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Development and Other Agreements (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2022 | Dec. 28, 2018
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Shares issued In connection with the restated collaboration agreement (in shares) |  |  | 2,900,000 |  |  |  |  |
Verily Life Sciences | Collaborative Arrangement |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Amortization period (in months) |  |  |  |  |  |  | 64 months |
Initial Payment | Verily Life Sciences | Collaborative Arrangement |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Closing stock price (in USD per share) |  |  |  |  |  |  |  | $ 29.57
Initial payment on collaborative agreement |  |  |  |  | $ 250.0 |  |  |
Issuance of common stock in connection with acquisition, shares (in shares) |  |  |  |  | 7,400,000 |  |  |
Collaborative research and development fee |  |  |  | $ 87.1 | $ 217.7 |  |  |
Milestone Payments | Verily Life Sciences | Collaborative Arrangement |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Collaborative research and development fee |  |  |  |  |  | $ 3.2 |  |
Sales-based milestones |  |  |  |  |  |  | $ 152.4 |
Potential future common stock issuable (in shares) |  |  |  |  |  |  |  | 5,200,000
Issuance of common stock in connection with achievement of regulatory approval milestone, net of issuance costs (in shares) | 1,500,000 | 3,700,000 |  |  |  |  |  |

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