v3.25.2
Cover - USD ($)
 12 Months Ended
Jun. 30, 2025
Sep. 29, 2025
Dec. 31, 2024
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Jun. 30, 2025    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Current Fiscal Year End Date --06-30    
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    
Title of 12(g) Security Common Stock, No Par Value    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 278,000
Entity Common Stock, Shares Outstanding   734,187  
Documents Incorporated by Reference [Text Block] None    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Auditor Opinion [Text Block] We have audited the accompanying consolidated balance sheets of Portsmouth Square, Inc. and its subsidiaries (the “Company”) as of June 30, 2025 and 2024, and the related consolidated statements of operations, shareholders’ deficit, and cash flows for the years then ended, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of June 30, 2025 and 2024, and the results of its operations and its cash flows for each of the two years in the period ended June 30, 2025, in conformity with accounting principles generally accepted in the United States of America.    
Auditor Name WithumSmith+Brown, PC    
Auditor Location East Brunswick, NJ    
Auditor Firm ID 100