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v3.23.1

Available-for-Sale Securities - Additional Information (Detail) | 3 Months Ended | 12 Months Ended
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Mar. 31, 2023 | Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract] |  |
Available-for-sale securities average maturity period | 6 months | 6 months

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- Definition Available For Sale Securities Weighted Average Maturity period + References No definition available. + Details
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Namespace Prefix: | sldb_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Balance Type: | na
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