Document And Entity Information
Jul. 08, 2022
Document Information [Line Items]  
Entity, Registrant Name MOLECULIN BIOTECH, INC.
Document, Type 8-K
Document, Period End Date Jul. 08, 2022
Entity, Incorporation, State or Country Code DE
Entity, File Number 001-37758
Entity, Tax Identification Number 47-4671997
Entity, Address, Address Line One 5300 Memorial Drive, Suite 950
Entity, Address, City or Town Houston
Entity, Address, State or Province TX
Entity, Address, Postal Zip Code 77007
City Area Code 713
Local Phone Number 300-5160
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity, Emerging Growth Company false
Title of 12(b) Security Common Stock
Trading Symbol MBRX
Security Exchange Name NASDAQ
Amendment Flag false
Entity, Central Index Key 0001659617