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Deferred tax - Deferred tax assets not recognized (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Major components of tax expense (income) [abstract]
Tax losses utilized	$ 83,265	$ 118,477

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- References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Tax Losses Utilized

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No definition available.

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