XML 23 R1.htm IDEA: XBRL DOCUMENT v3.23.1
Cover Page - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Mar. 17, 2023
Jun. 30, 2022
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2022    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-36579    
Entity Registrant Name Adverum Biotechnologies, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 20-5258327    
Entity Address, Address Line One 100 Cardinal Way    
Entity Address, City or Town Redwood City    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94063    
City Area Code 650    
Local Phone Number 656-9323    
Title of 12(b) Security Common Stock, par value $0.0001 per share    
Trading Symbol ADVM    
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    
Entity Shell Company false    
Entity Public Float     $ 114.9
Entity Common Stock, Shares Outstanding   100,559,291  
Documents Incorporated by Reference Portions of the definitive proxy statement (the Proxy Statement) for the 2023 Annual Meeting of Stockholders of the registrant are incorporated by reference into Part III of this Annual Report on Form 10-K. If the Proxy Statement is not filed by May 1, 2023, then the registrant will file an amendment to this Form 10-K on Form 10-K/A to include the Part III information in this Form 10-K.    
Amendment Flag false    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001501756