Income Taxes - Components of Income Tax Provision (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Deferred Federal, State and Local, Tax Expense (Benefit) [Abstract]
Federal	$ 0	$ 0
State	0	1,000
Total income tax provision	$ 0	$ 1,000

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Aldeyra Therapeutics, Inc. 10-K