XML 57 R45.htm IDEA: XBRL DOCUMENT
v3.21.1

3) Investments: Real Estate Owned and Occupied by the Company (Details) | Mar. 31, 2021 ft²
--- | ---
Corporate Offices, Life Insurance and Cemetery/Mortuary Operations |  |
Approximate Square Footage | 78,979 |
Square Footage Occupied by the Company | 18.00% |
Mortgage |  |
Approximate Square Footage | 39,157 | [1]
Square Footage Occupied by the Company | 73.00% | [1]
Life Insurance Operations |  |
Approximate Square Footage | 19,694 |
Square Footage Occupied by the Company | 28.00% |
Life Insurance Operations 1 |  |
Approximate Square Footage | 12,274 | [1]
Square Footage Occupied by the Company | 100.00% | [1]
Life Insurance Sales |  |
Approximate Square Footage | 8,059 | [1]
Square Footage Occupied by the Company | 100.00% | [1]
Life Insurance Sales 1 |  |
Approximate Square Footage | 1,560 | [1]
Square Footage Occupied by the Company | 100.00% | [1]
Life Insurance Sales 2 |  |
Approximate Square Footage | 1,737 | [1]
Square Footage Occupied by the Company | 100.00% | [1]
[1] | Included in property and equipment on the condensed consolidated balance sheets

X
- Definition Represents the Approximate Square Footage, as of the indicated date. + References No definition available. + Details
Name: | snfc_ApproximateSquareFootage
Namespace Prefix: | snfc_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the Square Footage Occupied by the Company, as of the indicated date. + References No definition available. + Details
Name: | snfc_SquareFootageOccupiedByTheCompany
Namespace Prefix: | snfc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=snfc_CorporateOfficesLifeInsuranceAndCemeteryMortuaryOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=snfc_MortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=snfc_LifeInsuranceOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=snfc_LifeInsuranceOperations1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=snfc_LifeInsuranceSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=snfc_LifeInsuranceSales1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=snfc_LifeInsuranceSales2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |