Document and Entity Information - USD ($)		12 Months Ended
	Jun. 30, 2019	Dec. 31, 2019	Mar. 24, 2020
Registrant CIK		0000318673
Fiscal Year End		--12-31
Registrant Name		SECURITY NATIONAL FINANCIAL CORPORATION
SEC Form		10-K
Period End date		Dec. 31, 2019
Tax Identification Number (TIN)		87-0345941
Public Float	$ 26,000,000
Filer Category		Non-accelerated Filer
Current with reporting		Yes
Interactive Data Current		Yes
Voluntary filer		No
Well-known Seasoned Issuer		No
Shell Company		false
Small Business		true
Emerging Growth Company		false
Document Annual Report		true
Document Transition Report		false
Entity File Number		000-09341
Entity Incorporation, State or Country Code		UT
Entity Address, Address Line One		123 West Election Road
Entity Address, City or Town		Draper
Entity Address, State or Province		UT
Entity Address, Postal Zip Code		84020
City Area Code		(801)
Local Phone Number		264-1060
Entity Listing, Par Value Per Share	$ 4.78
Amendment Flag		false
Document Fiscal Year Focus		2019
Document Fiscal Period Focus		FY
Common Class A
Number of common stock shares outstanding			16,142,513
Common Class C
Number of common stock shares outstanding			2,489,215