Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.22.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Mar. 18, 2022
Jun. 30, 2021
Document Information [Line Items]        
Document Type 10-K      
Document Annual Report true      
Document Period End Date Dec. 31, 2021      
Document Transition Report false      
Entity File Number 001-38191      
Entity Registrant Name MUSTANG BIO, INC.      
Entity Incorporation, State or Country Code DE      
Entity Tax Identification Number 47-3828760      
Entity Address, Address Line One 377 Plantation Street      
Entity Address, City or Town Worcester      
Entity Address, State or Province MA      
Entity Address, Postal Zip Code 01605      
City Area Code 781      
Local Phone Number 652-4500      
Title of 12(b) Security Common Stock, par value $0.0001 per share      
Trading Symbol MBIO      
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 true      
Entity Ex Transition Period true      
Entity Shell Company false      
Entity Public Float       $ 0
Entity Central Index Key 0001680048      
Document Fiscal Year Focus 2021      
Document Fiscal Period Focus FY      
Current Fiscal Year End Date --12-31      
Amendment Flag false      
ICFR Auditor Attestation Flag false      
Auditor Name KPMG LLP BDO USA, LLP    
Auditor Firm ID 185 243    
Auditor Location New York, NY Boston, MA    
Class A Common Shares [Member]        
Document Information [Line Items]        
Entity Common Stock, Shares Outstanding     845,385  
Common Shares [Member]        
Document Information [Line Items]        
Entity Common Stock, Shares Outstanding     99,445,369