XML 136 R99.htm IDEA: XBRL DOCUMENT
v3.23.1

GENERAL AND ADMINISTRATION (Schedule of General And Administrative Expenses) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
GENERAL AND ADMINISTRATION [abstract] |  |
General and administration | $ 50,191 | $ 39,386
Workers' participation | 954 | 1,813
General and administrative subtotal | 51,145 | 41,199
Share-based payments | 10,311 | 4,161
Total general and administrative expense | $ 61,456 | $ 45,360

X
- Definition The amount of general and administrative expense excluding sharebased payments. + References No definition available. + Details
Name: | fsm_GeneralAndAdministrativeExpenseExcludingSharebasedPayments
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of general and administrative expense excluding workers' participation. + References No definition available. + Details
Name: | fsm_GeneralAndAdministrativeExpenseExcludingWorkersParticipation
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Selling, General and Administrative [abstract]. + References No definition available. + Details
Name: | fsm_SellingGeneralAndAdministrativeAbstract
Namespace Prefix: | fsm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Workers participation expense. + References No definition available. + Details
Name: | fsm_WorkersParticipationExpense
Namespace Prefix: | fsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense from share-based payment transactions with employees. [Refer: Expense from share-based payment transactions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense relating to general and administrative activities of the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_GeneralAndAdministrativeExpense
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration