XML 56 R44.htm IDEA: XBRL DOCUMENT
v3.25.3

License Agreement (Details) - Licensing Agreement - Norgine Ltd. $ in Thousands, € in Millions | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2025 USD ($) | Mar. 31, 2024 USD ($) | Mar. 17, 2024 USD ($) | Mar. 17, 2024 EUR (€)
License Agreement [Line items] |  |  |  |
License agreement funding received |  | $ 43,000 | $ 43,200 | € 40.0
License agreement funding, potential milestone payments |  | $ 230,000 | $ 230,000 | € 210.0
Incremental costs paid | $ 1,700 |  |  |
Incremental costs capitalized to other non-current assets | $ 743 |  |  |

X
- Definition Amount of incremental costs capitalized to other non-current assets as a part of the Company's license agreement. + References No definition available. + Details
Name: | fenc_IncrementalCostsCapitalizedToOtherNonCurrentAssets
Namespace Prefix: | fenc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of incremental costs paid as a part of the Company's license agreement. + References No definition available. + Details
Name: | fenc_IncrementalCostsPaid
Namespace Prefix: | fenc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of potential milestone funding available through license agreements. + References No definition available. + Details
Name: | fenc_LicenseAgreementFundingPotentialMilestonePayments
Namespace Prefix: | fenc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of funding received through license agreements. + References No definition available. + Details
Name: | fenc_LicenseAgreementFundingReceived
Namespace Prefix: | fenc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=fenc_ExclusiveLicensingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=fenc_NorgineLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |