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Note 24 - Management of Capital (Tables) | 12 Months Ended
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Dec. 31, 2024
Statement Line Items [Line Items] |
Disclosure of capital management [text block] |
|  | Years ended December 31 |
|  | 2024 |  |  | 2023 |
Equity |  | $ | 78,203 |  |  | $ | 182,874 |
Less: cash |  |  | (4,912 | ) |  |  | (7,313 | )
|  | $ | 73,291 |  |  | $ | 175,561 |

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- Definition Tabular disclosure of the components for capital management. + References No definition available. + Details
Name: | fury_DisclosureOfCapitalManagementTextBlock
Namespace Prefix: | fury_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | fury_Statement1LineItems
Namespace Prefix: | fury_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration