v3.24.1.1.u2
Cover - shares
3 Months Ended
Mar. 31, 2024
May 22, 2024
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Mar. 31, 2024  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q1  
Entity Information [Line Items]    
Entity Registrant Name Siebert Financial Corp.  
Entity Central Index Key 0000065596  
Entity File Number 0-5703  
Entity Tax Identification Number 11-1796714  
Entity Incorporation, State or Country Code NY  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One 653 Collins Avenue  
Entity Address, Address Line Two Miami Beach  
Entity Address, City or Town FL  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 33139  
Entity Phone Fax Numbers [Line Items]    
City Area Code (310)  
Local Phone Number 385-1861  
Entity Listings [Line Items]    
Title of 12(b) Security Common Stock - $0.01 par value  
Trading Symbol SIEB  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding   39,880,936