| Cover | Apr. 29, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Apr. 29, 2024 |
| Entity File Number | 0-4057 |
| Entity Registrant Name | PORTSMOUTH SQUARE, INC. |
| Entity Central Index Key | 0000079661 |
| Entity Tax Identification Number | 94-1674111 |
| Entity Incorporation, State or Country Code | CA |
| Entity Address, Address Line One | 1516 S. Bundy Drive |
| Entity Address, Address Line Two | Suite 200 |
| Entity Address, City or Town | Los Angeles |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90025 |
| City Area Code | (310) |
| Local Phone Number | 889-2500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
