Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
Sep. 30, 2025	Mar. 31, 2025
Warrant inducement, exercise price (in dollars per share)	$ 0.37	$ 1

Represents the exercise price of warrants or rights exercised by inducement during the period.

No definition available.

Name:	mbrx_ClassOfWarrantOrRightInducementExercisedExercisePrice
Namespace Prefix:	mbrx_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration