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Stock-based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Mar. 20, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common stock shares reserved for future issuance | 2,475,016 |  |
Common stock, shares issued | 5,754,505 | 84,165 |
Number of options, forfeited | 96,594 |  |
Stock-based compensation expense | $ 12,039 | $ 1,401 |
Acceleration of stock awards | 10,500 |  |
Research and Development |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Stock-based compensation expense | 2,449 | 499 |
General and Administrative |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Stock-based compensation expense | 9,590 | $ 902 |
Graybug |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Acceleration of stock awards | 10,500 |  |
Graybug | Research and Development |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Stock-based compensation expense | 1,900 |  |
Graybug | General and Administrative |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Stock-based compensation expense | $ 8,600 |  |
2006 Equity Incentive Plan |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Expiration period | 10 years |  |
Award vesting rights, percentage | 25.00% |  |
Award vesting period | 1 year |  |
Vesting period | 36 months |  |
2023 Equity Incentive Plan |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common stock shares reserved for future issuance | 394,309 |  | 1,000,000
Percentage of aggregate number of shares of common stock outstanding on last day of preceding year added to plan | 5.00% |  |
Number of options, forfeited | 96,594 |  |
Shares available for grant (shares) | 394,309 |  |
2023 Employee Stock Purchase Plan |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common stock shares reserved for future issuance | 65,000 |  |
Weighted averagefair value options, granted | $ 2.34 | $ 12.85 |
Total fair value of shares vested | $ 11,900 | $ 1,700 |
Common stock, shares issued | 195,000 |  |
Exercise of common stock options, Shares | 0 |  |
Percentage of aggregate number of shares of common stock outstanding on last day of preceding year added to plan | 1.00% |  |
Stock Issued | 0 |  |
Total unrecognized stock-based compensation expenses related to outstanding unvested stock awards | $ 2,300 |  |
Total unrecognized stock-based compensation expenses related to outstanding unvested stock awards weighted-average term of recognition | 2 years 4 months 24 days |  |

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