v3.25.1
Document And Entity Information - shares
 9 Months Ended
Mar. 31, 2025
May 01, 2025
Document And Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2025  
Document Transition Report false  
Securities Act File Number 001-35023  
Entity Registrant Name iBio, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 26-2797813  
Entity Address, Address Line One 11750 Sorrento Valley Road  
Entity Address, Address Line Two Suite 200  
Entity Address, City or Town San Diego  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 92121  
City Area Code 979  
Local Phone Number 446-0027  
Title of 12(b) Security Common Stock  
Trading Symbol IBIO  
Security Exchange Name NASDAQ  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   16,519,281
Entity Central Index Key 0001420720  
Current Fiscal Year End Date --06-30  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q3  
Amendment Flag false