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Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Accounting Standards Update and Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] 2022 Operating Leases, Future Minimum Payments, Due in Two Years Sales of investments Proceeds from Sale of Debt Securities, Available-for-sale Local Phone Number Local Phone Number Beginning balance (in shares) Ending balance (in shares) Temporary Equity, Shares Outstanding Exercised, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Long-term Debt, Gross Long-term Debt, Gross Schedule of long term debt Schedule of Long-term Debt Instruments [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Other assets Increase (Decrease) in Other Operating Assets Entity Emerging Growth 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shares) Preferred Stock, Shares Outstanding Net incurred loss and LAE related to: Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract] Measurement Basis [Axis] Measurement Basis [Axis] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Tender offer Tender Offer [Member] Tender Offer Outstanding, weighted-average remaining contractual term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Domain] Award Type [Domain] Investments [Domain] Investments [Domain] Nonvested shares subject to repurchase Nonvested Shares Subject To Repurchase [Member] Nonvested Shares Subject To Repurchase Corporate debt securities Corporate Debt Securities [Member] Trading Symbol Trading Symbol Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Unused fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Treasury stock, at cost Treasury Stock, Value Direct Written Premiums Direct Written Premiums [Member] Direct Written Premiums Loss Per Share Earnings Per Share [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Reconciliation of reserve balances for loss and LAE, net of reinsurance Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Entity Shell Company Entity Shell Company Prepaid reinsurance premiums Prepaid Reinsurance Premiums Net premiums earned Premiums Earned, Net Recently Adopted Financial Accounting Standards/Upcoming Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Statement of Financial Position [Abstract]