Reconciliation of Income Tax Expense (Detail) - USD ($)	12 Months Ended
Reconciliation of Income Tax Expense (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Foreign	$ (5,537)	$ (3,047)
Total current income tax expense	(5,537)	(3,047)
Total income tax expense	$ (5,537)	$ (3,047)

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

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

MEDICINOVA INC 10-K