Benchmark [Axis] Axis smt:ConcentrationsOfRiskBenchmarkAxis
918 Concentrations Of Risk Benchmark [Domain] Member smt:ConcentrationsOfRiskBenchmarkDomain
919 Sales revenue from silver Member smt:SalesRevenueFromSilverMember
920 Sales revenue from copper Member smt:SalesRevenueFromCopperMember
921 Sales revenue from lead Member smt:SalesRevenueFromLeadMember
922 Sales revenue from gold Member smt:SalesRevenueFromGoldMember
923 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
924 10% decrease in commodity prices Concept (Monetary) As Of ifrs-full:RiskExposureAssociatedWithInstrumentsSharingCharacteristic
925 095 - Disclosure - Financial instruments and financial risk management (Details 4) Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagementDetails4
926 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
927 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
928 Risks [member] Member ifrs-full:TypesOfRisksMember
929 Liquidity risk Member ifrs-full:LiquidityRiskMember
930 Maturity [axis] Axis ifrs-full:MaturityAxis
931 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
932 Within 1 year Member ifrs-full:NotLaterThanOneYearMember
933 1-2 Years Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
934 2-5 years Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
935 After 5 years Member ifrs-full:LaterThanFiveYearsAndNotLaterThanTenYearsMember
936 Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskLineItems
937 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
938 Loans payable Concept (Monetary) As Of Credit ifrs-full:Borrowings
939 Interest on loans payable Concept (Monetary) As Of Credit ifrs-full:InterestPayable
940 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
941 Total Commitments Concept (Monetary) As Of Credit ifrs-full:CapitalCommitments
942 096 - Disclosure - Financial instruments and financial risk management (Details 5) Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagementDetails5
943 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
944 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
945 Risks [member] Member ifrs-full:TypesOfRisksMember
946 Credit risk Member ifrs-full:CreditRiskMember
947 Disclosure of risk management strategy related to hedge accounting [line items] LineItems ifrs-full:DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingLineItems
948 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
949 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
950 Total Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
951 097 - Disclosure - Financial instruments and financial risk management (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagementDetailTextuals
952 Implied Table Table

*

*

 implied:Table
953 Disclosure of detailed information about financial instruments [abstract] Abstract ifrs-full:DisclosureOfFinancialInstrumentsAbstract
954 Percentage of appreciation in Canadian dollar exchange rate against US dollar Concept (Percent) As Of smt:PercentageOfAppreciationForeignExchangeRateTranslation
955 Percentage of appreciation in US dollar exchange rate against Peruvian Nuevo Soles and Mexican Peso Concept (Percent) As Of smt:PercentageOfAppreciationInForeignExchangeRateTranslationInOtherThanFunctionalCurrency
956 Net foreign exchange gain Concept (Monetary) For Period Credit ifrs-full:NetForeignExchangeGain
957 Net foreign exchange loss Concept (Monetary) For Period Debit ifrs-full:NetForeignExchangeLoss
958 098 - Disclosure - Financial instruments and financial risk management (Detail Textuals 1) Network

*

*

 http://www.sierrametals.com/role/FinancialInstrumentsAndFinancialRiskManagementDetailTextuals1
959 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
960 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
961 Risks [member] Member ifrs-full:TypesOfRisksMember
962 Interest rate risk Member ifrs-full:InterestRateRiskMember
963 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
964 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
965 Peru Member currency:PEN
966 Mexico Member currency:MXN
967 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
968 Weighted average interest rate for loans and notes payable Concept (Percent) As Of smt:WeightedAverageInterestRateForLoansAndNotesPayable
969 Variable in Interest rate Concept (Percent) As Of smt:IncreaseDecreaseInInterestRate
970 Increase (Decrease) in Net Loss Concept (Monetary) For Period Debit smt:IncreaseDecreaseInNetLoss
971 099 - Disclosure - Capital management (Details) Network

*

*

 http://www.sierrametals.com/role/CapitalmanagementDetails
972 Implied Table Table

*

*

 implied:Table
973 Disclosure of objectives, policies and processes for managing capital [abstract] Abstract ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalAbstract
974 Equity attributable to owners of the Company Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
975 Loans payable Concept (Monetary) As Of Credit ifrs-full:Borrowings
976 Capital including cash and cash equivalents Concept (Monetary) As Of Credit smt:CapitalIncludingCashAndCashEquivalents
977 Less: Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
978 Capital Concept (Monetary) As Of Credit smt:CapitalRequirements
979 100 - Disclosure - Related party transactions (Details) Network

*

*

 http://www.sierrametals.com/role/RelatedpartytransactionsDetails
980 Implied Table Table

*

*

 implied:Table
981 Related party transactions [abstract] Abstract ifrs-full:RelatedPartyTransactionsAbstract
982 Salaries and other short term employment benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
983 Share-based payments Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
984 Total compensation Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
985 101 - Disclosure - Related party transactions (Details Textual) Network

*

*

 http://www.sierrametals.com/role/RelatedPartyTransactionsDetailsTextual
986 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
987 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
988 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
989 Common directors or officers Member ifrs-full:KeyManagementPersonnelOfEntityOrParentMember
990 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
991 Consulting fees Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
992 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:AmountsPayableRelatedPartyTransactions
993 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:AmountsReceivableRelatedPartyTransactions
994 102 - Disclosure - Supplemental cash flow information (Details) Network

*

*

 http://www.sierrametals.com/role/SupplementalcashflowinformationDetails
995 Implied Table Table

*

*

 implied:Table
996 Disclosure Of Supplemental Cash Flow Information [Abstract] Abstract smt:DisclosureOfSupplementalCashFlowInformationAbstract
997 Trade and other receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables
998 Financial and other assets Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherMovementsFinancialAssets
999 Income tax receivable Concept (Monetary) For Period Debit smt:IncreaseDecreaseThroughIncomeTaxReceivable
1000 Inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
1001 Accounts payable and accrued liabilities Concept (Monetary) For Period Credit smt:IncreaseDecreaseThroughAccountsPayableAndAccruedLiabilities
1002 Income taxes payable Concept (Monetary) For Period Credit smt:IncreaseDecreaseThroughIncomeTaxPayable
1003 Other liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherLiabilities
1004 Total Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
1005 103 - Disclosure - Revenues from mining operations (Details) Network

*

*

 http://www.sierrametals.com/role/RevenuesfromminingoperationsDetails
1006 Implied Table Table

*

*

 implied:Table
1007 Revenues From Mining Operations [Abstract] Abstract smt:RevenuesFromMiningOperationsAbstract
1008 Revenues from contracts with customers Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
1009 Provisional pricing adjustments on concentrate sales Concept (Monetary) For Period Credit smt:ProvisionalPricingAdjustmentsOnConcentrateSales
1010 Total revenues Concept (Monetary) For Period Credit ifrs-full:Revenue
1011 104 - Disclosure - Revenues from mining operations (Details 1) Network

*

*

 http://www.sierrametals.com/role/RevenuesfromminingoperationsDetails1
1012 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

 ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
1013 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
1014 Products and services [member] Member ifrs-full:ProductsAndServicesMember
1015 Sales revenue from silver Member smt:SalesRevenueFromSilverMember
1016 Sales revenue from copper Member smt:SalesRevenueFromCopperMember
1017 Sales revenue from lead Member smt:SalesRevenueFromLeadMember
1018 Sales revenue from zinc Member smt:SalesRevenueFromZincMember
1019 Sales revenue from gold Member smt:SalesRevenueFromGoldMember
1020 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
1021 Revenues from contracts with customers Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
1022 105 - Disclosure - Contingencies (Details Textual) Network

*

*

 http://www.sierrametals.com/role/ContingenciesDetailsTextual
1023 Disclosure of contingent liabilities [table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
1024 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1025 Counterparties [member] Member ifrs-full:CounterpartiesMember
1026 Polo y Ron Minerals, S.A. de C.V. Member smt:PoloYRonMineralsSADeCVMember
1027 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
1028 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
1029 Legal proceedings contingent liability Member ifrs-full:LegalProceedingsContingentLiabilityMember
1030 Disclosure of contingent liabilities [line items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
1031 Number of mining concessions Concept (Integer) For Period smt:NumberOfMiningConcessions
1032 Amount recognised as expenses from arrangement involving legal matter Concept (Monetary) For Period Debit smt:AmountRecognisedAsExpensesFromArrangementInvolvingLegalMatter
1033 106 - Disclosure - Distribution of Cautivo Mining Inc. Shares (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/DistributionOfCautivoMiningIncSharesDetailTextuals
1034 Disclosure Of Spin Off Transaction [Table] Table

*

*

 smt:DisclosureOfSpinOffTransactionTable
1035 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1036 Counterparties [member] Member ifrs-full:CounterpartiesMember
1037 Cautivo Mining Inc Member smt:CautivoMiningIncMember
1038 Types Of Restructuring Axis Axis smt:TypesOfRestructuringAxis
1039 Types Of Restructuring [Domain] Member smt:TypesOfRestructuringDomain
1040 Spinoff Member smt:RestructuringBySpinoffMember
1041 Disclosure Of Spin Off Transaction [Line Items] LineItems smt:DisclosureOfSpinOffTransactionLineItems
1042 Number of Cautivo shares as distribution to holders of Sierra Concept (Shares) For Period smt:NumberOfSharesOfDisposalGroupClassifiedAsHeldForDistributionToOwners
1043 Percentage of ownership interest by parent Concept (Percent) For Period smt:PercentageOfOwnershipInterestByParent
1044 Reduced percentage of ownership interest by parent Concept (Percent) For Period smt:ReducedPercentageOfOwnershipInterestByParent
1045 Number of rights received pursuant to the Rights Offering Concept (Shares) For Period smt:NumberOfRightsReceivedAsDistribution
1046 Number of rights received for every Sierra common share held Concept (Pure) For Period smt:RightsRatio
1047 Share price of subscribed common share for every whole right held Concept (Share) For Period smt:SharePriceOfSubscribedCommonShareForEveryWholeRightHeld
1048 Loss on spin out of Plexmar net assets Concept (Monetary) For Period Debit smt:LossOnSpinOutOfNetAssets
1049 Distribution of capital of Plexmar net assets Concept (Monetary) For Period Debit smt:DistributionOfCapitalOfSpinoffNetAssets
1050 107 - Disclosure - Subsequent Events (Detail Textuals) Network

*

*

 http://www.sierrametals.com/role/SubsequentEventsDetailTextuals
1051 Disclosure of non-adjusting events after reporting period [table] Table

*

*

 ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
1052 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1053 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
1054 Purchase of Royalty Agreement Member smt:PurchaseOfRoyaltyAgreementMember
1055 Closing of New Senior Secured US$100 Million Corporate Credit Facility Member smt:ClosingOfNewSeniorSecuredCorporateCreditFacilityMember
1056 Repayment of FIFOMI Loan Member smt:RepaymentOfFifomiLoanMember
1057 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1058 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1059 Cusi Property Member smt:CusiPropertyMember
1060 Banco de Credito de Peru Member smt:BancoDeCreditoDePeruMember
1061 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1062 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1063 Mexico Member country:MX
1064 Disclosure of non-adjusting events after reporting period [line items] LineItems ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
1065 Refinancing of debt facility Concept (Monetary) As Of Credit smt:RefinancingOfDebtFacility
1066 Payments for debt Concept (Monetary) For Period Credit smt:PaymentsForDebt

*

*