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Common Stock - Equity Awards - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares reserved for options currently outstanding	4,970,511	2,730,211
Number of shares granted	2,309,900
Unrecognized compensation expense related to stock options granted	$ 9.1
Employee Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average period, restricted stock awards	3 years 6 months 10 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	1,084,330
Award vesting period	4 years
Weighted-average period, restricted stock awards	1 year 2 months 1 day
2018 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares reserved for issuance under incentive plan	613,813
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	5,563,848
Common shares reserved for options currently outstanding	3,865,705
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	125,000
Award expiration period	10 years
Number of shares granted	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
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
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	72,750
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
Common shares reserved for options currently outstanding	227,250
2024 Equity Inducement Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares reserved for issuance under incentive plan	340,000
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	1,082,000
Common shares reserved for options currently outstanding	742,000