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Tax credits and grants receivable - Disclosure Details Of Tax Credits Roll Forward (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Nov. 30, 2023 | Nov. 30, 2022
Disclosure of Tax Credits and Grants Receivable |  |
Beginning balance | $ 299 | $ 441
Tax credits and grants recognized in net loss | 539 | 316
Tax credits and grants received | (324) | (442)
Effect of change in exchange rate | 10 | (16)
Ending balance | $ 524 | $ 299

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- Definition Disclosure of tax credits and grants receivable. + References No definition available. + Details
Name: | thtx_DisclosureOfTaxCreditsAndGrantsReceivableLineItems
Namespace Prefix: | thtx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Increase decrease through net exchange differences tax credits and grants receivable. + References No definition available. + Details
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Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Tax credits and grants receivable. + References No definition available. + Details
Name: | thtx_TaxCreditsAndGrantsReceivable
Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Tax credits and grants received. + References No definition available. + Details
Name: | thtx_TaxCreditsAndGrantsReceived
Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Tax credits and grants recognized in net profit or loss. + References No definition available. + Details
Name: | thtx_TaxCreditsAndGrantsRecognizedInNetProfitOrLoss
Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration