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v3.26.1

Share Capital - Schedule of Pre-funded Warrants Activity (Parenthetical) (Details) - shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Share Capital [Line Items] |  |  |  |
Common stock issued for pre-funded warrants |  |  | 118,980 |
Exercise of pre-funded warrants | 0 | 0 | 118,982 | (0)

X
- Definition Common stock issued for pre-funded warrants. + References No definition available. + Details
Name: | xene_CommonStockIssuedForPreFundedWarrants
Namespace Prefix: | xene_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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