XML 128 R101.htm IDEA: XBRL DOCUMENT
v3.21.1

Share Based Payments (Schedule of Outstanding Units Activity) (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 EquityInstruments | Sep. 30, 2020 USD ($) EquityInstruments | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) EquityInstruments
Deferred Share Units [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Outstanding, other than options, beginning |  | 961,871 | 961,871 | 850,067
Granted, other units |  |  | 162,648 | 111,804
Outstanding, other than options, ending |  |  | 1,124,519 | 961,871
Outstanding, beginning balance, fair value |  | $ 3,918,000 | $ 3,918,000 | $ 3,116,000
Fair Value, granted, other units |  |  | 383,000 | 455,000
Change in fair value, other units |  |  | 4,938,000 | 347,000
Outstanding, ending balance, fair value |  |  | $ 9,239,000 | $ 3,918,000
Cash Settled, Restricted Share Units [Member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Outstanding, other than options, beginning |  | 392,435 | 392,435 | 659,385
Granted, other units |  |  | 1,056,207 | 139,661
Paid, other units |  |  | (81,152) | (406,611)
Outstanding, other than options, ending |  |  | 1,367,490 | 392,435
Outstanding, beginning balance, fair value |  | $ 1,157,000 | $ 1,157,000 | $ 2,057,000
Fair Value, granted, other units |  |  | 2,489,000 | 506,000
Fair Value, Paid in Cash, other units |  |  | (257,000) | (1,466,000)
Change in fair value, other units |  |  | 2,003,000 | 60,000
Outstanding, ending balance, fair value |  |  | 5,392,000 | $ 1,157,000
Fair value, Current portion |  |  | (3,128,000) |
Fair value, Non-current portion |  |  | $ 2,264,000 |
Equity Settled, Restricted Share Units [Member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Outstanding, other than options, beginning |  | 1,166,912 | 1,166,912 | 734,631
Granted, other units |  |  | 815,220 | 633,914
Paid, other units |  |  | (448,766) | (201,633)
Outstanding, other than options, ending |  |  | 1,533,366 | 1,166,912
Performance Share Units |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Granted, other units | EquityInstruments | 0 | 0 |  | 422,609
Equity Settled, Performance Share Units [Member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Outstanding, other than options, beginning |  | 1,274,450 | 1,274,450 | 1,002,166
Granted, other units |  |  |  | 422,609
Paid, other units |  |  | (243,782) | (150,325)
Forfeited or cancelled, other units |  |  | (191,498) |
Outstanding, other than options, ending |  |  | 839,170 | 1,274,450

X
- Definition Fair value increase (decrease) in other units. + References No definition available. + Details
Name: | fsm_FairValueIncreaseDecreaseInOtherUnits
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of current portion of other equity instruments in share-based payment arrangement outstanding. + References No definition available. + Details
Name: | fsm_FairValueOfOtherEquityInstrumentsInShareBasedPaymentArrangementOutstandingCurrent
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value of non-current portion of other equity instruments in share-based payment arrangement outstanding. + References No definition available. + Details
Name: | fsm_FairValueOfOtherEquityInstrumentsInShareBasedPaymentArrangementOutstandingNonCurrent
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value of other equity instruments in sharebased payment arrangement granted. + References No definition available. + Details
Name: | fsm_FairValueOfOtherEquityInstrumentsInSharebasedPaymentArrangementGranted
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of other equity instruments in sharebased payment arrangement outstanding. + References No definition available. + Details
Name: | fsm_FairValueOfOtherEquityInstrumentsInSharebasedPaymentArrangementOutstanding
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value of other equity instruments in sharebased payment arrangement paid in cash. + References No definition available. + Details
Name: | fsm_FairValueOfOtherEquityInstrumentsInSharebasedPaymentArrangementPaidInCash
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of other equity instruments (ie other than share options) forfeited in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=fsm_DeferredShareUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=fsm_CashSettledRestrictedShareUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=fsm_EquitySettledRestrictedShareUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=fsm_PerformanceShareUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=fsm_EquitySettledPerformanceShareUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |