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Other asset - Summary of detailed information about other asset (Detail) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Nov. 30, 2022 | Nov. 30, 2023 | Nov. 30, 2021
Cost |  |  |
Ending balance | $ 19,530 | $ 19,530 | $ 19,530
Accumulated amortization |  |  |
Beginning balance | 17,089 |  |
Amortization | 2,441 |  |
Ending balance | 19,530 |  |
Net carrying amounts | $ 0 | $ 0 |

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

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- Definition Accumulated Amortization On Other Non Current Assets. + References No definition available. + Details
Name: | thtx_AccumulatedAmortizationOnOtherNonCurrentAssets
Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amortization Of Other Non Current Assets. + References No definition available. + Details
Name: | thtx_AmortizationOfOtherNonCurrentAssets
Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Net carrying amount. + References No definition available. + Details
Name: | thtx_NetCarryingAmount
Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Other Assets non current at cost. + References No definition available. + Details
Name: | thtx_OtherAssetsNonCurrentAtCost
Namespace Prefix: | thtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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