Document and Entity Information	3 Months Ended
	Jun. 30, 2012
Document and Entity Information:
Entity Registrant Name	Security Federal Corporation
Document Type	10-Q
Document Period End Date	Jun. 30, 2012
Amendment Flag	true
Entity Central Index Key	0000818677
Current Fiscal Year End Date	--03-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Amendment Description	1