Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Nov. 11, 2015
Entity Registrant Name	1st Franklin Financial Corporation
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Trading Symbol	ffc
Amendment Flag	false
Entity Central Index Key	0000038723
Current Fiscal Year End Date	--12-31
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	2015
Document Fiscal Period Focus	Q3
Nonvoting Common Stock
Entity Common Stock, Shares Outstanding		168,300
Voting Common Stock
Entity Common Stock, Shares Outstanding		1,700