Annual report [Section 13 and 15(d), not S-K Item 405]

Document And Entity Information

v3.25.2
Document And Entity Information - USD ($)
 12 Months Ended
Jun. 30, 2025
Sep. 04, 2025
Dec. 31, 2024
Document And Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jun. 30, 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 302    
Local Phone Number 355-0650    
Title of 12(b) Security Common Stock    
Trading Symbol IBIO    
Security Exchange Name NASDAQ    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer 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 Common Stock, Shares Outstanding   19,654,636  
Entity Central Index Key 0001420720    
Current Fiscal Year End Date --06-30    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Public Float     $ 22,429,069
Auditor Name GRASSI & Co., CPAs, P.C.    
Auditor Firm ID 606    
Auditor Location Jericho, New York