Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information - USD ($)
12 Months Ended
Dec. 31, 2023
Mar. 01, 2024
Jun. 30, 2023
Document Information [Line Items]      
Entity Central Index Key 0001644963    
Entity Registrant Name AVENUE THERAPEUTICS, INC.    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2023    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Document Transition Report false    
Entity File Number 001-38114    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 47-4113275    
Entity Address, Address Line One 1111 Kane Concourse, Suite 301    
Entity Address, City or Town Bay Harbor Islands    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 33154    
City Area Code 781    
Local Phone Number 652-4500    
Title of 12(b) Security Common Stock, par value $0.0001 per share    
Trading Symbol ATXI    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 8,522,013
Entity Common Stock, Shares Outstanding   44,260,667  
Auditor Name KPMG LLP    
Auditor Location New York, NY    
Auditor Firm ID 185