v3.25.2

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2025	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted period		4 years
Share based compensation expense		$ 0.2
Weighted average recognition period		2 years 7 months 24 days
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized stock-based compensation	$ 10.0	$ 10.0
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	0.9
Unamortized stock-based compensation	1.2	$ 1.2
Weighted average remaining recognition period		1 year 2 months 8 days
Aggregate intrinsic value of options outstanding	$ 1.4	$ 1.4
CSBU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		$ 2.4
2016 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance	3,510,546	3,510,546
2023 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance	2,721,787	2,721,787
Additional shares granted			5,450,000

Share based compensation arrangement by share based payment award granted period.

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Aldeyra Therapeutics, Inc. 10-Q