v3.22.2.2
Cover - USD ($)
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Sep. 28, 2022
Dec. 31, 2021
Cover [Abstract]        
Document Type 10-K      
Amendment Flag false      
Document Annual Report true      
Document Transition Report false      
Document Period End Date Jun. 30, 2022      
Document Fiscal Period Focus FY      
Document Fiscal Year Focus 2022      
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      
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       $ 5,734,000
Entity Common Stock, Shares Outstanding     734,187  
Auditor Name WithumSmith+Brown, PC Moss Adams LLP    
Auditor Location East Brunswick, NJ Irvine, California    
Auditor Firm ID 100 659