Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information - USD ($)
12 Months Ended
Jun. 30, 2017
Sep. 15, 2017
Dec. 30, 2016
Document Information [Line Items]      
Entity Registrant Name iBio, Inc.    
Entity Central Index Key 0001420720    
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jun. 30, 2017    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --06-30    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 21,262,787
Trading Symbol IBIO    
Entity Common Stock, Shares Outstanding   92,818,510