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v3.25.1

Commitments and Contingencies - Additional Information (Details) | Dec. 31, 2024 USD ($) ft² | Dec. 31, 2023 USD ($)
--- | --- | ---
Commitments And Contingencies [Line Items] |  |
Indemnification liability | $ | $ 0 | $ 0
Office and laboratory space |  |
Commitments And Contingencies [Line Items] |  |
Number of square feet under lease | ft² | 24,300 |

X
- Definition Commitments And Contingencies [Line Items] + References No definition available. + Details
Name: | sera_CommitmentsAndContingenciesLineItems
Namespace Prefix: | sera_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of indemnification liability. + References No definition available. + Details
Name: | sera_IndemnificationLiability
Namespace Prefix: | sera_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The area of leased office and laboratory space. + References No definition available. + Details
Name: | sera_LesseeOperatingLeaseAreaOfLeasedSpaceOfficeAndLaboratory
Namespace Prefix: | sera_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=sera_OfficeAndLaboratorySpaceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |