XML 61 R49.htm IDEA: XBRL DOCUMENT
v3.21.1

3) Investments: Schedule Of Credit Risk Of Mortgage Loans Based On Performance Status (Details) - USD ($) | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Mortgage loans | $ 248,782,401 | $ 253,771,091
Commercial Loan |  |
Mortgage loans | 55,065,455 | 46,836,866
Residential Mortgage |  |
Mortgage loans | 88,266,355 | 111,111,777
Residential construction |  |
Mortgage loans | 105,450,591 | 95,822,448
Performing Financing Receivable |  |
Mortgage loans | 243,076,991 | 243,488,621
Performing Financing Receivable | Commercial Loan |  |
Mortgage loans | 53,997,090 | 44,688,039
Performing Financing Receivable | Residential Mortgage |  |
Mortgage loans | 83,830,273 | 87,889,768
Performing Financing Receivable | Residential construction |  |
Mortgage loans | 105,249,628 | 110,910,814
Nonperforming Financing Receivable |  |
Mortgage loans | 5,705,410 | 10,282,470
Nonperforming Financing Receivable | Commercial Loan |  |
Mortgage loans | 1,068,365 | 2,148,827
Nonperforming Financing Receivable | Residential Mortgage |  |
Mortgage loans | 4,436,082 | 7,932,680
Nonperforming Financing Receivable | Residential construction |  |
Mortgage loans | $ 200,963 | $ 200,963

X
- Definition Represents the monetary amount of Mortgage loans, as of the indicated date. + References No definition available. + Details
Name: | snfc_MortgageLoans
Namespace Prefix: | snfc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=snfc_ResidentialConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | snfc_CreditQualityIndicatorAxis=snfc_PerformingFinancingReceivable1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | snfc_CreditQualityIndicatorAxis=snfc_NonperformingFinancingReceivable1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |