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Common Stock - Equity Awards - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for options currently outstanding | 2,127,863 | 2,127,863 | 2,139,414
Number of shares granted |  | 313,500 |
Unrecognized compensation expense related to stock options granted | $ 2.2 | $ 2.2 |
Employee Stock Option [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Weighted-average period, restricted stock awards |  | 1 year 8 months 26 days |
Employee Stock Option [Member] | Employees and Consultants [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award vesting period |  | 4 years |
Employee Stock Option [Member] | Minimum [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award expiration period |  | 7 years |
Employee Stock Option [Member] | Minimum [Member] | Board of Directors [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award vesting period |  | 1 year |
Employee Stock Option [Member] | Maximum [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award expiration period |  | 10 years |
Employee Stock Option [Member] | Maximum [Member] | Board of Directors [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award vesting period |  | 3 years |
Restricted Stock Unit [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Restricted shares reserved for issuance under incentive plan | 2,569,350 | 2,569,350 |
Award vesting period |  | 4 years |
Weighted-average period, restricted stock awards |  | 7 months 17 days |
2018 Equity Incentive Plan [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for issuance under incentive plan | 320,637 | 320,637 |
Award expiration period |  | 10 years |
2018 Equity Incentive Plan [Member] | Minimum [Member] | Employees and Consultants [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award vesting period |  | 3 years |
2018 Equity Incentive Plan [Member] | Minimum [Member] | Board of Directors [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award vesting period |  | 1 year |
2018 Equity Incentive Plan [Member] | Maximum [Member] | Employees and Consultants [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award vesting period |  | 4 years |
2018 Equity Incentive Plan [Member] | Maximum [Member] | Board of Directors [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award vesting period |  | 3 years |
2018 Equity Incentive Plan [Member] | Employee Stock Option [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for issuance under incentive plan | 4,401,669 | 4,401,669 |
Common shares reserved for options currently outstanding | 1,511,682 | 1,511,682 |
New Employee Inducement Grants [Member] | Employee Stock Option [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for options currently outstanding | 134,375 | 134,375 |
Award expiration period |  | 10 years |
Number of shares granted | 0 | 0 |
2017 Equity Incentive Plan [Member] | Employee Stock Option [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for issuance under incentive plan | 10,536 | 10,536 |
2010 Performance Incentive Plan [Member] | Employee Stock Option [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for issuance under incentive plan | 20 | 20 |
2023 Non Employee Director Equity Incentive Plan [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for issuance under incentive plan | 9,750 | 9,750 |
Award expiration period |  | 10 years |
2023 Non Employee Director Equity Incentive Plan [Member] | Minimum [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award vesting period |  | 1 year |
2023 Non Employee Director Equity Incentive Plan [Member] | Maximum [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Award vesting period |  | 3 years |
2023 Non Employee Director Equity Incentive Plan [Member] | Employee Stock Option [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for issuance under incentive plan | 300,000 | 300,000 |
Common shares reserved for options currently outstanding | 290,250 | 290,250 |
2024 Equity Inducement Plan [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for issuance under incentive plan | 901,000 | 901,000 |
Award expiration period |  | 10 years |
2024 Equity Inducement Plan [Member] | Employee Stock Option [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for issuance under incentive plan | 1,250,000 | 1,250,000 |
Common shares reserved for options currently outstanding | 181,000 | 181,000 |
2024 Equity Inducement Plan [Member] | Restricted Stock Unit [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common shares reserved for options currently outstanding | 168,000 | 168,000 |

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