XML 51 R29.htm IDEA: XBRL DOCUMENT
v3.25.4

Summary of Significant Accounting Policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
Accounting Policies [Abstract] |
Summary of Estimated Useful Lives of Property and Equipment | The Company depreciates property and equipment using the straight-line method over the estimated useful lives of the respective assets, as follows:
Lab equipment |  | 5 years
Furniture and fixtures |  | 5 years
Office equipment |  | 5 years
Computer Equipment |  | 3 years
Leasehold improvements |  | Shorter of remaining lease term or estimated useful life

X
- Definition Summary of estimated useful lives of property, plant and equipment. + References No definition available. + Details
Name: | sepn_SummaryOfEstimatedUsefulLivesOfPropertyPlantAndEquipmentTableTextBlock
Namespace Prefix: | sepn_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration