SEABRIDGE GOLD INC (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

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70 Basic and diluted net loss per common share Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
71 Basic and diluted weighted average number of common shares outstanding Concept (Shares) For Period ifrs-full:WeightedAverageShares
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103 Deferred tax on share issuance costs Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
104 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
105 Net loss for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
106 Balance, end of period Concept (Monetary) As Of Credit ifrs-full:Equity
107 Shares, end of period Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
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113 Adjustment for non-cash items: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
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115 Provision for environmental rehabilitation Concept (Monetary) For Period Debit SA:ProvisionForEnvironmentalRehabilitation
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144 Net cash from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
145 Net (decrease) increase in cash and cash equivalents during the year Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
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283 00000034 - Disclosure - Significant Accounting Policies (Details) Network

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284 Implied Table Table

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285 Significant Accounting Policies [Abstract] Abstract SA:SignificantAccountingPoliciesAbstract
286 Significant Accounting Policies (Textual) Abstract SA:SignificantAccountingPoliciesTextualAbstract
287 New and amended standards and interpretations issued and effective, description Concept (Text/String) For Period ifrs-full:ExplanationOfMainClassesOfAssetsAffectedByImpairmentLossesOrReversalsOfImpairmentLosses
288 Recent accounting pronouncements issued but not yet effective, description Concept (Text/String) For Period ifrs-full:ExplanationOfNotAppliedNewStandardsOrInterpretations
289 00000035 - Disclosure - Cash and Cash Equivalents and Short-term Deposits (Details) Network

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 http://seabridgegold.net/role/CashAndCashEquivalentsAndShort-termDepositsDetails
290 Implied Table Table

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292 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
293 Short-term deposits Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsNotClassifiedAsCashEquivalents
294 Total Concept (Monetary) As Of Debit SA:CashAndCashEquivalentsAndShortTermDeposits
295 00000036 - Disclosure - Amounts Receivable and Prepaid Expenses (Details) Network

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296 Implied Table Table

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297 Amounts Receivable and Prepaid Expenses [Abstract] Abstract SA:AmountsReceivableAndPrepaidExpensesAbstract
298 HST Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
299 Prepaid expenses and other receivables Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
300 Total Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherReceivables
301 00000037 - Disclosure - Investments (Details) Network

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306 Investment in associate [Member] Member SA:InvestmentInAssociateMember
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309 Dispositions Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod
310 Fair value through other comprehensive loss Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty
311 Gain on disposition Concept (Monetary) For Period Credit SA:GainsLossesOnDispositionOfInvestments
312 Loss of associates Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
313 Impairment Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
314 Additions Concept (Monetary) For Period Credit ifrs-full:PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
315 Other comprehensive loss Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
316 Ending Balance Concept (Monetary) As Of Debit ifrs-full:CurrentInvestments
317 00000038 - Disclosure - Investments (Details Texual) Network

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318 DisclosureOfInvestmentsTable [Table] Table

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320 Assets [member] Member ifrs-full:ClassesOfAssetsMember
321 Mineral Properties [Member] Member ifrs-full:ExplorationAndEvaluationAssetsMember
322 Types of investment property [axis] Axis ifrs-full:TypesOfInvestmentPropertyAxis
323 Investment property [member] Member ifrs-full:InvestmentPropertyMember
324 Paramount Gold Nevada Corp [Member] Member SA:ParamountGoldNevadaCorpMember
325 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
326 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
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328 Classes of ordinary shares [axis] Axis ifrs-full:ClassesOfOrdinarySharesAxis
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330 Common Shares [Member] Member SA:CommonSharesMember
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335 Investments (Textual) Concept (Text/String) For Period SA:InvestmentsTexualAbstract
336 Financial assets are recorded at fair value Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
337 Common shares had a fair value Concept (Monetary) For Period Credit SA:CommonSharesOfFairValue
338 Investments impairment amount Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossOnFinancialAssets
339 Interest, percentage Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
340 Net loss Concept (Monetary) For Period Credit us-gaap:ProfitLoss
341 Impairment of investments Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
342 Carrying value of investment Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
343 Purchased of shares Concept (Shares) For Period SA:PurchasesOfSharesRelatedPartyTransactions
344 Purchased of stock Concept (Monetary) For Period Debit ifrs-full:PurchasesOfGoodsRelatedPartyTransactions
345 Description of transactions with related party Concept (Text/String) For Period ifrs-full:DescriptionOfTransactionsWithRelatedParty
346 Gain of investments Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfInvestmentProperties
347 00000039 - Disclosure - Mineral Interests (Details) Network

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 SA:DisclosureOfMineralInterestTable
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352 Courageous Lake [Member] Member SA:CourageousLakeMember
353 Iskut [Member] Member SA:IskutMember
354 Snowstorm [Member] Member SA:SnowstormMember
355 Grassy Mountain [Member] Member SA:GrassyMountainMember
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358 Expenditures / Acquisitions Concept (Monetary) For Period Credit ifrs-full:PurchaseOfMiningAssets
359 Recoveries Concept (Monetary) For Period ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossInvestmentProperty
360 Ending Balance Concept (Monetary) As Of Debit ifrs-full:MiningAssets
361 00000040 - Disclosure - Mineral Interests (Details Textual) Network

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 http://seabridgegold.net/role/MineralInterestsDetailsTextual
362 Statement Table [Table] Table

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 SA:IfrsStatementTable
363 Types of investment property [axis] Axis ifrs-full:TypesOfInvestmentPropertyAxis
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366 Quartz Mountain [Member] Member SA:QuartzMountainMember
367 Courageous Lake [Member] Member SA:CourageousLakeMember
368 Iskut Member SA:IskutMember
369 Snowstorm [Member] Member SA:SnowstormMember
370 Other Nevada Projects [Member] Member SA:OtherNevadaProjectsMember
371 Grassy Mountain [Member] Member SA:GrassyMountainMember
372 Red Mountain [Member] Member SA:RedMountainMember
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374 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
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376 SnipGold Corp [Member] Member SA:SnipGoldCorpMember
377 KSP Project [Member] Member SA:KspProjectMember
378 Colorado Resources Ltd. [Member] Member SA:ColoradoResourcesLtdMember
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380 Mineral Interests (Textual) Abstract SA:MineralInterestsTextualAbstract
381 Purchased of interest, percentage Concept (Percent) For Period SA:PercentageOfPurchasedInInterest
382 Royalty interest, percentage Concept (Percent) For Period SA:PercentageOfRoyaltyInterest
383 Royalty payments Concept (Monetary) For Period Credit SA:PaymentsForRoyalty
384 Purchase of net smelter royalty interest price Concept (Monetary) For Period Credit SA:PurchaseOfNetSmelterRoyaltyInterestPrice
385 Internal rate of return after tax and financing costs, percentage Concept (Percent) For Period SA:PercentageOfInternalRateOfReturnAfterTaxAndFinancingCosts
386 Cash Concept (Monetary) As Of Credit ifrs-full:CashTransferred
387 Shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
388 Pay advance royalties Concept (Monetary) As Of Debit SA:PayAdvanceRoyalties
389 Commencing on closing of the agreement Concept (xbrli:durationItemType) For Period SA:CommencingOnClosingOfAgreement
390 Acquired claims, percentage Concept (Percent) For Period SA:PercentageOfAcquiredClaims
391 Agreement, description Concept (Text/String) For Period SA:DescriptionOfAgreement
392 Acquiree, description Concept (Text/String) For Period ifrs-full:DescriptionOfAcquiree
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394 Net smelter return, percentage Concept (Percent) For Period SA:NetSmelterReturnPercentage
395 Repurchase of assets Concept (Monetary) As Of Debit SA:RepurchaseOfAssets
396 Payment of interest Concept (Monetary) For Period Credit SA:PaymentOfInterestAmount
397 Fair value, per share Concept (Share) For Period SA:FairValuePerShare
398 Acquisition date, description Concept (Text/String) For Period SA:DescriptionOfAcquisitionDate
399 Deposits Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
400 00000041 - Disclosure - Accounts Payable and Accrued Liabilities (Details) Network

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401 Implied Table Table

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402 Accounts Payable And Accrued Liabilities [Abstract] Abstract SA:AccountsPayableAndAccruedLiabilitiesAbstract
403 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
404 Trade and other payables due to related parties Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
405 Non-trade payables and accrued expenses Concept (Monetary) As Of Credit ifrs-full:OtherPayables
406 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
407 00000042 - Disclosure - Accounts Payable and Accrued Liabilities (Details Textual) Network

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408 Implied Table Table

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410 Accounts Payable and Accrued Liabilities (Textual) Abstract SA:AccountsPayableAndAccruedLiabilitiesTextualAbstract
411 Accounts payable and accrued liabilities, description Concept (Text/String) For Period SA:AccountsPayableAndAccruedLiabilitiesDescription
412 00000043 - Disclosure - Provision for Reclamation Liabilities (Details) Network

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413 Implied Table Table

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416 Revised Johnny Mountain Mine closure Concept (Monetary) For Period Credit SA:RevisedJohnnyMountainMineClosure
417 Derecognition of Red Mountain Concept (Monetary) For Period Debit SA:DerecognitionAdjustmentsForProvisions
418 Disbursements Concept (Monetary) For Period Debit SA:Disbursements
419 Accretion Concept (Monetary) For Period Credit SA:AccretionOfProvisions
420 Ending balance Concept (Monetary) As Of Credit SA:ProvisionForReclamationLiabilities
421 Provision for reclamation liabilities - current Concept (Monetary) As Of Credit SA:ProvisionForReclamationLiabilitiesCurrent
422 Provision for reclamation liabilities - long-term Concept (Monetary) As Of Credit SA:ProvisionForReclamationLiabilitiesNoncurrent
423 Total Concept (Monetary) As Of Credit SA:ProvisionForReclamationLiabilities
424 00000044 - Disclosure - Provision for Reclamation Liabilities (Details Textual) Network

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425 Implied Table Table

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427 Provision for Reclamation Liabilities (Textual) Abstract SA:ProvisionForReclamationLiabilitiesTextualAbstract
428 Reclamation obligation, description Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfObligationOtherProvisions
429 Updated reclamation and closure plan, description Concept (Text/String) For Period SA:DescriptionOfUpdatedReclamationAndClosurePlan
430 00000045 - Disclosure - Shareholders’ Equity (Details 1) Network

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 http://seabridgegold.net/role/ShareholdersEquityDetails1
431 Implied Table Table

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433 Stock options outstanding, beginning Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
434 Stock options, granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
435 Stock options, exercised Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
436 Stock options, expired Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
437 Stock options outstanding, ending Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
438 Stock options exercisable, ending Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
439 Stock options, weighted average exercise price, beginning Concept (Share) As Of SA:WeightedAverageExercisePriceOfShareOptionsOutstanding
440 Stock options, weighted average exercise price, granted Concept (Share) For Period SA:WeightedAverageExercisePriceOfShareOptionsGranted
441 Stock options, weighted average exercise price, exercised Concept (Share) For Period SA:WeightedAverageExercisePriceOfShareOptionsExercised
442 Stock options, weighted average exercise price, expired Concept (Share) For Period SA:WeightedAverageExercisePriceOfShareOptionsExpired
443 Stock options, weighted average exercise price, ending Concept (Share) As Of SA:WeightedAverageExercisePriceOfShareOptionsOutstanding
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445 Amortized value of options, granted Concept (Monetary) For Period Credit SA:AmortizedValueOfShareOptionsGrantedInSharebasedPaymentArrangement
446 Amortized value of options, exercised Concept (Monetary) For Period Debit SA:AmortizedValueOfShareOptionsExercisedInSharebasedPaymentArrangement
447 Amortized value of options, expired Concept (Monetary) For Period Debit SA:AmortizedValueOfShareOptionsExpiredInSharebasedPaymentArrangement
448 Amortized value of stock-based compensation Concept (Monetary) For Period Credit SA:AmortizedValueOfShareOptionsGrantedInPriorYearsInSharebasedPaymentArrangement
449 Amortized value of options, ending Concept (Monetary) As Of Credit SA:AmortizedValueOfShareOptionsOutstandingInSharebasedPaymentArrangement
450 RSUs outstanding, beginning Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
451 RSUs, granted Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
452 RSUs, vested Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
453 RSUs, expired Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement
454 RSUs outstanding, ending Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
455 Amortized value of RSUs, beginning Concept (Monetary) As Of Credit SA:AmortizedValueOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
456 Amortized value of RSUs, granted Concept (Monetary) For Period Credit SA:AmortizedValueOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement
457 Amortized value of RSUs, vested Concept (Monetary) For Period Credit SA:AmortizedValueOfOtherEquityInstrumentsVestedInSharebasedPaymentArrangement
458 Amortized value of RSUs, expired Concept (Monetary) For Period Debit SA:AmortizedValueOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement
459 Amortized value of RSUs, stock based compensation granted in prior years Concept (Monetary) For Period Credit SA:AmortizedValueOfOtherEquityInvestmentsGrantedInPriorYearsInSharebasedPaymentArrangement
460 Amortized value of RSUs, ending Concept (Monetary) As Of Credit SA:AmortizedValueOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
461 Stock-based compensation, beginning Concept (Monetary) As Of Credit ifrs-full:ReserveOfSharebasedPayments
462 Stock-based compensation, granted Concept (Monetary) For Period Credit SA:StockbasedCompensationGranted
463 Stock-based compensation, exercised or vested Concept (Monetary) For Period Debit SA:StockbasedCompensationExercisedOrVested
464 Stock-based compensation, expired Concept (Monetary) For Period Debit SA:StockbasedCompensationExpired
465 Stock-based compensation, stock based compensation granted in prior years Concept (Monetary) For Period Credit SA:StockbasedCompensationGrantedInPriorYears
466 Stock-based compensation, ending Concept (Monetary) As Of Credit ifrs-full:ReserveOfSharebasedPayments
467 00000046 - Disclosure - Shareholders’ Equity (Details 2) Network

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468 Disclosure of range of exercise prices of outstanding share options [table] Table

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 ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable
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470 Ranges [member] Member ifrs-full:RangesMember
471 Minimum Member SA:MinimumRangeMember
472 Maximum Member SA:MaximumRangeMember
473 Ranges of exercise prices for outstanding share options [axis] Axis ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
474 Ranges of exercise prices for outstanding share options [member] Member ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
475 11.13 [Member] Member SA:ExercisePrice4Member
476 13.52 [Member] Member SA:ExercisePrice5Member
477 17.16 [Member] Member SA:ExercisePrice6Member
478 17.14 [Member] Member SA:ExercisePrice7Member
479 10.45 [Member] Member SA:ExercisePrice8Member
480 13.14 [Member] Member SA:ExercisePrice9Member
481 16.94 [Member] Member SA:ExercisePrice10Member
482 15.46 [Member] Member SA:ExercisePrice11Member
483 6.30 [Member] Member SA:ExercisePrice12Member
484 $6.30 Member SA:ExercisePrice13Member
485 10.36 [Member] Member SA:ExercisePrice1Member
486 9.72 [Member] Member SA:ExercisePrice2Member
487 9.00 [Member] Member SA:ExercisePrice3Member
488 Disclosure of range of exercise prices of outstanding share options [line items] LineItems ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems
489 Options outstanding Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
490 Remaining contractual life Concept (xbrli:durationItemType) For Period SA:WeightedAverageRemainingContractualLifeOfOutstandingShareOption
491 Options Exercisable Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
492 00000047 - Disclosure - Shareholders’ Equity (Details 3) Network

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 SA:DisclosureOfOptionAssumptionsTable
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500 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
501 Risk-free rate of return Concept (Percent) For Period ifrs-full:DescriptionOfRiskFreeInterestRateShareOptionsGranted
502 Expected life of options Concept (xbrli:durationItemType) For Period SA:ExpectedLifeOfOptions
503 00000052 - Disclosure - Related Party Disclosures (Details Textual) Network

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506 Related Party Disclosures (Textual) Abstract SA:RelatedPartyDisclosuresTextualAbstract
507 Legal services Concept (Monetary) For Period Debit ifrs-full:ServicesExpense
508 00000053 - Disclosure - Income Taxes (Details) Network

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 http://seabridgegold.net/role/IncomeTaxesDetails
509 Implied Table Table

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512 Deferred tax expense Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
513 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
514 Share issuance costs Concept (Monetary) For Period Debit SA:ShareIssuanceCosts
515 00000054 - Disclosure - Income Taxes (Details 1) Network

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516 Implied Table Table

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522 Difference in foreign tax rates Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
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527 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
528 00000055 - Disclosure - Income Taxes (Details 2) Network

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 SA:DisclosureOfDeferredTaxAssetsAndLiabilitiesTable
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534 Financing costs [Member] Member SA:FinancingCostsMember
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540 Net deferred tax assets/liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
541 00000056 - Disclosure - Income Taxes (Details 3) Network

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 http://seabridgegold.net/role/IncomeTaxesDetails3
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 SA:DisclosureOfUnrecognisedDeferredTaxAssetsTable
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548 Foreign tax credits [Member] Member SA:ForeignTaxCreditsMember
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553 00000058 - Disclosure - Income Taxes (Details Textual) Network

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554 Implied Table Table

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555 Income Taxes [Abstract] Abstract SA:IncomeTaxesAbstract
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558 Income tax rates Concept (Percent) For Period ifrs-full:ApplicableTaxRate
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560 Potential additional tax Concept (Monetary) For Period Debit SA:PotentialAdditionalTax
561 Potential indemnification to the investors Concept (Monetary) For Period Debit SA:PotentialIndemnificationToInvestors

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