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Trade Receivables | 12 Months Ended
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Dec. 31, 2024
Receivables [Abstract] |
Trade Receivables | 13. Trade receivables
|  | Year ended December 31, |
|  | 2024 |  |  | 2023 |
|  | $000s |  |  | $000s |
Trade receivables |  |  | 972 |  |  |  | 290 |
The Directors consider that the carrying amount of trade receivables approximates to their fair value. No interest is charged on outstanding receivables. There were no overdue trade receivables balances. The Group has applied an expected credit loss model to the balance and determined that no allowance is required for the periods ended December 31, 2024 and 2023.

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- Definition Accounts receivable. + References No definition available. + Details
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Namespace Prefix: | sln_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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