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Stock-based Compensation (Additional Information) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Nov. 30, 2023 | Mar. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Common stock, reserved for future issuance | 1,675,396 | 5,487,208 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Description | In addition, the number of shares of common stock available for issuance under the 2023 Plan will be automatically increased on the first day of each calendar year during the ten-year term of the 2023 Plan, beginning with January 1, 2024 and ending with January 1, 2033, by the amount equal to 5% of the outstanding number of shares of the Company’s common stock on December 31 of the preceding calendar year or such lesser amount as determined by the Company’s board of directors. |  |  |
Number of Outstanding Option | 1,323,151 | 461,100 |  |
Weighted-average grant date fair value of stock options granted | $ 23.49 | $ 14.95 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value | $ 0.3 | $ 0.1 |  |
Total unrecognized stock-based compensation expense relating to unvested stock options | $ 10.1 |  |  |
Unrecognized unvested stock options, weighted-average period | 3 years 1 month 6 days |  |  |
Options vesting period | 4 years |  |  |
Options expiration period | 10 years |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Fair value of restricted common stock | $ 0.1 | $ 0.5 |  |
2019 Stock Incentive Plan Member |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Common stock, reserved for future issuance | 600,977 | 683,156 |  |
2019 Stock Incentive Plan |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Common stock, reserved for future issuance | 110,285 |  |  |
Common stock authorized under plan |  |  |  | 747,752
2019 Incentive Award Plan [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Common stock authorized under plan | 154,032 |  |  |
2023 Stock Option and Incentive Plan |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Common stock, reserved for future issuance | 889,922 |  | 885,028 |
Common stock, shares available for future grants | 255,694 |  |  |
2019 Stock Incentive Plan |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Number of Outstanding Option | 51,491 |  |  |
2014 Stock Incentive Plan |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Common stock, reserved for future issuance | 424,853 |  |  |
Common stock, shares available for future grants | 0 |  |  |
Number of Outstanding Option | 36,455 |  |  |
Legacy Korro [Member] | 2019 Stock Incentive Plan |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Common stock, shares available for future grants | 0 | 159,890 |  |

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