XML 48 R36.htm IDEA: XBRL DOCUMENT
v3.21.2

Schedule of Major Categories of Net Investment Income (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Net Investment Income [Line Items] |  |  |  |
Gross investment income | $ 18,255,054 | $ 18,125,776 | $ 53,151,973 | $ 51,093,938
Investment expenses | (3,162,092) | (3,416,634) | (9,587,806) | (10,021,552)
Net investment income | 15,092,962 | 14,709,142 | 43,564,167 | 41,072,386
Fixed Maturity Securities [Member] |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gross investment income | 2,667,848 | 3,191,064 | 8,189,971 | 9,258,850
Equity Securities |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gross investment income | 111,213 | 126,369 | 345,482 | 329,534
Mortgage Loans Real Estate [Member |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gross investment income | 7,040,773 | 6,918,081 | 20,027,656 | 18,154,123
Real Estate 1 [Member] |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gross investment income | 3,307,980 | 2,998,806 | 9,353,459 | 8,940,072
Policy Student and Other Loans [Member |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gross investment income | 229,857 | 264,422 | 694,345 | 755,914
Insurance Assignments [Member] |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gross investment income | 4,781,079 | 4,561,574 | 14,298,126 | 13,244,176
Other Investments 1 [Member] |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gross investment income | 35,118 |  | 88,124 | 25,421
Cash and Cash Equivalents 1 [Member] |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Gross investment income | 81,186 | 65,460 | 154,810 | 385,848
Fixed Maturity Securities [Member] |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Proceeds received from sale of fixed maturity available for sale securities | 843,151 | 214,200 | 2,826,082 | 2,967,531
Gross realized gains | 13,878 | 16,302 | 223,010 | 149,641
Gross realized losses | $ (3,249) | $ (906) | $ (3,249) | $ (1,043)

X
- Definition Represents the monetary amount of Gross investment income, during the indicated time period. + References No definition available. + Details
Name: | SNFCA_GrossInvestmentIncome
Namespace Prefix: | SNFCA_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | SNFCA_GrossRealizedGain
Namespace Prefix: | SNFCA_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | SNFCA_GrossRealizedLoss
Namespace Prefix: | SNFCA_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | SNFCA_ProceedsReceivedFromSaleOfFixedMaturityAvailableForSaleSecurities
Namespace Prefix: | SNFCA_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of expenses related to the generation of investment income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.2) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
Name: | us-gaap_InvestmentIncomeInvestmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
Name: | us-gaap_NetInvestmentIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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
Name: | us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=SNFCA_EquitySecurities1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=SNFCA_RealEstate1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=SNFCA_OtherInvestments1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=SNFCA_CashAndCashEquivalents1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=SNFCA_FixedMaturitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |