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

Capital Lease Obligation - Additional Information (Details) - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Capital Lease Obligation
Capital Leases, Income Statement, Interest Expense	$ 1,900,000	$ 1,915,000
Sub Lease Expiration Period	34 years
Operating Leases, Rent Expense	$ 2,100,000
Capital Lease Obligation Description	the base rent, iBio CDMO is required to pay, for each calendar year during the term, a portion of the total gross sales for products manufactured or processed at the facility, equal to 7% of the first $5,000,000 of gross sales, 6% of gross sales between $5,000,001 and $25,000,000, 5% of gross sales between $25,000,001 and $50,000,000, 4% of gross sales between $50,000,001 and $100,000,000, and 3% of gross sales between $100,000,001 and $500,000,000. However, if for any calendar year period from January 1, 2018 through December 31, 2019, iBio CDMO's applicable gross sales are less than $5,000,000, or for any calendar year period from and after January 1, 2020, its applicable gross sales are less than $10,000,000, then iBio CDMO is required to pay the amount that would have been payable if it had achieved such minimum gross sales and shall pay no less than the applicable percentage for the minimum gross sales for each subsequent calendar year. Percentage rent amounted to $350,000 and $199,000 in 2019 and 2018, respectively.