iBio Inc. Annual report pursuant to Section 13 and 15(d)

Employee 401(K) Plan (Narrative) (Details) - USD ($)	12 Months Ended
Employee 401(K) Plan (Narrative) (Details) - USD ($)	Jun. 30, 2021	Jun. 30, 2020
Employee 401(K) Plan [Abstract]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	100.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	5.00%
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 121,000	$ 97,000

Amount of contribution received by defined benefit plan from employer which increases plan assets.