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Supplemental cash flow disclosures - Summary of supplemental cash flow (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Nov. 30, 2023 | Nov. 30, 2022 | Nov. 30, 2021
Supplemental cash flow disclosures [abstract] |  |  |
Deferred financing costs included in accounts payable and accrued liabilities | $ 0 | $ 0 | $ 174
Additions to property and equipment included in accounts payable and accrued liabilities | 0 | 156 | 0
Acquisition of derivative financial assets included in accounts payable and accrued liabilities | 0 | 104 | 0
Additions to intangible assets included in accounts payable and accrued liabilities | 0 | 2,832 | 0
Reclassification of other Deferred financing costs to deficit | 0 | 38 | 0
Share issue cost included in accounts payable and accrued liabilities | $ 505 | $ 37 | $ 0

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- Definition Acquisition of derivative financial assets included in accounts payable and accrued liabilities. + References No definition available. + Details
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- Definition Additions To intangibles included in accounts payable and accrued liabilities. + References No definition available. + Details
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Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
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- Definition Additions to property and equipment included in accounts payable and accrued liabilities. + References No definition available. + Details
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Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
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- Definition Deferred financing costs included in accounts payable and accrued liabilities. + References No definition available. + Details
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Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
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- Definition Reclassification of other deferred financing costs to deficit. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Share issue cost included in accounts payable and accrued liabilities + References No definition available. + Details
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Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
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- Definition Supplemental Cash Flow Disclosures. + References No definition available. + Details
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Period Type: | duration