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v3.26.1

Share Capital - Schedule of Pre-funded Warrants Activity (Details) - shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Share Capital [Line Items] |  |  |  |
Outstanding, beginning | 2,931,293 | 2,173,081 | 2,173,081 | 2,173,081
Issued | 0 | 0 | 877,194 | 0
Exercised | 0 | 0 | (118,982) | 0
Outstanding, ending | 2,931,293 | 2,173,081 | 2,931,293 | 2,173,081

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of warrants exercised. + References No definition available. + Details
Name: | xene_NumberOfWarrantsExercised
Namespace Prefix: | xene_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants issued. + References No definition available. + Details
Name: | xene_NumberOfWarrantsIssued
Namespace Prefix: | xene_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share capital. + References No definition available. + Details
Name: | xene_ShareCapitalLineItems
Namespace Prefix: | xene_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration