XML 56 R46.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Mineral Interests, Property and Equipment (Details) - Schedule of mineral interests, property and equipment - CAD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
KSM [Member] |  |  |  |
Additions |  |  |  |
Balance | $ 502,015 | [1],[2] | $ 444,167 | [3]
Mineral interests | 16,452 | [1],[2] | 27,607 | [3]
Construction in progress | 110,817 | [1],[2] | 27,061 | [3]
Property & equipment | 4,459 | [1],[2] | 3,080 | [3]
Right-of-use assets | 1,612 | [1],[2] | 100 | [3]
Total Additions | 133,340 | [1],[2] | 57,848 | [3]
Balance | 635,355 | [1],[2] | 502,015 | [3]
Courageous Lake [Member] |  |  |  |
Additions |  |  |  |
Balance | 77,176 |  | 76,522 |
Mineral interests | 522 |  | 654 |
Construction in progress |  |  |  |
Property & equipment |  |  |  |
Right-of-use assets |  |  |  |
Total Additions | 522 |  | 654 |
Balance | 77,698 |  | 77,176 |
Iskut [Member] |  |  |  |
Additions |  |  |  |
Balance | 41,779 |  | 37,949 |
Mineral interests | 6,387 |  | 3,830 |
Construction in progress |  |  |  |
Property & equipment |  |  |  |
Right-of-use assets |  |  |  |
Total Additions | 6,387 |  | 3,830 |
Balance | 48,166 |  | 41,779 |
Snowstorm [Member] |  |  |  |
Additions |  |  |  |
Balance | 31,471 |  | 24,924 |
Mineral interests | 2,632 |  | 6,547 |
Construction in progress |  |  |  |
Property & equipment |  |  |  |
Right-of-use assets |  |  |  |
Total Additions | 2,632 |  | 6,547 |
Balance | 34,103 |  | 31,471 |
3 Aces [Member] |  |  |  |
Additions |  |  |  |
Balance | 9,034 |  | 7,113 |
Mineral interests | 1,237 |  | 1,921 |
Construction in progress |  |  |  |
Property & equipment |  |  |  |
Right-of-use assets |  |  |  |
Total Additions | 1,237 |  | 1,921 |
Balance | 10,271 |  | 9,034 |
Grassy Mountain [Member] |  |  |  |
Additions |  |  |  |
Balance | 771 |  | 771 |
Mineral interests |  |  |  |
Construction in progress |  |  |  |
Property & equipment |  |  |  |
Right-of-use assets |  |  |  |
Total Additions |  |  |  |
Balance | 771 |  | 771 |
Corporate [Member] |  |  |  |
Additions |  |  |  |
Balance | 307 |  | 307 |
Mineral interests |  |  |  |
Construction in progress |  |  |  |
Property & equipment |  |  |  |
Right-of-use assets | 324 |  |  |
Total Additions | 324 |  |  |
Balance | 631 |  | 307 |
Total [Member] |  |  |  |
Additions |  |  |  |
Balance | 662,553 |  | 591,753 |
Mineral interests | 27,230 |  | 40,559 |
Construction in progress | 110,817 |  | 27,061 |
Property & equipment | 4,459 |  | 3,080 |
Right-of-use assets | 1,936 |  | 100 |
Total Additions | 144,442 |  | 70,800 |
Balance | $ 806,995 |  | $ 662,553 |
[1] | $6.8 million of costs related to the BC Hydro project (refer to Note 8) were reclassified from mineral interests to long-term receivables and other assets.
[2] | Construction in progress additions at KSM includes $9.8 million of capitalized borrowing costs.
[3] | $3.9 million of costs related to the BCMETC audit (refer to Note 8) were reclassified from mineral interests to amounts receivable.

X
- Definition The amount of additions to right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 53 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_h&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_AdditionsToRightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expenditure capitalised during the construction of non-current assets that are not yet available for use. [Refer: Non-current assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 37 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_37&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ConstructionInProgress
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of assets related to mining activities of the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 37 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_37&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_MiningAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_a&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_PropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_j&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_RightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | sa_Addition
Namespace Prefix: | sa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | sa_AdditionsAbstract
Namespace Prefix: | sa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Mineral interests. + References No definition available. + Details
Name: | sa_MineralInterests
Namespace Prefix: | sa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesAxis=sa_KsmMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesAxis=sa_CourageousLakeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesAxis=sa_IskutMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesAxis=sa_SnowstormMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesAxis=sa_ThreeAcesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesAxis=sa_GrassyMountainMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesAxis=sa_CorporateAndOthersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesAxis=sa_TotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |