What is Permanently restricted ?
Permanently restricted meaning Net assets of FASB institutions that must be maintained in perpetuity. Permanently restricted net assets increase when institutions receive contributions for which donor-imposed restrictions limiting the institution’s use of an asset or its economic benefits neither expire with the passage of time nor can be removed by the organization’s meeting certain requirements. Donor-imposed restrictions on the use of the investment income on the assets may also change the amount of such net assets. Permanent endowment funds are the most common example.
reference: IPEDS Data Collectrion System – Glossary