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Organization and Liquidity - Additional information (Details) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 19, 2023 USD ($) $ / shares shares | Mar. 31, 2024 USD ($) Program | Sep. 30, 2023 | Dec. 31, 2023 USD ($) | Sep. 20, 2023 shares | Mar. 31, 2023 USD ($)
Organization and Liquidity [Line items] |  |  |  |  |  |
Number of clinical and preclinical neuroscience programs | Program |  | 7 |  |  |  |
Reverse stock split |  | 7.8463-for-1 |  |  |  |
Reverse stock split conversion ratio |  |  | 0.1274 |  |  |
Preferred stock, shares authorized | shares |  |  |  |  | 50,000,000 |
Accumulated deficit |  | $ (757,155) |  | $ (703,434) |  |
Cash and cash equivalents |  | 182,927 |  | 374,038 |  | $ 210,870
Marketable securities |  | 239,788 |  | $ 79,944 |  |
Initial Public Offering |  |  |  |  |  |
Organization and Liquidity [Line items] |  |  |  |  |  |
Common stock sold in initial public offering | shares | 14,710,000 |  |  |  |  |
Price to public, per share | $ / shares | $ 17 |  |  |  |  |
Proceeds from initial public offering | $ 226,500 |  |  |  |  |
Underwriting discounts and commissions | 17,500 |  |  |  |  |
Offering expenses | $ 6,000 |  |  |  |  |
Common stock shares authorized | shares | 700,000,000 |  |  |  |  |
Common stock, par value | $ / shares | $ 0.0001 |  |  |  |  |
Preferred stock, shares authorized | shares | 50,000,000 |  |  |  |  |
Preferred stock, par value | $ / shares | $ 0.0001 |  |  |  |  |
Number of convertible preferred stock automatically converted into shares of common stock | shares | 104,417,415 |  |  |  |  |
Liquidity |  |  |  |  |  |
Organization and Liquidity [Line items] |  |  |  |  |  |
Accumulated deficit |  | 757,200 |  |  |  |
Cash, cash equivalents, and marketable securities |  | $ 423,000 |  |  |  |

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