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Expense Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Net investment (losses) gains Net investment (losses) gains Gain (Loss) on Investments Debt Instrument [Axis] Debt Instrument [Axis] Information technology Technology Sector [Member] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Other Income and Expenses [Abstract] Additional paid-in capital Additional Paid in Capital Reserves for losses and loss adjustment expenses Reserves for losses and LAE, beginning of period Reserves for losses and LAE, end of period Liability for Claims and Claims Adjustment Expense Due after five years through ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Sale of investment in subsidiary Proceeds from Divestiture of Interest in Subsidiaries and Affiliates Fair Value Measurement [Domain] Fair Value Measurement [Domain] Financial 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Held-for-sale, Fair Value Disclosure SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Other Managing General Insurance Agent And Broker, Other [Member] Managing General Insurance Agent And Broker, Other Other Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Expenses: Costs and Expenses [Abstract] Equity Equity Sector [Member] Equity Sector Short-term investments, at fair value Other Short-Term Investments Unrealized losses on investments Deferred Tax Asset, Debt Securities, Available-for-Sale, Unrealized Loss Sale of stock, stock note receivable Stockholders' Equity Note, Subscriptions Receivable Total liabilities Liabilities Unearned premiums Increase (Decrease) in Unearned Premiums Contingently issuable instruments (treasury stock method) Contingently Issuable Instruments, Treasury Stock Method [Member] Contingently Issuable Instruments, Treasury Stock Method Unallocated LAE Short-Duration Insurance Contracts, Liability for Unpaid Claims and Claims Adjustment Expense, Accumulated Unallocated Claim Adjustment Expense Operating lease weighted-average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Total net reserves for loss and LAE Reserves for losses and LAE, net of reinsurance Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Short-Duration Insurance Contracts, Claims Development [Table] Short-Duration Insurance Contracts, Claims Development [Table] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Industrial Industrial Portfolio Segment [Member] Industrial Portfolio Segment Hospitality Hospitality Portfolio Segment [Member] Hospitality Portfolio Segment Document Type Document Type Property, plant and equipment, useful life Property, Plant and Equipment, Useful Life Gross Unrealized Losses Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Total Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Short-term investments Short Term Investment, Fair Value Disclosure Short Term 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[Member] Hudson Ventures Fund 2, L.P. 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Finite-Lived Intangible Assets Acquired Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Line of Credit Line of Credit [Member] Net realized gain on sale of business Net realized gain on sale of business Gain (Loss) on Disposition of Business Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Summary of Equity Awards Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Municipal securities Municipal Bonds [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Contingently issuable instruments Contingently Issuable Instruments [Member] Contingently Issuable Instruments Residential mortgage-backed securities Residential Mortgage-Backed Securities [Member] Unrecognized compensation cost, recognition period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Losses and loss adjustment expenses Pretax Impact Of Loss Portfolio Transfer Pretax Impact Of Loss Portfolio Transfer Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Purchase of business Purchase of business Payments to Acquire Businesses, Gross Entity Registrant Name Entity Registrant Name Adjustments to reconcile net income to net cash used in operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities Purchase Of Common Stock Purchase Of Common Stock [Member] Purchase Of Common Stock Cash provided by (used in) deposit accounting Proceeds From (Payments For) Deposit Accounting Proceeds From (Payments For) Deposit Accounting Short-Duration Insurance Contract, Cumulative Number of Reported Claims Short-Duration Insurance Contract, Cumulative Number of Reported Claims Subsequent Events Subsequent Events [Text Block] Loans held-for-investment, term Loans Held-for-Investment, Term Loans Held-for-Investment, Term Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities Incurred losses and ALAE, net of reinsurance Short-Duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net Subordinate Debt Due 2039 Unsecured Subordinated Notes Due 2039 [Member] Unsecured Subordinated Notes Due 2039 Employee Benefit Plans Retirement Benefits [Text Block] Losses and loss adjustment expenses (current year) SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Current Year Claim and Claim Adjustment Expense Without single maturity date Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Leases [Abstract] Total mutual funds Mutual funds Mutual Fund [Member] Unrealized gains and losses on investments: Debt Securities, Unrealized Gain (Loss) [Abstract] Payable (receivable) for securities sold Payments For (Proceeds From) Sale and Collection of Securities Payments For (Proceeds From) Sale and Collection of Securities Net operating losses Deferred Tax Assets, Operating Loss Carryforwards Minimum Minimum [Member] Due in less than one year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Entity Emerging Growth Company Entity Emerging Growth Company Unearned premiums Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Unearned Premiums Reserve Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share Schedule of Common Stock Notes Receivable Schedule of Common Stock Notes Receivable [Table Text Block] Schedule of Common Stock Notes Receivable SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Commitments and Contingencies Disclosure [Abstract] Investment, Name [Axis] Investment, Name [Axis] Premiums Revenue Recognition, Premiums Earned, Policy [Policy Text Block] Fair ValueMeasurements Fair Value Disclosures [Text Block] Available for sale, gross unrealized losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Trading Symbol Trading Symbol Entity File Number Entity File Number Everest Reinsurance Co Everest Reinsurance Co [Member] Everest Reinsurance Co Agency agreement Agency Agreement [Member] Agency Agreement Reinsurer, Name [Domain] Reinsurer, Name [Domain] 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Four Gross written commissions Insurance Commissions Statutory Accounting Principles Statutory Accounting Practices Disclosure [Table Text Block] Investment Income [Table] Investment Income [Table] Title of Individual [Axis] Title of Individual [Axis] Deferred tax expense related to temporary differences Deferred Income Tax Expense (Benefit), Temporary Differences Deferred Income Tax Expense (Benefit), Temporary Differences Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Fixed maturity securities, held to maturity: Fixed Maturities, Held-To-Maturity [Member] Fixed Maturities, Held-To-Maturity Total income tax expense Effective Income Tax Rate Reconciliation, Percent Arena SOP LP units Arena SOP LP [Member] Arena SOP LP Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Use of Estimates Use of Estimates, Policy [Policy Text Block] Assumed premiums Assumed Premiums Earned Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Cumulative net paid loss and LAE from the table below Cumulative net paid loss and LAE Short-Duration Insurance Contracts, Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net Concentration risk, percentage Concentration Risk, Percentage Principal Owner Principal Owner [Member] Reinsurance Reinsurance Accounting Policy [Policy Text Block] Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Income Taxes Income Tax Disclosure [Text Block] Credit Facility [Domain] Credit Facility [Domain] Intangible assets, gross balance Intangible Assets, Gross (Excluding Goodwill) Stock notes receivable Receivable from Shareholders or Affiliates for Issuance of Capital Stock Basic earnings per share (in dollar per share) Earnings Per Share, Basic Requisite service period Requisite Service Period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Accounting Standards Update and Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Statutory Accounting Principles Insurance Disclosure [Text Block] Amortized cost Gross Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Indefinite-Lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Allowance for Uncollectible Premiums Receivable SEC Schedule, 12-09, Allowance, Uncollectible Premium Receivable [Member] Due after five years through ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Condensed Income Statement [Table] Condensed Income Statement [Table] Ownership [Domain] Ownership [Domain] Westaim HIIG LP Affiliates Westaim HIIG LP Affiliates [Member] Westaim HIIG LP Affiliates Reinsurance recoveries under the LPT Reinsurance Recoveries Under The LPT Reinsurance Recoveries Under The LPT Entity Interactive Data Current Entity Interactive Data Current Performance awards (contingently issuable) (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Performance Awards Incremental Common Shares Attributable to Dilutive Effect of Conversion of Performance Awards Ceded premiums Reinsurance premiums ceded Reinsurance premiums ceded Ceded Premiums Earned Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Contingently issuable instruments (treasury stock method) (in shares) Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] SMA2 SMA2 [Member] SMA2 Change in short-term investments Proceeds from Sale of Short-Term Investments Schedule of Share-Based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Total other comprehensive loss Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Gulf Capital Bank Gulf Capital Bank [Member] Gulf Capital Bank Employee equity transactions Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Income Taxes Income Tax, Policy [Policy Text Block] Cost SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Cost Junior Subordinated Notes Due 2036, Capital Securities Junior Subordinated Notes Due 2036, Capital Securities [Member] Junior Subordinated Notes Due 2036, Capital Securities Accumulated deficit Retained Earnings (Accumulated Deficit) Due after ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Scenario [Domain] Scenario [Domain] Trademarks Trademarks [Member] Universa Black Swan Universa Black Swan LP units Universa Black Swan Protection Protocol LIV L.P. [Member] Universa Black Swan Protection Protocol LIV L.P. Related Party Transactions Related Party Transactions Disclosure [Text Block] Related party transaction, shares Related Party Transaction, Shares Related Party Transaction, Shares Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Document Fiscal Year Focus Document Fiscal Year Focus Finite-Lived Intangible Assets Amortization Expense Finite-Lived Intangible Assets Amortization Expense [Table Text Block] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Total Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Debt Securities, Available-for-Sale And Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Property, equipment and other, gross Property, Plant and Equipment, Other, Gross Losses and loss adjustment expenses Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Current income tax expense Current Income Tax Expense (Benefit) Tax advantaged investments Effective Income Tax Rate Reconciliation, Advantaged Investments, Percent Effective Income Tax Rate Reconciliation, Advantaged Investments, Percent Materials Materials Sector [Member] Materials Sector Total lease expense Total lease expense Operating Lease, Expense Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Indefinite-Lived Indefinite-Lived Intangible Assets [Roll Forward] Difference Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Stock options/awards Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Investment in subsidiaries Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Goodwill recognized Goodwill, net balance Goodwill Treasury stock (in shares) Treasury Stock, Shares Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Notes payable Notes Payable Term Loan, due December 2024 Term Loan Due December 2024 [Member] Term Loan Due December 2024 Management services agreement Management Services Agreement [Member] Management Services Agreement Funds held for others Funds Held under Reinsurance Agreements, Liability Income tax expense Total income tax expense Income tax benefit Income Tax Expense (Benefit) Less valuation allowance Balance at beginning of year Balance at end of year Deferred Tax Assets, Valuation Allowance Deferred policy acquisition costs Increase (Decrease) in Deferred Policy Acquisition Costs Entity Public Float Entity Public Float Boston Indemnity Company Boston Indemnity Company [Member] Boston Indemnity Company Equity securities Equity Securities, FV-NI, Realized Loss Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Group Accident & Health Group Insurance Policy [Member] Captex Bancshares Captex Bancshares [Member] Captex Bancshares Total investments Investments SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] Common stock, $0.01 par value, 168,000,000 shares authorized, 16,832,955 and 16,763,069 shares issued, respectively Common Stock, Value, Issued Common stock notes receivable Share-Based Compensation Arrangement by Share-Based Payment Award, Stock Notes Receivable, Amount Share-Based Compensation Arrangement by Share-Based Payment Award, Stock Notes Receivable, Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Paid losses and loss adjustment expense ceded Reinsurance Recoverables on Paid Losses, Gross Preferred  Stock Total preferred stocks Preferred stocks Preferred Stock [Member] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Other income (loss) Other Income Cash and cash equivalents and restricted cash at beginning of year Cash and cash equivalents and restricted cash at end of year Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Exterminator Pro Exterminator Pro [Member] Exterminator Pro Schedule of Premiums Written Effects of Reinsurance Effects of Reinsurance [Table Text Block] Schedule of Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments [Table Text Block] Summary of Valuation Allowance Summary of Valuation Allowance [Table Text Block] Subordinated debt, net of debt issuance costs Subordinated Debt Losses and loss adjustment expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Loss Reserves Total Debt Securities, Available-for-Sale, Unrealized Loss Position Amendment Flag Amendment Flag Remaining lease term Lessee, Operating Lease, Remaining Lease Term Useful life Finite-Lived Intangible Asset, Useful Life Investment Type [Axis] Investment Type [Axis] Shares granted, value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] Year 5 Short-Duration Insurance Contracts, Historical Claims Duration, Year Five Additions Goodwill, Acquired During Period Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax HSIC HSIC [Member] HSIC Deferred tax assets: Components of Deferred Tax Assets [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Reinsurer concentration risk Reinsurer Concentration Risk [Member] Purchase price of common stock, percent Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Paid, net of reinsurance, related to: Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract] Unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Short-term investments and cash Short-term Investments And Cash [Member] Short-term Investments And Cash Fixed maturity securities, available for sale, at fair value (amortized cost of $662,616 and $452,478, respectively) Fixed maturity securities, available-for-sale: Fair value total Debt Securities, Available-for-Sale, Excluding Accrued Interest Liability for Claims and Claims Adjustment Expense [Line Items] Liability for Claims and Claims Adjustment Expense [Line Items] Accident Year 2015 Short-Duration Insurance Contracts, Accident Year 2015 [Member] Counterparty Name [Axis] Counterparty Name [Axis] Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] Market condition awards Market Condition Awards [Member] Market Condition Awards Forfeitures Share-Based Payment Arrangement, Reversal Due to Forfeiture Share-Based Payment Arrangement, Reversal Due to Forfeiture Capital loss carryfoward Deferred Tax Assets, Capital Loss Carryforwards Goodwill and intangible assets, net Intangible Assets, Net (Including Goodwill) Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Other Commitments Other Commitments [Table Text Block] Operating cash outflows from operating leases Operating Lease, Payments Reclassification of temporary equity to stockholders’ equity Reclassifications of Temporary to Permanent Equity Treasury stock, $0.01 par value, 233,289 and 229,449 shares, respectively Treasury Stock, Value Statutory capital and surplus Statutory Accounting Practices, Statutory Capital and Surplus, Balance Gross realized losses Gross Realized Investment Losses [Abstract] Gross Realized Investment Losses General Liability General Liability [Member] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Commercial Commercial Portfolio Segment [Member] Maximum Maximum [Member] Deferred ceding commission Increase (Decrease) in Deferred Ceding Commission Increase (Decrease) in Deferred Ceding Commission Effects of Reinsurance [Table] Effects of Reinsurance [Table] SCHEDULE II — CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Financial Information of Parent Company Only Disclosure [Text Block] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Stockholders’ Equity Stockholders' Equity Note Disclosure [Text Block] Accordion feature, increase limit Line of Credit Facility, Accordion Feature, Increase Limit Line of Credit Facility, Accordion Feature, Increase Limit Purchase of illiquid investments Payments to Acquire Held-to-Maturity Securities and Equity Method Investments Payments to Acquire Held-to-Maturity Securities and Equity Method Investments Mortgage loans Mortgage Loans [Member] Mortgage Loans Purchase of fixed maturity securities, available for sale Payments to Acquire Debt Securities, Available-for-Sale Purchase price for intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets Legacy Programs Legacy Programs [Member] Legacy Programs Total Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Other long-term investments Other Long-Term Investments Without single maturity date Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Deferred tax effected by expiration Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration, Tax Effected Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration, Tax Effected JVM Multi-Family Premier Fund IV JVM Multi-Family Premier Fund IV, LLC [Member] JVM Multi-Family Premier Fund IV, LLC Title of 12(b) Security Title of 12(b) Security Statutory Accounting Practices [Table] Statutory Accounting Practices [Table] Reinsurer, Name [Axis] Reinsurer, Name [Axis] Notes payable Notes Payable, Fair Value Disclosure Net unrealized (losses) gains on securities still held Net Unrealized Losses and Gains on Investments [Abstract] Net Unrealized Losses and Gains on Investments Selling Stockholders Selling Stockholders [Member] Selling Stockholders Subsequent Event [Line Items] Subsequent Event [Line Items] Strengthening of reserves subject to the LPT Strengthening of reserves subject to the LPT Liability For Unpaid Claims And Claims Adjustment Expense, Loss Portfolio Transfer, Period Increase (Decrease) Liability For Unpaid Claims And Claims Adjustment Expense, Loss Portfolio Transfer, Period Increase (Decrease) Amount on Balance Sheet SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Amount Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Useful life Equity Method Investment, Difference in Net Assets, Amortization Period Equity Method Investment, 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