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Schedule of Allowance for Credit Losses (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Marketable Securities [Line Items]
Financing Receivable, Allowance for Credit Loss, Beginning	$ 1,609,951	$ 1,686,218
Financing Receivable, Allowance for Credit Loss, Ending	1,685,901	1,609,951
Commercial Loan [Member]
Marketable Securities [Line Items]
Allowance for credit losses, change in provision	233,113	889,480
Allowance for credit losses, Charge-offs	$ (157,163)	$ (965,747)

X

- Definition

Allowance for credit losses,premiums and other receivables change in provision.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Allowance for credit losses premiums and other receivables chargeoffs.

+ References

No definition available.

+ Details

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Namespace Prefix:	SNFCA_
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X

- Definition

The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-4

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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