XML 62 R52.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Secured Note Liability (Details) - Schedule of inputs and assumptions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 24, 2022 | Sep. 30, 2022
Schedule Of Inputs And Assumptions Abstract |  |  |
Weighted Average Life | [1] | 23 years 6 months | 44 years 8 months 12 days
Risk-free rate |  | 2.50% | 3.20%
Credit spread |  | 5.20% | 6.40%
Volatility |  | 60.00% | 60.00%
Silver royalty discount factor |  | 7.10% | 8.60%
[1] | Weighted average life reflects the revised silver forecast production schedule contained in the recently filed KSM updated Preliminary Feasibility Study (PFS) and Preliminary Economic Assessment (PEA) for the KSM project.

X
- Definition The weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45_d&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | sa_CreditSpread
Namespace Prefix: | sa_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time. + References No definition available. + Details
Name: | sa_DescriptionOfExpectedVolatilityShareOptionsGrantedOne
Namespace Prefix: | sa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Risk free interest rate, share options granted. + References No definition available. + Details
Name: | sa_DescriptionOfRiskFreeInterestRateShareOptionsGranteds
Namespace Prefix: | sa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- References No definition available. + Details
Name: | sa_SilverRoyaltyDiscountFactor
Namespace Prefix: | sa_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration