Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Mar. 13, 2015	Jun. 30, 2014
Document And Entity Information
Entity Registrant Name	Siebert Financial Corp
Entity Central Index Key	0000065596
Document Type	10-K
Document Period End Date	Dec. 31, 2014
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer?	Yes
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 5,517,182
Entity Common Stock, Shares Outstanding		22,085,126
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2014