XML 183 R106.htm IDEA: XBRL DOCUMENT
v3.26.1

Discontinued operations - Finance cost (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Interest expenses on lease liabilities | $ 258 | $ 203 | $ 242
Discontinued operations |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Interest expenses on lease liabilities | 17 | 35 | 196
Discontinued operations | Prevention and diagnostics - COVID-19 related and EMEA operations |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Interest expenses on lease liabilities | 0 | 0 | 122
Discontinued operations | ACT genomics |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Interest expenses on lease liabilities | $ 17 | $ 35 | $ 74

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2025-01-01 -Paragraph 53 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_b&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 115 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_b&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 115 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_b&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_InterestExpenseOnLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_ContinuingAndDiscontinuedOperationsAxis=ifrs-full_DiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=pre_COVID19DiagnosticServicesAndOtherDNATestingOperationsInTheEMEARegionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=pre_ACTGenomicsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |