XML 16 R1.htm IDEA: XBRL DOCUMENT v3.25.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2024
Mar. 28, 2025
Jun. 30, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag false    
Amendment Flag false    
Document Period End Date Dec. 31, 2024    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference [Text Block] None    
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 Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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 Public Float     $ 23,291,000
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   40,432,936