Cover - USD ($)	12 Months Ended
	Dec. 31, 2022	Mar. 27, 2023	Jun. 30, 2022
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2022
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--12-31
Entity File Number	000-09341
Entity Registrant Name	SECURITY NATIONAL FINANCIAL CORPORATION
Entity Central Index Key	0000318673
Entity Tax Identification Number	87-0345941
Entity Incorporation, State or Country Code	UT
Entity Address, Address Line One	433 West Ascension Way
Entity Address, City or Town	Salt Lake City
Entity Address, State or Province	UT
Entity Address, Postal Zip Code	84123
City Area Code	(801)
Local Phone Number	264-1060
Title of 12(b) Security	Class A Common Stock
Trading Symbol	SNFCA
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 42,000,000
Documents Incorporated by Reference	None.
ICFR Auditor Attestation Flag	false
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Salt Lake City, UT
Common Class A [Member]
Entity Common Stock, Shares Outstanding		18,807,013
Common Class C [Member]
Entity Common Stock, Shares Outstanding		2,888,923