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Schedule of Statutory Accounting Practices (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Statutory net income amount	$ 11,345,837	$ 12,508,980
Statutory capital and surplus, balance	107,384,632	94,254,586
Security National Life Insurance [Member]
Statutory net income amount	7,419,511	9,126,955
Statutory capital and surplus, balance	76,330,794	66,753,938
Kilpatrick Life Insurance Company [Member]
Statutory net income amount	2,967,779	2,373,682
Statutory capital and surplus, balance	20,535,591	17,300,717
First Guaranty Insurance Company [Member]
Statutory net income amount	958,497	1,007,026
Statutory capital and surplus, balance	8,427,355	8,107,405
Southern Security Life Insurance Company, Inc. [Member]
Statutory net income amount	35	(2,691)
Statutory capital and surplus, balance	1,578,322	1,579,971
Trans-Western Life Insurance Company [Member]
Statutory net income amount	15	4,008
Statutory capital and surplus, balance	$ 512,570	$ 512,555

X

- Definition

The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 944
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479989/944-505-50-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

+ Details

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Period Type:	duration

X

- Details

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Balance Type:
Period Type:

X

- Details

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X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=SNFCA_FirstGuarantyInsuranceCompanyMember
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X

- Details

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X

- Details

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