XML 12 R1.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Document and Entity Information - shares
6 Months Ended
Jun. 30, 2024
Aug. 20, 2024
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2024  
Entity File Number 001-42113  
Entity Registrant Name Seaport Entertainment Group Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 99-0947924  
Entity Address State Or Province NY  
Entity Address, Address Line One 199 Water Street  
Entity Address, Adress Line Two 28th Floor  
Entity Address, City or Town New York  
Entity Address, Postal Zip Code 10038  
City Area Code 212  
Local Phone Number 732-8257  
Title of 12(b) Security Common Stock, par value $0.01 per share  
Trading Symbol SEG  
Security Exchange Name NYSEAMER  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   5,521,884
Entity Central Index Key 0002009684  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q2  
Amendment Flag false