XML 121 R94.htm IDEA: XBRL DOCUMENT
v3.21.1

Debt - Movement in debt (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about borrowings [line items] |  |
Balance at December 31, 2018 | $ 146,535 | $ 69,302
Proceeds from debentures |  | 46,000
Transaction costs on convertible debentures (note 17(b)) |  | (2,490)
Portion allocated to equity |  | (7,141)
Transaction costs allocated to equity |  | 389
Amortization of transaction costs , discount | 2,081 | 475
Drawdowns | 65,000 | 40,000
Repayments of borrowings | (55,000) |
Balance at December 31, 2019 | 158,616 | 146,535
Term Credit Facility [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Balance at December 31, 2018 | 109,430 | 69,302
Amortization of transaction costs , discount | 420 | 128
Drawdowns | 65,000 | 40,000
Repayments of borrowings | (55,000) |
Balance at December 31, 2019 | 119,850 | 109,430
Debentures [Member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Balance at December 31, 2018 | 37,105 |
Proceeds from debentures |  | 46,000
Transaction costs on convertible debentures (note 17(b)) |  | (2,490)
Portion allocated to equity |  | (7,141)
Transaction costs allocated to equity |  | 389
Amortization of transaction costs , discount | 1,661 | 347
Balance at December 31, 2019 | $ 38,766 | $ 37,105

X
- Definition Amount of convertible debt portion allocated to equity. + References No definition available. + Details
Name: | fsm_DebtInstrumentsConvertibleEquityComponent
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of convertible debt transaction costs allocated to equity. + References No definition available. + Details
Name: | fsm_DebtInstrumentsConvertibleTransactionCostEquityComponent
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase through amortization of transaction costs. + References No definition available. + Details
Name: | fsm_IncreaseThroughAmortizationOfTransactionCosts
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of non-current portion of non-current loans received during the period. + References No definition available. + Details
Name: | fsm_LongTermBorrowingsReceived
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for debt modifications costs. + References No definition available. + Details
Name: | fsm_PaymentsForDebtModificationsCosts
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Proceeds from convertible debenture. + References No definition available. + Details
Name: | fsm_ProceedsFromConvertibleDebenture
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_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The non-current portion of non-current loans received. [Refer: Loans received] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NoncurrentPortionOfNoncurrentLoansReceived
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 17 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_17_d&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=fsm_TermCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=fsm_DebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |