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Schedule of Real Estate Owned and Occupied by the Company (Details)

Dec. 31, 2024

ft²

Mortgage Operations [Member]

Approximate square footage

221,000

^[1]

Square footage occupied by the company

50.00%

^[1]

Life Insurance Operations [Member]

Approximate square footage

12,274

^[2]

Square footage occupied by the company

100.00%

^[2]

Life Insurance Sales [Member]

Approximate square footage

1,560

^[2],[3]

Square footage occupied by the company

100.00%

^[2],[3]

[1]	Included in real estate held for investment on the consolidated balance sheets
[2]	Included in property and equipment on the consolidated balance sheets
[3]	Listed for sale

X

- Definition

Represents the Approximate Square Footage, as of the indicated date.

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Represents the Square Footage Occupied by the Company, as of the indicated date.

+ References

No definition available.

+ Details

Name:	SNFCA_SquareFootageOccupiedByTheCompany
Namespace Prefix:	SNFCA_
Data Type:	dtr-types:percentItemType
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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Period Type: