<?xml version="1.0" encoding="US-ASCII" ?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5a -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
    <!-- Field: Doc-Info; Name: Misc; Value: 96Mps7xRiXgen8uDanwsWaGM2bP9z5Z8eekhvWB9belqXygroNL3diwAAXemoZ0E -->
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:dei="http://xbrl.sec.gov/dei/2026" xmlns:us-gaap="http://fasb.org/us-gaap/2026" xmlns:srt="http://fasb.org/srt/2026" xmlns:srt-types="http://fasb.org/srt-types/2026" xmlns:ecd="http://xbrl.sec.gov/ecd/2026" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:SNFCA="http://securitynational.com/20260331" elementFormDefault="qualified" targetNamespace="http://securitynational.com/20260331">
    <annotation>
      <appinfo>
        <link:roleType roleURI="http://securitynational.com/role/Cover" id="Cover">
          <link:definition>00000001 - Document - Cover</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/BalanceSheets" id="BalanceSheets">
          <link:definition>00000002 - Statement - Condensed Consolidated Balance Sheets (Unaudited)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/BalanceSheetsParenthetical" id="BalanceSheetsParenthetical">
          <link:definition>00000003 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/StatementsOfEarnings" id="StatementsOfEarnings">
          <link:definition>00000004 - Statement - Condensed Consolidated Statements of Earnings (Unaudited)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/StatementsOfEarningsParenthetical" id="StatementsOfEarningsParenthetical">
          <link:definition>00000005 - Statement - Condensed Consolidated Statements of Earnings (Unaudited) (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/StatementsOfComprehensiveIncome" id="StatementsOfComprehensiveIncome">
          <link:definition>00000006 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/StatementsOfStockholdersEquity" id="StatementsOfStockholdersEquity">
          <link:definition>00000007 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/StatementsOfCashFlows" id="StatementsOfCashFlows">
          <link:definition>00000008 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/BasisOfPresentationAndRecentAccountingPronouncements" id="BasisOfPresentationAndRecentAccountingPronouncements">
          <link:definition>999014 - Disclosure - Basis of Presentation and Recent Accounting Pronouncements</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/Investments" id="Investments">
          <link:definition>999015 - Disclosure - Investments</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/LoansHeldForSale" id="LoansHeldForSale">
          <link:definition>999016 - Disclosure - Loans Held for Sale</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/Receivables" id="Receivables">
          <link:definition>999017 - Disclosure - Receivables</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/RestrictedAssets" id="RestrictedAssets">
          <link:definition>999018 - Disclosure - Restricted Assets</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/CemeteryPerpetualCareTrustInvestmentsAndObligation" id="CemeteryPerpetualCareTrustInvestmentsAndObligation">
          <link:definition>999019 - Disclosure - Cemetery Perpetual Care Trust Investments and Obligation</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/MortgageServicingRights" id="MortgageServicingRights">
          <link:definition>999020 - Disclosure - Mortgage Servicing Rights</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/DeferredPolicyAndPre-needContractAcquisitionCostsValueOfBusinessAcquiredAndUnearnedPremiumReserve" id="DeferredPolicyAndPre-needContractAcquisitionCostsValueOfBusinessAcquiredAndUnearnedPremiumReserve">
          <link:definition>999021 - Disclosure - Deferred Policy and Pre-need Contract Acquisition Costs, Value of Business Acquired, and Unearned Premium Reserve</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/DerivativeInstruments" id="DerivativeInstruments">
          <link:definition>999022 - Disclosure - Derivative Instruments</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/FuturePolicyBenefitsAndUnpaidClaims" id="FuturePolicyBenefitsAndUnpaidClaims">
          <link:definition>999023 - Disclosure - Future Policy Benefits and Unpaid Claims</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/PolicyholderAccountBalances" id="PolicyholderAccountBalances">
          <link:definition>999024 - Disclosure - Policyholder Account Balances</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/Reinsurance" id="Reinsurance">
          <link:definition>999025 - Disclosure - Reinsurance</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/IncomeTaxes" id="IncomeTaxes">
          <link:definition>999026 - Disclosure - Income Taxes</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/Equity" id="Equity">
          <link:definition>999027 - Disclosure - Equity</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/EarningsPerShare" id="EarningsPerShare">
          <link:definition>999028 - Disclosure - Earnings Per Share</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/BusinessSegmentInformation" id="BusinessSegmentInformation">
          <link:definition>999029 - Disclosure - Business Segment Information</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/FairValueOfFinancialInstruments" id="FairValueOfFinancialInstruments">
          <link:definition>999030 - Disclosure - Fair Value of Financial Instruments</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/StockCompensationPlans" id="StockCompensationPlans">
          <link:definition>999031 - Disclosure - Stock Compensation Plans</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/CommitmentsAndContingencies" id="CommitmentsAndContingencies">
          <link:definition>999032 - Disclosure - Commitments and Contingencies</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/BasisOfPresentationAndRecentAccountingPronouncementsPolicies" id="BasisOfPresentationAndRecentAccountingPronouncementsPolicies">
          <link:definition>999033 - Disclosure - Basis of Presentation and Recent Accounting Pronouncements (Policies)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/BasisOfPresentationAndRecentAccountingPronouncementsTables" id="BasisOfPresentationAndRecentAccountingPronouncementsTables">
          <link:definition>999034 - Disclosure - Basis of Presentation and Recent Accounting Pronouncements (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/InvestmentsTables" id="InvestmentsTables">
          <link:definition>999035 - Disclosure - Investments (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/LoansHeldForSaleTables" id="LoansHeldForSaleTables">
          <link:definition>999036 - Disclosure - Loans Held for Sale (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ReceivablesTables" id="ReceivablesTables">
          <link:definition>999037 - Disclosure - Receivables (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/RestrictedAssetsTables" id="RestrictedAssetsTables">
          <link:definition>999038 - Disclosure - Restricted Assets (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/CemeteryPerpetualCareTrustInvestmentsAndObligationTables" id="CemeteryPerpetualCareTrustInvestmentsAndObligationTables">
          <link:definition>999039 - Disclosure - Cemetery Perpetual Care Trust Investments and Obligation (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/MortgageServicingRightsTables" id="MortgageServicingRightsTables">
          <link:definition>999040 - Disclosure - Mortgage Servicing Rights (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/DeferredPolicyAndPre-needContractAcquisitionCostsValueOfBusinessAcquiredAndUnearnedPremiumReserveTables" id="DeferredPolicyAndPre-needContractAcquisitionCostsValueOfBusinessAcquiredAndUnearnedPremiumReserveTables">
          <link:definition>999041 - Disclosure - Deferred Policy and Pre-need Contract Acquisition Costs, Value of Business Acquired, and Unearned Premium Reserve (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/DerivativeInstrumentsTables" id="DerivativeInstrumentsTables">
          <link:definition>999042 - Disclosure - Derivative Instruments (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/FuturePolicyBenefitsAndUnpaidClaimsTables" id="FuturePolicyBenefitsAndUnpaidClaimsTables">
          <link:definition>999043 - Disclosure - Future Policy Benefits and Unpaid Claims (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/PolicyholderAccountBalancesTables" id="PolicyholderAccountBalancesTables">
          <link:definition>999044 - Disclosure - Policyholder Account Balances (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/EquityTables" id="EquityTables">
          <link:definition>999045 - Disclosure - Equity (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/EarningsPerShareTables" id="EarningsPerShareTables">
          <link:definition>999046 - Disclosure - Earnings Per Share (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/BusinessSegmentInformationTables" id="BusinessSegmentInformationTables">
          <link:definition>999047 - Disclosure - Business Segment Information (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/FairValueOfFinancialInstrumentsTables" id="FairValueOfFinancialInstrumentsTables">
          <link:definition>999048 - Disclosure - Fair Value of Financial Instruments (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/StockCompensationPlansTables" id="StockCompensationPlansTables">
          <link:definition>999049 - Disclosure - Stock Compensation Plans (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfErrorCorrecetionPriorPeriodAdjustmentsDetails" id="ScheduleOfErrorCorrecetionPriorPeriodAdjustmentsDetails">
          <link:definition>999050 - Disclosure - Schedule of Error Correcetion Prior Period Adjustments (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfInvestmentsDetails" id="ScheduleOfInvestmentsDetails">
          <link:definition>999051 - Disclosure - Schedule of Investments (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfInvestmentsDetailsParenthethical" id="ScheduleOfInvestmentsDetailsParenthethical">
          <link:definition>999052 - Disclosure - Schedule of Investments (Details) (Parenthethical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfFairValueOfFixedMaturitySecuritiesDetails" id="ScheduleOfFairValueOfFixedMaturitySecuritiesDetails">
          <link:definition>999053 - Disclosure - Schedule of Fair Value of Fixed Maturity Securities (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfCreditQualityOfFixedMaturitySecurityPortfolioByNaicDesignationDetails" id="ScheduleOfCreditQualityOfFixedMaturitySecurityPortfolioByNaicDesignationDetails">
          <link:definition>999054 - Disclosure - Schedule of Credit Quality of Fixed Maturity Security Portfolio by NAIC Designation (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAllowanceForCreditLossesOnFixedMaturitySecuritiesAvailableForSaleDetails" id="ScheduleOfAllowanceForCreditLossesOnFixedMaturitySecuritiesAvailableForSaleDetails">
          <link:definition>999055 - Disclosure - Schedule of Allowance for Credit Losses on Fixed Maturity Securities Available for Sale (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfInvestmentsClassifiedByContractualMaturityDateDetails" id="ScheduleOfInvestmentsClassifiedByContractualMaturityDateDetails">
          <link:definition>999056 - Disclosure - Schedule of Investments Classified by Contractual Maturity Date (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfMajorCategoriesOfNetInvestmentIncomeDetails" id="ScheduleOfMajorCategoriesOfNetInvestmentIncomeDetails">
          <link:definition>999057 - Disclosure - Schedule of Major Categories of Net Investment Income (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAssetsOnDepositWithLifeInsuranceDetails" id="ScheduleOfAssetsOnDepositWithLifeInsuranceDetails">
          <link:definition>999058 - Disclosure - Schedule of Assets on Deposit with Life Insurance (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfCommercialRealEstateInvestmentDetails" id="ScheduleOfCommercialRealEstateInvestmentDetails">
          <link:definition>999059 - Disclosure - Schedule of Commercial Real Estate Investment (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfRealEstateOwnedAndOccupiedByCompanyDetails" id="ScheduleOfRealEstateOwnedAndOccupiedByCompanyDetails">
          <link:definition>999060 - Disclosure - Schedule of Real Estate Owned and Occupied by the Company (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfResidentialRealEstateInvestmentDetails" id="ScheduleOfResidentialRealEstateInvestmentDetails">
          <link:definition>999061 - Disclosure - Schedule of Residential Real Estate Investment (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfMortgageLoansHeldForInvestmentDetails" id="ScheduleOfMortgageLoansHeldForInvestmentDetails">
          <link:definition>999062 - Disclosure - Schedule of Mortgage Loans Held for Investment (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAllowanceForLoanLossesDetails" id="ScheduleOfAllowanceForLoanLossesDetails">
          <link:definition>999063 - Disclosure - Schedule of Allowance for Loan Losses (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAgingOfMortgageLoansDetails" id="ScheduleOfAgingOfMortgageLoansDetails">
          <link:definition>999064 - Disclosure - Schedule of Aging of Mortgage Loans (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfCommercialAndResidentialMortgageLoansByCreditQualityIndicatorDetails" id="ScheduleOfCommercialAndResidentialMortgageLoansByCreditQualityIndicatorDetails">
          <link:definition>999065 - Disclosure - Schedule of Commercial and Residential Mortgage Loans By Credit Quality Indicator (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfCommercialAndResidentialMortgageLoansByCreditQualityIndicatorDetailsParenthetical" id="ScheduleOfCommercialAndResidentialMortgageLoansByCreditQualityIndicatorDetailsParenthetical">
          <link:definition>999066 - Disclosure - Schedule of Commercial and Residential Mortgage Loans By Credit Quality Indicator (Details) (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfResidentialConstructionMortgageLoansDetails" id="ScheduleOfResidentialConstructionMortgageLoansDetails">
          <link:definition>999067 - Disclosure - Schedule of Residential Construction Mortgage Loans (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAgingOfInsuranceAssignmentsDetails" id="ScheduleOfAgingOfInsuranceAssignmentsDetails">
          <link:definition>999068 - Disclosure - Schedule of Aging of Insurance Assignments (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAllowanceForCreditLossesForInsuranceAssignmentsDetails" id="ScheduleOfAllowanceForCreditLossesForInsuranceAssignmentsDetails">
          <link:definition>999069 - Disclosure - Schedule of Allowance for Credit Losses for Insurance Assignments (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfCarryingValueOfInvestmentsDetails" id="ScheduleOfCarryingValueOfInvestmentsDetails">
          <link:definition>999070 - Disclosure - Schedule of Carrying Value of Investments (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfCarryingValueOfInvestmentsDetailsParenthetical" id="ScheduleOfCarryingValueOfInvestmentsDetailsParenthetical">
          <link:definition>999071 - Disclosure - Schedule of Carrying Value of Investments (Details) (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfGainLossOnInvestmentsDetails" id="ScheduleOfGainLossOnInvestmentsDetails">
          <link:definition>999072 - Disclosure - Schedule of Gain (Loss) on Investments (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAccruedInvestmentIncomeDetails" id="ScheduleOfAccruedInvestmentIncomeDetails">
          <link:definition>999073 - Disclosure - Schedule of Accrued Investment Income (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/InvestmentsDetailsNarrative" id="InvestmentsDetailsNarrative">
          <link:definition>999074 - Disclosure - Investments (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAggregateFairValueLoansHeldForSaleDetails" id="ScheduleOfAggregateFairValueLoansHeldForSaleDetails">
          <link:definition>999075 - Disclosure - Schedule of Aggregate Fair Value Loans Held for Sale (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfMortgageFeeIncomeForLoansHeldForSaleDetails" id="ScheduleOfMortgageFeeIncomeForLoansHeldForSaleDetails">
          <link:definition>999076 - Disclosure - Schedule of Mortgage Fee Income for Loans Held for Sale (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/SummaryOfLoanLossReserveIncludedInOtherLiabilitiesAndAccruedExpensesDetails" id="SummaryOfLoanLossReserveIncludedInOtherLiabilitiesAndAccruedExpensesDetails">
          <link:definition>999077 - Disclosure - Summary of Loan Loss Reserve Included in Other Liabilities and Accrued Expenses (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/LoansHeldForSaleDetailsNarrative" id="LoansHeldForSaleDetailsNarrative">
          <link:definition>999078 - Disclosure - Loans Held for Sale (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfReceivableDetails" id="ScheduleOfReceivableDetails">
          <link:definition>999079 - Disclosure - Schedule of Receivable (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAllowanceForCreditLossesDetails" id="ScheduleOfAllowanceForCreditLossesDetails">
          <link:definition>999080 - Disclosure - Schedule of Allowance for Credit Losses (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfOpeningAndClosingBalancesOfReceivablesContractAssetsAndContractLiabilitiesDetails" id="ScheduleOfOpeningAndClosingBalancesOfReceivablesContractAssetsAndContractLiabilitiesDetails">
          <link:definition>999081 - Disclosure - Schedule of Opening and Closing Balances of Receivables, Contract Assets and Contract Liabilities (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfRevenuesOfCemeteryAndMortuaryContractsDetails" id="ScheduleOfRevenuesOfCemeteryAndMortuaryContractsDetails">
          <link:definition>999082 - Disclosure - Schedule of Revenues of the Cemetery and Mortuary Contracts (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfRestrictedAssetsInCemeteryAndMortuaryEndowmentCareAndPreNeedMerchandiseFundsDetails" id="ScheduleOfRestrictedAssetsInCemeteryAndMortuaryEndowmentCareAndPreNeedMerchandiseFundsDetails">
          <link:definition>999083 - Disclosure - Schedule of Restricted Assets in Cemetery and Mortuary Endowment Care and Pre need Merchandise Funds (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfRestrictedAssetsInCemeteryAndMortuaryEndowmentCareAndPreNeedMerchandiseFundsDetailsParenthetical" id="ScheduleOfRestrictedAssetsInCemeteryAndMortuaryEndowmentCareAndPreNeedMerchandiseFundsDetailsParenthetical">
          <link:definition>999084 - Disclosure - Schedule of Restricted Assets in Cemetery and Mortuary Endowment Care and Pre need Merchandise Funds (Details) (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ReceivablesDetailsNarrative" id="ReceivablesDetailsNarrative">
          <link:definition>999085 - Disclosure - Receivables (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/RestrictedAssetsDetailsNarrative" id="RestrictedAssetsDetailsNarrative">
          <link:definition>999086 - Disclosure - Restricted Assets (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfInvestmentsAndObligationDetails" id="ScheduleOfInvestmentsAndObligationDetails">
          <link:definition>999087 - Disclosure - Schedule of Investments and Obligation (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/CemeteryPerpetualCareTrustInvestmentsAndObligationDetailsNarrative" id="CemeteryPerpetualCareTrustInvestmentsAndObligationDetailsNarrative">
          <link:definition>999088 - Disclosure - Cemetery Perpetual Care Trust Investments and Obligation (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfMortgageServicingRightsDetails" id="ScheduleOfMortgageServicingRightsDetails">
          <link:definition>999089 - Disclosure - Schedule of Mortgage Servicing Rights (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfFinite-livedIntangibleAssetsFutureAmortizationExpenseMortgageServicingRightsDetails" id="ScheduleOfFinite-livedIntangibleAssetsFutureAmortizationExpenseMortgageServicingRightsDetails">
          <link:definition>999090 - Disclosure - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense, Mortgage Servicing Rights (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfOtherRevenuesDetails" id="ScheduleOfOtherRevenuesDetails">
          <link:definition>999091 - Disclosure - Schedule of Other Revenues (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/SummaryOfUnpaidPrincipalBalancesOfServicingPortfolioDetails" id="SummaryOfUnpaidPrincipalBalancesOfServicingPortfolioDetails">
          <link:definition>999092 - Disclosure - Summary of Unpaid Principal Balances of the Servicing Portfolio (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAssumptionsUsedInDeterminingMsrValueDetails" id="ScheduleOfAssumptionsUsedInDeterminingMsrValueDetails">
          <link:definition>999093 - Disclosure - Schedule of Assumptions Used in Determining MSR Value (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfRollForwardForLinesOfBusinessThatContainDacBalancesDetails" id="ScheduleOfRollForwardForLinesOfBusinessThatContainDacBalancesDetails">
          <link:definition>999094 - Disclosure - Schedule of Roll Forward for the Lines of Business that Contain DAC Balances (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfRollForwardForLinesOfBusinessThatContainVobaBalancesDetails" id="ScheduleOfRollForwardForLinesOfBusinessThatContainVobaBalancesDetails">
          <link:definition>999095 - Disclosure - Schedule of Roll Forward for the Lines of Business That Contain VOBA Balances (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfBalanceAndChangesInUnearnedPremiumReserveDetails" id="ScheduleOfBalanceAndChangesInUnearnedPremiumReserveDetails">
          <link:definition>999096 - Disclosure - Schedule of Balance and the Changes in Unearned Premium Reserve (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfDerivativeAssetsAtFairValueDetails" id="ScheduleOfDerivativeAssetsAtFairValueDetails">
          <link:definition>999097 - Disclosure - Schedule of Derivative Assets at Fair Value (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfGainsAndLossesOnDerivativesDetails" id="ScheduleOfGainsAndLossesOnDerivativesDetails">
          <link:definition>999098 - Disclosure - Schedule of Gains and Losses on Derivatives (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfLiabilityForFuturePolicyBenefitsByProductSegmentDetails" id="ScheduleOfLiabilityForFuturePolicyBenefitsByProductSegmentDetails">
          <link:definition>999099 - Disclosure - Schedule of Liability for Future Policy Benefits, by Product Segment (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfBalancesOfAndChangesInLiabilityForFuturePolicyBenefitsDetails" id="ScheduleOfBalancesOfAndChangesInLiabilityForFuturePolicyBenefitsDetails">
          <link:definition>999100 - Disclosure - Schedule of Balances of and Changes in the Liability for Future Policy Benefits (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAmountOfUndiscountedAndDiscountedExpectedGrossPremiumsAndExpectedFutureBenefitPaymentsDetails" id="ScheduleOfAmountOfUndiscountedAndDiscountedExpectedGrossPremiumsAndExpectedFutureBenefitPaymentsDetails">
          <link:definition>999101 - Disclosure - Schedule of Amount of Undiscounted and Discounted Expected Gross Premiums and Expected Future Benefit Payments (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfGrossPremiumsAndInterestAccretionDetails" id="ScheduleOfGrossPremiumsAndInterestAccretionDetails">
          <link:definition>999102 - Disclosure - Schedule of Gross Premiums and Interest Accretion (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfWeighted-averageInterestRatesDetails" id="ScheduleOfWeighted-averageInterestRatesDetails">
          <link:definition>999103 - Disclosure - Schedule of Weighted-average Interest Rates (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfWeightedAverageDurationOfLiabilityDetails" id="ScheduleOfWeightedAverageDurationOfLiabilityDetails">
          <link:definition>999104 - Disclosure - Schedule of Weighted Average Duration of the Liability (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfBalancesOfAndChangesInDeferredProfitLiabilityForTraditionalAndLimited-PaymentLifeDetails" id="ScheduleOfBalancesOfAndChangesInDeferredProfitLiabilityForTraditionalAndLimited-PaymentLifeDetails">
          <link:definition>999105 - Disclosure - Schedule of Balances of and Changes in Deferred Profit Liability for Traditional and Limited- Payment Life (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfLiabilityForReportedButUnpaidClaimsAndIncurredButNotReportedClaimsDetails" id="ScheduleOfLiabilityForReportedButUnpaidClaimsAndIncurredButNotReportedClaimsDetails">
          <link:definition>999106 - Disclosure - Schedule of Liability for Reported but Unpaid Claims and Incurred but not Reported Claims (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfReconciliationOfPolicyholderAccountBalancesAndRelatedReceivableFromReinsurersToConsolidatedBalanceSheetsDetails" id="ScheduleOfReconciliationOfPolicyholderAccountBalancesAndRelatedReceivableFromReinsurersToConsolidatedBalanceSheetsDetails">
          <link:definition>999107 - Disclosure - Schedule of Reconciliation of Policyholder Account Balances and the Related Receivable from Reinsurers to the Consolidated Balance Sheets (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfBalancesAndChangesInPolicyholderAccountBalancesDetails" id="ScheduleOfBalancesAndChangesInPolicyholderAccountBalancesDetails">
          <link:definition>999108 - Disclosure - Schedule of Balances and Changes in Policyholder Account Balances (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfBalancesOfAndChangesInDeferredProfitLiabilityForFixedAnnuitiesDetails" id="ScheduleOfBalancesOfAndChangesInDeferredProfitLiabilityForFixedAnnuitiesDetails">
          <link:definition>999109 - Disclosure - Schedule of Balances of and Changes in Deferred Profit Liability for Fixed Annuities (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAccountValuesByRangeOfGuaranteedMinimumCreditingRatesAndRelatedRangeOfDifferenceDetails" id="ScheduleOfAccountValuesByRangeOfGuaranteedMinimumCreditingRatesAndRelatedRangeOfDifferenceDetails">
          <link:definition>999110 - Disclosure - Schedule of Account Values by Range of Guaranteed Minimum Crediting Rates and the Related Range of Difference (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ReinsuranceDetailsNarrative" id="ReinsuranceDetailsNarrative">
          <link:definition>999111 - Disclosure - Reinsurance (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/IncomeTaxesDetailsNarrative" id="IncomeTaxesDetailsNarrative">
          <link:definition>999112 - Disclosure - Income Taxes (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/SummaryOfActivitiesInSharesOfCapitalStockDetails" id="SummaryOfActivitiesInSharesOfCapitalStockDetails">
          <link:definition>999113 - Disclosure - Summary of Activities in Shares of Capital Stock (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfChangesInAccumulatedOtherComprehensiveIncomeLossDetails" id="ScheduleOfChangesInAccumulatedOtherComprehensiveIncomeLossDetails">
          <link:definition>999114 - Disclosure - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfAccumulatedBalancesOfOtherComprehensiveIncomeDetails" id="ScheduleOfAccumulatedBalancesOfOtherComprehensiveIncomeDetails">
          <link:definition>999115 - Disclosure - Schedule of Accumulated Balances of Other Comprehensive Income (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfEarningsPerShareBasicAndDilutedDetails" id="ScheduleOfEarningsPerShareBasicAndDilutedDetails">
          <link:definition>999116 - Disclosure - Schedule of Earnings Per Share, Basic and Diluted (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/EarningsPerShareDetailsNarrative" id="EarningsPerShareDetailsNarrative">
          <link:definition>999117 - Disclosure - Earnings Per Share (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfRevenuesAndExpensesByReportableSegmentDetails" id="ScheduleOfRevenuesAndExpensesByReportableSegmentDetails">
          <link:definition>999118 - Disclosure - Schedule of Revenues and Expenses by Reportable Segment (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/BusinessSegmentInformationDetailsNarrative" id="BusinessSegmentInformationDetailsNarrative">
          <link:definition>999119 - Disclosure - Business Segment Information (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails" id="ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails">
          <link:definition>999120 - Disclosure - Schedule of Fair Value Assets and Liabilities Measured on a Recurring Basis (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfLevel3AssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" id="ScheduleOfLevel3AssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails">
          <link:definition>999121 - Disclosure - Schedule of Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfChangesInConsolidatedBalanceSheetLineItemsMeasuredUsingLevel3InputsDetails" id="ScheduleOfChangesInConsolidatedBalanceSheetLineItemsMeasuredUsingLevel3InputsDetails">
          <link:definition>999122 - Disclosure - Schedule of Changes in the Consolidated Balance Sheet Line Items Measured Using Level 3 Inputs (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfFinancialInstrumentsCarriedAtOtherThanFairValueDetails" id="ScheduleOfFinancialInstrumentsCarriedAtOtherThanFairValueDetails">
          <link:definition>999123 - Disclosure - Schedule of Financial Instruments Carried at Other Than Fair Value (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/FairValueOfFinancialInstrumentsDetailsNarrative" id="FairValueOfFinancialInstrumentsDetailsNarrative">
          <link:definition>999124 - Disclosure - Fair Value of Financial Instruments (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfActivityOfStockOptionPlansDetails" id="ScheduleOfActivityOfStockOptionPlansDetails">
          <link:definition>999125 - Disclosure - Schedule of Activity of Stock Option Plans (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfActivityOfStockOptionPlansDetailsParenthetical" id="ScheduleOfActivityOfStockOptionPlansDetailsParenthetical">
          <link:definition>999126 - Disclosure - Schedule of Activity of Stock Option Plans (Details) (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/ScheduleOfActivityRestrictedStockUnitsDetails" id="ScheduleOfActivityRestrictedStockUnitsDetails">
          <link:definition>999127 - Disclosure - Schedule of Activity Restricted Stock Units (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/StockCompensationPlansDetailsNarrative" id="StockCompensationPlansDetailsNarrative">
          <link:definition>999128 - Disclosure - Stock Compensation Plans (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://securitynational.com/role/CommitmentsAndContingenciesDetailsNarrative" id="CommitmentsAndContingenciesDetailsNarrative">
          <link:definition>999129 - Disclosure - Commitments and Contingencies (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:linkbaseRef xlink:type="simple" xlink:href="snfca-20260331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Presentation Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="snfca-20260331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Label Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="snfca-20260331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Calculation Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="snfca-20260331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links" />
      </appinfo>
    </annotation>
    <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
    <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
    <import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd" />
    <import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd" />
    <import namespace="http://fasb.org/us-types/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-types-2026.xsd" />
    <import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
    <import namespace="http://xbrl.sec.gov/ecd/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd" />
    <import namespace="http://xbrl.sec.gov/country/2026" schemaLocation="https://xbrl.sec.gov/country/2026/country-2026.xsd" />
    <import namespace="http://xbrl.sec.gov/stpr/2026" schemaLocation="https://xbrl.sec.gov/stpr/2026/stpr-2026.xsd" />
    <import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd" />
    <import namespace="http://fasb.org/srt-types/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-types-2026.xsd" />
    <element id="SNFCA_IndustrialMiscellaneousAndAllOtherMember" name="IndustrialMiscellaneousAndAllOtherMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_EquitySecuritiesOneMember" name="EquitySecuritiesOneMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ResidentialConstructionMember" name="ResidentialConstructionMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CommercialMember" name="CommercialMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ActivityStockDueMember" name="ActivityStockDueMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CorporateSecuritiesMember" name="CorporateSecuritiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_RestrictedAssetsMember" name="RestrictedAssetsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryPerpectualCareObligationMember" name="CemeteryPerpectualCareObligationMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FiveHundredAndSixSecuritiesMember" name="FiveHundredAndSixSecuritiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ThreeHundredAndThirtyEightSecuritiesMember" name="ThreeHundredAndThirtyEightSecuritiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FederalHomeLoanBankOfDesMoinesAndDallasMember" name="FederalHomeLoanBankOfDesMoinesAndDallasMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CommercialRealEstateOneMember" name="CommercialRealEstateOneMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_HHHRealEstateLLCMember" name="HHHRealEstateLLCMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SNOquirrhLLCMember" name="SNOquirrhLLCMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SNTownsLLCMember" name="SNTownsLLCMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteriesAndMortuariesMember" name="CemeteriesAndMortuariesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NAICClass1DesignationMember" name="NAICClass1DesignationMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NAICClass2DesignationMember" name="NAICClass2DesignationMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NAICClass3DesignationMember" name="NAICClass3DesignationMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NAICClass4DesignationMember" name="NAICClass4DesignationMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NAICClass5DesignationMember" name="NAICClass5DesignationMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NAICClass6DesignationMember" name="NAICClass6DesignationMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NationalAssociationOfInsuranceCommissionersMember" name="NationalAssociationOfInsuranceCommissionersMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DueInOneYearMember" name="DueInOneYearMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DueInTwoToFiveYearsMember" name="DueInTwoToFiveYearsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DueInFiveToTenYearsMember" name="DueInFiveToTenYearsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DueInMoreThanTenYearsMember" name="DueInMoreThanTenYearsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LifeInsuranceRegulatoryAuthoritiesMember" name="LifeInsuranceRegulatoryAuthoritiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ThirdPartyReinsuranceAgreementsMember" name="ThirdPartyReinsuranceAgreementsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageOperationsMember" name="MortgageOperationsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LifeInsuranceOperationsMember" name="LifeInsuranceOperationsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LandDevelopmentsMember" name="LandDevelopmentsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OtherStatesMember" name="OtherStatesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PastDue30To59DaysMember" name="PastDue30To59DaysMember" abstract="true" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PastDue60To89DaysMember" name="PastDue60To89DaysMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PastDue90OrMoreDaysMember" name="PastDue90OrMoreDaysMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_InForeclosureMember" name="InForeclosureMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_TotalPastDueMember" name="TotalPastDueMember" abstract="true" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CurrentMember" name="CurrentMember" abstract="true" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NetMortgageLoansMember" name="NetMortgageLoansMember" abstract="true" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LtvLessThan65PercentMember" name="LtvLessThan65PercentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_Ltv65To80PercentMember" name="Ltv65To80PercentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LtvGreaterThan80PercentMember" name="LtvGreaterThan80PercentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DSCRGreaterThanOnePointTwoZeroXMember" name="DSCRGreaterThanOnePointTwoZeroXMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DSCROneXToOnePointTwoZeroXMember" name="DSCROneXToOnePointTwoZeroXMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DSCRLessThanOneXMember" name="DSCRLessThanOneXMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ResidentialConstructionMortgageLoansMember" name="ResidentialConstructionMortgageLoansMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OverDue90OrMoreDaysMember" name="OverDue90OrMoreDaysMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_InsuranceAssignmentsMember" name="InsuranceAssignmentsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NetInsuranceAssignmentsMember" name="NetInsuranceAssignmentsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FixedMaturitySecuritiesMember" name="FixedMaturitySecuritiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_RealEstateHeldForInvestmentAndSaleMember" name="RealEstateHeldForInvestmentAndSaleMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OtherAssetMember" name="OtherAssetMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_EquitySecurities1Member" name="EquitySecurities1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageLoansRealEstateMember" name="MortgageLoansRealEstateMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_RealEstate1Member" name="RealEstate1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyStudentAndOtherLoansMember" name="PolicyStudentAndOtherLoansMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OtherInvestments1Member" name="OtherInvestments1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CashAndCashEquivalents1Member" name="CashAndCashEquivalents1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FixedMaturitySecuritiesAvailableForSaleMember" name="FixedMaturitySecuritiesAvailableForSaleMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageLoansHeldForInvestmentMember" name="MortgageLoansHeldForInvestmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_RealEstateHeldForInvestmentMember" name="RealEstateHeldForInvestmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OtherInvestmentMember" name="OtherInvestmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SecurityNationalLifeInsuranceMember" name="SecurityNationalLifeInsuranceMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ThreeSecuritiesMember" name="ThreeSecuritiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_TwoSecuritiesMember" name="TwoSecuritiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageServicingRightsMember" name="MortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_TraditionalLifeMember" name="TraditionalLifeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PreneedContractsMember" name="PreneedContractsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LoanCommitmentsMember" name="LoanCommitmentsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NetDerivativesLoanCommitmentsMember" name="NetDerivativesLoanCommitmentsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_TraditionalAndLimitedPaymentLifeMember" name="TraditionalAndLimitedPaymentLifeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DeferredProfitLiabilityTraditionalAndLimitedPaymentLifeMember" name="DeferredProfitLiabilityTraditionalAndLimitedPaymentLifeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AccidentAndHealthMember" name="AccidentAndHealthMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OtherPolicyholderFundsMember" name="OtherPolicyholderFundsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ReportedButUnpaidClaimsMember" name="ReportedButUnpaidClaimsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_IncurredButNotReportedClaimsMember" name="IncurredButNotReportedClaimsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OriginalDiscountRateMember" name="OriginalDiscountRateMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CurrentDiscountRateMember" name="CurrentDiscountRateMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DeferredProfitLiabilityMember" name="DeferredProfitLiabilityMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FuturePolicyBenefitsFixedAnnuitiesMember" name="FuturePolicyBenefitsFixedAnnuitiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFromLessThan100Member" name="PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFromLessThan100Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom100To199Member" name="PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom100To199Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryPerpetualCareTrustInvestmentsMember" name="CemeteryPerpetualCareTrustInvestmentsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FuturePolicyBenefitsMember" name="FuturePolicyBenefitsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LifeInsuranceMember" name="LifeInsuranceMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryAndMortuaryMember" name="CemeteryAndMortuaryMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageMember" name="MortgageMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LoansHeldForSale1Member" name="LoansHeldForSale1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FixedMaturitySecuritiesAvailableForSale1Member" name="FixedMaturitySecuritiesAvailableForSale1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageLoansNet1Member" name="MortgageLoansNet1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyLoanMember" name="PolicyLoanMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_RestrictedAssets1Member" name="RestrictedAssets1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryPerpetualCareTrustInvestments2Member" name="CemeteryPerpetualCareTrustInvestments2Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_BankAndOtherLoansPayableMember" name="BankAndOtherLoansPayableMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyholderAccountBalancesUniversalLifeMember" name="PolicyholderAccountBalancesUniversalLifeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_StockOptionPlansMember" name="StockOptionPlansMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_USBankMember" name="USBankMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_WesternAllianceBankMember" name="WesternAllianceBankMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_JPMorganChaseBankMember" name="JPMorganChaseBankMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyAndOtherLoansReceivableNet1" name="PolicyAndOtherLoansReceivableNet1" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryPerpetualCareTrustInvestments" name="CemeteryPerpetualCareTrustInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryPerpetualCareTrustObligation" name="CemeteryPerpetualCareTrustObligation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AggregateFairValueRestrictedAssets" name="AggregateFairValueRestrictedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AggregateFairValueCemeteryPerpetualCareTrustInvestments" name="AggregateFairValueCemeteryPerpetualCareTrustInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageFeeIncome" name="MortgageFeeIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NetFuneralHomeAndCemeterySales" name="NetFuneralHomeAndCemeterySales" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_RentAndRentRelated" name="RentAndRentRelated" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DepreciationOnPropertyAndEquipment" name="DepreciationOnPropertyAndEquipment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CostOfFundingMortgageLoans" name="CostOfFundingMortgageLoans" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnRestrictedAssetsDuringPeriodBeforeTax" name="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnRestrictedAssetsDuringPeriodBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnCemeteryPerpetualCareTrustInvestmentsDuringPeriodBeforeTax" name="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnCemeteryPerpetualCareTrustInvestmentsDuringPeriodBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PaymentsToAcquireCemeteryPerpetualCareTrustInvestments" name="PaymentsToAcquireCemeteryPerpetualCareTrustInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ProceedsFromSaleAndMaturityofCemeteryPerpetualCareTrustInvestment" name="ProceedsFromSaleAndMaturityofCemeteryPerpetualCareTrustInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CashPaidDuringYearAbstract" name="CashPaidDuringYearAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_BenefitPlansFundedWithTreasuryStock" name="BenefitPlansFundedWithTreasuryStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_TransferFromFixedMaturitySecuritiesAvailableForSaleToOtherInvestments" name="TransferFromFixedMaturitySecuritiesAvailableForSaleToOtherInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ReconciliationOnRestrictedAssets" name="ReconciliationOnRestrictedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ReconciliationCemeteryPerpetualCareTrustInvestments" name="ReconciliationCemeteryPerpetualCareTrustInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DisclosureBasisOfPresentationAndRecentAccountingPronouncementsAbstract" name="DisclosureBasisOfPresentationAndRecentAccountingPronouncementsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_BasisOfPresentationAndRecentAccountingPronouncementsDisclosureTextBlock" name="BasisOfPresentationAndRecentAccountingPronouncementsDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DisclosureLoansHeldForSaleAbstract" name="DisclosureLoansHeldForSaleAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LoansHeldForSaleDisclosureTextBlock" name="LoansHeldForSaleDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DisclosureCemeteryPerpetualCareTrustInvestmentsAndObligationAbstract" name="DisclosureCemeteryPerpetualCareTrustInvestmentsAndObligationAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryPerpetualCareTrustInvestmentsAndObligationDisclosureTextBlock" name="CemeteryPerpetualCareTrustInvestmentsAndObligationDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfFairValueOfFixedMaturitySecuritiesTableTextBlock" name="ScheduleOfFairValueOfFixedMaturitySecuritiesTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleofCreditQualityofFixedMaturitySecurityPortfoliobyNAICDesignationTableTextBlock" name="ScheduleofCreditQualityofFixedMaturitySecurityPortfoliobyNAICDesignationTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfMajorCategoriesOfNetInvestmentIncomeTableTextBlock" name="ScheduleOfMajorCategoriesOfNetInvestmentIncomeTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ResidentialRealEstateInvestmentTextBlock" name="ResidentialRealEstateInvestmentTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfAllowanceForLoanLossesTableTextBlock" name="ScheduleOfAllowanceForLoanLossesTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfAgingOfMortgageLoansTextBlock" name="ScheduleOfAgingOfMortgageLoansTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfResidentialConstructionMortgageLoansTableTextBlock" name="ScheduleOfResidentialConstructionMortgageLoansTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfAgingOfInsuranceAssignmentsTableTextBlock" name="ScheduleOfAgingOfInsuranceAssignmentsTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfAllowanceForCreditLossesTableTextBlock" name="ScheduleOfAllowanceForCreditLossesTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AggregateFairValueLoansHeldForSaleScheduleTableTextBlock" name="AggregateFairValueLoansHeldForSaleScheduleTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfMortgageFeeIncomeForLoansHeldForSaleTextBlock" name="ScheduleOfMortgageFeeIncomeForLoansHeldForSaleTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfLoanLossReserveWhichIsIncludedInOtherLiabilitiesAndAccruedExpensesTextBlock" name="ScheduleOfLoanLossReserveWhichIsIncludedInOtherLiabilitiesAndAccruedExpensesTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfReceivablesTextBlock" name="ScheduleOfReceivablesTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfOpeningAndClosingBalancesOfReceivablesContractAssetsAndContractLiabilitiesTextBlock" name="ScheduleOfOpeningAndClosingBalancesOfReceivablesContractAssetsAndContractLiabilitiesTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfRestrictedAssetsInCemeteryAndMortuaryEndowmentCareAndPreNeedMerchandiseFundsTextBlock" name="ScheduleOfRestrictedAssetsInCemeteryAndMortuaryEndowmentCareAndPreNeedMerchandiseFundsTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfMortgageServicingRightsTextBlock" name="ScheduleOfMortgageServicingRightsTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SummaryOfUnpaidPrincipalBalancesOfTheServicingPortfolioTextBlock" name="SummaryOfUnpaidPrincipalBalancesOfTheServicingPortfolioTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AssumptionsUsedInDeterminingMsrValueTextBlock" name="AssumptionsUsedInDeterminingMsrValueTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfBalanceAndTheChangesInUnearnedPremiumReserveTableTextBlock" name="ScheduleOfBalanceAndTheChangesInUnearnedPremiumReserveTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfGainsAndLossesOnDerivativesTableTextBlock" name="ScheduleOfGainsAndLossesOnDerivativesTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfBalancesOfAndChangesInTheLiabilityForFuturePolicyBenefitsTextBlock" name="ScheduleOfBalancesOfAndChangesInTheLiabilityForFuturePolicyBenefitsTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfAmountOfUndiscountedAndDiscountedExpectedGrossPremiumsAndExpectedFutureBenefitPaymentsTableTextBlock" name="ScheduleOfAmountOfUndiscountedAndDiscountedExpectedGrossPremiumsAndExpectedFutureBenefitPaymentsTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfGrossPremiumsAndInterestAccretionTableTextBlock" name="ScheduleOfGrossPremiumsAndInterestAccretionTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfWeightedAverageInterestRatesTableTextBlock" name="ScheduleOfWeightedAverageInterestRatesTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfWeightedAverageDurationOfTheLiabilityTableTextBlock" name="ScheduleOfWeightedAverageDurationOfTheLiabilityTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfBalancesOfAndChangesInDeferredProfitLiabilityForTraditionalAndLimitedPaymentLifeTableTextBlock" name="ScheduleOfBalancesOfAndChangesInDeferredProfitLiabilityForTraditionalAndLimitedPaymentLifeTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfReconciliationOfPolicyholderAccountBalancesAndTheRelatedReceivableFromReinsurersToTheConsolidatedBalanceSheetsTableTextBlock" name="ScheduleOfReconciliationOfPolicyholderAccountBalancesAndTheRelatedReceivableFromReinsurersToTheConsolidatedBalanceSheetsTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfBalancesOfAndChangesInDeferredProfitLiabilityTableTextBlock" name="ScheduleOfBalancesOfAndChangesInDeferredProfitLiabilityTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfChangesInAccumulatedOtherComprehensiveIncomeTextBlock" name="ScheduleOfChangesInAccumulatedOtherComprehensiveIncomeTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AccumulatedBalancesOfOtherComprehensiveIncomeTextBlock" name="AccumulatedBalancesOfOtherComprehensiveIncomeTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfChangesInTheConsolidatedBalanceSheetLineItemsMeasuredUsingLevel3InputsTableTextBlock" name="ScheduleOfChangesInTheConsolidatedBalanceSheetLineItemsMeasuredUsingLevel3InputsTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfFinancialInstrumentsCarriedAtOtherThanFairValueTableTextBlock" name="ScheduleOfFinancialInstrumentsCarriedAtOtherThanFairValueTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfErrorCorrecetionPriorPeriodAdjustmentsAbstract" name="ScheduleOfErrorCorrecetionPriorPeriodAdjustmentsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfErrorCorrecetionPriorPeriodAdjustmentsTable" name="ScheduleOfErrorCorrecetionPriorPeriodAdjustmentsTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SNFCA_MortgageLoansOnRealEstateAndConstructionUnamortizedDeferredLoanFeesNet" name="MortgageLoansOnRealEstateAndConstructionUnamortizedDeferredLoanFeesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageLoansOnRealEstateAndConstructionDiscount" name="MortgageLoansOnRealEstateAndConstructionDiscount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyLoansAmortizedCost" name="PolicyLoansAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_InsuranceAssignmentsAmortizedCost" name="InsuranceAssignmentsAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OtherInvestmentsAmortizedCost" name="OtherInvestmentsAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfInvestmentsParenthethicalAbstract" name="ScheduleOfInvestmentsParenthethicalAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfInvestmentsParenthethicalTable" name="ScheduleOfInvestmentsParenthethicalTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SNFCA_DebtSecuritiesAvailableForSaleAllowancesForCreditLossPeriodIncreaseDecrease" name="DebtSecuritiesAvailableForSaleAllowancesForCreditLossPeriodIncreaseDecrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ProceedsReceivedFromSaleOfFixedMaturityAvailableForSaleSecurities" name="ProceedsReceivedFromSaleOfFixedMaturityAvailableForSaleSecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_TotalSquareFootage" name="TotalSquareFootage" nillable="true" xbrli:periodType="instant" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfRealEstateOwnedAndOccupiedByCompanyAbstract" name="ScheduleOfRealEstateOwnedAndOccupiedByCompanyAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfRealEstateOwnedAndOccupiedByCompanyTable" name="ScheduleOfRealEstateOwnedAndOccupiedByCompanyTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SNFCA_ApproximateSquareFootage" name="ApproximateSquareFootage" nillable="true" xbrli:periodType="instant" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SquareFootageOccupiedByTheCompany" name="SquareFootageOccupiedByTheCompany" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LotsAvailableForSale" name="LotsAvailableForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LotsToBeDeveloped" name="LotsToBeDeveloped" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageLoansPercentage" name="MortgageLoansPercentage" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AllowanceForCreditLossesProvision" name="AllowanceForCreditLossesProvision" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AllowanceForCreditLossesChargeOffs" name="AllowanceForCreditLossesChargeOffs" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageLoansDuringPeriod" name="MortgageLoansDuringPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_InsuranceAssignmentsDuringPeriod" name="InsuranceAssignmentsDuringPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AllowanceForCreditLossesPremiumsAndOtherReceivablesChangeInProvision" name="AllowanceForCreditLossesPremiumsAndOtherReceivablesChangeInProvision" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AllowanceForCreditLossesPremiumsAndOtherReceivablesChargeOffs" name="AllowanceForCreditLossesPremiumsAndOtherReceivablesChargeOffs" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_GrossRealizedGains" name="GrossRealizedGains" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_GrossRealizedLosses" name="GrossRealizedLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_GainLossOnInvestmentsAndOtherAssets" name="GainLossOnInvestmentsAndOtherAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_GrossInvestmentIncome" name="GrossInvestmentIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AverageMarketValueOverAmortizedCost" name="AverageMarketValueOverAmortizedCost" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DebtSecuritiesAvailableForSalePercentInvestmentGrade" name="DebtSecuritiesAvailableForSalePercentInvestmentGrade" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageLoansAmortizationPeriod" name="MortgageLoansAmortizationPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_InterestNotAccruedOnNonPerformingLoans" name="InterestNotAccruedOnNonPerformingLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LoanCommitmentRanges" name="LoanCommitmentRanges" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AggregateFairValueLoansHeldForSale" name="AggregateFairValueLoansHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AggregateUnpaidPrincipalBalanceLoansHeldForSale" name="AggregateUnpaidPrincipalBalanceLoansHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_UnrealizedGainLoansHeldForSale" name="UnrealizedGainLoansHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LoanFees" name="LoanFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SecondaryGains" name="SecondaryGains" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ChangeInFairValueOfLoanCommitments" name="ChangeInFairValueOfLoanCommitments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ChangeInFairValueOfLoanHeldForSale" name="ChangeInFairValueOfLoanHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ProvisionForLoanLossReserve" name="ProvisionForLoanLossReserve" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_BeginningLoanLossReserve" name="BeginningLoanLossReserve" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LoanLossReserveProvisionsForLoss" name="LoanLossReserveProvisionsForLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LoanLossReserveAdditionalProvisions" name="LoanLossReserveAdditionalProvisions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LoanLossReserveChargeOffs" name="LoanLossReserveChargeOffs" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_EndingLoanLossReserve" name="EndingLoanLossReserve" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LoanIncreasePerPoint" name="LoanIncreasePerPoint" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AmountOfLoanIncreasedPerPoint" name="AmountOfLoanIncreasedPerPoint" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ReceivablesFromSalesAgents" name="ReceivablesFromSalesAgents" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_InsurancePremiumsDue" name="InsurancePremiumsDue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AllowanceForDoubtfulAccountsReceivableChargeOffs" name="AllowanceForDoubtfulAccountsReceivableChargeOffs" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfRevenuesofCemeteryAndMortuaryContractsAbstract" name="ScheduleOfRevenuesofCemeteryAndMortuaryContractsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ScheduleOfRevenuesofCemeteryAndMortuaryContractsTable" name="ScheduleOfRevenuesofCemeteryAndMortuaryContractsTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SNFCA_NetMortuaryAndCemeterySales" name="NetMortuaryAndCemeterySales" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AggregateFairValueAllowanceForCreditLosses" name="AggregateFairValueAllowanceForCreditLosses" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AggregateEstimatedFairValueAllowanceForCreditLosses" name="AggregateEstimatedFairValueAllowanceForCreditLosses" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryPerpetualCareObligation" name="CemeteryPerpetualCareObligation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_TrustInvestmentsinExcessofTrustObligations" name="TrustInvestmentsinExcessofTrustObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SaleOfMortgageServicingRights" name="SaleOfMortgageServicingRights" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MortgageServicingRightsWriteDownOtherThanTemporaryImpairment" name="MortgageServicingRightsWriteDownOtherThanTemporaryImpairment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ValuationAllowanceImpairmentOfMortgageServicingRights" name="ValuationAllowanceImpairmentOfMortgageServicingRights" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour" name="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_ServicingUnpaidPrincipalBalance" name="ServicingUnpaidPrincipalBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PrepaymentSpeeds" name="PrepaymentSpeeds" nillable="true" xbrli:periodType="duration" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AverageLifeInYears" name="AverageLifeInYears" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DiscountRate" name="DiscountRate" nillable="true" xbrli:periodType="duration" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PresentValueOfFutureInsuranceProfitsDeferrals" name="PresentValueOfFutureInsuranceProfitsDeferrals" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_UnearnedPremiumsDeferrals" name="UnearnedPremiumsDeferrals" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_UnearnedPremiumsAmortization" name="UnearnedPremiumsAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_GainLossOnLoanCommitments" name="GainLossOnLoanCommitments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NetFuturePolicyBenefitsAndUnpaidClaims" name="NetFuturePolicyBenefitsAndUnpaidClaims" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LiabilityForFuturePolicyBenefitBeforeReinsurancePreFlooringAdjustment" name="LiabilityForFuturePolicyBenefitBeforeReinsurancePreFlooringAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LiabilityForFuturePolicyBenefitAdjustmentDueToReserveFlooring" name="LiabilityForFuturePolicyBenefitAdjustmentDueToReserveFlooring" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitBeforeReinsuranceAfterOriginalDiscountRateChange" name="LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitBeforeReinsuranceAfterOriginalDiscountRateChange" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitBeforeReinsuranceAfterDiscountRateChangeExcludesFlooringImpact" name="LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitBeforeReinsuranceAfterDiscountRateChangeExcludesFlooringImpact" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LiabilityForFuturePolicyBenefitExpectedFutureGrossPremiumDiscountedBeforeReinsuranceAtOriginalDiscountRate" name="LiabilityForFuturePolicyBenefitExpectedFutureGrossPremiumDiscountedBeforeReinsuranceAtOriginalDiscountRate" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitProfitsDeferred" name="LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitProfitsDeferred" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitAmortization" name="LiabilityForFuturePolicyBenefitExpectedFuturePolicyBenefitAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyholderDeathBenefits" name="PolicyholderDeathBenefits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyholderFundsReceivableFromReinsurers" name="PolicyholderFundsReceivableFromReinsurers" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyholderFundsNet" name="PolicyholderFundsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyholderFundsNetOfReinsurance" name="PolicyholderFundsNetOfReinsurance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_Policyholderfundsdeferredprofitliabilityprofitsdeferred" name="Policyholderfundsdeferredprofitliabilityprofitsdeferred" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_Policyholderfundsdeferredprofitliabilityinterestexpense" name="Policyholderfundsdeferredprofitliabilityinterestexpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_Policyholderfundsdeferredprofitliabilityamortization" name="Policyholderfundsdeferredprofitliabilityamortization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_Policyholderfundsdeferredprofitliabilityotherchange" name="Policyholderfundsdeferredprofitliabilityotherchange" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyholderfundsReinsuranceRecoverable" name="PolicyholderfundsReinsuranceRecoverable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PolicyholderfundsAfterReinsurance" name="PolicyholderfundsAfterReinsurance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_StockIssuedDuringPeriodSharesStockOptionExercised" name="StockIssuedDuringPeriodSharesStockOptionExercised" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_VestingOfRestrictedStockUnits" name="VestingOfRestrictedStockUnits" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_UnrealizedNetGainsLossesOnAvailableForSaleSecurities" name="UnrealizedNetGainsLossesOnAvailableForSaleSecurities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_IncreaseDecreaseInUnrealizedNetGainsLossesOnAvailableForSaleSecurities" name="IncreaseDecreaseInUnrealizedNetGainsLossesOnAvailableForSaleSecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_UnrealizedGainsLossesOnRestrictedAssets" name="UnrealizedGainsLossesOnRestrictedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_IncreaseDececreaseInUnrealizedGainsLossesOnRestrictedAssets" name="IncreaseDececreaseInUnrealizedGainsLossesOnRestrictedAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_UnrealizedGainsLossesOnCemeteryPerpetualCareTrustInvestments" name="UnrealizedGainsLossesOnCemeteryPerpetualCareTrustInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_IncreaseDececreaseInUnrealizedGainsLossesOnCemeteryPerpetualCareTrustInvestments" name="IncreaseDececreaseInUnrealizedGainsLossesOnCemeteryPerpetualCareTrustInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AccumulatedOtherComprehensiveIncomeLossInterestRateRemeasurementOfFuturePolicyBenefits" name="AccumulatedOtherComprehensiveIncomeLossInterestRateRemeasurementOfFuturePolicyBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_IncreaseDececreaseInInterestRateRemeasurementOfFuturePolicyBenefits" name="IncreaseDececreaseInInterestRateRemeasurementOfFuturePolicyBenefits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_IncreaseDecreaseInOtherComprehensiveIncomeBalance" name="IncreaseDecreaseInOtherComprehensiveIncomeBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_IncrementalCommonSharesAttributableToUnvestedRestrictedStockUnits" name="IncrementalCommonSharesAttributableToUnvestedRestrictedStockUnits" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_RevenueFromCustomers" name="RevenueFromCustomers" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_NetInvestmentIncomeIntersegment" name="NetInvestmentIncomeIntersegment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SegmentRevenues" name="SegmentRevenues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_EliminationOfIntersegmentRevenues" name="EliminationOfIntersegmentRevenues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_PremiumTaxesOnInsurancePremiumsAndOtherConsiderations1" name="PremiumTaxesOnInsurancePremiumsAndOtherConsiderations1" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_IntersegmentExpenses" name="IntersegmentExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SegmentNetIncomeLoss" name="SegmentNetIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_SegmentAssets" name="SegmentAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_EliminationOfIntersegmentAssets" name="EliminationOfIntersegmentAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryPerpetualCareTrustInvestments1" name="CemeteryPerpetualCareTrustInvestments1" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_CemeteryPerpetualCareTrustInvestments2" name="CemeteryPerpetualCareTrustInvestments2" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DerivativesInterestRateLockCommitments" name="DerivativesInterestRateLockCommitments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_AssetsFairValueDisclosureRecurring1" name="AssetsFairValueDisclosureRecurring1" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_DerivativesBankLoanInterestRateSwapsInterestRateLockCommitments" name="DerivativesBankLoanInterestRateSwapsInterestRateLockCommitments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityRangeOfInputsMinimum" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityRangeOfInputsMinimum" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityRangeOfInputsMaximum" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityRangeOfInputsMaximum" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityWeightedAverage" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityWeightedAverage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityOfInputsMinimum" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityOfInputsMinimum" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityRangeInputsMaximum" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityRangeInputsMaximum" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityWeightedAveragePricePerShare" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityWeightedAveragePricePerShare" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_Originations" name="Originations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_OriginationsOfLoansHeldForSale" name="OriginationsOfLoansHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_Sales" name="Sales" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueLossesGainsIncludedInEarnings" name="FairValueLossesGainsIncludedInEarnings" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_TotalGainsLossesIncludedInOtherComprehensiveIncome" name="TotalGainsLossesIncludedInOtherComprehensiveIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueOfPolicyAndOtherLoansReceivable" name="FairValueOfPolicyAndOtherLoansReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueOfCemeteryPerpetualCareTrustInvestments" name="FairValueOfCemeteryPerpetualCareTrustInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_FairValueOfPolicyholderFunds" name="FairValueOfPolicyholderFunds" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_InterestSensitiveInsuranceProductsRangePercentage" name="InterestSensitiveInsuranceProductsRangePercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SNFCA_MinimumPretaxLoss" name="MinimumPretaxLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
