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Related parties - Additional Information (Detail) | Nov. 30, 2023 | Nov. 30, 2022
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Disclosure of transactions between related parties [abstract] |  |
Related party percentage of voting shares held | 1.10% | 0.80%

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

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- Definition Related party percentage of voting shares held. + References No definition available. + Details
Name: | thtx_RelatedPartyPercentageOfVotingRightsHeld
Namespace Prefix: | thtx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant