Class of Stock [Axis] Common Class A [Member] Common Class C [Member] Common Class B [Member] Equity Components [Axis] Common Stock [Member] Additional Paid-in Capital [Member] AOCI Attributable to Parent [Member] Retained Earnings [Member] Treasury Stock, Common [Member] Accounting Standards Update [Axis] Accounting Standards Update 2016-13 [Member] Investment Type [Axis] Mortgage Loans Held for Investment [Member] Financial Instrument [Axis] Residential Mortgage [Member] Residential Construction [Member] Commercial [Member] Restricted Assets Mortgage Loans Held For Investment [Member] Cemetery Perpetual Care Trust Investments Mortgage Loans Held For Investment [Member] US Treasury Securities [Member] US States and Political Subdivisions Debt Securities [Member] Corporate Debt Securities [Member] Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Redeemable Preferred Stock [Member] Industrial Miscellaneous and All Other [Member] Equity Securities One [Member] Cemetery Perpectual Care Obligation [Member] Asset Class [Axis] Cemetery Perpectual Care Oblication [Member] Product and Service [Axis] Membership [Member] Activity Stock Due [Member] Corporate Securities [Member] US Government Corporations and Agencies Securities [Member] Restricted Assets [Member] 646 Securities [Member] 606 Securities [Member] Commercial Real Estate [Member] Residential Real Estate [Member] Residential Real Estate [Member] Statistical Measurement [Axis] Minimum [Member] Maximum [Member] Geographical [Axis] UTAH FLORIDA TEXAS ARIZONA CALIFORNIA Asset Acquisition [Axis] Cemeteries and Mortuaries [Member] External Credit Rating by Grouping [Axis] NAIC, Class 1 Designation [Member] NAIC, Class 2 Designation [Member] NAIC, Class 3 Designation [Member] NAIC, Class 4 Designation [Member] NAIC, Class 5 Designation [Member] NAIC, Class 6 Designation [Member] National Association of Insurance Commissioners [Member] Lease Contractual Term [Axis] Due in 1 year [Member] Due in 2-5 years [Member] Due in 5-10 years [Member] Due in more than 10 years [Member] Fixed Maturity Securities [Member] Equity Securities [Member] Mortgage Loans Real Estate [Member] Real Estate [Member] Policy Student And Other Loans [Member] Insurance Assignments [Member] Other Investments [Member] Cash And Cash Equivalents [Member] Life Insurance Regulatory Authorities [Member] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Third Party Reinsurance Agreements [Member] Pledged Status [Axis] Asset Pledged as Collateral [Member] LOUISIANA MISSISSIPPI Long-Lived Tangible Asset [Axis] Land Developments [Member] Segments [Axis] Mortgage Operations [Member] Life Insurance Operations [Member] Life Insurance Sales [Member] Commercial Loan [Member] Financial Asset, Aging [Axis] Past Due 30 to 59 Days [Member] Past Due 60 to 89 Days [Member] Past Due 90 or More Days [Member] In Foreclosure [Member] Total Past Due [Member] Current [Member] Net Mortgage Loans [Member] Debt-to-Value [Axis] Less than 65% [Member] Financing Receivable Portfolio Segment [Axis] Commercial Portfolio Segment [Member] 65% to 80% [Member] Greater than 80% [Member] Greater than 1.20x [Member] 1.00x - 1.20x [Member] Less than 1.00x [Member] Residential Portfolio Segment [Member] Financial Instrument Performance Status [Axis] Performing Financial Instruments [Member] Nonperforming Financial Instruments [Member] Residential Mortgage Loans [Member] Residential Construction Mortgage Loans [Member] Over 90 Days Past Due [Member] Net Insurance Assignments [Member] Real Estate Held For Investment And Sale [Member] Other Assets [Member] Class of Financing Receivable [Axis] Fixed Maturity Securities Available For Sale [Member] Equity Securities [Member] Real Estate Held For Investment [Member] Cash and Cash Equivalents [Member] Plan Name [Axis] Stock Option Plans [Member] Antidilutive Securities [Axis] Restricted Stock Units (RSUs) [Member] Award Type [Axis] Share-Based Payment Arrangement, Option [Member] Life Insurance [Member] Cemetery/Mortuary [Member] Mortgage [Member] Intercompany Eliminations [Member] Fair Value Hierarchy and NAV [Axis] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Sale of Stock [Axis] Loans Held For Sale [Member] Net Derivatives Loan Commitments [Member] Fixed Maturity Securities Available For Sale 1 [Member] Mortgage Loans Net 1 [Member] Policy Loan [Member] Restricted Assets [Member] Cemetery Perpetual Care Trust Investments [Member] Mortgage Servicing Rights [Member] Bank and Other Loans Payable [Member] Policyholder Account Balances [Member] Future Policy Benefits Annuities [Member] Loan Commitments [Member] Lender Name [Axis] U.S Bank [Member] Western Alliance Bank [Member] Debt Instrument [Axis] Loans [Member] Statement of Income Location, Balance [Axis] Major Goods Or Services Lines At Need [Member] Major Goods Or Services Lines Pre Need [Member] Timing Of Revenue Recognition Goods Transferred At A Point In Time [Member] Timing Of Revenue Recognition Services Transferred At A Point In Time [Member] Four Securities [Member] 12 Securities [Member] Security National Life Insurance [Member] Cemetery Perpetual Care Trust Investments [Member] Statement [Table] Statement [Line Items] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Entity Listing, Par Value Per Share Assets Investments: Fixed maturity securities, available for sale, at estimated fair value (amortized cost of $347,143,698 and $390,884,441 for 2024 and 2023, respectively; net of allowance for credit losses of $414,602 and $314,549 for 2024 and 2023, respectively) Equity securities at estimated fair value (cost of $11,357,095 and $10,571,505 for 2024 and 2023, respectively) Mortgage loans held for investment (net of allowance for credit losses of $1,579,746 and $3,818,653 for 2024 and 2023, respectively) Real estate held for investment (net of accumulated depreciation of $30,005,134 and $29,307,791 for 2024 and 2023, respectively) Real estate held for sale Other investments and policy loans (net of allowance for credit losses of $1,540,835 and $1,553,836 for 2024 and 2023, respectively) Accrued investment income Total investments Cash and cash equivalents Loans held for sale at estimated fair value Receivables (net of allowance for credit losses of $1,566,150 and $1,897,887 for 2024 and 2023, respectively) Restricted assets (including $11,608,495 and $9,239,063 for 2024 and 2023 respectively, at estimated fair value) Cemetery perpetual care trust investments (including $5,844,356 and $4,969,005 for 2024 and 2023, respectively, at estimated fair value) Receivable from reinsurers Cemetery land and improvements Deferred policy and pre-need contract acquisition costs Mortgage servicing rights, net Property and equipment, net Value of business acquired Goodwill Other Total Assets Liabilities and Stockholders’ Equity Liabilities Future policy benefits and unpaid claims Unearned premium reserve Bank and other loans payable Deferred pre-need cemetery and mortuary contract revenues Cemetery perpetual care obligation Accounts payable Other liabilities and accrued expenses Income taxes Total liabilities Stockholders’ Equity Preferred Stock - non-voting - $1.00 par value; 5,000,000 shares authorized; none issued or outstanding Common stock value Additional paid-in capital Accumulated other comprehensive loss, net of taxes Retained earnings Treasury stock at cost - 938,919 Class A shares and 37,503 Class C shares as of September 30, 2024; and 852,338 (1) Class A shares and 37,503 (1) Class C shares as of December 31, 2023 Total stockholders’ equity Total Liabilities and Stockholders’ Equity Amortized cost Allowance for credit loss Equity securities cost Allowance for loan and lease losses, real estate Real estate investment property, accumulated depreciation Allowance for doubtful accounts, premiums and other receivables Accounts receivable, allowance for credit loss Aggregate fair value, restricted assets Aggregate fair value, cemetery perpetual care trust investments Preferred stock, par value Preferred stock, shares authorized Preferred stock, shares issued Preferred stock, shares outstanding Common stock, par value Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Treasury stock, shares Income Statement [Abstract] Revenues: Mortgage fee income Insurance premiums and other considerations Net investment income Net mortuary and cemetery sales Gains (losses) on investments and other assets Other Total revenues Benefits and expenses: Death benefits Surrenders and other policy benefits Increase in future policy benefits Amortization of deferred policy and pre-need acquisition costs and value of business acquired Selling, general and administrative expenses: Commissions Personnel Advertising Rent and rent related Depreciation on property and equipment Costs related to funding mortgage loans Other Interest expense Cost of goods and services sold-mortuaries and cemeteries Total benefits and expenses Earnings before income taxes Income tax expense Net earnings Net earnings per Class A Equivalent common share Net earnings per Class A Equivalent common share-assuming dilution Weighted-average Class A equivalent common shares outstanding Weighted-average Class A equivalent common shares outstanding-assuming dilution Net earnings Other comprehensive income: Unrealized gains (losses) on fixed maturity securities available for sale Unrealized gains (losses) on restricted assets Unrealized gains (losses) on cemetery perpetual care trust investments Other comprehensive income (loss), before income tax Income tax (expense) benefit Other comprehensive income (loss), net of income tax Comprehensive income (loss) Balance Other comprehensive income (loss) Stock-based compensation expense Vesting of restricted stock units Sale of treasury stock Purchase of treasury stock Conversion Class C to Class A Exercise of stock options Stock dividends Adoption of ASU 2016-13 Balance Statement of Cash Flows [Abstract] Cash flows from operating activities: Net cash provided by operating activities Cash flows from investing activities: Purchases of fixed maturity securities Sales, calls and maturities of fixed maturity securities Purchases of equity securities Sales of equity securities Purchases of restricted assets Sales, calls and maturities of restricted assets Purchases of cemetery perpetual care trust investments Sales, calls and maturities of perpetual care trust investments Mortgage loans held for investment, other investments and policy loans made Payments received for mortgage loans held for investment, other investments and policy loans Purchases of property and equipment Sales of property and equipment Purchases of real estate Sales of real estate Net cash provided by investing activities Cash flows from financing activities: Investment contract receipts Investment contract withdrawals Proceeds from stock options exercised Purchases of treasury stock Repayment of bank loans Proceeds from bank loans Net change in warehouse line borrowings for loans held for sale Net cash used in financing activities Net change in cash, cash equivalents, restricted cash and restricted cash equivalents Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period Supplemental Disclosure of Cash Flow Information: Cash paid during the year for: Interest Income taxes (net of refunds) Non Cash Operating, Investing and Financing Activities: Right-of-use assets obtained in exchange for operating lease liabilities Benefit plans funded with treasury stock Loans held for sale foreclosed into real estate held for sale Right-of-use assets obtained in exchange for finance lease liabilities Transfer of loans held for sale to mortgage loans held for investment Transfer from mortgage loans held for investment to restricted assets Transfer from mortgage loans held for investment to cemetery perpetual care trust investments Cash and cash equivalents Restricted assets Cemetery perpetual care trust investments Pay vs Performance Disclosure [Table] Executive Category [Axis] Individual [Axis] Adjustment to Compensation [Axis] Measure [Axis] Pay vs Performance Disclosure, Table Company Selected Measure Name Named Executive Officers, Footnote Peer Group Issuers, Footnote Changed Peer Group, Footnote PEO Total Compensation Amount PEO Actually Paid Compensation Amount Adjustment To PEO Compensation, Footnote Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Compensation Actually Paid Amount Adjustment to Non-PEO NEO Compensation Footnote Equity Valuation Assumption Difference, Footnote Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Company Selected Measure Total Shareholder Return Vs Peer Group Compensation Actually Paid vs. Other Measure Tabular List, Table Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Net Income (Loss) Company Selected Measure Amount Other Performance Measure, Amount Adjustment to Compensation, Amount PEO Name Name Non-GAAP Measure Description Additional 402(v) Disclosure Pension Benefits Adjustments, Footnote Erroneously Awarded Compensation Recovery [Table] Restatement Determination Date [Axis] Restatement Determination Date Aggregate Erroneous Compensation Amount Erroneous Compensation Analysis Stock Price or TSR Estimation Method Outstanding Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Not Yet Determined Name Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery, Explanation of Impracticability Name Compensation Amount Restatement does not require Recovery Awards Close in Time to MNPI Disclosures [Table] Award Timing MNPI Disclosure Award Timing Method Award Timing Predetermined Award Timing MNPI Considered Award Timing, How MNPI Considered MNPI Disclosure Timed for Compensation Value Awards Close in Time to MNPI Disclosures, Table Name Underlying Securities Exercise Price Fair Value as of Grant Date Underlying Security Market Price Change Insider Trading Arrangements [Line Items] Material Terms of Trading Arrangement Name Title Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted Adoption Date Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated Termination Date Expiration Date Arrangement Duration Rule 10b5-1 Arrangement Modified Non-Rule 10b5-1 Arrangement Modified Insider Trading Policies and Procedures [Line Items] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Not Adopted Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation Accounting Changes and Error Corrections [Abstract] Recent Accounting Pronouncements Investments, Debt and Equity Securities [Abstract] Investments Loans Held For Sale Loans Held for Sale Share-Based Payment Arrangement [Abstract] Stock Compensation Plans Earnings Per Share [Abstract] Earnings Per Share Segment Reporting [Abstract] Business Segment Information Fair Value Disclosures [Abstract] Fair Value of Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments Commitments and Contingencies Disclosure [Abstract] Reinsurance, Commitments and Contingencies Goodwill and Intangible Assets Disclosure [Abstract] Mortgage Servicing Rights Income Tax Disclosure [Abstract] Income Taxes Revenue from Contract with Customer [Abstract] Revenues from Contracts with Customers Receivables [Abstract] Receivables Cemetery Perpetual Care Trust Investments And Obligation And Restricted Assets Cemetery Perpetual Care Trust Investments and Obligation and Restricted Assets Equity [Abstract] Accumulated Other Comprehensive Income (loss) Schedule of Increased (Decrease) in Allowances for Credit Losses Upon ASU Schedule of Investments Schedule of Fair Value of Fixed Maturity Securities Schedule of Credit Quality of Fixed Maturity Security Portfolio by NAIC Designation Schedule of Allowance for Credit Losses on Fixed Maturity Securities Available for Sale Schedule of Investments Classified by Contractual Maturity Date Schedule of Major Categories of Net Investment Income Schedule of Assets on Deposit With Life Insurance Schedule of Commercial Real Estate Investment Schedule of Residential Real Estate Investment Schedule of Real Estate Owned and Occupied by the Company Schedule of Allowance for Loan Losses Schedule of Aging of Mortgage Loans Schedule of Commercial Mortgage Loans By Credit Quality Indicator Schedule of Residential Construction Mortgage Loans Schedule of Aging of Insurance Assignments Schedule of Allowance for Credit Losses Schedule of Gain (Loss) on Investments Schedule of Accrued Investment Income Schedule of Aggregate Fair Value Loans Held for Sale Schedule of Mortgage Fee Income for Loans Held for Sale Schedule of Loan Loss Reserve Included in Other Liabilities and Accrued Expenses Schedule of Activity of Stock Option Plans Schedule of Activity Restricted Stock Units Schedule of Earnings Per Share, Basic and Diluted Summary of Activities in Shares of Capital Stock Schedule of Revenues and Expenses by Reportable Segment Schedule of Fair Value Assets and Liabilities Measured on a Recurring Basis Schedule of Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis Schedule of Changes in Consolidated Balance Sheet Line Items Measured Using Level 3 Inputs Schedule of Financial Instruments Carried at Other Than Fair Value Schedule of Derivative Assets at Fair Value Schedule of Gains and Losses on Derivatives Schedule of Mortgage Servicing Rights Schedule of Finite-Lived Intangible Assets, Future Amortization Expense, Mortgage Servicing Rights Schedule of Other Revenues Summary of Unpaid Principal Balances of the Servicing Portfolio Schedule of Assumptions Used in Determining MSR Value Schedule of Opening and Closing Balances of Receivables, Contract Assets and Contract Liabilities Schedule of Revenues of the Cemetery and Mortuary Contracts Schedule of Reconciliation of Revenues from Cemetery and Mortuary Contracts to Business Segment Information Schedule of Receivables Schedule of Allowance Credit Losses Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table] Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] Schedule of Restricted Assets in Cemetery and Mortuary Endowment Care and Pre need Merchandise Funds Schedule of Changes in Accumulated Other Comprehensive Income Schedule of Accumulated Balances of Other Comprehensive Income Accounting Standards Update and Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Allowances for credit losses increase (decrease) Decrease in retained earnings Marketable Securities [Table] Marketable Securities [Line Items] Available for sale securities, amortized cost Available for sale securities, unrecognized holding gain Available for sale securities, unrecognized holding loss Available for sale securities, allowance for credit losses Available for sale securities, estimated fair value Available-for-sale securities, amortized cost basis Available for sale securities, unrecognized holding gain Available for sale securities, unrecognized holding loss Available-for-sale securities, gross unrealized gain Mortgage loans on real estate and construction Mortgage loans on real estate and construction, unamortized deferred loan fees, net Mortgage loans on real estate and construction, allowance for losses Mortgage loans on real estate and construction, discount Mortgage loans on real estate and construction Real estate held for investment, net of depreciation Policy loans Insurance assignments Federal home loan bank stock Other investments Allowance for credit losses Total policy loans and other investments Total investments Allowance for Credit Losses Cash and cash equivalents Total cemetery perpetual care trust investments Cemetery perpetual care obligation Trust investments in excess of trust obligations Short term investment Available for sale securities, unrecognized holding loss Available for sale securities, fair value Available for sale securities, unrecognized holding loss Available for sale securities, fair value Available for sale securities, unrecognized holding loss Available for sale securities, fair value Guarantor Obligation [Table] Guarantor Obligations [Line Items] Estimated fair value Impairment Effects on Earnings Per Share [Table] Impairment Effects on Earnings Per Share [Line Items] Balance Additions for credit losses not previously recorded Change in allowance on securities with previous allowance Reductions for securities sold during the period Reductions for securities with credit losses due to intent to sell Write-offs charged against the allowance Recoveries of amounts previously written off Balance Proceeds from sales Gross realized gains Gross realized losses Gross investment income Investment expenses Fixed maturity securities available for sale at estimated fair value Other investments Cash and cash equivalents Total assets on deposit Total assets on deposit Total assets pledged as collateral Real estate held for investment (net of accumulated depreciation) Total square footage Real estate Square footage Lots available for sale Lots to be developed Approximate square footage Square footage occupied by the company Financing receivable, allowance for credit loss, beginning balance Cumulative effect adjustment upon adoption of new accounting standard (ASU 2016-13 Provision for credit losses Allowance for credit losses, charge-offs Financing receivable, allowance for credit loss, ending balance Mortgage Loans during period Mortgage Loans, Allowance for Loan Losses Mortgage Loans, Unamortized deferred loan fees, net Mortgage Loans, Unamortized discounts, net Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Line Items] Year 1 Year 2 Year 3 Year 4 Year 5 Prior Total % of Total Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Line Items] Mortgage loans in process of foreclosure, amount Originated in current fiscal year Originated in fiscal year before latest fiscal year Originated two years before latest fiscal year Originated three years before latest fiscal year Insurance assignments during period Insurance assignments, allowance for loan losses Financing Receivable, Allowance for Credit Loss, Beginning Allowance for credit losses, change in provision Allowance for credit losses, Charge-offs Financing Receivable, Allowance for Credit Loss, Ending Schedule of Investments [Table] Schedule of Investments [Line Items] Net credit loss release (provision) Gains (losses) on securities sold Unrealized gains (losses) on securities held at the end of the period Gross realized gains Gross realized losses Total Total accrued investment income Debt Securities, Available-for-Sale [Table] Debt Securities, Available-for-Sale [Line Items] Average market value over amortized cost Credit loss recognized Fixed maturity securities rated investment grade, percent Collateral for bank loans Depreciation expense Impairment losses on residential real estate held for sale Foreclosed real estate expense Loan interest rate Loan term Interest not accrued on non-performing loans Net realized gains Schedule Of Aggregate Fair Value Loans Held For Sale Aggregate fair value Unpaid principal balance Unrealized gain (loss) Schedule Of Mortgage Fee Income For Loans Held For Sale Loan fees Interest income Secondary gains Change in fair value of loan commitments Change in fair value of loans held for sale Provision for loan loss reserve Balance, beginning of period Provision on current loan originations Charge-offs, net of recaptured amounts Balance, end of period Foreclosure loans unpaid principal balance Loan increase per point Amount of loan increased, per point Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Number of shares, outstanding, beginning Weighted average exercise price, outstanding, beginning Number of Shares, adjustment for effect of stock dividends Number of shares, granted Number of shares, exercised Number of shares, cancelled Number of shares, outstanding, ending Weighted average exercise price, outstanding, ending Number of shares, options exercisable Weighted average exercise price, options exercisable Number of shares, available options for future grant Weighted average contractual term of options outstanding Weighted average contractual term of options exercisable Aggregated intrinsic value of options outstanding Aggregated intrinsic value of options exercisable Stock price Non-vested Number of shares, beginning Weighted average grant date fair value, beginning Non-vested Number of shares, Granted Non-vested Number of shares, Vested Number of shares, available RSUs for future grant Weighted average grant date fair value, ending Aggregated intrinsic value of RSUs outstanding Share based compensation expense Total unrecognized compensation expense Intrinsic value, stock options exercised Basic weighted-average shares outstanding Employee stock options Diluted weighted-average shares outstanding Basic net earnings per share Diluted net earnings per share Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Outstanding shares at December 31, 2023 Exercise of stock options Vesting of restricted stock units Conversion of Class C to Class A Outstanding shares at September 30, 2024 Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of earnings per share, amount Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information [Line Items] Revenues from external customers Intersegment revenues Segment profit (loss) before income taxes Identifiable Assets Total Assets Number of reportable segments Fair Value, Recurring and Nonrecurring [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Equity securities Loans held for sale Restricted assets (1) Restricted assets (2) Cemetery perpetual care trust investments (1) Cemetery perpetual care trust investments (2) Derivatives - loan commitments (3) Total assets accounted for at fair value on a recurring basis Derivatives - loan commitments (4) Total liabilities accounted for at fair value on a recurring basis Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Subsidiary, Sale of Stock [Line Items] Fair value balance, loans held for sale Fair value measurement, range of inputs, minimum value Fair value measurement, range of inputs, maximum value Fair value measurement with unobservable inputs reconciliation, recurring basis, asset and liability, weighted average Fair value balance, Derivatives - loan commitments (net) Fair value measurement, range of inputs, minimum value Fair value measurement, range of inputs, maximum value Fair value measurement with unobservable inputs reconciliation, recurring basis, asset and liability, weighted average Net loan commitments, beginning Loans Held for Sale, Beginning Fixed Maturity Securities Available for Sale, Beginning Originations and purchases Originations and purchases Originations and purchases Sales, maturities and paydowns Sales, maturities and paydowns Sales, maturities and paydowns Total gains (losses) included in earnings Total gains (losses) included in earnings Total gains (losses) included in other comprehensive income Total gains (losses) included in other comprehensive income Net loan commitments, ending Loans Held for Sale, Ending Fixed Maturity Securities Available for Sale, Ending Transfer to mortgage loans held for investment Transfer to mortgage loans held for investment Loans held for sale foreclosed into real estate held for sale Fair Value, off-Balance-Sheet Risk [Table] Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] Mortgage loans held for investment Mortgage loans held for investment, estimated fair value Other investments and policy loans, estimated fair value Restricted assets Restricted assets, estimated fair value Cemetery perpetual care trust investments Cemetery perpetual care trust investments, estimated fair value Mortgage servicing rights Mortgage servicing rights, estimated fair value Bank and other loans payable Bank and other loans payable, fair value Future policy benefits and unpaid claims Future policy benefits and unpaid claims Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Sensitive insurance product percentage Derivative, notional amount Derivative asset, notional amount Derivative liability, notional amount Gain (loss) on derivatives Loss Contingencies [Table] Loss Contingencies [Line Items] Reinsurance payable Line of credit, maximum borrowing capacity Interest rate terms Line of credit, maturity date Adjustment of debt Payment for other liabilities Other commitments Loan commitment ranges Interest rate Balance before valuation allowance at beginning of year MSR additions resulting from loan sales Amortization Sale of MSRs Application of valuation allowance to write down MSRs with other than temporary impairment Balance before valuation allowance at end of period Balance at beginning of year Additions Balance at end of period Estimated fair value of MSRs at end of period 2024 2025 2026 2027 2028 Thereafter Total Contractual servicing fees Late fees Total Servicing unpaid principal balance Prepayment speed Average life Discount rate Effective income tax rate reconciliation, percent Provision for income taxes Federal statutory income tax rate, percent Receivables, beginning balance Contract asset, beginning balance Contract liability, beginning balance Receivables, ending balance Contract asset, ending balance Contract liability, ending balance Increase (decrease) in accounts receivable Increase (decrease) in contract asset Increase (decrease) in contract liability Other revenues Revenues from external customers Revenue recognized included in the opening contract liability Contracts with customers Receivables from sales agents Other Total receivables Allowance for credit losses Net receivables Beginning balance Change in provision for credit losses Charge-offs Ending balance Mortgage loans on real estate and construction Fair value allowance for credit losses Total restricted assets Cash, cash equivalents, restricted cash and restricted cash equivalents at end of year Credit loss recognized Unrealized gains (losses) on fixed maturity securities available for sale Amounts reclassified into net earnings Unrealized gains (losses) on cemetery perpetual care  trust investments Tax (expense) benefit Net Tax (expense) benefit Net Other comprehensive income (loss) changes Unrealized gains on fix maturity securities available-for-sale Increase (Decrease) in Unrealized gains on fixed maturity securities available-for-sale Unrealized gains on fix maturity securities available-for-sale Unrealized gains (losses) on restricted assets Increase Dececrease in Unrealized gains (losses) on restricted assets Unrealized gains (losses) on restricted assets Unrealized gains (losses) on cemetery perpetual care trust investments Increase Dececrease in Unrealized gains (losses) on cemetery perpetual care trust investments Unrealized gains (losses) on cemetery perpetual care trust investments Other comprehensive income (loss), Balance Increase (Decrease) in Other comprehensive income (loss), Balance Other comprehensive income (loss), Balance Rule 10b5-1 Arrangement Modified. Non-Rule 10b5-1 Arrangement Modified. Increase decrease in retained earnings. Mortgage Loans Held for Investment [Member] Represents the Residential construction, during the indicated time period. Represents the Commercial, during the indicated time period. Restricted Assets Mortgage Loans Held For Investment [Member] Cemetery Perpetual Care Trust Investments. Cemetery Perpetual Care Trust Investments Mortgage Loans Held For Investment [Member] Policy and other loans receivable net1. Cemetery perpetual care trust obligation. Industrial Miscellaneous and All Other [Member] Equity Securities One [Member] Mortgage loans on real estate and construction unamortized deferred loan fees net. Mortgage loans on real estate and construction discount. Policy loans amortized cost. Insurance assignments amortized cost. Other investments amortized cost. Activity Stock Due [Member] Represents the monetary amount of Aggregate Fair Value, Restricted Assets, as of the indicated date. Represents the monetary amount of Aggregate Fair Value, Cemetary Perpetual Care Trust Investments, as of the indicated date. Schedule Of Fair Value Of Fixed Maturity Securities [Table Text Block] Corporate Securities [Member] Average market value over amortized cost. 646 Securities [Member] 606 Securities [Member] Represents the percent of available-for-sale debt securities at fair value, rated investment grade (NAIC 1 or 2). Schedule of Credit Quality of Fixed Maturity Security Portfolio by NAIC Designation [Table Text Block] NAIC, Class 1 Designation [Member] NAIC, Class 2 Designation [Member] NAIC, Class 3 Designation [Member] NAIC, Class 4 Designation [Member] NAIC, Class 5 Designation [Member] NAIC, Class 6 Designation [Member] National Association of Insurance Commissioners [Member] Change in allowance on securities with previous allowance. Due in 1 year [Member] Due in 2-5 years [Member] Due in 5-10 years [Member] Due in more than 10 years [Member] Mortgage fee income. Net mortuary and cemetery sales. Policyholder death benefits. Rent and rent related. Depreciation on property and equipment. Cost of funding mortgage loans. Schedule of Major Categories of Net Investment Income [Table Text Block] Proceeds received from sale of fixed maturity available for sale securities. Stock Option Plans [Member] Other comprehensive income unrealized holding gain loss on restricted assets during period before tax. Other comprehensive income unrealized holding gain loss on cemetery perpetual care trust investments during period before tax. Commercial Real Estate [Member] Adjustment for effect of stock dividends. Total square footage. Sale of treasury stock. Purchase of treasury stock. Conversion class C to class A. Residential Real Estate [Member] Schedule of Residential Real Estate Investment [Table Text Block] Lots available for sale. Land Developments [Member] Lots to be developed. Represents the Approximate Square Footage, as of the indicated date. Mortgage Operations [Member] Represents the Life Insurance Operations, during the indicated time period. Life Insurance Sales [Member] Represents the Square Footage Occupied by the Company, as of the indicated date. Payment to acquire of cemetery perpetual care trust investments. Represents the monetary amount of Interest not accrued on non-performing loans, as of the indicated date. Proceeds from sales and maturities of perpetual care trust investments. Schedule of Allowance for Loan Losses [Table Text Block] Cash Paid During Year [Abstract] Benefit plans funded with treasury stock. Loans held for sale foreclosed into real estate held for sale. Represents the monetary amount of Allowance for Credit Losses, Provision, during the indicated time period. Transfer from mortgage loans held for investment to restricted assets. Represents the monetary amount of Allowance for credit losses, Charge-offs, during the indicated time period. Transfer from mortgage loans held for investment to cemetery perpetual care trust investments. Restricted assets. Cemetery perpetual care trust investments Allowance for credit losses cumulative effect adjustment up on adoption of new accounting standard. Schedule of Aging of Mortgage Loans [Table Text Block] Represents the monetary amount of Mortgage Loans during period, during the indicated time period. Represents the Past Due 30 to 59 Days, during the indicated time period. Represents the Past Due 60 to 89 Days, during the indicated time period. Represents the Past Due 90 or More Days, during the indicated time period. Represents the In Foreclosure, during the indicated time period. Represents the Total Past Due, during the indicated time period. Represents the Current, during the indicated time period. Represents the Net Mortgage Loans, during the indicated time period. Stock issued during period shares stock option exercised. Vesting of restricted stock units. Life Insurance [Member] Cemetery/Mortuary [Member] Mortgage [Member] Intercompany Eliminations [Member] Less than 65% [Member] Revenue from external customers. 65% to 80% [Member] Intersegment Revenues. Greater than 80% [Member] Greater than 1.20x [Member] 1.00x - 1.20x [Member] Less than 1.00x [Member] Identifiable Assets. Cemetery perpetual care trust investments. Cemetery perpetual care trust investments. Represents the monetary amount of Derivatives - interest rate lock commitments, as of the indicated date. Represents the monetary amount of Assets, Fair Value Disclosure, Recurring, as of the indicated date. Represents the monetary amount of Derivatives - bank loan interest rate swaps, Interest rate lock commitments, as of the indicated date. Residential Mortgage Loans [Member] Loans Held For Sale [Member] Represents the Net Derivatives Loan Commitments, during the indicated time period. Fixed Maturity Securities Available For Sale 1 [Member] Fair value measurement with unobservable inputs reconciliation recurring basis asset and liability range of inputs minimum. Fair value measurement with unobservable inputs reconciliation recurring basis asset and liability range of inputs minimum, price per share. Fair value measurement with unobservable inputs reconciliation recurring basis asset and liability range of inputs maximum. Fair value measurement with unobservable inputs reconciliation recurring basis asset and liability range of inputs maximum, price per share. Represents the fair value measurement with unobservable inputs reconciliation, recurring basis, asset and liability, weighted average, price per share, during the indicated time period. Represents the fair value measurement with unobservable inputs reconciliation, recurring basis, asset and liability, weighted average, during the indicated time period. Schedule of Residential Construction Mortgage Loans [Table Text Block] Residential Construction Mortgage Loans [Member] Schedule of Changes in the Consolidated Balance Sheet Line Items Measured Using Level 3 Inputs [Table Text Block] Represents the monetary amount of Originations, during the indicated time period. Represents the monetary amount of Sales, during the indicated time period. Represents the monetary amount of Fair Value, Gains (Losses) included in earnings, during the indicated time period. Total gains (losses) included in other comprehensive income. Originations of loans held for sale. Schedule of Aging of Insurance Assignments [Table Text Block] Insurance assignments during period. Over 90 Days Past Due [Member] Insurance Assignments [Member] Net Insurance Assignments [Member] Schedule of allowance for credit losses [Table Text Block] Allowance for credit losses,premiums and other receivables change in provision. Allowance for credit losses premiums and other receivables chargeoffs. Represents the monetary amount of Gross Realized Gains, during the indicated time period. Represents the monetary amount of Gross Realized Losses, during the indicated time period. Gain loss on investments and other assets. Realized investment gains. Represents the monetary amount of Transfer to mortgage loans held for investment, during the indicated time period. Represents the monetary amount of Gross investment income, during the indicated time period. Foreclosed real estate held for sale. Cemeteries and Mortuaries [Member] Loans Held For Sale Disclosure [Text Block] Foreclosure loans unpaid principal balance. Aggregate Fair Value Loans Held For Sale Schedule [Table Text Block] Represents the monetary amount of Aggregate Fair Value - Loans Held For Sale, as of the indicated date. Represents the monetary amount of Aggregate unpaid principal balance - Loans Held for Sale, as of the indicated date. Unrealized gain loss loans held for sale. Schedule of Mortgage Fee Income for Loans Held for Sale [Table Text Block] Represents the monetary amount of Loan fees, during the indicated time period. Represents the monetary amount of Secondary gains, during the indicated time period. Represents the monetary amount of Change in fair value of loan commitments, during the indicated time period. Change in fair value of loan held for sale. Provision for loan loss reserve. Schedule of Loan Loss Reserve Which is Included in Other Liabilities and Accrued Expenses [Text Block] Represents the monetary amount of beginning, loan loss reserve, as of the indicated date. Provision on current loan originations. Loan loss reserve charge offs. Loans held for sale. Loan increase per point. Amount of loan increased per point. Schedule of Financial Instruments Carried At Other Than Fair Value [Table Text Block] Mortgage Loans Net 1 [Member] Policy Loan [Member] Restricted Assets [Member] Cemetery Perpetual Care Trust Investments [Member] Mortgage Servicing Rights [Member] Bank and Other Loans Payable [Member] Represents the Policy holder Account balances, during the indicated time period. Future Policy Benefits Annuities [Member] Fair Value of Policy and Other Loans Receivable. Fair value of cemetery perpetual care trust investments. Fair value of future policy benefits and unpaid claims. Interest sensitive insurance products range percentage. Loan Commitments [Member] Schedule of Gains and Losses on Derivatives [Table Text Block] Fixed Maturity Securities [Member] Equity Securities [Member] Mortgage Loans Real Estate [Member] Real Estate [Member] Policy Student And Other Loans [Member] Other Investments [Member] Cash And Cash Equivalents [Member] Life Insurance Regulatory Authorities [Member] Third Party Reinsurance Agreements [Member] Real Estate Held For Investment And Sale [Member] Fixed Maturity Securities Available For Sale [Member] Real Estate Held For Investment [Member] Cemetery Perpetual Care Trust Investments and Obligation and Restricted Assets [Text Block] Texas Capital Bank N.A. [Member] Cemetery Perpectual Care Obligation [Member] Cemetery Perpectual Care Oblication [Member] Aggregate estimated fair value allowance for credit losses. Cemetery perpetual care obligation. Trust investments in excess of trust obligations. Allowance for credit losses. U.S Bank [Member] Adjustment of debt. Western Alliance Bank [Member] Payment for other liabilities. Loan commitment ranges. Four Securities [Member] Schedule of Mortgage Servicing Rights [Text Block] Sale of mortgage servicing rights. Mortgage servicing rights write down other than temporary impairment. Valuation allowance impairment of mortgage servicing rights. Schedule of Restricted Assets in Cemetery and Mortuary Endowment Care and Pre need Merchandise Funds [Table Text Block] Restricted Assets [Member] Aggregate fair value allowance for credit losses. Summary of Unpaid Principal Balances of the Servicing Portfolio [Table Text Block] Represents the monetary amount of Servicing Unpaid Principal Balance, as of the indicated date. Assumptions Used In Determining Msr Value [Text Block] Security National Life Insurance [Member] Prepayment speed. Average Life In Years. Represents the Discount Rate, during the indicated time period. Schedule of Opening and Closing Balances of Receivables, Contract Assets and Contract Liabilities [Table Text Block] 15 Securities [Member] 12 Securities [Member] Schedule of Changes in Accumulated Other Comprehensive Income [Table Text Block] Schedule of Accumulated Balances of Other Comprehensive Income [Table Text Block] Represents the monetary amount of Unrealized gains on fix maturity securities available-for-sale, as of the indicated date. Represents the monetary amount of Unrealized gains on restricted assets, as of the indicated date. Represents the monetary amount of Unrealized gains on cemetery perpetual care trust investments, as of the indicated date. Represents the monetary amount of Increase (Decrease) in Unrealized gains on fixed maturity securities available-for-sale, during the indicated time period. Represents the monetary amount of Increase Dececrease in Unrealized gains on restricted assets, during the indicated time period. Represents the monetary amount of Increase Dececrease in Unrealized gains on cemetery perpetual care trust investments, during the indicated time period. Represents the monetary amount of Increase (Decrease) in Other comprehensive income (loss), Balance, during the indicated time period. Reconciliation of Revenues from Cemetery and mortuary contracts to Business Segment Information [Table Text Block] Schedule of Receivables [Table Text Block] Receivables from sales agents. Allowance for doubtful accounts receivable charge offs. Residential Real Estate [Member] [Default Label] Equity Securities [Member] [Default Label] Restricted Assets [Member] [Default Label] CemeteryPerpetualCareTrustInvestmentsMember Assets [Default Label] Liabilities [Default Label] Treasury Stock, Value Equity, Attributable to Parent Liabilities and Equity Revenues Other Expenses Benefits, Losses and Expenses Other Comprehensive Income (Loss), before Tax Other Comprehensive Income (Loss), Tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Payments to Acquire Debt Securities, Available-for-Sale Payments to Acquire Equity Securities, FV-NI Payments to Acquire Restricted Investments PaymentsToAcquireCemeteryPerpetualCareTrustInvestments Payment for Acquisition, Loan, Held-for-Investment Payments to Acquire Property, Plant, and Equipment Payment for Acquisition, Real Estate, Held-for-Investment Net Cash Provided by (Used in) Investing Activities Withdrawal from Contract Holders Funds Payments for Repurchase of Common Stock Repayments of Bank Debt Line of Credit Facility, Increase (Decrease), Net Net Cash Provided by (Used in) Financing Activities Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Restricted assets Cemetery perpetual care trust investments Forgone Recovery, Individual Name Outstanding Recovery, Individual Name Awards Close in Time to MNPI Disclosures, Individual Name Trading Arrangement, Individual Name Debt Securities, Available-for-Sale, Unrealized Loss Equity Securities, FV-NI, Unrealized Gain Equity Securities, FV-NI, Unrealized Loss CemeteryPerpetualCareObligation Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Debt Securities, Available-for-Sale, Unrealized Loss Position Debt Securities, Available-for-Sale, Realized Loss Investment Income, Investment Expense Cash Equivalents, at Carrying Value Assets Held by Insurance Regulators Asset, Held-in-Trust Financial Instruments, Owned, at Fair Value AllowanceForCreditLossesPremiumsAndOtherReceivablesChargeOffs Gross Realized Gains ProvisionForLoanLossReserve BeginningLoanLossReserve EndingLoanLossReserve Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period StockIssuedDuringPeriodSharesStockOptionExercised VestingOfRestrictedStockUnits Obligations, Fair Value Disclosure FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityOfInputsMinimum FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityRangeInputsMaximum FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityWeightedAveragePricePerShare OriginationsOfLoansHeldForSale Proceeds from Sale, Loan, Held-for-Sale Investment Income, Net, Amortization of Discount and Premium OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax ForeclosedRealEstateHeldforsale Loans Payable, Fair Value Disclosure FairValueOfFuturePolicyBenefitsAndUnpaidClaims Amortization of Mortgage Servicing Rights (MSRs) SaleOfMortgageServicingRights ValuationAllowanceImpairmentOfMortgageServicingRights Finite-Lived Intangible Assets, Net Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset Contract with Customer, Asset, after Allowance for Credit Loss Other Receivables Accounts Receivable, before Allowance for Credit Loss AllowanceForDoubtfulAccountsReceivableChargeOffs AggregateEstimatedFairValueAllowanceForCreditLosses Unrealized Gain (Loss) on Investments Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Unrealized gains on fix maturity securities available-for-sale Unrealized gains on restricted assets {3} Unrealized gains on cemetery perpetual care trust investments {1}