Reinsurance recoverable on paid and unpaid losses Increase (Decrease) in Reinsurance Recoverable Allowance for expected credit losses Accounts Receivable, Credit Loss Expense (Reversal) Losses and loss adjustment expenses Policyholder Benefits and Claims Incurred, Net Deferred Income Tax Assets, Net Deferred Income Tax Assets, Net Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Changes in the liability for unpaid losses and LAE table Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Net realized and unrealized (losses) gains on investments Net realized and unrealized (losses) gains on investments Gain (Loss) on Investments Debt Instrument [Axis] Debt Instrument [Axis] Property and equipment, gross Property, Plant and Equipment, Gross Dividends paid to stockholders and eligible plan award holders Payments of Ordinary Dividends, Common Stock Fair Value of Financial Instruments, Policy Fair Value of Financial Instruments, Policy [Policy Text Block] Paid in capital Additional Paid in Capital Alesco Surplus Note [Member] Alesco Surplus Note [Member] Alesco Surplus Note, due December 15, 2034 with variable interest of 405 basis points above 90-day LIBOR. Unpaid losses and loss adjustment expenses Unpaid losses and LAE, gross of reinsurance, at beginning of period Unpaid losses and LAE, gross of reinsurance, at end of period Liability for Claims and Claims Adjustment Expense Due after five years through ten years, fair value Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Financial Instruments [Domain] Financial Instruments [Domain] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Finance Lease Expense Finance Lease Expense Total amount of finance lease expense. Excludes sublease income. Finance Lease, Liability, to be Paid, Year Four Finance Lease, Liability, to be Paid, Year Four Depreciation Depreciation Reconciliation of Claims Development to the Aggregate Carrying Amount of the Liability for Unpaid lLsses and LAE [Abstract] Reconciliation of Claims Development to the Aggregate Carrying Amount of the Liability for Unpaid lLsses and LAE [Abstract] Reconciliation of Claims Development to the Aggregate Carrying Amount of the Liability for Unpaid lLsses and LAE [Abstract] Stock-options exercised, shares Stock-options exercised, shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Maximum reinsurance for losses from single occurence or event Reinsurance Recoverable, Maximum Sum of the amount of risk reinsured in excess of stated retention and stated amount that is the upper retention limit. Deferred Tax Assets, Net Deferred Tax Assets, Net Operating Lease, Weighted Average Discount Rate, Percent Operating Lease, Weighted Average Discount Rate, Percent Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Non-cancellable obligations Non Cancellable Obligations CF The change to cash flow during the reporting period in Non Cancellable Obligations. Total in-force, including final audit premium Total in-force, including final audit premium Total in-force, including final audit premium Additional paid-in capital Additional Paid in Capital, Common Stock Share-based compensation options, exercise price on grant date Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price Accident year 2016 Short-Duration Insurance Contracts, Accident Year 2016 [Member] Cerity Segment [Member] Cerity Segment [Member] Cerity Segment [Member] Current state and local tax expense (benefit) Current State and Local Tax Expense (Benefit) Finance Lease, Liability, to be Paid, Year Three Finance Lease, Liability, to be Paid, Year Three Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Year nine Short-Duration Insurance Contracts, Historical Claims Duration, Year Nine Share Repurchase Program [Domain] Share Repurchase Program [Domain] Lessee, Operating Lease, Liability, to be Paid, after Year Five Lessee, Operating Lease, Liability, to be Paid, after Year Five Net investment income Net Investment Income Equity Component [Domain] Equity Component [Domain] SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Affiliation with Registrant [Domain] SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Affiliation with Registrant [Domain] Supplemental Balance Sheet Information Related to Leases Supplemental Balance Sheet Information Related to Leases [Table Text Block] Supplemental Balance Sheet Information Related to Leases Summary of income tax contingencies table Summary of Income Tax Contingencies [Table Text Block] Year seven Short-Duration Insurance Contracts, Historical Claims Duration, Year Seven Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] Effective Income Tax Rate Reconciliation, Percent [Abstract] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Fixed maturity securities at fair value (amortized cost $2,366.7 at December 31, 2022 and $2,266.3 at December 31, 2021, less CECL allowance of $4.5 at December 31, 2022 and $0.2 at December 31, 2021) Fixed maturity securities, fair value Fixed maturity securities at fair value (amortized cost $7.9 at December 31, 2022 and $9.1 at December 31, 2021) Debt Securities, Available-for-Sale Short Duration Insurance Contracts [Abstract] Short Duration Insurance Contracts [Abstract] Short Duration Insurance Contracts [Abstract] Performance share awards, expected target Performance share awards, expected target Performance share awards, based on the expectation of the Company achieving a target rate. Weighted average exercise price, forfeitures Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Line of Credit Facility, Increase, Accrued Interest Line of Credit Facility, Increase, Accrued Interest Cash transactions related to stock-based compensation Cash transactions related to stock based compensation Fair market value of stock withheld to satisfy minimum employee tax withholding Paid losses Reinsurance Recoverable, Paid Losses, Less Allowance Reinsurance Recoverable, Paid Losses Premiums Earned, Net Premiums Earned, Net [Abstract] Historical Incurred and Paid Losses and LAE [Abstract] Historical Incurred and Paid Losses and LAE [Abstract] Historical Incurred and Paid Losses and LAE [Abstract] Entity Address, State or Province Entity Address, State or Province Income Taxes [Abstract] Income Taxes [Abstract] Income Taxes [Abstract] Award Type [Axis] Award Type [Axis] Accident year 2013 Short-Duration Insurance Contracts, Accident Year 2011 [Member] EAC Employers Assurance Company [Domain] Employers Assurance Company (EAC) Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Short-term investments, amortized cost Other Short-Term Investments Total liabilities Liabilities Unearned premiums Increase (Decrease) in Unearned Premiums Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Remaining Lease Term Unallocated LAE Short-Duration Insurance Contracts, Liability for Unpaid Claims and Claims Adjustment Expense, Accumulated Unallocated Claim Adjustment Expense Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Safe harbor matching 50% Safe Harbor Matching 50% Safe habor matching consists of 50% matching contribution on salary deferrals from 3% to 5%. Liabilities for unpaid 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 (in shares) Entity Common Stock, Shares Outstanding Short-duration Insurance Contracts, Claims Development [Table] Short-Duration Insurance Contracts, Claims Development [Table] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Reinsurance Agreement, Name [Domain] Reinsurance Agreement, Name [Domain] Reinsurance Agreement, Name [Domain] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Document Type Document Type Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Capital Contributions to subsidiary Capital Contributions to subsidiary Capital Contributions to subsidiary Expenses Cost of Revenue [Abstract] Finance Lease, Liability, Payment, Due [Abstract] Finance Lease, Liability, to be Paid [Abstract] Assets Held-in-trust [Abstract] Assets Held-in-trust [Abstract] Deferred income tax expense (benefit) Deferred income tax expense Deferred Income Tax Expense (Benefit) Investments Investments [Abstract] Schedule of Investment Income, Reported Amounts, by Category [Line Items] Net Investment Income [Line Items] Net written premiums to surplus ratio. Florida statute section 624.4095 requires net written premiums times 1.25 not exceed this ratio. Net Written Premiums to Surplus Ratio Net Written Premiums to Surplus Ratio. Florida statute section 624.4095 requires net written premiums times 1.25 not exceed this ratio. Other Investments [Member] Other Investments [Member] Segment Table [Abstract] Segment Table [Abstract] Segment Table [Abstract] Deferred Policy Acquisition Costs, Policy Deferred Policy Acquisition Costs, Policy [Policy Text Block] Total net payments for losses and LAE during the period Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Company's contributions to Employers 401(k) Defined Benefit Plan, Plan Assets, Contributions by Employer Unrealized AFS investment (losses) gains during the period, net of tax benefit (expense) of $53.8, $13.6, and $(14.2) for the years ended December 31, 2022, 2021, and 2020, respectively OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Accelerated Share Repurchase Program, Adjustment Accelerated Share Repurchase Program, Adjustment Finite-lived Intangible Assets Acquired Finite-Lived Intangible Assets Acquired Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Premiums receivable from policyholders for final audit Premiums Receivable from policyholders for final audit Premiums Receivable included additional premium expected to be received from policyholders for final audit. Available-for-sale: Debt Securities, Available-for-Sale, Gain (Loss) [Abstract] Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity Attributable to Parent [Abstract] Due after one year through five years, amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax Residential Mortgage Backed Securities [Member] Residential Mortgage-Backed Securities [Member] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Cloud computing arrangements Cloud computing arrangements Amount related to Cloud Computing Arrangements. Share-based compensation expense, Period for Recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Weighted average remaining contractual life Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Estimated fair value of financial instruments table Fair Value, by Balance Sheet Grouping [Table Text Block] Purchases of other invested assets Payments to Acquire Other Investments Entity Registrant Name Entity Registrant Name Premium Receivable, Allowance for Credit Loss, Writeoff Premium Receivable, Allowance for Credit Loss, Writeoff Cumulative number of reported claims Short-Duration Insurance Contract, Cumulative Number of Reported Claims Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Incurred losses and LAE, net of reinsurance Short-Duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net Mortgage and asset-backed securities, fair value Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Funds Held in Trust, Reinsurance Agreement [Domain] Funds Held in Trust, Reinsurance Agreement [Domain] Funds Held in Trust, received from Reinsurance Agreement with Clarendon. Leases [Abstract] Leases [Abstract] Total Available for sale Debt Securities and Short-term investments, Unrealized Gain Total Available for sale Debt Securities and Short-term investments, Unrealized Gain Available for sale Debt Securities and Short-term investments, Unrealized Gain Total stockholders' equity Total stockholders’ equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Treasury Stock Treasury Stock [Text Block] Minimum [Member] Minimum [Member] Due in one year or less, amortized cost 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 dollars per share) Common Stock, Par or Stated Value Per Share SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items] SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items] Stock based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Total Available for sale investments Total Available for sale investments Total Available for sale investments Entity File Number Entity File Number Trading Symbol Trading Symbol Statutory accounting practices disclosure table Statutory Accounting Practices Disclosure [Table Text Block] Marketable Securities, Gain (Loss), Excluding Other-than-temporary Impairment Loss Marketable Securities, Gain (Loss), Excluding Other-than-temporary Impairment Loss Commission expense Insurance Commissions Schedule of Investment Income, Reported Amounts, by Category [Table] Investment Income [Table] Title of Individual [Axis] Title of Individual [Axis] Proceeds from Lines of Credit Proceeds from Lines of Credit Fair Market Value of Stock Options Granted, Calculated [Abstract] Fair Market Value of Stock Options Granted, Calculated [Abstract] Fair Market Value of Stock Options Granted, Calculated [Abstract] Assumed premiums earned Assumed Premiums Earned Interest Expense, Loans from Other Federal Home Loan Banks Interest Expense, Loans from Other Federal Home Loan Banks Stock Option [Member] Equity Option [Member] Cumulative paid losses and LAE, net of reinsurance Short-Duration Insurance Contracts, Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net Business Combination, Consideration Transferred, Liabilities Incurred Business Combination, Consideration Transferred, Liabilities Incurred Reinsurance, Policy Reinsurance Accounting Policy [Policy Text Block] Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Income Taxes Income Tax Disclosure [Text Block] Stock-based compensation expense [Abstract] Stock-Based Compensation Expense [Abstract] Stock-based compensation expense [Abstract] Debt, Weighted Average Interest Rate Debt, Weighted Average Interest Rate Recoverables was related to the LPT agreement Reinsurance Recoverable, from LPT Agreement The known and estimated amount recoverable as of the balance sheet date from reinsurers for claims paid or incurred by the ceding insurer and associated claims settlement expenses, including estimated amounts for claims incurred but not reported, and policy benefits, net of any related valuation allowance due to LPT Agreement. Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Year ten Short-Duration Insurance Contracts, Historical Claims Duration, Year 10 Preferred stock, $0.01 par value; 25,000,000 shares authorized; none issued Preferred Stock, Value, Outstanding Basic Earnings Per Share, Basic Options vested, fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value New Accounting Pronouncements or Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Deferred Tax Asset, Debt Securities, Trading, Unrealized Loss Deferred Tax Asset, Debt Securities, Trading, Unrealized Loss Equity securities: Debt Securities, Trading and Available-for-Sale [Abstract] Indefinite-lived Intangible Assets by Major Class [Axis] Indefinite-Lived Intangible Assets [Axis] Due after five years through ten years, amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Debt Securities, Available-for-sale, Allowance for Credit Loss Debt Securities, Available-for-Sale, Allowance for Credit Loss Entity Interactive Data Current Entity Interactive Data Current Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Ceded premiums earned Ceded Premiums Earned Schedule of Property and Equipment [Table] Property, Plant and Equipment [Table] Change in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Total change in net unrealized gains (losses) Investments, Change in Net Unrealized Gains (Losses) The item represents the change in net unrealized gains (losses) for all fixed maturity and equity securities. Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Finance Lease, Liability, to be Paid, Year Five Finance Lease, Liability, to be Paid, Year Five 2018 Program [Member] 2018 Program [Member] 2018 Program Acquisition of common stock Payments for Repurchase of Common Stock Income Taxes, Policy Income Tax, Policy [Policy Text Block] Lessee, Operating Lease, Renewal Term Lessee, Operating Lease, Renewal Term Other Investments, at Cost Other Investments and Securities, at Cost FLORIDA FLORIDA Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Performance share awards, minimum payout Performance Share Awards, Minimum Payout Performane Share Awards, minimum payout based on certain performance targets. Letters of Credit [Abstract] Letters of Credit [Abstract] Letters of Credit [Abstract] Equity Securities [Member] Equity Securities, Investment Summary [Member] Statutory Accounting Practices, Future Dividend Payments Restrictions Statutory Accounting Practices, Future Dividend Payments Restrictions Revenue from External Customers by Geographic Areas [Table Text Block] Revenue from External Customers by Geographic Areas [Table Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Due after ten years, amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Cloud computing arrangements Cloud Computing Arrangements CF The change to cash flow during the reporting period in Cloud Computing Arrangements. Scenario [Domain] Scenario [Domain] Allowance for bad debt Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Accounts Receivable, Allowance for Credit Loss Fair Value, Recurring [Member] Fair Value, Recurring [Member] Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price LPT Agreement [Abstract] LPT Agreement [Abstract] LPT Agreement [Abstract] Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Document Fiscal Year Focus Document Fiscal Year Focus Impact to the company's minimum tax credit due to tax enactment Impact on the Amount of the Company's Minimum Tax Credit Due to Tax Enactment Impact on the amount of the Company's minimum tax credit due to change in the tax laws. Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Payments on finance leases Finance Lease, Principal Payments Federal Home Loan Bank [Member] Federal Home Loan Bank of San Francisco [Member] Changes in Outstanding Stock Options [Abstract] Changes in Outstanding Stock Options [Abstract] Changes in Outstanding Stock Options [Abstract] Unpaid losses and loss adjustment expenses Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve Investments, Held in Trust or on Deposit [Abstract] Investments, Held in Trust or on Deposit [Abstract] Investments, Held in Trust or on Deposit [Abstract] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] CALIFORNIA CALIFORNIA New Accounting Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Current income tax expense (benefit) Current Income Tax Expense (Benefit) Fair Value of Financial Instruments [Abstract] Fair Value of Financial Instruments [Abstract] Fair Value of Financial Instruments [Abstract] Deferred Tax Liabilities [Abstract] Deferred Tax Liabilities, Gross [Abstract] Weighted average exercise price, vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Operating Lease, Expense Operating Lease, Expense Other Invested Assets [Abstract] Other Invested Assets [Abstract] Other Invested Assets [Abstract] Line of Credit Facility, Current Borrowing Capacity Line of Credit Facility, Current Borrowing Capacity Stock based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Goodwill Goodwill Treasury stock, at cost (in shares) Treasury Stock, Shares Property and Equipment by Type [Axis] Long-Lived Tangible Asset [Axis] Notes Payable Notes Payable Unpaid losses (less CECL allowance of $0.9 at December 31, 2022 and $0.6 at December 31, 2021) Unpaid losses Reinsurance Recoverable, Unpaid Losses, Less Allowance The known and estimated amount recoverable as of the balance sheet date from reinsurers for claims paid or incurred by the ceding insurer and associated claims settlement expenses, including estimated amounts for claims incurred but not reported, and policy benefits, net of any related valuation allowance. Federal income taxes receivable Income Taxes Receivable Collateralized by cash or letter of credit Funds Held under Reinsurance Agreements, Liability Income tax expense Income Tax Expense (Benefit) Geographical [Domain] Geographical [Domain] Deferred Income Tax Liabilities, Net Deferred Income Tax Liabilities, Net EICN Employers Insurance Company of Nevada [Member] Employers Insurance Company of Nevada is a subsidiary of the Parent. Entity Public Float Entity Public Float Change in unrealized gains (losses) Debt Securities, Available-for-Sale, Unrealized Gain (Loss) [Abstract] Equity securities, FV-NI, realized loss Equity Securities, FV-NI, Realized Loss Accumulated depreciation, depletion and amortization, property and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment LPT favorable/ unfavorable difference, percentage LPT favorable/ unfavorable difference, percentage Reinsurers pays the Company a % of any favorable difference between the actual and expected amounts paid at each calculation point. Conversely, the Company could be required to return any previously paid contingent profit commission, plus interest, in the event of unfavorable differences. Loss Contingencies [Line Items] Loss Contingencies [Line Items] Credit Risk, Policy Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block] Total investments Investments Investments Common stock, $0.01 par value; 150,000,000 shares authorized; 57,876,287 and 57,690,254 shares issued and 27,160,748 and 27,741,400 shares outstanding at December 31, 2022 and 2021, respectively Common Stock, Value, Issued Accelerated Share Repurchases [Table] Accelerated Share Repurchases [Table] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 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 Other Income Involuntary assigned risk business Related to Involuntary Assigned Risk Business [Member] Related to the Company's involuntary assigned risk business. Cash, cash equivalents, and restricted cash at the beginning of the period Cash, cash equivalents, and restricted cash at the end of the period Total cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Routine/other Deferred Other Tax Expense (Benefit) Adjustments for Change in Accounting Principle [Domain] Change in Accounting Principle, Type [Domain] Income tax reconciliation, other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount LPT actual amounts paid versus expected amounts, period LPT Agreement Calculation of Contingent Commission, Period LPT Agreement Calculation of Contingent Commission. The calculation of actual amounts paid versus expected amounts is determined every five years beginning June 30, 2004. Unrealized gain (loss) on investments table Unrealized Gain (Loss) on Investments [Table Text Block] Loss reserves discounting for tax reporting Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Loss Reserves Amendment Flag Amendment Flag Final audit premium Final audit premium Final audit premium Lessee, Operating Lease, remaining lease term Lessee, Operating Lease, Remaining Lease Term Investment Type [Axis] Investment Type [Axis] Other comprehensive (loss) income, net of tax Other Comprehensive Income (Loss), Net of Tax Deferred reinsurance gain—LPT Agreement Deferred Reinsurance Gain LPT Agreement Deferred reinsurance gain–LPT Agreement reflects the unamortized gain from our LPT Agreement, a retroactive 100% quota share reinsurance agreement. This gain is deferred and is being amortized using the recovery method. Amortization is determined by the proportion of actual reinsurance recoveries to total estimated recoveries over the life of the LPT Agreement, except for the gains associated with the contingent profit commission, which is amortized through June 30, 2024. The amortization is reflected in losses and LAE Year five Short-Duration Insurance Contracts, Historical Claims Duration, Year Five Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Debt securities, available-for-sale, gross unrealized gain Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Deferred Tax Assets [Abstract] Components of Deferred Tax Assets [Abstract] Consolidated Statements of Cash Flows [Abstract] Consolidated Statements of Cash Flows [Abstract] Consolidated Statements of Cash Flows [Abstract] Capital expenditures and other Payments to Acquire Other Property, Plant, and Equipment Goodwill and Other Intangible Assets, Policy Goodwill and Intangible Assets, Policy [Policy Text Block] Number of exercisable options or share units Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Deposit Assets [Abstract] Deposit Assets [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Deduct payments for losses and LAE, net of reinsurance, related to: Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract] Letter of credit, unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Statutory Accounting Practices, Statutory Amount Available for Dividend Payments with Regulatory Approval Statutory Accounting Practices, Statutory Amount Available for Dividend Payments with Regulatory Approval Accident Year 2015 Short-Duration Insurance Contracts, Accident Year 2015 [Member] Cash equivalents measured at NAV, which approximates fair value Cash Equivalents Measured at Net Asset Value Cash equivalents measured at net asset value. Total AFS Investments [Domain] Total AFS Investments [Domain] Total Fixed Maturities and Short-term Investments. Required by various state laws and regulations to hold securities or letters of credit in depository account [Member] Required by various state laws and regulations to hold securities or letters of credit in depository account [Member] Company is required by various state laws and regulations to hold securities or letters of credit in depository accounts with certain states in which it does business. Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Statutory Financial Data Disclosure Statutory Financial Data Disclosure [Text Block] The entire disclosure for all significant statutory financial data as reported in the financial statements. Debt Securities, number of issues in loss position, less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Proceeds from FHLB advances Proceeds from FHLBank Advance, Investing Activities Operating Lease, Payments Operating Lease, Payments Employee Benefit and Retirement Plans [Abstract] Employee Benefit and Retirement Plans [Abstract] Employee Benefit and Retirement Plans [Abstract] Total Available for sale Debt Securities and Short-term investments, Unrealized Loss Total Available for sale Debt Securities and Short-term investments, Unrealized Loss Available for sale Debt Securities and Short-term investments, Unrealized Loss Stock Options [Member] Share-Based Payment Arrangement, Option [Member] Treasury stock, at cost (30,715,539 shares at December 31, 2022 and 29,948,854 shares at December 31, 2021) Treasury Stock, Value Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss Capital stock and unassigned surplus Statutory Accounting Practices, Statutory Capital and Surplus, Balance Write-offs, net of recoveries of amounts previously written off Accounts Receivable, Allowance for Credit Loss, Current Contingent commission receivable–LPT Agreement Contingent Commission Receivable LPT Agreement CFS The increase (decrease) during the reporting period of contingent commission receivable related to the LPT Agreement, a retroactive 100% quota share reinsurance agreement. Stock options exercised, value Stock Issued During Period, Value, Stock Options Exercised Accelerated share repurchases, final price paid per share Accelerated Share Repurchases, Final Price Paid Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Intercompany payable/receivable Intercompany payable (receivable) for Operating Activities Intercompany payable (receivable) for Operating Activities used in condensed statement of cash flow. Total expenses Total expenses Operating Expenses Amount of Insurance-related assessment liability Loss Contingency, Discounted Amount of Insurance-related Assessment Liability Maximum [Member] Maximum [Member] 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] NEW YORK NEW YORK Cash and cash equivalents Cash and cash equivalents at the beginning of the period Cash and cash equivalents at the end of the period Cash and Cash Equivalents, at Carrying Value Collateralized Loan Obligations Collateralized Loan Obligations [Member] Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible Assets, Net (Excluding Goodwill) [Abstract] Net realized and unrealized (losses) gains on investments Realized Investment Gains (Losses) [Abstract] Measurement Frequency [Domain] Measurement Frequency [Domain] Maximum Percentage of Shares Subject to Forfeiture Maximum Percentage of Shares Subject to Forfeiture Maximum Percentage of Shares Subject to Forfeiture Parentheticals [Abstract] Parentheticals [Abstract] Parentheticals [Abstract] Schedule of share-based compensation arrangement by share-based payment award, options, vested and expected to vest, outstanding table Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block] Line of Credit Facility [Table] Letters of Credit [Table] Line of Credit Facility [Table] Purchases of fixed maturity securities Payments to Acquire Debt Securities, Available-for-Sale Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain (Loss), before Tax Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax Dilutive Securities by Type [Domain] Dilutive Securities by Type [Domain] Dilutive Securities by Type [Domain] Cash Flow, Supplemental Disclosures [Text Block] Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Mortgage and asset-backed securities, amortized cost Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Less: related tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit Dilutive Securities [Axis] Dilutive Securities [Axis] Dilutive Securities [Axis] Management Management [Member] Title of 12(b) Security Title of 12(b) Security Statutory Accounting Practices [Table] Statutory Accounting Practices [Table] Short-Term Investments Short-Term Investments Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Segment Reporting Disclosure [Text Block] Segment Reporting Disclosure [Text Block] Net amortization on investments Accretion (Amortization) of Discounts and Premiums, Investments Percentage of unassigned gains used to calculate 10% of surplus, with dividends payable limited to unassigned funds minus 25% of unrealized capital gains Percentage of Unassigned Gains Percentage of Unassigned Gains used to calculate the following: 10% of surplus, with dividends payable limited to unassigned funds minus 25% of unrealized capital gains Officer [Member] Officer [Member] Schedule of intangible assets table Schedule of Intangible Assets and Goodwill [Table Text Block] 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, Accumulated Loss Deferred income taxes, net Deferred income taxes, net Deferred Tax Liabilities, Net Accident year 2012 Short-Duration Insurance Contracts, Accident Year 2012 [Member] Deferred reinsurance gain–LPT Agreement Deferred reinsurance gain LPT Agreement CFS The increase (decrease) during the reporting period in Deferred reinsurance gain–LPT Agreement, which reflects the unamortized gain from our LPT Agreement, a retroactive 100% quota share reinsurance agreement. Liabilities and stockholders' equity Liabilities and Equity [Abstract] Estimate of Fair Value Measurement [Member] Estimate of Fair Value Measurement [Member] US Treasury Securities [Member] US Treasury Securities [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies [Abstract] Current year Current Year Claims and Claims Adjustment Expense Equity securities, cost Equity Securities, FV-NI, Cost Accumulated depreciation, depletion and amortization, property and equipment Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Weighted average number of shares outstanding - basic Weighted Average Number of Shares Outstanding, Basic Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] Loss reinsurance recoverable, excluding bad debt, on unpaid losses Loss reinsurance recoverable, excluding bad debt, on unpaid losses Reinsurance recoverable on unpaid losses Reinsurance Recoverable, Unpaid Losses Excluding Allowance The known and estimated amount recoverable as of the balance sheet data from reinsurers for claims paid or incurred by the ceding insurer and associated claims settlement expenses, including estimated amounts for claims incurred but not reported and policy benefits, excluding any related valuation allowance. Expected realization period for assets related to policy surcharges Loss Contingency, Discounted Amount of Insurance-related Assessment Liability, Realization Period for Associated Asset Offsets Prior years Prior Year Claims and Claims Adjustment Expense Funds held by or deposited with reinsurers Funds Held under Reinsurance Agreements, Asset Deferred tax expense Accumulated Other Comprehensive Income, Deferred Tax on Net Unrealized Gains Accumulated Other Comprehensive Income, Deferred Tax on Net Unrealized Gains Accelerated Share Repurchases [Line Items] Accelerated Share Repurchases [Line Items] Premium Receivable, Allowance for Credit Loss, Recovery Premium Receivable, Allowance for Credit Loss, Recovery Property and Equipment [Line Items] Property, Plant and Equipment [Line Items] Premium Deficiency Premium Deficiency If the sum of a policy’s expected losses and LAE and deferred policy acquisition costs exceeds the related unearned premiums and projected investment income, a premium deficiency is determined to exist. In this event, deferred policy acquisition costs are immediately expensed to the extent necessary to eliminate the premium deficiency. If the premium deficiency exceeds deferred acquisition costs then a liability is accrued for the excess deficiency. Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Accident year 2013 Short-Duration Insurance Contracts, Accident Year 2013 [Member] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Current federal income taxes Federal income taxes Increase (Decrease) in Income Taxes Payable Fair value, assets measured on recurring basis, unobservable input reconciliation table Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Lessee, Leases, Policy Lessee, Leases [Policy Text Block] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Net income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Schedule of compensation cost for share-based payment arrangements, allocation of share-based compensation costs by plan table Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Reinsurance quota share, percentage Reinsurance Quota Share, Percentage Agreement where the assuming company shares proportionally in the premiums and losses of the ceding company Deferred income tax expense Increase (Decrease) in Deferred Income Taxes Premiums written, net Premiums Written, Net Premiums Written, Net Loss on Sale of Investments Loss on Sale of Investments Reinsurance recoverable for: Reinsurance Recoverable For [Abstract] -- None. No documentation exists for this element. -- Deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Consolidated Statement of Stockholders Equity Parentheticals [Abstract] Consolidated Statement of Stockholders Equity Parentheticals [Abstract] Consolidated Statement of Stockholders Equity Parentheticals [Abstract] Total gross realized gains Investments, Gross Realized Gains Total gross realized gains for all fixed maturity and equity securities. Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Dekania Surplus Note [Member] Dekania Surplus Note [Member] Dekania Surplus Note due April 30, 2034 with variable interest of 425 basis points above 90-day LIBOR. Payments to Acquire Businesses, Net of Cash Acquired Payments to Acquire Businesses, Net of Cash Acquired Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Florida statute section 624.408 requires EPIC and EAC to maintain minimum capital and surplus of the greater of $4.0 million or 10% of total liabilities. Percentage of Total Liabilties, Maintain Minimum of Capital and Surplus Percentage of Total Liabilties. Florida statute requires domiciled companies to maintain minimum of capital and surplus Current Fiscal Year End Date Current Fiscal Year End Date Federal Home Loan Bank Stock Federal Home Loan Bank Stock Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Intangible assets, net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Stock-based obligations (Note 14), value APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Net unpaid losses and LAE at beginning of period Ending unpaid losses and LAE, net of reinsurance Liability for Unpaid Claims and Claims Adjustment Expense, Net Premium Receivable, Allowance for Credit Loss, Period Increase (Decrease) Premium Receivable, Allowance for Credit Loss, Period Increase (Decrease) Equity securities, FV-NI, unrealized gain (loss) Equity Securities, FV-NI, Unrealized Gain (Loss) Revaluation of deferred tax asset Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Proceeds from maturities of short-term investments Proceeds from Sale, Maturity and Collection of Short-Term Investments Reinsurance Reinsurance [Text Block] Reinsurance, Amount Retained, Per Policy Reinsurance, Amount Retained, Per Policy Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Finance Lease, Weighted Average Remaining Lease Term Finance Lease, Weighted Average Remaining Lease Term Fair Value Disclosures [Abstract] Total net losses and LAE incurred during the period Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Employee contributions, maximum match, percentage Employee contributions, Maximum Match 401(k) The company will match employee contributions up to 5%. From 3% to 5% the Company will only match 50% for every dollar. Change in net unrealized gains on investments, net of taxes OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract] Entity Tax Identification Number Entity Tax Identification Number Maximum number of shares reserved for grants Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Proceeds from sale of equity securities Proceeds from Sale of Equity Securities, FV-NI Liability for Unpaid Losses and Loss Adjustment Expenses Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] Notes to Condensed Financial Statments [Abstract] Notes to Condensed Financial Statments [Abstract] Notes to Condensed Financial Statments [Abstract] Consolidated Entities [Domain] Consolidated Entities [Domain] Federal Home Loan Bank, Advances, Weighted Average Interest Rate Federal Home Loan Bank, Advances, Weighted Average Interest Rate Coverage provided under LPT agreement Guarantor Obligations, Maximum Exposure, Undiscounted Reconciliation of federal staturoty income tax rates to the effective tax rates table Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Net increase (decrease) in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Line of Credit Facility, Commitment Fee Amount Line of Credit Facility, Commitment Fee Amount Investment Owned, at Cost Investment Owned, at Cost Year one Short-Duration Insurance Contracts, Historical Claims Duration, Year One Entity Central Index Key Entity Central Index Key Investment income related to fixed maturity securities and short-term investments and cash equivalents Investment Income, Interest Short-duration Insurance Contracts, Accident Year [Axis] Short-Duration Insurance Contracts, Accident Year [Axis] Comprehensive (loss) income Other Comprehensive Income (Loss), before Tax [Abstract] Average annual percentage payout of incurred claims by age, net of reinsurance Short-Duration Insurance Contracts, Historical Claims Duration [Line Items] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Commissions and premium taxes payable Commisions And Premium Taxes Payable Amount due to other broker-dealers or clearing organizations for executing or clearing trades or orders and carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Business Combination, Consideration Transferred Business Combination, Consideration Transferred Employee contributions, 100% match, percentage Employee Contributions, 100% Match Employee Contributions up to 3% is matched by the Company at 100%. Letter of credit, expiration date Line of Credit Facility, Expiration Date Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract] Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Number of Positions [Abstract] Entity [Domain] Entity [Domain] Notes Payable Outstanding [Abstract] Notes Payable Outstanding [Abstract] Notes Payable Outstanding [Abstract] Intercompany payable Intercompany payable Intercompany payable City Area Code City Area Code Assets Assets [Abstract] Other Increase (Decrease) in Other Operating Assets and Liabilities, Net Sovereign Debt Sovereign Debt [Member] Unrealized loss on investments table Schedule of Unrealized Loss on Investments [Table Text Block] Dividend to common stockholders, shares Common Stock Dividends, Shares Unfunded commitment, private investment fund Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Table] SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Table] Net gross premiums to surplus ratio. Florida statute section 624.4095 requires net gross premiums times 1.25 not exceed this ratio. Gross Written Premiums to Surplus Ratio Gross Written Premiums to Surplus Ratio. Florida statute section 624.4095 requires gross written premiums times 1.25 not exceed this ratio. Reinsurance Recoverable, Allowance for Credit Loss, Period Increase (Decrease) Reinsurance Recoverable, Allowance for Credit Loss, Period Increase (Decrease) Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Weighted average grant date fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Equity in earnings of subsidiaries Income (Loss) from Equity Method Investments Notes to Condensed Financial Statements [Abstract] Notes to Condensed Financial Statements [Abstract] Notes to Condensed Financial Statements [Abstract] Financed property and equipment purchases Payments to Acquire Property, Plant, and Equipment Intangible assets, gross carrying amount Intangible Assets Gross Carrying Amount Intangible assets gross carrying amount total Finance Lease, Liability, to be Paid, after Year Five Finance Lease, Liability, to be Paid, after Year Five Net income and weighted average common shares outstanding used in earnings per share calculations table Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Line of Credit Facility, Interest Rate at Period End Line of Credit Facility, Interest Rate at Period End Debt Securities, Available-for-sale, Realized Loss Debt Securities, Available-for-Sale, Realized Loss Unearned premiums Unearned Premiums Automobiles Automobiles [Member] Basis of Presentation Business Description and Basis of Presentation [Text Block] Notes Payable [Abstract] Notes Payable [Abstract] Due in one year or less, fair value Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Supplemental Information, Property-Casualty Insurance Underwriters [Abstract] Supplemental Information, Property-Casualty Insurance Underwriters [Abstract] Supplemental Information, Property-Casualty Insurance Underwriters [Abstract] Liability for Unpaid Losses and Loss Adjustment Expenses [Abstract] Liability for Unpaid Losses and Loss Adjustment Expenses [Abstract] Liability for Unpaid Losses and Loss Adjustment Expenses [Abstract] Lessee, Operating Lease, Liability, to be Paid Lessee, Operating Lease, Liability, to be Paid SAP, net income amount Statutory Accounting Practices, Statutory Net Income Amount Proceeds from maturities of short-term investments Proceeds from Maturities, Prepayments and Calls of Short-Term Investments Debt Instrument, Covenant Description Debt Instrument, Covenant Description Entity Address, Postal Zip Code Entity Address, Postal Zip Code Operating lease right-of-use-assets Increase (Decrease) Operating Lease Right-of-use Assets Increase (Decrease) Operating Lease Right-of-use Assets Debt Securities, Available-for-sale, Allowance for Credit Loss, Securities Sold Debt Securities, Available-for-Sale, Allowance for Credit Loss, Securities Sold LPT actual amounts paid versus expected amounts, expiration period LPT Agreement Calculation of Contingent Commission, Expiration Period LPT Agreement Calculation of Contingent Commission, Expiration Period. The calculation of actual amounts paid versus expected amounts is determined every five years beginning June 30, 2004 for the first twenty-five years. Accident year 2017 Short-Duration Insurance Contracts, Accident Year 2017 [Member] Total investments at fair value, estimated fair value Investments, Fair Value Disclosure Net impact of tax enactment on net unrealized gains on investments Reclass Net Tax Effects Stranded in AOCI due to Tax Enactment Reclassify certain net tax effects stranded in accumulated other comprehensive income as a result of tax reform to retained earnings. Letter of credit, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Short-duration Insurance Contracts, Schedule of Historical Claims Duration [Table Text Block] Short-Duration Insurance Contracts, Schedule of Historical Claims Duration [Table Text Block] Non-cancellable obligations Non Cancellable Obligations Amount of non-cancellable obligations on the Balance Sheet of the Company. Fair value investments entities that calculate net asset value per share liquidating investment original expected lives increments Fair value investments entities that calculate net asset value per share liquidating investment original expected lives increments Increments to average original expected period the underlying assets are expected to be liquidated by the investees for investments for which net asset value per share is calculated. Statistical Measurement [Domain] Statistical Measurement [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table Text Block] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table Text Block] Stock-Based Compensation Disclosure Stock-Based Compensation Disclosure [Text Block] Stock-Based Compensation Disclosure Year six Short-Duration Insurance Contracts, Historical Claims Duration, Year Six AFS, net realized gains (losses) Debt Securities, Available-for-Sale, Realized Gain (Loss) [Abstract] Consolidated Statements of Stockholders Equity [Abstract] Consolidated Statements of Stockholders Equity [Abstract] Consolidated Statements of Stockholders Equity [Abstract] Other liabilities FinanceLeaseLiabilityStatementOfFinancialPosition FinanceLeaseLiabilityStatementOfFinancialPosition Property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Acquisition of treasury stock (Note 13), value Treasury Stock, Value, Acquired, Cost Method Net income Net income for the period Net income Net Income (Loss) Attributable to Parent Due after one year through five years, fair value Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Debt Securities [Member] Debt Securities [Member] Other Intangible Assets [Member] Other Intangible Assets [Member] Final audit policies in-force Final audit policies in-force Final audit policies in-force Scenario [Axis] Scenario [Axis] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Short-duration Insurance Contracts, Historical Claims Duration [Table] Short-Duration Insurance Contracts, Historical Claims Duration [Table] Equity Securities [Line Items] Debt and Equity Securities [Line Items] Debt and Equity Securities, FV-NI [Line Items] Industrial and miscellaneous Industrial, Miscellaneous, and All Others [Member] Commitments and Contingencies [Abstract] Commitments and Contingencies [Abstract] Commitments and Contingencies [Abstract] US States and Political Subdivisions Debt Securities [Member] US States and Political Subdivisions Debt Securities [Member] Amortization of cloud computing arrangements Capitalized Computer Software, Amortization Net stock-based compensation expense Share-Based Payment Arrangement, Expense, after Tax Cloud Computing Arrangements, Policy Research, Development, and Computer Software, Policy [Policy Text Block] Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table] Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table] Complete disclosure pertaining to an entity's basic and diluted earnings per share. Policies In force Policies In force Policies In force Intangible assets Deferred Tax Liabilities, Goodwill and Intangible Assets Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Paid losses and LAE claims related to LPT Paid Losses and LAE Claims Related to LPT Paid Losses and LAE Claims Related to LPT. Accident Year 2014 Short-Duration Insurance Contracts, Accident Year 2014 [Member] Percentage of surplus of EICN's statutory surplus as regards to policyholders Statutory Surplus, Percentage Of Percentage of statutory surplus. New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Net cash provided by operating activities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Acquire Statutory Capital and Surplus Acquire Statutory Capital and Surplus The Estimated Amount of Statutory Capital and Surplus Acquired as Part of The Stock Purchase Agreement. Stock-Based Compensation [Abstract] Stock-Based Compensation [Abstract] Stock-Based Compensation [Abstract] Schedule of share-based compensation, restricted stock and restricted stock units activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Debt Securities, Available-for-sale Debt Securities, Available-for-Sale [Table Text Block] Short-duration Insurance Contracts, Claims Development [Table Text Block] Short-Duration Insurance Contracts, Claims Development [Table Text Block] Other liabilities Other Liabilities SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Affiliation with Registrant [Axis] SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Affiliation with Registrant [Axis] Investments, Investment Income [Abstract] Investments, Investment Income [Abstract] Investments, Investment Income [Abstract] Operating lease liabilities Increase (Decrease) Operating Lease Liabilities Increase (Decrease) Operating Lease Liabilities Number of options or share units, forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate by Type [Axis] Document Annual Report Document Annual Report Performane share awards, maximum payout Performane Share Awards, maximum payout Performane Share Awards, maximum payout based on certain performance targets. Legal Entity [Axis] Legal Entity [Axis] Change in Accounting Estimate, Type [Domain] Change in Accounting Estimate, Type [Domain] Condensed Statements of Cash Flows [Abstract] Condensed Statements of Cash Flows [Abstract] Condensed Statements of Cash Flows [Abstract] Geographical [Axis] Geographical [Axis] Debt Securities, Available-for-sale, Allowance for Credit Loss Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table Text Block] Total in-force policies, includingfinal audit Total in-force policies, includingfinal audit Total in-force policies, includingfinal audit Prior years Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Vesting rights for options awarded Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights Reinsurance [Table] Reinsurance [Table] Reinsurance [Table] Property, plant and equipment table Property, Plant and Equipment [Table Text Block] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Contingencies Surrounding insurance Assessments [Abstract] Contingencies Surrounding insurance Assessments [Abstract] Contingencies Surrounding insurance Assessments [Abstract] Segments [Axis] Segments [Axis] Notes Payable Debt Disclosure [Text Block] Compensation and Employee Benefit Plans Compensation and Employee Benefit Plans [Text Block] Entity Shell Company Entity Shell Company Payments to acquire business, net Payments to acquire business, net Net cash amount paid to acquire business Direct premiums earned Direct Premiums Earned Investment income table Investment Income [Table Text Block] Lessee, Operating Lease, Liability, to be Paid, Year One Lessee, Operating Lease, Liability, to be Paid, Year One Federal income taxes receivable Accounts Receivable, Related Parties, Current Percentage of unassigned gains used to calculate the lesser of 10% of surplus or net investment income plus a 3-year carry forward with dividends payable limited to unassigned funds minus 25% of unrealized capital gains Percentage of Unassigned Gains2 Percentage of Unassigned Gains used to calculate the following: the lesser of 10% of surplus or net investment income plus a 3-year carry forward with dividends payable limited to unassigned funds minus 25% of unrealized capital gains. Financial Instrument [Axis] Financial Instrument [Axis] Other invested assets (cost $54.4 at December 31, 2022 and $34.1 at December 31, 2021) Other Investments, Total Other Investments Foreign Government Debt Foreign Government Debt [Member] Document Period End Date Document Period End Date Employers Segment [Member] Employers Segment [Member] Employers Segment [Member] Operating Leases [Abstract] Operating Leases [Abstract] Operating Leases [Abstract] Net realized and unrealized losses (gains) on investments Realized gains on investments Gain (Loss) on Sale of Investments Income Tax Examination, Likelihood of Unfavorable Settlement Income Tax Examination, Likelihood of Unfavorable Settlement Sovereign Debt Securities Sovereign Debt Securities [Member] Schedule of accumulated other comprehensive income (loss) table Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Total assets Assets Auditor [Line Items] Year four Short-Duration Insurance Contracts, Historical Claims Duration, Year Four New Accounting Standards [Abstract] New Accounting Standards [Abstract] New Accounting Standards [Abstract] Earnings per common share (Note $18): Earnings per common share for the stated periods (Note 17): Earnings Per Share [Abstract] Fair value, assets and liabilities measured on recurring basis table Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Performance shares units [Member] Performance Shares [Member] Equity Securities, FV-NI Equity securities at fair value (cost $37.5 at December 31, 2022 and $25.2 at December 31, 2021) Equity Securities, FV-NI, Current Schedule of fair value of RSUs vested and instrinsic value of outstanding and vested RSUs table Schedule of Fair Value Of RSUs Vested And Instrinsic Value of Outstanding and Vested RSUs [Table Text Block] Schedule of Fair Value Of RSUs Vested And Instrinsic Value of Outstanding and Vested RSUs [Table Text Block] Weighted average exercise price, exercises Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Lessee, Operating Lease, Liability, to be Paid, Year Five Lessee, Operating Lease, Liability, to be Paid, Year Five Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Gross premiums written Premiums Written, Gross Asset-backed Securities [Member] Asset-Backed Securities [Member] Loss before income taxes and equity in earnings of subsidiaries Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Segments [Domain] Segments [Domain] Earnings Per Share Earnings Per Share [Text Block] Cash paid for interest Interest Paid, Including Capitalized Interest, Operating and Investing Activities Other deferred tax liabilities Deferred Tax Liabilities, Other Total investments at fair value Investments Carried at Fair Value Sum of investments carried at fair value as of the balance sheet date. Cash and Cash Equivalents, Policy Cash and Cash Equivalents, Policy [Policy Text Block] Short-term Investments [Member] Short-Term Investments [Member] Award Type [Domain] Award Type [Domain] Ceded losses and LAE incurred Policyholder Benefits and Claims Incurred, Ceded Computer and software Computer Equipment [Member] Other-than-temporary Impairment Loss, Debt Securities, Portion Recognized in Earnings Other-than-temporary Impairment Loss, Debt Securities, Portion Recognized in Earnings Short-Duration Insurance Contract, Accident Year 2022 Short-Duration Insurance Contract, Accident Year 2022 [Member] % of Shares Subject to Forfeiture Minimum Percentage of Shares Subject to Forfeiture Minimum Percentage of Shares Subject to Forfeiture Stock Repurchase Program Expiration Date Stock Repurchase Program Expiration Date Entity Address, City or Town Entity Address, City or Town IBNR Short-Duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net Change to Contingent Profit Commission [Member] Change to Contingent Profit Commission [Member] Change to Contingent Profit Commission [Member] Total statutory surplus Statutory Accounting Practices, Statutory Capital and Surplus Required Gross premiums, earned Gross premiums, earned Total for all direct earned insurance contracts and earned premiums assumed from other insurers. Extraordinary dividends, approves or does not disapprove the payment within Extraordinary Dividends, Nevada Commissioner of Insurance Response Time in Days A cash or stock dividend prohibited by these restrictions may only be declared and distributed as an extraordinary dividend upon the prior approval of the Nevada Commissioner of Insurance (Nevada Commissioner). EICN may not pay such an extraordinary dividend or make an extraordinary distribution until the Nevada Commissioner either approves or does not disapprove the payment within 30 days after receiving notice of its declaration PSUs awarded to certain officers table PSUs Awarded to Certain Officers [Table Text Block] PSUs Awarded to Certain Officers, including Fair Value on Date of Grant and Aggregate Fair Value on Date of Grant. Claims Development [Line Items] Claims Development [Line Items] Deferred policy acquisition costs Deferred Policy Acquisition Cost Auditor Name Auditor Name Noncash or Part Noncash Acquisition, Investments Acquired Noncash or Part Noncash Acquisition, Investments Acquired Adjustments for New Accounting Pronouncements [Axis] Accounting Standards Update [Axis] Earnings Per Share, Basic and Diluted, by Common Class [Line Items] Earnings Per Share, Basic and Diluted, by Common Class [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Adjustments for Change in Accounting Principle [Axis] Change in Accounting Principle, Type [Axis] Allowance for Credit Losses Allowance for Credit Losses [Text Block] Purchases of short-term investments Payments to Acquire Short-Term Investments Restricted cash and cash equivalents Restricted Cash and Cash Equivalents Restricted stock units (RSUs) Restricted Stock Units (RSUs) [Member] Electronic Data Processing Equipment, Software, Furniture and Equipment and Automobiles [Member] Other Machinery and Equipment [Member] Number of vested options or share units Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available Cash and cash equivalents, estimated fair value Cash and Cash Equivalents, Fair Value Disclosure Parent Company [Member] Parent Company [Member] Total revenues Total revenues Revenues Debt Securities, number of issues in loss position, 12 months or longer Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Net investment income Investment Income, Net Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Net loss before equity in earnings of subsidiaries Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Amortization of intangible assets Amortization of Intangible Assets Condensed Statements of Income [Abstract] Condensed Statements of Income [Abstract] Condensed Statements of Income [Abstract] Lessee, Operating Lease, Liability, to be Paid, Year Three Lessee, Operating Lease, Liability, to be Paid, Year Three Stautory Matters [Abstract] Stautory Matters [Abstract] Stautory Matters [Abstract] Treasury Stock at Cost Treasury Stock [Member] Stockholders' equity, value Stockholders' equity, value Stockholders' Equity Attributable to Parent Dividend to common stockholders, value Dividends, Common Stock Line of Credit Facility [Line Items] Letters of Credit [Line Items] Line of Credit Facility [Line Items] Salvage and subrogation recoveries, value Salvage and Subrogation Recoveries, Value Statutory Accounting Practices [Line Items] Statutory Accounting Practices [Line Items] Other deferred tax assets Deferred Tax Assets, Other Commercial Mortgage Backed Securities [Member] Commercial Mortgage-Backed Securities [Member] Intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Vesting of restricted stock units, net of shares withheld to satisfy minimum tax withholding (Note 14), value Restricted Stock, Value, Shares Issued Net of Tax Withholdings Short-Duration Insurance Contract, Accident Year 2021 Short-Duration Insurance Contract, Accident Year 2021 [Member] Proceeds from sale of fixed maturity securities Proceeds from Sale of Debt Securities, Available-for-Sale Retained Earnings Retained Earnings [Member] Supplemental schedule of reinsurance premiums for insurance companies table SEC Schedule, 12-17, Insurance Companies, Reinsurance [Text Block] Lease, Cost Lease, Cost Common Stock Common Stock [Member] Premiums receivable (less CECL allowance of $12.8 at December 31, 2022 and $10.3 at December 31, 2021) Premiums Receivable, Net Number of Reportable Segments Number of Reportable Segments Lease, Cost [Table Text Block] Lease, Cost [Table Text Block] Revenue Recognition, Policy Revenue [Policy Text Block] Statement [Table] Statement [Table] Restricted Stock Units Vested but Unsettled [Member] Restricted Stock Units Vested but Unsettled [Member] Restricted stock units (RSUs) that were granted as part of a stock compensation plan that has been vested but unsettled. Finite-Lived intangible assets, amortization method Finite-Lived Intangible Assets, Amortization Method Statistical Measurement [Axis] Statistical Measurement [Axis] Acquisition of treasury stock (Note 13), shares Treasury Stock, Shares, Acquired Equity securities, FV-NI, realized gain Equity Securities, FV-NI, Realized Gain Leasehold improvements Leasehold Improvements [Member] Equity Components [Axis] Equity Components [Axis] Short-duration Insurance Contracts, Accident Year [Domain] Short-Duration Insurance Contracts, Accident Year [Domain] Business Combination, Consideration Transferred, Other Business Combination, Consideration Transferred, Other Statement [Line Items] Statement [Line Items] Equity in net income of subsidiaries Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Investment in subsidiaries Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Effects of Reinsurance [Line Items] Effects of Reinsurance [Line Items] Finite-Lived Intangible Assets, Gross Finite-Lived Intangible Assets, Gross Accident Year 2019 Short-Duration Insurance Contract, Accident Year 2019 [Member] Reinsurance [Abstract] Reinsurance [Abstract] Reinsurance [Abstract] Assumed premiums written Assumed Premiums Written Premiums Written, Net Premiums Written, Net [Abstract] Reinsurance Agreement [Line Items] Reinsurance Agreement [Line Items] Reinsurance Agreement [Line Items] LPT - loss expense as a percentange of losses paid, for management of LPT claims LPT Agreement percentange of loss expense to total losses LPT Agreement percentange of loss expense to total losses paid to the Company as compensation for management of LPT claims. Debt securities, available-for-sale, gross unrealized loss Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Stock Repurchased During Period, Value Stock Repurchased During Period, Value Reinsurance Recoverable, Allowance for Credit Loss Reinsurance Recoverable, Allowance for Credit Loss [Table Text Block] Accumulated Other Comprehensive Income, Net AOCI Attributable to Parent [Member] Federal Home Loan Bank Branch [Domain] Federal Home Loan Bank Branch [Domain] Accumulated Other Comprehensive Income, Net Comprehensive Income (Loss) Note [Text Block] Auditor Firm ID Auditor Firm ID Reclassification adjustment for realized AFS investment losses (gains) in net income, net of tax (benefit) expense of $(0.8), $0.9, and $0.9 for the years ended December 31, 2022, 2021, and 2020, respectively Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Premium Receivable, Allowance for Credit Loss Premium Receivable, Allowance for Credit Loss [Table Text Block] Contingent commission receivable–LPT Agreement Contingent Commission Receivable LPT Agreement The aggregate carrying amount, as of the balance sheet date, of contingent commission receivable related to the LPT Agreement, a retroactive 100% quota share reinsurance agreement. Document Transition Report Document Transition Report Local Phone Number Local Phone Number LPT reserve adjustment Adjustment to LPT Reserve, Income Tax Reconciliation Income Tax Rate Reconciliation, LPT Reserve Adjustment CIC Cerity Insurance Company [Member] Cerity Insurance Company [Member] [Domain] Debt Securities, Available-for-sale, Allowance for Credit Loss, Recovery Debt Securities, Available-for-Sale, Allowance for Credit Loss, Recovery Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Goodwill and other intangible asset impairment Goodwill and Intangible Asset Impairment LPT Agreement [Member] LPT Agreement [Member] LPT Agreement for claims incurred prior to July 1, 1995. Ending Twelve Months Prior [Line Items] Ending Twelve Months Prior [Line Items] Dividends in excess of net investment income 12 months prior to the declaration or distribution. Stock repurchased during period, shares Stock Repurchased During Period, Shares Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Dividends received deduction and tax-exempt interest Effective Income Tax Rate Reconciliation, Deduction, Dividends, Amount Property, and Equipment, Policy Property, Plant and Equipment, Policy [Policy Text Block] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Lessee, Operating Lease, Liability, to be Paid, Year Four Lessee, Operating Lease, Liability, to be Paid, Year Four Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Number of options or share units, granted Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Credit Loss [Abstract] Additional Paid-in Capital Additional Paid-in Capital [Member] Licensing Agreements [Member] Licensing Agreements [Member] Document Fiscal Period Focus Document Fiscal Period Focus Line of Credit Facility, Covenant Terms Line of Credit Facility, Covenant Terms Options exercised, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period Weighted average number of shares outstanding - diluted Weighted Average Number of Shares Outstanding, Diluted Percentage of surplus used to calculate the lesser of 10% of surplus or net investment income plus a 3-year carry forward with dividends payable limited to unassigned funds minus 25% of unrealized capital gains Percentage of Surplus3 The lesser of 10% of surplus or net income, not including realized capital gains, plus a 2-year carry forward. Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Amortization of deferred gain Amortization of Deferred Gain The amount of Deferred reinsurance gain–LPT Agreement, related to the LPT Agreement, a retroactive 100% quota share reinsurance agreement, that is amortized into and reflected in earnings during the period. AFS, change in unrealized gains (losses) on debt securities reflected in AOCI OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax net investment income, Percentage Of net investment income, Percentage Of net investment income, Percentage Of Percentage of surplus used to calculate 10% of surplus, with dividends payable limited to unassigned funds minus 25% of unrealized capital gains Percentage of Surplus2 Percentage of surplus used to calculate the following: 10% of surplus, with dividends payable limited to unassigned funds minus 25% of unrealized capital gains; Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Federal Home Loan Bank Branch [Axis] Federal Home Loan Bank Branch [Axis] Equity securities at fair value (cost $144.2 at December 31, 2022 and $212.6 at December 31, 2021 Equity Securities, FV-NI, Total Equity Securities, FV-NI Repayments on line of credit advances Purchase of Notes Payables Purchase of Notes Payables The cash outflow for financing activities for redemption of notes payable. Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Year three Short-Duration Insurance Contracts, Historical Claims Duration, Year Three LPT deferred gain amortization Effective Income Tax Reconciliation Lpt Agreement Effective Income Tax Reconciliation, LPT Agreement. ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Schedule of fair value of options vested and instrinsic value of outstanding and exercisable options table Schedule of Fair Value Of Options Vested And Instrinsic Value of Outstanding and Exercisable Options [Table Text Block] Schedule of Fair Value Of Options Vested And Instrinsic Value of Outstanding and Exercisable Options [Table Text Block] Payment period for assessment liability based on individual states regulations Loss Contingency, Discounted Amount of Insurance-related Assessment Liability, Payment Period Dividends paid, without approval of regulatory agency SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Subsidiaries and Equity Method Investees Instruments Carried at NAV [Abstract] Instruments Carried at NAV [Abstract] Instruments Carried at NAV [Abstract] Vesting of restricted stock units, net of shares withheld to satisfy minimum tax withholding (Note 14), shares Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Debt Securities, Available-for-sale, Allowance for Credit Loss, Period Increase (Decrease) Debt Securities, Available-for-Sale, Allowance for Credit Loss, Writeoff All Other States AllOtherStates [Member] AllOtherStates [Member] Options exercisable, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Basis of Presentation [Abstract] Basis of Presentation [Abstract] Basis of Presentation [Abstract] Investments, Net Realized Gains (Losses) and Change in Net Unrealized Gains (Losses) [Abstract] Investments, Net Realized Gains (Losses) and Change in Net Unrealized Gains (Losses) [Abstract] Investments, Net Realized Gains (Losses) and Change in Net Unrealized Gains (Losses) [Abstract] Commitments and Contingencies Disclosure Commitments and Contingencies Disclosure [Text Block] Common stock, shares issued (in shares) Stockholders' equity, shares Stockholders' equity, shares Common Stock, Shares, Issued Underwriting and general and administrative expenses Other Underwriting Expense Schedule of Capitalization, Long-term Debt [Line Items] Schedule of Capitalization, Long-Term Debt [Line Items] Equity securities table Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] EAC and EPIC Employers Assurance and Employers Preferred [Member] Employers Assurance Company (EAC) and Employers Preferred Insurance Company (EPIC) are both subsidiaries of the Parent. Both companies are domicled in the State of Florida. Net cash (used in) provided by investing activities Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Investments, Policy Investment, Policy [Policy Text Block] Total comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Accident Year 2020 Short-Duration Insurance Contract, Accident Year 2020 [Member] Letter of credit collateral amount Letter of Credit Collateral Amount Represents the amount of investment securities at fair value pledged as collateral for the Letter of Credit. Deferred policy acquisition cost Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table Text Block] Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table Text Block] Entity Current Reporting Status Entity Current Reporting Status SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Text Block] SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Text Block] Unrealized capital gains, net Deferred Tax Liabilities, Unrealized Gains on Trading Securities Finance Lease, Liability, to be Paid, Year One Finance Lease, Liability, to be Paid, Year One Repayments of Notes Payable Repayments of Notes Payable Repayments of Notes Payable Statutory federal tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Change Due to Estimated Reserves Ceded Under the LPT Agreement [Member] Change Due to Estimated Reserves Ceded Under the LPT Agreement [Member] Adjustment to the estimated reserves ceded under the LPT Agreement results in a cumulative adjustment to the Deferred Gain, which is also included in losses and LAE incurred in the consolidated statements of comprehensive income, such that the Deferred Gain reflects the balance that would have existed had the revised reserves been recognized at the inception of the LPT Agreement Asset impairment charges Operating Lease, Impairment Loss Percentage of Net Income Percentage of Net Income Percentage of Net Income Number of outstanding options or share units Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Finance Lease, Liability, to be Paid, Year Two Finance Lease, Liability, to be Paid, Year Two Components of Deferred Income Taxes, net Components of Deferred Tax Assets and Liabilities [Abstract] Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Stock Options Exercisable [Domain] Stock Options Exercisable [Domain] Stock options that were granted as part of a stock compensation plan that are exercisable. Operating Leases, Future Minimum Payments Due [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Furniture and equipment Office Equipment [Member] Title of Individual [Domain] Title of Individual [Domain] Accident Year 2018 Short-Duration Insurance Contracts, Accident Year 2018 [Member] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Accumulated other comprehensive (loss) income, net of tax Total accumulated other comprehensive income, net Accumulated Other Comprehensive Income (Loss), Net of Tax Line of Credit Facility, Fair Value of Amount Outstanding Line of Credit Facility, Fair Value of Amount Outstanding Restricted Cash and Cash Equivalents, Policy Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Income Taxes Paid, Net Income Taxes Paid, Net Entity Small Business Entity Small Business Measurement Basis [Axis] Measurement Basis [Axis] Cash dividends declared per common share and eligible plan awards Common Stock, Dividends, Per Share, Declared Revenues Revenues [Abstract] Investments, Continous Loss Position [Abstract] Investments, Continous Loss Position [Abstract] Investments, Continous Loss Position [Abstract] Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net Other assets, prepaid policy surcharges Loss Contingency Accrual, Insurance-related Assessment, Policy Surcharge Asset Unpaid Loss and LAE Reserves, Policy Unpaid Policy Claims and Claims Adjustment Expense, Policy [Policy Text Block] Significant Accounting Policies Significant Accounting Policies [Text Block] Net premiums earned Premiums Earned, Net Share-based compensation expense, deferred Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount ECIC Employers Compensation Insurance Company [Member] Employers Compensation Insurance Company is a subsidiary of the Parent. Premiums earned, net Premiums Earned, Net, Property and Casualty Accident years prior to 2013 Short-duration Insurance Contracts, Accident Years Prior to 10 years [Domain] Accident Years Prior to 10 years in which a covered event occurs under the terms of the short-duration insurance contract. Property, Plant and Equipment Disclosure Property, Plant and Equipment Disclosure [Text Block] Options outstanding, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Safe habor matching, 100% Safe Habor Matching, Maximum Maximum safe habor matching consists of 100% matching contribution on salary deferrals up to 3%. Property and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Consolidated Entities [Axis] Consolidated Entities [Axis] Gain on Sale of Investments Gain on Sale of Investments Payables and Accruals [Abstract] Capital Commitment [Abstract] Capital Commitment [Abstract] Capital Commitment [Abstract] Conversion of Stock, Amount Converted Conversion of Stock, Amount Converted Debt Instrument [Line Items] Debt Instrument [Line Items] Stock-based obligations (Note 14), shares Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Total gross realized losses Investments, Gross Realized Losses Total gross realized losses for all fixed maturity and equity securities. US Government Agencies Debt Securities [Member] US Government Agencies Debt Securities [Member] Operating lease liability Operating Lease, Liability Stock-based Compensation, Policy Share-Based Payment Arrangement [Policy Text Block] Finance Lease, Liability, Payment, Due Finance Lease, Liability, to be Paid Debt Securities, Available-for-sale, Allowance for Credit Loss, Period Increase (Decrease) Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease) Lessee, Finance Lease, Term of Contract Lessee, Finance Lease, Term of Contract Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Fixed maturity securities, amortized cost Debt securities, available-for-sale, amortized cost Debt Securities, Available-for-Sale, Amortized Cost Other expenses Other Expenses Other Expenses Proceeds from (Repayments of) Lines of Credit Proceeds from (Repayments of) Lines of Credit Other assets Increase (Decrease) in Other Operating Assets Total impairments, value Other than Temporary Impairment Losses, Investments Investments classified by contractual maturity date table Investments Classified by Contractual Maturity Date [Table Text Block] Auditor Location Auditor Location Entity Filer Category Entity Filer Category Stockholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Current federal tax expense (benefit) Current Federal Tax Expense (Benefit) UNITED STATES UNITED STATES Alternative Investment Alternative Investment Stock-based compensation expense Share-Based Payment Arrangement, Expense Non-cash transactions Noncash Investing and Financing Items [Abstract] Commitments and contingencies (Note $12) Commitments and Contingencies Security Exchange Name Security Exchange Name Weighted average exercise price, outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Deferred policy acquisition cost, amortization expense Deferred Policy Acquisition Costs, Amortization Expense Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Consolidated Statements of Income [Abstract] Consolidated Statements of Income [Abstract] Consolidated Statements of Income [Abstract] Premiums In Force Premiums In Force Premiums In Force Percentage of surplus used to calculate the lesser of 10% of surplus or net income, not including realized capital gains, plus a 2-year carry forward. Percentage of Surplus Percentage of surplus used to calculate the following: lesser of 10% of surplus or net income, not including realized capital gains, plus a 2-year carry forward Cash and Cash Equivalents [Member] Cash and Cash Equivalents [Member] Cover [Abstract] Cover [Abstract] Entity Voluntary Filers Entity Voluntary Filers Other assets Other Assets Finance Lease, Weighted Average Discount Rate, Percent Finance Lease, Weighted Average Discount Rate, Percent Cash Acquired from Acquisition Cash Acquired from Acquisition Segment Reporting [Abstract] Segment Reporting [Abstract] Losses and LAE, net of reinsurance, incurred in: Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract] Corporate Segment [Member] Corporate Segment [Member] Year two Short-Duration Insurance Contracts, Historical Claims Duration, Year Two Investments [Domain] Investments [Domain] Premium Receivable, Allowance for Credit Loss Premium Receivable, Allowance for Credit Loss Forecast [Member] Forecast [Member] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Total liabilities and stockholders' equity Total liabilities and stockholders’ equity Liabilities and Equity Current year Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Cash and cash equivalents at fair value Cash Investment income related to equity securities Investment Income, Dividend Excess of Loss [Abstract] Excess of Loss [Abstract] Excess of Loss [Abstract] Reinsurance transactions reflected in consolidated statements of comprehensive income SEC Schedule, 12-17, Insurance Companies, Reinsurance [Table] Total deferred tax assets Deferred Tax Assets, Gross Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] FHLB advances Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances Debt Securities, Available-for-sale, Realized Gain Debt Securities, Available-for-Sale, Realized Gain Lessee, Operating Lease, Liability, Undiscounted Excess Amount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Diluted Earnings Per Share, Diluted Performance share awards, ultimate payout Performance share awards, ultimate payout Performance share awards, ultimate payout of the PSUs awarded based on a percentage of the target award. Reinsurance transactions reflected in consolidated statements of comprehensive income SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] Net change in unsettled investment purchases and sales Net change in unsettled investment purchases and sales IncreaseDecreaseInUnsettledAccountsReceivablAndAccountsPayable The net change during the reporting period in accounts receivable on unsettled investment sales and accounts payable on unsettled investment purchases. Service vesting period for options awarded Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Equity Securities [Abstract] Equity Securities [Abstract] Equity Securities [Abstract] Lessee, Operating Lease, Liability, to be Paid, Year Two Lessee, Operating Lease, Liability, to be Paid, Year Two Due after ten years, fair value Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Schedule of Available-for-sale Securities [Table] Schedule of Available-for-Sale Securities [Table] Unrecognized tax benefits Unrecognized Tax Benefits Accounting Standards Update 2018-05 [Member] Accounting Standards Update 2018-05 [Member] Accounting Standards Update Number 2018-05, Income Taxes (Topic 740) Fair Value of Financial Instruments, Fair Value Measurements [Abstract] Fair Value of Financial Instruments, Fair Value Measurements [Abstract] Fair Value of Financial Instruments, Fair Value Measurements [Abstract] Reinsurance, Excess Retention, Amount Reinsured, Per Policy Reinsurance, Excess Retention, Amount Reinsured, Per Policy Share Repurchase Program [Axis] Share Repurchase Program [Axis] Payments to develop software Payments to Develop Software Corporate Debt Securities [Member] Corporate Debt Securities [Member] Line of Credit Facility, Commitment Fee Percentage Line of Credit Facility, Commitment Fee Percentage Investment expenses Investment Income, Investment Expense Employee contributions 50% match, percentage Employee Contributions 50% Match The Company will match 50% of employee contribution from 3% to 5%. Consolidated Balance Sheets [Abstract] Consolidated Balance Sheets [Abstract] Consolidated Balance Sheets [Abstract] Voluntary risk business Related to Voluntary Risk Business [Member] Related to Voluntary Risk Business Entity Address, Address Line One Entity Address, Address Line One Other Comprehensive Income (Loss), Tax Other Comprehensive Income (Loss), Tax Used to calculate ratio of written premium to surplus Used to Calculate Ratio of Written Premium to Surplus Used to calculate ratio of written premium to surplus. Dividends in excess of net investment income [Line Items] Dividends in excess of net investment income [Line Items] Dividends in excess of net investment income during the 36 months prior to the declaration or distribution. Ceded premiums written Ceded premiums written Ceded Premiums Written Investments, Amortized Cost and Estimated Fair Value [Abstract] Investments, Amortized Cost and Estimated Fair Value [Abstract] Investments, Amortized Cost and Estimated Fair Value [Abstract] Interest and financing expenses Interest Expense Investments: Debt Securities, Available-for-Sale [Abstract] Maximum dividends that may be paid without prior approval Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval Gross investment income Gross Investment Income, Operating Service Agreements [Member] Service Agreements [Member] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Deferred Tax Liabilities, Leasing Arrangements Deferred Tax Liabilities, Leasing Arrangements Deferred Tax Asset, Leasing Arrangements Deferred Tax Asset, Leasing Arrangements Deferred Tax Asset, Leasing Arrangements Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Premiums receivable Increase (Decrease) in Premiums Receivable Deferred Tax Liabilities, Gross Deferred Tax Liabilities, Gross Purchases of equity securities Purchase of equity securities Payments to Acquire Equity Securities, FV-NI Property and Equipment [Abstract] Property and Equipment [Abstract] Property and Equipment [Abstract] Property and equipment, gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Year eight Short-Duration Insurance Contracts, Historical Claims Duration, Year Eight Finance Lease, Interest Payment on Liability Finance Lease, Interest Payment on Liability Accrued investment income Accrued Investment Income Receivable Measurement Frequency [Axis] Measurement Frequency [Axis] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency Nature [Axis] Liabilities for the incurred but unpaid losses and LAE related to claims prior to July 1, 1995 Assumed Liability for Unpaid Claims and Claims Adjustment Expense Other equities Other Equities [Member] This item represents investments by the reporting entity in equity securities issued by any type of company in public utilities, banks, trusts, and insurance companies the investments in which are summarized elsewhere. Type of Adoption [Domain] Accounting Standards Update [Domain] Reinsurance Recoverable, Allowance for Credit Loss Reinsurance Recoverable, Allowance for Credit Loss Fair value of awards awarded on grant date Share-Based Compensation Arrangement by Share-Based Payment Award, Grants at Grant Date, Total Fair Value The total fair value of Share-based Award at grant date. Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Other Debt Obligations [Member] Other Debt Obligations [Member] Operating and capital leases schedule of future minimum lease payments table Operating and Capital leases [Table Text Block] Operating lease- Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. Capital lease - Tabular disclosure of future minimum lease payments as of the date of the latest balance sheet presented, in aggregate and for each of the five years succeeding fiscal years, with separate deductions from the total for the amount representing executor costs, including any profit thereon, included in the minimum lease payments and for the amount of the imputed interest necessary to reduce the net minimum lease payments to present value. Line of Credit Facility, Periodic Payment, Interest Line of Credit Facility, Periodic Payment, Interest Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table] Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value LPT collateral held in trust account LPT collateral held in trust account LPT collateral held in trust account Direct premiums, written Direct Premiums Written Expense computed at statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Proceeds from maturities and redemptions of fixed maturity securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Performance Share Awards [Abstract] Performance Share Awards [Abstract] Performance Share Awards [Abstract] EPIC Employers Preferred Insurance Company [Member] Employers Preferred Insurance Company is a subsidiary of the Parent. Finance Lease, Liability, Undiscounted Excess Amount Finance Lease, Liability, Undiscounted Excess Amount Estimated Fair Value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Total Available for sale Debt Securities and Short-term investments, Cost Total Available for sale Debt Securities and Short-term investments, Cost Amortized cost of Available for sale Debt Securities and Short-term investments Condensed Balance Sheet [Abstract] Condensed Balance Sheet [Abstract] Condensed Balance Sheet [Abstract] Reinsurance Agreement [Axis] Reinsurance Agreement [Axis] Reinsurance Agreement [Axis]