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Stock-Based Compensation - Additional Information (Detail) |  | 12 Months Ended
--- | --- | ---
Jun. 21, 2023 shares | Dec. 31, 2023 USD ($) Milestone $ / shares shares | Dec. 31, 2022 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock options granted |  | 11,026,451 | 1,267,700
Shares weighted average grant date fair valueof stock options granted | $ / shares |  | $ 1.6 | $ 2.76
Number of specific clinical development milestones achieved | Milestone |  | 0 |
Aggregate intrinsic value of options exercised | $ |  | $ 0 |
Unrecognized stock-based compensation expense | $ |  | $ 12,400,000 |
Unrecognized stock-based compensation expense, recognized over estimated weighted average period |  | 2 years 4 months 24 days |
Time Based Vesting Requirements [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock options granted |  | 1,476,372 |
Time-based and Performance-based Vesting Requirements [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock options granted |  | 7,381,857 |
Stock options granted |  | 5,905,485 |
2014 Stock Incentive Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common stock, number of shares reserved for issuance |  | 0 |
2020 Long Term Incentive Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common stock, number of shares reserved for issuance |  | 3,093,742 |
Increased number of shares | 9,600,000 |  |
New aggregate share limit | 14,460,000 |  |
2014 Employee Stock Purchase Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common stock, number of shares reserved for issuance |  | 24,077 |

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