Employee 401(k) Plan (Details) - iBio 401(k) Plan - USD ($)	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Employee 401(k) Plan
Employer matching contribution, percent of match	100.00%
Employer matching contribution, percent of employees gross pay	5.00%
Employer contribution expense	$ 194,000	$ 139,000

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

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+ Details