v3.25.4
Other Assets - Additional Information (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Contracted Development Costs
Other Assets [Line Items]
Prepayments assets
$ 6.8
$ 11.0
X
- Definition
Other assets.
+ References
No definition available.
+ Details
Name:
sln_OtherAssetsLineItems
Namespace Prefix:
sln_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Prepayments assets.
+ References
No definition available.
+ Details
Name:
sln_PrepaymentsAssets
Namespace Prefix:
sln_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
instant
X
- Details
Name:
us-gaap_BalanceSheetLocationAxis=us-gaap_ResearchAndDevelopmentExpenseMember
Namespace Prefix:
Data Type:
na
Balance Type:
Period Type: