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Personnel expenses - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2023	Nov. 30, 2022
Disclosure Of Personnel Expenses Explanatory [Abstract]
Amount of charges related to severance and other expenses	$ 1,963	$ 457

X

- Definition

Amount of charges related to severance and other expenses.

+ References

No definition available.

+ Details

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Namespace Prefix:	thtx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Disclosure of personnel expenses

+ References

No definition available.

+ Details

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Namespace Prefix:	thtx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration