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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2023
Apr. 01, 2024
Jun. 30, 2023
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Document Transition Report false    
Entity File Number 001-41150    
Entity Registrant Name Southport Acquisition Corporation    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 86-3483780    
Entity Address, Address Line One 1745 Grand Avenue    
Entity Address, City or Town Del Mar    
Entity Address State Or Province CA    
Entity Address, Postal Zip Code 92014    
City Area Code 917    
Local Phone Number 503-9722    
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 true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company true    
Entity Public Float     $ 87,842,684
Entity Central Index Key 0001865200    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Amendment Flag false    
Auditor Name BDO USA, P.C.    
Auditor Firm ID 243    
Auditor Location New York, NY    
Units, each consisting of one share of Class A common stock, $0.0001 par value, and one-half of one warrant      
Document and Entity Information      
Title of 12(b) Security Units, each consisting of one share of Class A common stock, $0.0001 par value, and one-half of one warrant    
Trading Symbol PORT.U    
Security Exchange Name NYSE    
Class A common stock      
Document and Entity Information      
Title of 12(b) Security Class A common stock, par value $0.0001 per share    
Trading Symbol PORT    
Security Exchange Name NYSE    
Entity Common Stock, Shares Outstanding   5,363,113  
Class B common stock      
Document and Entity Information      
Entity Common Stock, Shares Outstanding   1,550,000  
Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50, subject to adjustment      
Document and Entity Information      
Title of 12(b) Security Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50, subject to adjustment    
Trading Symbol PORT.W    
Security Exchange Name NYSE