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Merger - (Additional Information) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Merger [Line Items]
Reduction to additional paid-in capital	$ 9.3

X

- References

No definition available.

+ Details

Name:	tecx_MergerLineItems
Namespace Prefix:	tecx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of other increase (decrease) in additional paid in capital (APIC).

+ References

No definition available.

+ Details

Name:	us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration