Short-term investments
Other Short-Term Investments
Bank loan participations:
Bank Loan Participations [Abstract]
Sales
Proceeds from Sale of Debt Securities, Available-for-Sale
Discontinued operations (in dollars per share)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share
Number of equity securities transferred
Number Of Equity Securities Transferred
Number Of Equity Securities Transferred
Total capacity
Line of Credit Facility, Maximum Borrowing Capacity
Change in operating assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
2017
Short-Duration Insurance Contracts, Accident Year 2017 [Member]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Convertible preferred stock, shares issued upon conversion
Convertible Preferred Stock, Shares Issued upon Conversion
Sales
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Award Type [Domain]
Award Type [Domain]
Investment, Name [Domain]
Investment, Name [Domain]
Impairment of intangible assets
Impairment Losses
Impairment of Intangible Assets (Excluding Goodwill)
Schedule of Summary of Available-for-Sale Investments
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
Beginning balance
Ending balance
Asset value
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Exercisable, end of year (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Carrying amount of Junior Subordinated Debt net of repurchases
Junior Subordinated Notes
2028
Lessee, Operating Lease, Liability, to be Paid, Year Five
Shareholders' Equity
Equity [Text Block]
Line of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Outstanding losses and loss adjustment expenses assumed from involuntary workers’ compensation pools
Outstanding Losses And Loss Adjustment Expenses Assumed From Involuntary Workers Compensation Pools
This element represents amount of outstanding losses and loss adjustment expenses assumed from involuntary workers compensation pools.
Change in net unearned premiums
Disposal Group, Including Discontinued Operation, (Increase) Decrease in Unearned Premiums, Net
Disposal Group, Including Discontinued Operation, (Increase) Decrease in Unearned Premiums, Net
Schedule of Junior Subordinated Debt
Schedule of Subordinated Borrowing [Table Text Block]
Vesting of RSUs (in shares)
Vesting of RSU awards (in shares)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures
Statutory Accounting Practices [Table]
Statutory Accounting Practices [Table]
Accumulated goodwill impairment losses
Goodwill, Impaired, Accumulated Impairment Loss
Contribution to subsidiary
Payments Of Contributions To Affiliates
Payments Of Contributions To Affiliates
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Stock purchase agreement, cash payable
Proceeds from Divestiture of Businesses
Dividends on common shares
Payments of Ordinary Dividends, Common Stock
Jrg Re
Jrg Re [Member]
Represents information about JRG Re.
Diluted (in dollars per share)
Earnings Per Share, Diluted
Unrealized gain (loss) on bank loan participations
Unrealized Gain (Loss) on Investments
Ceded written premiums
Disposal Group, Including Discontinued Operation, Ceded Premiums Written
Disposal Group, Including Discontinued Operation, Ceded Premiums Written
Intangible Assets, Net
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]
Unrealized losses due to credit related impairments
Bank Loan Participations, Unrealized Losses, Credit Related Impairments
Bank Loan Participations, Unrealized Losses, Credit Related Impairments
Bank Holding Company
Bank Holding Company [Member]
Represents information about Bank Holding Company.
Fronting and Programs
Fronting and Programs [Member]
Represents information of Fronting and Programs.
Line of Credit
Line of Credit [Member]
Preferred stock, dividend term
Preferred Stock, Dividend Term
Preferred Stock, Dividend Term
Payments for reinsurance
Payments for Reinsurance
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Trading Symbol
Trading Symbol
Amount of letters of credit issued
Letters of credit outstanding
Letters of Credit Outstanding, Amount
Granted (in dollars per share)
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Year 8
Short-Duration Insurance Contracts, Historical Claims Duration, Year Eight
Preferred stock, discount rate, percentage
Preferred Stock, Discount Rate, Percentage
Preferred Stock, Discount Rate, Percentage
Non-employee directors
Non-employee Directors [Member]
Non-employee Directors [Member]
Preferred stock, dividend payment rate, variable spread
Preferred Stock, Dividend Payment Rate, Variable Spread
Preferred Stock, Dividend Payment Rate, Variable Spread
Net unrealized (losses) gains, net of taxes
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax
Fixed maturity securities
Fixed maturity securities
Debt Securities [Member]
Thereafter
Finite-Lived Intangible Asset, Expected Amortization, after Year Five
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Indefinite-lived Intangible Assets, Major Class Name [Domain]
Indefinite-Lived Intangible Assets, Major Class Name [Domain]
Total intangible assets, gross
Intangible Assets, Gross (Excluding Goodwill)
Required collateral percentage
Required Collateral Percentage
Required Collateral Percentage
Energy
Energy [Member]
Name of underwriting division.
Total principal balance received
Proceeds from Sale and Maturity of Other Investments
Shareholders’ equity:
Shareholders’ equity:
Equity, Attributable to Parent [Abstract]
Short-duration Insurance Contracts, Historical Claims Duration [Table]
Short-Duration Insurance Contracts, Historical Claims Duration [Table]
Ceded premiums payable
Ceded Premiums Payable
Schedule of Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Related party transaction, amounts of transaction
Related Party Transaction, Amounts of Transaction
Schedule of Reconciliation of Securities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Ceded written premiums
Ceded
Ceded to Other Companies
Ceded Premiums Written
Cash Flows from Discontinued Operations
Net Cash Provided by (Used in) Discontinued Operations [Abstract]
Shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Bank loan participations, at fair value
Bank loan participations
Fair Value, Option, Loans Held as Assets, Aggregate Fair Value
Fair Value, Option, Loans Held as Assets, Aggregate Fair Value
Exercised (in dollars per share)
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Quoted Prices in Active Markets for Identical Assets Level 1
Fair Value, Inputs, Level 1 [Member]
Carrying Value
Reported Value Measurement [Member]
Fortitude Reinsurance
Fortitude Reinsurance [Member]
Fortitude Reinsurance
Schedule of Property and Equipment, Net
Property, Plant and Equipment [Table Text Block]
Equity Components [Axis]
Equity Components [Axis]
Underwriting and other issue expenses
Deferred Policy Acquisition Costs Underwriting And Other Issue Expenses
Represents deferred policy acquisition costs underwriting and other issue expenses.
Financial Instruments [Domain]
Financial Instruments [Domain]
Condensed Balance Sheet Statements, Captions [Line Items]
Condensed Balance Sheet Statements, Captions [Line Items]
Number of shares available for grant (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Investment Type [Axis]
Investment Type [Axis]
Short-term investments
Disposal Group, Including Discontinued Operation, Short-Term Investments
Disposal Group, Including Discontinued Operation, Short-Term Investments
Current year
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year
Purchases
Payment To Acquire Bank Loan Participations
Represents payment to acquire Bank loan participations.
Options granted (in shares)
Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Issue date
Debt Instrument, Issuance Date
Schedule of Gross Written Premiums by Segment and Underwriting Division
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]
Entity Small Business
Entity Small Business
Weighted-average common shares outstanding:
Weighted Average Number of Shares Outstanding, Basic [Abstract]
2027
Finite-Lived Intangible Asset, Expected Amortization, Year Four
Investments [Domain]
Investments [Domain]
Local Phone Number
Local Phone Number
Deferred reinsurance gain
Disposal Group, Including Discontinued Operation, Deferred Reinsurance Gain
Disposal Group, Including Discontinued Operation, Deferred Reinsurance Gain
Individual Risk Workers' Compensation
Individual Risk Workers Compensation [Member]
Represents information about individual risk workers compensation.
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Largest reinsurer three
Credit Risk Reinsurer Three [Member]
Represents information about Credit Risk Reinsurer three.
RSUs
Restricted Stock Units (RSUs) [Member]
Excess tax expense (benefits) on share based compensation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount
Trademarks
Trademarks [Member]
Retirement Benefits [Abstract]
Retirement Benefits [Abstract]
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member]
Acquired Intangible Assets [Line Items]
Acquired Intangible Assets [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.
Statutory Matters [Abstract]
Statutory Matters [Abstract]
Statutory Matters
Line of Credit Facility [Table]
Line of Credit Facility [Table]
Allowance for credit losses on reinsurance recoverables
Reinsurance Recoverables on Unpaid Losses, Allowance
Ceded Credit Risk, Reinsurer [Axis]
Reinsurer, Name [Axis]
Accrued investment income
Accrued Investment Income Receivable
Vesting of RSUs
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation
Cash and cash equivalents
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents
Supplementary Information Concerning Property Casualty Insurance Operations
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Text Block]
Statutory Matters
Statutory Matters [Text Block]
The entire disclosure represents information regarding insurance statutory matters.
Number of shares issued during period (in shares)
Number of common shares issued during period (in shares)
Sale of Stock, Number of Shares Issued in Transaction
After ten years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10
Variable Interest Entities
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
Total revenues
Segment revenues
Total revenues
Revenues
Other expenses
Disposal Group, Including Discontinued Operation, Other Expense
Cash equivalent collateral returned to trust
Cash Equivalent Collateral Returned to Trust
Cash Equivalent Collateral Returned to Trust
Federal income tax expense (benefit)
Federal Income Tax Expense (Benefit), Continuing Operations
Other expenses
Other expenses
Other expenses
Other Expenses
Award Type [Axis]
Award Type [Axis]
Number of securities excluded from the calculations of diluted earnings per share (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Number of awards granted (in shares)
Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Liability for catastrophe claims, losses
Liability For Catastrophe Claims, Losses
Liability For Catastrophe Claims, Losses
Underwriting profit (loss)
Underwriting profit
Underwriting Profit (Loss)
Represents the amount related to underwriting profit (loss) during the period.
Maturity date of Junior Subordinated Debt, unless accelerated earlier
Debt Instrument, Maturity Date
Jurisdiction [Axis]
Jurisdiction [Axis]
Residential mortgage-backed
Residential Mortgage Backed Fair Value
Represents fair value of residential mortgage backed.
Dividends on common shares
Dividends, Common Stock
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Total loss and loss adjustment expense payments
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid
ICFR Auditor Attestation Flag
ICFR Auditor Attestation Flag
Property and equipment, cost basis
Property, Plant and Equipment, Gross
Unaudited Selected Quarterly Financial Data
Quarterly Financial Information [Text Block]
Earned premiums:
Premiums Earned, Net [Abstract]
Summary of Cash Dividends Declared
Dividends Declared [Table Text Block]
Other Related Party Transactions
Related Party Transactions Disclosure [Text Block]
Less imputed interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Percentage of dividend withholding tax
Percentage Of Dividend Withholding Tax
Represents percentage of dividend withholding tax.
2021
Short-Duration Insurance Contract, Accident Year 2021 [Member]
James River Group Senior Debt
James River Group Senior Debt [Member]
James River Group Senior Debt [Member]
2026
Lessee, Operating Lease, Liability, to be Paid, Year Three
Unearned premiums
Unearned Premiums
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Total
Finite-Lived Intangible Assets, Net
Adopted and Prospective Accounting Standards
New Accounting Pronouncements, Policy [Policy Text Block]
Write down of JRG Re to fair value less cost to sell
Disposal Group, Including Discontinued Operation, Write Down
Disposal Group, Including Discontinued Operation, Write Down
Counterparty Name [Domain]
Counterparty Name [Domain]
Rate of interest
Investment Interest Rate
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Repayments and redemptions
Proceeds From Maturities And Repayments Of Other Invested Assets
Represents proceeds from maturities and repayments of other invested assets.
2025
Lessee, Operating Lease, Liability, to be Paid, Year Two
Per share price (in dollars per share)
Shares issued at a public offering price (in dollars per share)
Sale of Stock, Price Per Share
Private Placement
Private Placement [Member]
Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets [Roll Forward]
Bermuda
BERMUDA
Series A redeemable preferred shares, par value (in dollars per share)
Series A convertible preferred shares (in dollars per share)
Temporary Equity, Par or Stated Value Per Share
Security Exchange Name
Security Exchange Name
Ceded Credit Risk, Reinsurer [Domain]
Reinsurer, Name [Domain]
Share Based Compensation
Share-Based Payment Arrangement [Policy Text Block]
Investment Income [Table]
Investment Income [Table]
Accumulated other comprehensive loss
Accumulated other comprehensive (loss) income
Accumulated Other Comprehensive Income (Loss), Net of Tax
Options
Employee Stock Option [Member]
2019
Short-Duration Insurance Contract, Accident Year 2019 [Member]
Short-Term Investments
Investment, Policy [Policy Text Block]
Maximum
Maximum [Member]
Accrued compensation expenses
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation
Unrecognized share based compensation expense
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Document Type
Document Type
Total expenses
Benefits, Losses and Expenses
Net investment income
Disposal Group, Including Discontinued Operation, Net Investment Income
Disposal Group, Including Discontinued Operation, Net Investment Income
Discontinued operations (in dollars per share)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
Investment in variable interest entities
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount
Contingent Liabilities [Line Items]
Contingent Liabilities [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.
Small Business
Small Business [Member]
Name of underwriting division.
Number of agencies
Number of Agencies
Number of Agencies
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Schedule of Summary of Realized Gains and Losses
Realized Gain (Loss) on Investments [Table Text Block]
Largest reinsurer two
Credit Risk Reinsurer Two [Member]
Represents information about Credit Risk Reinsurer two.
Basis of Presentation and Principles of Consolidation
Basis of Accounting, Policy [Policy Text Block]
Purchases
Payments to Acquire Debt Securities, Available-for-Sale
Dividends on Series A preferred shares
Payments of Ordinary Dividends, Preferred Stock and Preference Stock
Business Acquisition [Axis]
Business Acquisition [Axis]
Funds held
Disposal Group, Including Discontinued Operation, Funds Held under Reinsurance Agreements, Liability
Disposal Group, Including Discontinued Operation, Funds Held under Reinsurance Agreements, Liability
Income tax expense recognized over next six years
Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Asset, Income Tax Expense
Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Asset, Income Tax Expense
Bank loan participations
Net (losses) gains in bank loan participations
Bank Loan Participations, Net Gain (Loss)
Bank Loan Participations, Net Gain (Loss)
Variable Rate [Axis]
Variable Rate [Axis]
Forfeited (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period
Net investment income
Net investment income
Net Investment Income
Title of 12(b) Security
Title of 12(b) Security
LPT Trust And Loss Fund Trust
LPT Trust And Loss Fund Trust [Member]
LPT Trust And Loss Fund Trust
Held-for-Sale and Discontinued Operations
Discontinued Operations, Policy [Policy Text Block]
Commercial Auto Business
Commercial Auto Business [Member]
Commercial Auto Business
Franklin Holdings II (Bermuda) Capital Trust I
Franklin Holdings Ii Bermuda Capital Trust I [Member]
Represents information about Franklin Holdings II Bermuda Capital Trust I.
Related Party [Domain]
Related Party, Type [Domain]
Identifiable intangibles not subject to amortization
Indefinite-Lived Intangible Assets (Excluding Goodwill)
Associated Trust Agreement [Domain]
Associated Trust Agreement [Domain]
Associated Trust Agreement [Domain]
Operating Segments
Operating Segments [Member]
Provision to return and amended tax returns
Effective Income Tax Rate Reconciliation, Provision to Return And Amended Tax Returns, Amount
Effective Income Tax Rate Reconciliation, Provision to Return And Amended Tax Returns, Amount
Unvested, beginning of year (in dollars per share)
Unvested, end of year (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Net Written Premiums
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Written
Allied Health
Allied Health [Member]
Name of underwriting division.
Bank loan participations, at fair value
Disposal Group, Including Discontinued Operation, Fair Value, Option, Loans Held as Assets, Aggregate Fair Value
Disposal Group, Including Discontinued Operation, Fair Value, Option, Loans Held as Assets, Aggregate Fair Value
Stock Options, Restricted Stock Units and Convertible Preferred Stock
Stock Options, Restricted Stock Units And Convertible Preferred Stock [Member]
Stock options and share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met.
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Abstract]
U.S. income taxes
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax
Share-based Payment Arrangement [Abstract]
Share-Based Payment Arrangement [Abstract]
Entity Tax Identification Number
Entity Tax Identification Number
Net Earned Premiums
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue
2022
Short-Duration Insurance Contract, Accident Year 2022 [Member]
Dividends on Series A preferred shares
Dividends, Preferred Stock
Losses and loss adjustment expenses
Disposal Group, Including Discontinued Operation, Losses And Loss Adjustment Expenses
Disposal Group, Including Discontinued Operation, Losses And Loss Adjustment Expenses
Number of insurance companies
Number Of Insurance Companies
This element represents number of insurance companies owned by the entity.
Cash dividend declared (in dollars per share)
Common Stock, Dividend Per Share, Cash Payments, Threshold
Common Stock, Dividend Per Share, Cash Payments, Threshold
Other operating expenses
Disposal Group, Including Discontinued Operation, Operating Expense
Other underwriting expenses of the insurance segments
Other Underwriting Expense
Percentage of then-applicable conversion price threshold
Preferred Stock, Convertible, Mandatory Conversion, Percentage
Preferred Stock, Convertible, Mandatory Conversion, Percentage
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Entity Interactive Data Current
Entity Interactive Data Current
Payout for achievement, maximum
Share-Based Compensation Arrangement by Share-Based Payment Award, Payout For Achievement, Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award, Payout For Achievement, Maximum
Debt Securities, Available-for-Sale [Table]
Debt Securities, Available-for-Sale [Table]
Changes in operating assets and liabilities
Increase (Decrease) in Operating Capital
Commissions
Deferred Policy Acquisition Cost, Capitalization
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Deduct: Change in deferred reinsurance gain - retroactive reinsurance
Increase (Decrease) In Deferred Reinsurance Gain
Increase (Decrease) In Deferred Reinsurance Gain
Deferred policy acquisition costs
Disposal Group, Including Discontinued Operation, Deferred Policy Acquisition Costs
Disposal Group, Including Discontinued Operation, Deferred Policy Acquisition Costs
Year 5
Short-Duration Insurance Contracts, Historical Claims Duration, Year Five
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Reinsurance recoverables
Reinsurance Recoverables, Gross
Direct Written Premiums
Revenue Recognition, Premiums Earned, Policy [Policy Text Block]
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Written premiums:
Premiums Written, Net [Abstract]
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Deferred Policy Acquisition Costs Disclosures [Abstract]
Deferred Policy Acquisition Costs Disclosures [Abstract]
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Short-Duration Insurance Contracts, Historical Claims Duration [Line Items]
Goodwill
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Bank loan participations
Bank loan participations
Bank Loan Obligations [Member]
Equity securities, at fair value (cost: 2023 – $114,107; 2022 – $113,180)
Equity securities
Equity Securities, FV-NI
Schedule of Deferred Tax Assets (Liabilities) at the Current Prevailing Corporate Income Tax Rate
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Assets held-for-sale (Note 2 - discontinued operations)
Assets held for sale
Disposal Group, Including Discontinued Operation, Assets
Counterparty Name [Axis]
Counterparty Name [Axis]
Schedule of Related Party Transactions, by Related Party [Table]
Schedule of Related Party Transactions, by Related Party [Table]
Excluding Commercial Auto
Excluding Commercial Auto [Member]
Excluding Commercial Auto [Member]
2024
Finite-Lived Intangible Asset, Expected Amortization, Year One
Fixed maturity securities, available-for-sale:
Debt Securities [Abstract]
Common stock, shares outstanding (in shares)
Outstanding common shares, beginning of year (in shares)
Outstanding common shares, ending of year (in shares)
Common Stock, Shares, Outstanding
Income tax expense (benefit) on continuing operations:
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Other invested assets
Carrying Value
Other Investments
Premiums receivable and agents’ balances, net
Premiums and Other Receivables, Net
Reserve for Losses and Loss Adjustment Expenses
Liability Reserve Estimate, Policy [Policy Text Block]
Other Income and Expenses [Abstract]
Schedule of Components of Comprehensive Income (Loss)
Comprehensive Income (Loss) [Table Text Block]
Auditor Location
Auditor Location
Other operating expenses
Total
Other operating expenses
Other Cost and Expense, Operating
Schedule of Rollforward of Changes in Common Shares Issued and Outstanding
Schedule of Common Stock Outstanding Roll Forward [Table Text Block]
Trust common stock
Trust Common Stock
Represents trust common stock.
Year 2
Short-Duration Insurance Contracts, Historical Claims Duration, Year Two
Subordinated Borrowings [Abstract]
Subordinated Borrowings [Abstract]
Deferred interest payment period (in years)
Debt Instrument, Deferred Interest Option, Maximum Term
Debt Instrument, Deferred Interest Option, Maximum Term
Discontinued operations (Note 2):
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent [Abstract]
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Sale of Stock [Axis]
Sale of Stock [Axis]
Net earned premiums
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Earned Premium
Rasier And Aleka
Rasier And Aleka [Member]
Rasier And Aleka
Net cash provided by (used in) investing activities
Net cash provided by (used in) investing activities
Net Cash Provided by (Used in) Investing Activities
Equity securities
Equity Securities, FV-NI, Current
Income taxes payable
Taxes Payable
Other Operating Expenses
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense
Number of issuers
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions
Net income (loss) from continuing operations
Net income (loss) from continuing operations
Net income (loss) from continuing operations
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Liabilities held-for-sale (Note 2 - discontinued operations)
Liabilities held for sale
Disposal Group, Including Discontinued Operation, Liabilities
Sales
Proceeds From Bank Loan Participations
Represents cash inflow from sales of bank loan participations.
Catastrophic Event [Axis]
Catastrophic Event [Axis]
Credit Facility [Axis]
Credit Facility [Axis]
Total liabilities
Liabilities
Current
Current Income Tax Expense (Benefit)
Equity Awards
Shareholders' Equity and Share-Based Payments [Text Block]
Fixed maturity securities, fair value
Total fair value
Debt Securities, Available-for-Sale, Unrealized Loss Position
Measurement Frequency [Domain]
Measurement Frequency [Domain]
Common shares reserved for future issuance (in shares)
Common Stock, Capital Shares Reserved for Future Issuance
Accrued expenses
Disposal Group, Including Discontinued Operation, Accrued Liabilities
Property and Equipment, Net
Property, Plant and Equipment Disclosure [Text Block]
Title of Individual [Axis]
Title of Individual [Axis]
Segment assets
Assets Excluding Assets Held For Sale
Assets Excluding Assets Held For Sale
James River Group, Inc.
James River Group Inc [Member]
Represents information regarding James River Group, Inc.
Assumed
Assumed Premiums Earned
Summary of Investments - Other than Investments in Related Parties
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Text Block]
2014
Short-Duration Insurance Contracts, Accident Year 2014 [Member]
Schedule of Acquired Indefinite-Lived Intangible Assets
Schedule of Acquired Indefinite-Lived Intangible Assets by Major Class [Table Text Block]
Property, Plant and Equipment, Type [Domain]
Long-Lived Tangible Asset [Domain]
Percentage of prepaid reinsurance premiums ceded for 3 largest reinsurers
Prepaid Reinsurance Premiums Ceded Percentage Of Total Balance
Represents prepaid reinsurance premiums ceded as percentage of total balance.
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Sports and Entertainment
Sports And Entertainment [Member]
Name of underwriting division.
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Fixed Maturity and Equity Securities
Marketable Securities, Policy [Policy Text Block]
Minority interest in partnership
Affiliated Entity [Member]
Fixed maturity securities, less than 12 months, fair value
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months
Short-duration Insurance Contracts, Accident Year [Domain]
Short-Duration Insurance Contracts, Accident Year [Domain]
Investment Income
Investment Income, Net
Preferred stock
Preferred Stock [Member]
Gross written premiums
Disposal Group, Including Discontinued Operation, Gross Written Premiums
Disposal Group, Including Discontinued Operation, Gross Written Premiums
Equity securities
Equity Securities [Member]
Indemnity Trust
Indemnity Trust [Member]
Indemnity Trust
Supplemental information
Supplemental information
Supplemental Cash Flow Information [Abstract]
Excise taxes paid
Federal Excise Taxes Paid, Third Party Assumed Written Premiums
Represents excise taxes paid on written premiums assumed from third-party insurers with respect to risks located in the U.S.
Maturities
Proceeds From Maturities From Bank Loan Participations
Represents cash inflow from maturities of bank loan participations.
Rasier
Rasier [Member]
Rasier
Other liabilities
Other liabilities
Other Liabilities
Percentage of dividend distribution tax
Percentage Of Dividend Distribution Tax
Represents percentage of dividend distribution tax.
Ceded Credit Risk [Line Items]
Ceded Credit Risk [Line Items]
Earnings (Loss) Per Share
Earnings Per Share, Policy [Policy Text Block]
Goodwill and Intangible Assets
Goodwill and Intangible Assets Disclosure [Text Block]
Preferred stock, convertible, conversion price
Preferred Stock, Convertible, Conversion Price
Issuance of Series A preferred shares (Note 12)
Issuance of Series A preferred shares
Proceeds from Issuance of Preferred Stock and Preference Stock
Junior Subordinated Debt
Subordinated Borrowings Disclosure [Text Block]
Total invested assets
Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Granted (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
2028
Finite-Lived Intangible Asset, Expected Amortization, Year Five
U.S. Treasury securities and obligations guaranteed by the U.S. government
US Treasury and Government [Member]
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]
Contingent Liabilities [Table]
Contingent Liabilities [Table]
Discloses information about contingent liabilities.
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Schedule of Future Estimated Amortization
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Class of Stock [Axis]
Class of Stock [Axis]
Convertible preferred stock, shares reserved for future issuance (in shares)
Preferred Stock, Convertible, Shares Issuable
Standard & Poor's, Below BBB- Rating
Standard & Poor's, Below BBB- Rating [Member]
Standard & Poor's, Below BBB- Rating [Member]
Amortization of policy acquisition costs
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Amortization of Deferred Policy Acquisition Cost
Provision for depreciation and amortization
Depreciation, Depletion and Amortization
Amount of credit loss expense that is reinsured
Amount Of Credit Loss Expense Reinsured
Amount Of Credit Loss Expense Reinsured
Furniture and equipment
Furniture and Fixtures [Member]
Reserve for losses and loss adjustment expenses
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Loss Reserves
2023
Short-Duration Insurance Contract, Accident Year 2023 [Member]
Allowance for Credit Losses on Premiums Receivable and Agents' Balances
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Actual statutory capital and surplus
Statutory capital and surplus
Statutory Accounting Practices, Statutory Capital and Surplus, Balance
Fixed maturity securities, gross realized gains
Debt Securities, Available-for-Sale, Realized Gain
Consolidation Items [Axis]
Consolidation Items [Axis]
Maturities, calls and paydowns
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Goodwill impairment
Goodwill, Impairment Loss
Deferred Policy Acquisition Costs
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost
Deferred tax assets, valuation allowance
Deferred Tax Assets, Valuation Allowance
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
2018
Short-Duration Insurance Contracts, Accident Year 2018 [Member]
Subsegments [Axis]
Subsegments [Axis]
Fee income
Fee Income
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
2014 Non-Employee Director Incentive Plan
Non Employee Director Incentive Plan 2014 [Member]
Represents information regarding 2014 Non Employee Director Incentive Plan.
Reinsurance recoverable on unpaid and paid losses, net
Disposal Group, Including Discontinued Operation, Reinsurance Recoverable for Unpaid Claims and Claims Adjustments
Disposal Group, Including Discontinued Operation, Reinsurance Recoverable for Unpaid Claims and Claims Adjustments
Net income (loss) per common share:
Earnings Per Share Reconciliation [Abstract]
Property, Plant and Equipment, Type [Axis]
Long-Lived Tangible Asset [Axis]
Other invested assets
Other Security Investments [Member]
Changes in fair values of bank loan participations
Bank Loan Participations, Changes in Fair Value
Bank Loan Participations, Changes in Fair Value
Entity Emerging Growth Company
Entity Emerging Growth Company
Transition provision expense
Tax Cuts and Jobs Act, Change in Tax Rate, Income Tax Expense (Benefit)
Tax Cuts and Jobs Act, Change in Tax Rate, Income Tax Expense (Benefit)
Fair Value
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]
Intangible assets, net
Net Carrying Value
Net Carrying Value
Intangible Assets, Net (Excluding Goodwill)
Total deferred tax assets
Deferred Tax Assets, Gross
Deferred reinsurance gain
Deferred Reinsurance Gain
Deferred Reinsurance Gain
Parent Company
Parent Company [Member]
Dividend distributions to intermediate holding company
Dividend Distributions To Intermediate Holding Company
Represents dividend distributions to intermediate holding company.
2024
Lessee, Operating Lease, Liability, to be Paid, Year One
Increase to deferred tax asset for additional discount
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense1
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense1
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
James River Capital Trust IV
James River Capital Trust Iv [Member]
Represents information about James River Capital Trust IV.
Maximum amount of dividends available without regulatory approval
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval
Common Shares
Common stock
Common Stock [Member]
Accounting Policies [Table]
Accounting Policies [Table]
Schedule detailing information related to accounting policies.
Paid losses and loss adjustment expenses, net of reinsurance
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Paid Claim and Claim Adjustment Expense
Maximum amount of dividends and return of capital available
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments
SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]
SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Broker two
Broker Two [Member]
Name of party.
SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]
SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]
Net realized and unrealized losses (gains) on investments
Gain (Loss) On Investments Including Discontinued Operations
Gain (Loss) On Investments Including Discontinued Operations
Losses and loss adjustment expenses
Policyholder Benefits and Claims Incurred, Net, Property, Casualty and Liability
Tax-exempt investment income
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount
LPT Trust
LPT Trust [Member]
LPT Trust
Retroactive reinsurance benefit recognized
Retroactive Reinsurance Benefit Recognized
Retroactive Reinsurance Benefit Recognized
Invested assets:
Investments [Abstract]
Minimum
Minimum [Member]
Property and equipment, net
Property, Plant and Equipment, Net
Condensed Balance Sheet Statement [Table]
Condensed Balance Sheet Statement [Table]
Distributions from equity method investments
Cash distributions from LLCs
Proceeds from Equity Method Investment, Distribution
Equity in other comprehensive earnings (losses) of subsidiaries
Other Comprehensive Income (Loss), Net of Tax
Disposal Group Classification [Axis]
Disposal Group Classification [Axis]
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Assets
Assets
Assets [Abstract]
Total incurred losses and loss and adjustment expenses
Incurred Losses and Loss Adj Expenses
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims
After ten years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10
Assumed
Policyholder Benefits and Claims Incurred, Assumed
Payroll taxes withheld and remitted on net settlement of RSUs
Payroll taxes withheld and remitted on net settlement of RSUs
Payment, Tax Withholding, Share-Based Payment Arrangement
Deferred tax assets:
Deferred Tax Assets, Net [Abstract]
Valuation and Qualifying Accounts
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Other
Deferred Tax Assets, Other
Liabilities:
Liabilities:
Liabilities [Abstract]
Net cash (used in) provided by financing activities
Net Cash Provided by (Used in) Financing Activities
Deferred tax assets, net
Deferred Income Tax Assets, Net
Revenues:
Disposal Group, Including Discontinued Operation, Revenue [Abstract]
Disposal Group, Including Discontinued Operation, Revenue
Commitments and Contingent Liabilities
Commitments and Contingencies Disclosure [Text Block]
Continuing operations (in dollars per share)
Income (Loss) from Continuing Operations, Per Diluted Share
Reinsurance, amount remaining
Reinsurance, Aggregate Coverage Limit, Amount Remaining
Reinsurance, Aggregate Coverage Limit, Amount Remaining
Deferred tax liability
Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Liability, Income Tax Benefit
Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Liability, Income Tax Benefit
Percentage of outstanding shares acquired
Business Acquisition, Percentage of Voting Interests Acquired
Retained (Deficit) Earnings
Retained Earnings [Member]
Basic (in dollars per share)
Earnings Per Share, Basic
Other liabilities
Disposal Group, Including Discontinued Operation, Other Liabilities
Accounting Policies [Abstract]
Accounting Policies [Abstract]
Sale of Stock [Domain]
Sale of Stock [Domain]
Year 7
Short-Duration Insurance Contracts, Historical Claims Duration, Year Seven
Net deferred tax assets
Deferred Tax Assets, Net
Total intrinsic value of options exercised
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Residential mortgage-backed
Residential Mortgage Backed Amortized Cost
Represents Amortized Cost of Residential mortgage-backed securities.
Losses and loss adjustment expenses:
Policyholder Benefits and Claims Incurred, Net [Abstract]
Amortization of Policy Acquisition Costs
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost
Assumed
Assumed from Other Companies
Assumed Premiums Written
Aggregate coverage limit
Reinsurance, Aggregate Coverage Limit
Reinsurance, Aggregate Coverage Limit
Other Invested Assets
Other Invested Assets [Policy Text Block]
Represents disclosure of accounting policy for other invested assets composition and accounting.
Investing activities
Investing activities
Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]
Document Transition Report
Document Transition Report
Unsecured
Unsecured Debt [Member]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Restricted cash equivalents
Restricted cash equivalents at beginning of year
Restricted cash equivalents at end of year
Restricted Cash Equivalents
Deduct: Loss and loss adjustment expense payments net of reinsurance:
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract]
Commitment to invest in notes receivable
Commitment To Invest In Notes Receivable
Commitment To Invest In Notes Receivable
Entity Public Float
Entity Public Float
Schedule of Major Categories of the Company' s Net Investment Income
Investment Income [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]
Equity securities, gross realized gains
Equity Securities, FV-NI, Realized Gain
Fixed maturity securities, at fair value
Disposal Group, Including Discontinued Operation, Debt Securities, Available-For-Sale
Disposal Group, Including Discontinued Operation, Debt Securities, Available-For-Sale
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Abstract]
Entity Address, Country
Entity Address, Country
Reinsurance recoverable on unpaid losses, net
Deduct: Loss reserves ceded in loss portfolio transfer
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments
Loss on held-for sale classification of discontinued operations
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal
One year or less
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One
Junior Subordinated Debt
Junior Subordinated Debt [Member]
Number of underlying projects sold
Number of Underlying Projects Sold
Number of Underlying Projects Sold
Common Shares – 2023 and 2022: $0.0002 par value; 200,000,000 shares authorized; 37,641,563 and 37,470,237 shares issued and outstanding, respectively
Common Stock, Value, Outstanding
IBNR net of Rasier LPT
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Net of Rasier LPT Claims, Amount
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Net of Rasier LPT Claims, Amount
Restricted Cash Equivalents
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]
Bank loan participations, gross realized losses
Bank Loan Participations, Gross Realized Loss
Represents the gross realized losses on bank loan participations.
Claims outstanding
Cumulative Number of Reported Claims
Short-Duration Insurance Contract, Cumulative Number of Reported Claims
Notes Receivable Two
Notes Receivable Two [Member]
Notes Receivable Two
Credit loss expense
Accounts Receivable, Credit Loss Expense (Reversal)
Forfeited (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Deferred
Deferred U.S. federal income tax benefit
Deferred Income Tax Expense (Benefit)
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Excess and Surplus Lines
Excess and Surplus Lines
Excess And Surplus Lines [Member]
Represents information regarding excess and surplus lines segment.
Schedule of Statutory Accounting
Statutory Accounting Practices Disclosure [Table Text Block]
Gross written premiums
Total gross written premiums
Premiums Written, Gross
Environmental
Environmental [Member]
Name of underwriting division.
Percentage of available for sale securities
Percentage Of Available For Sale Debt Securities
Represents percentage of available for sale debt securities.
Forfeited (in dollars per share)
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Document Financial Statement Error Correction
Document Financial Statement Error Correction [Flag]
Percentage of excise tax on reinsurance premiums paid
Excise Tax On Reinsurance Premiums Paid
Represents excise tax on reinsurance premiums paid.
Loss Fund Trust
Loss Fund Trust [Member]
Loss Fund Trust
Forfeited (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Allowance for credit losses
Accounts Receivable, Allowance for Credit Loss
Return of capital
Proceeds from Equity Method Investment, Distribution, Return of Capital
Operating Lease, Liability, Statement of Financial Position [Extensible List]
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Fair value of shares used in calculation of intrinsic values (in dollars per share)
Share Price
Outstanding commitments to invest
Commitment to Investment In Limited Partnership
Represents commitment to investment in a limited partnership.
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Other assets
Other assets
Other Assets
Other income
Other Nonoperating Income
Lapsed (in dollars per share)
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Lapsed in Period, Weighted Average Exercise Price
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Lapsed in Period, Weighted Average Exercise Price
Unearned premiums
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Unearned Premium
Changes in fair values of equity securities
Equity Securities, FV-NI, Unrealized Gain (Loss)
Condensed Cash Flow Statements, Captions [Line Items]
Condensed Cash Flow Statements, Captions [Line Items]
Documents Incorporated by Reference
Documents Incorporated by Reference [Text Block]
Document Period End Date
Document Period End Date
Direct
Direct Amount
Direct Premiums Written
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Commercial mortgage and asset-backed
Commercial Mortgage And Asset Backed Fair Value
Represents fair value of commercial mortgage and asset backed.
Accounting Policies
Basis of Presentation and Significant Accounting Policies [Text Block]
Total income tax expense (benefit)
Income Tax Expense (Benefit)
Series A redeemable preferred shares, authorized (in shares)
Temporary Equity, Shares Authorized
Public Stock Offering
Public Stock Offering [Member]
Public Stock Offering
Allowance for credit losses written off
Accounts Receivable, Allowance for Credit Loss, Writeoff
Fair Value Measurements
Fair Value Disclosures [Text Block]
Management Liability
Management Liability [Member]
Management Liability
Agency two
Agency Two [Member]
Agency Two [Member]
Lender Name [Axis]
Lender Name [Axis]
Fixed maturity securities, 12 months or more, gross unrealized losses
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Reclassification adjustment for investment (losses) gains realized in net income
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale [Line Items]
Interest paid by discontinued operations
Interest Paid, Discontinued Operations
Weighted average remaining lease term
Operating Lease, Weighted Average Remaining Lease Term
Number of trading days immediately preceding Mandatory Conversion
Preferred Stock, Dividend, Trading Days
Preferred Stock, Dividend, Trading Days
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Net written premiums
Disposal Group, Including Discontinued Operation, Premiums Written, Net
Disposal Group, Including Discontinued Operation, Premiums Written, Net
Year 6
Short-Duration Insurance Contracts, Historical Claims Duration, Year Six
Fixed maturity securities, less than 12 months, gross unrealized losses
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Cash and cash equivalents
Cash and cash equivalents
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Cash and Cash Equivalents, at Carrying Value
Liability for Claims and Claims Adjustment Expense [Abstract]
Liability for Claims and Claims Adjustment Expense [Abstract]
Credit Facility [Domain]
Credit Facility [Domain]
Less reclassification adjustment:
OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax [Abstract]
Allowance for Credit Losses on Reinsurance Balances
SEC Schedule, 12-09, Allowance, Reinsurance Recoverable [Member]
Interest rate, per annum
Debt Instrument, Basis Spread on Variable Rate
Property and equipment, estimated useful lives (in years)
Property, Plant and Equipment, Useful Life
Proceeds from sale of equity method investments
Proceeds from Sale of Equity Method Investments
Common stock, covenant, threshold, cash paid (in dollars per share)
Common Stock, Covenant Threshold, Per Share
Common Stock, Covenant Threshold, Per Share
Dividends received deduction
Effective Income Tax Rate Reconciliation, Deduction, Dividends, Amount
Accrued expenses
Accrued expenses
Accrued Liabilities
Year 9
Short-Duration Insurance Contracts, Historical Claims Duration, Year Nine
Value of awards granted
Shares Granted, Value, Share-Based Payment Arrangement, before Forfeiture
Other operating expenses of the Corporate and Other segment
Other operating expenses of the Corporate and Other segment
Other Operating Expenses Of Corporate And Other Segment
Represents Other operating expenses of the Corporate and Other segment.
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Document Annual Report
Document Annual Report
Sales
Proceeds from Sale of Equity Securities, FV-NI
Allowance for credit losses
Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Accounts Receivable, Allowance for Credit Loss
Income from equity method investments
Investment Income
Equity in net (loss) income of subsidiaries
Income (Loss) from Equity Method Investments
Cover [Abstract]
Cover [Abstract]
Direct
Direct Premiums Earned
James River Capital Trust II
James River Capital Trust II [Member]
Represents information about James River Capital Trust II.
Subsequent Events
Subsequent Events [Text Block]
United States
United States
UNITED STATES
Recurring basis
Fair Value, Recurring
Fair Value, Recurring [Member]
Excess §162(m) compensation
Effective Income Tax Rate Reconciliation, Excess 162(m) Compensation, Amount
Effective Income Tax Rate Reconciliation, Excess 162(m) Compensation, Amount
Due to subsidiaries
Other Liabilities, Noncurrent
Number of equity securities held
Number Of Equity Securities Held
Number Of Equity Securities Held
Investments on deposit with state insurance departments
Fair Value of Investments on Deposits with State Insurance Departments
Fair Value of Investments on Deposits with State Insurance Departments
Total lease payments
Lessee, Operating Lease, Liability, to be Paid
Short-term investments
Short-Term Investments
Employee Benefits
Compensation and Employee Benefit Plans [Text Block]
Purchases
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Bank Loan Participations
Fair Value, Option, Loans Held as Assets, Aggregate Fair Value, Policy [Policy Text Block]
Fair Value, Option, Loans Held as Assets, Aggregate Fair Value, Policy
Total expenses
Operating Expenses
Segment Information
Segment Reporting Disclosure [Text Block]
Change in cash, cash equivalents, and restricted cash equivalents
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Third-party Reinsureds
Third-party Reinsureds [Member]
Third-party Reinsureds
Secured
Secured Debt [Member]
Change in restricted cash equivalents
Increase (Decrease) In Restricted Cash Equivalents
Increase (Decrease) In Restricted Cash Equivalents
Equity Component [Domain]
Equity Component [Domain]
Provision for depreciation and amortization
Depreciation, Depletion, Amortization And Accretion Expense
Depreciation, Depletion, Amortization And Accretion Expense
Other
Deferred Tax Liabilities, Other
Entity Current Reporting Status
Entity Current Reporting Status
Medical Professionals
Medical Professionals [Member]
Name of underwriting division.
Crediting rate on funds withheld
Crediting Rate On Funds Withheld
Crediting Rate On Funds Withheld
Payout for achievement, threshold
Share-Based Compensation Arrangement by Share-Based Payment Award, Payout For Achievement, Threshold
Share-Based Compensation Arrangement by Share-Based Payment Award, Payout For Achievement, Threshold
Reinsurance Disclosures [Abstract]
Reinsurance Disclosures [Abstract]
Funds held
Funds Held under Reinsurance Agreements, Liability
Cash, cash equivalents, restricted cash equivalents, and short-term investments
Cash and Cash Equivalents [Member]
Reserve for losses and loss adjustment expenses
Disposal Group, Including Discontinued Operation, Reserve For Losses And Loss Adjustment Expenses
Disposal Group, Including Discontinued Operation, Reserve For Losses And Loss Adjustment Expenses
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Total deferred tax liabilities
Deferred Tax Liabilities, Gross
Catastrophic Event [Domain]
Catastrophic Event [Domain]
Amortization of discount
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Amortization of Discount
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Amortization of Discount
Segments [Axis]
Segments [Axis]
Fair Value
Estimate of Fair Value Measurement [Member]
Property and Equipment, Net
Property, Plant and Equipment, Policy [Policy Text Block]
Other comprehensive income (loss):
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Payable to insurance companies
Increase (Decrease) in Reinsurance Payables
Scenario [Domain]
Scenario [Domain]
Minimum statutory solvency margin
Minimum required statutory capital and surplus
Statutory Accounting Practices, Statutory Capital and Surplus Required
Senior debt
Amount outstanding on line of credit
Long-Term Line of Credit
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Short-term investments and other, gross realized gains
Short Term Investments And Other Gross Realized Gains
Represents the gross profit realized on the sale of short term investment and other.
Variable Rate [Domain]
Variable Rate [Domain]
Entity Voluntary Filers
Entity Voluntary Filers
Interest expense
Disposal Group, Including Discontinued Operation, Interest Expense
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Number of brokers
Number of Brokers
Number of Brokers
Short-term investments and other, gross realized losses
Short Term Investments And Other Gross Realized Losses
Represents the gross loss realized on the sale of short term investment and other.
Unvested, beginning of year (in shares)
Unvested, end of year (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Unearned premiums
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Unearned Premiums Reserve
Senior Debt
Debt Disclosure [Text Block]
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Proceeds received from cash portion of pre-closing dividend
Proceeds For Selling Agreement, Pre Close Dividend
Proceeds For Selling Agreement, Pre Close Dividend
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
Other income
Disposal Group, Including Discontinued Operation, Other Income
BBB- or better
Standard & Poor's, BBB- or Better Rating [Member]
Standard & Poor's, BBB- or Better Rating
Revolving Credit Facility
Revolving Credit Facility [Member]
Commercial Auto
Commercial Auto [Member]
Commercial Auto [Member]
Impairment of intangible assets
Impairment of Intangible Assets, Finite-Lived
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Discontinued Operations and Disposal Groups [Abstract]
Transfers out of Level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3
Number of underwriting divisions
Number Of Underwriting Divisions
Represents number of underwriting divisions.
Investment, Name [Axis]
Investment, Name [Axis]
Corporate
Corporate Debt Securities [Member]
Commitments and contingent liabilities
Commitments and contingent liabilities
Commitments and Contingencies
Impairment of intangible assets
Impairment of intangible assets
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)
Specialty Admitted Insurance
Specialty Admitted
Specialty Admitted Insurance [Member]
Represents information regarding specialty admitted insurance.
Issuances of common shares - public offering
Proceeds from Issuance of Common Stock
Geographical [Axis]
Geographical [Axis]
Amount at which shown on Balance Sheet
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Amount
Reserve for losses and loss adjustment expenses gross of reinsurance recoverables on unpaid losses and loss adjustment expenses at end of period
Gross reserve for losses and loss adjustment expenses
Liability for Claims and Claims Adjustment Expense
Income Taxes
Income Tax Disclosure [Text Block]
2016
Short-Duration Insurance Contracts, Accident Year 2016 [Member]
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Table]
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Table]
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Table]
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Table]
Leases
Lessee, Leases [Policy Text Block]
Net cash provided by investing activities of discontinued operations
Cash Provided by (Used in) Investing Activities, Discontinued Operations
Unearned premiums
Increase (Decrease) in Unearned Premiums
Short-duration Insurance Contracts, Accident Year [Axis]
Short-Duration Insurance Contracts, Accident Year [Axis]
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Weighted- Average Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Fair Value, Recurring and Nonrecurring [Table]
Fair Value, Recurring and Nonrecurring [Table]
Equity method investments
Deferred Tax Liabilities, Investment in Noncontrolled Affiliates
Quarterly Financial Data [Abstract]
Quarterly Financial Data [Abstract]
Property, Plant and Equipment [Table]
Property, Plant and Equipment [Table]
Payables to reinsurers
Reinsurance Payable
Cumulative amounts ceded under loss portfolio transfer
Cumulative Amounts Ceded Under Loss Portfolio Transfer
Cumulative Amounts Ceded Under Loss Portfolio Transfer
Increase in number of common shares authorized for issuance (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Increase in Number of Shares Authorized
Share-based Compensation Arrangement by Share-based Payment Award, Increase in Number of Shares Authorized
Significant Unobservable Inputs Level 3
Fair Value, Inputs, Level 3 [Member]
Condensed Cash Flow Statement [Table]
Condensed Cash Flow Statement [Table]
Claims Development [Line Items]
Claims Development [Line Items]
Beginning of year (in shares)
End of year (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]
After five years through ten years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Exercise of stock options
Stock Issued During Period, Value, Stock Options Exercised
James River Capital Trust I
James River Capital Trust I [Member]
Represents information about James River Capital Trust I.
Unearned Premiums
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium
Add: Reinsurance recoverables on unpaid losses and loss adjustment expenses at end of period
Reinsurance recoverables on unpaid losses (gross of $660,000 allowance for credit losses on reinsurance recoverables)
Reinsurance Recoverables on Unpaid Losses, Gross
Net (loss) income
Net (loss) income
Net Income (Loss)
Receivables greater than 90 days past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Equity Securities:
Equity Securities, FV-NI [Abstract]
Junior Subordinated Debt [Axis]
Junior Subordinated Debt [Axis]
Represents information by junior subordinated debt types.
After one year through five years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Leases
Lessee, Operating Leases [Text Block]
Stock purchase agreement, purchase price
Selling Agreement, Estimated Transaction Value
Selling Agreement, Estimated Transaction Value
Indemnity Trust And Loss Fund Trust
Indemnity Trust And Loss Fund Trust [Member]
Indemnity Trust And Loss Fund Trust
Deferred policy acquisition costs
Balance at beginning of period
Balance at end of period
Deferred Policy Acquisition Cost
Year 3
Short-Duration Insurance Contracts, Historical Claims Duration, Year Three
Liabilities and shareholders’ equity
Liabilities and shareholders’ equity
Liabilities and Equity [Abstract]
Short-duration Insurance Contracts, Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net
Cumulative paid losses and loss adjustment expenses, net of reinsurance
Short-Duration Insurance Contracts, Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net
Lapsed (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Lapsed in Period
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Lapsed in Period
SCHEDULE II - Condensed Financial Information of Registrant
Condensed Financial Information of Parent Company Only Disclosure [Text Block]
Gross Unrealized Losses
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Exercise of stock options (in shares)
Exercised (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
U.S. income (loss) before Federal income taxes
Income (Loss) from Continuing Operations before Income Taxes, Domestic
Premiums Receivable and Agents' Balances, Net
Premiums Receivable, Basis of Accounting, Policy [Policy Text Block]
Vesting period (in years)
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Schedule of Gross Carrying Amounts for Indefinite-Lived Intangible Assets
Schedule of Indefinite-Lived Intangible Assets [Table Text Block]
Pre close dividend
Selling Agreement, Pre Close Dividend
Selling Agreement, Pre Close Dividend
Private Debt
Private Debt [Member]
Private Debt
Current total capacity
Line of Credit Facility, Current Borrowing Capacity
Deferred policy acquisition costs
Deferred Policy Acquisition Cost1
Represents costs related to successful acquisition of insurance that are deferred.
Goodwill
Segment goodwill
Goodwill
Total revenues
Disposal Group, Including Discontinued Operation, Revenue
Loss before equity in net income of subsidiaries
Income (Loss) From Continuing Operations Before Equity In Net Earnings Of Subsidiaries
Income (Loss) From Continuing Operations Before Equity In Net Earnings Of Subsidiaries
Measurement Basis [Axis]
Measurement Basis [Axis]
Prior years
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years
Other Comprehensive Income (Loss)
Comprehensive Income (Loss) Note [Text Block]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Forecast
Forecast [Member]
Dividend declared per common share (in dollars per share)
Dividend declared per share (in dollars per share)
Common Stock, Dividends, Per Share, Declared
Unrealized gains (losses) arising during the period, net of U.S. income taxes
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Net Investment Income [Line Items]
Net Investment Income [Line Items]
Add: Incurred losses and loss adjustment expenses net of reinsurance:
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract]
Schedule of Summary of Available-for-Sale Investments by Contractual Maturity
Investments Classified by Contractual Maturity Date [Table Text Block]
Issuance costs
Payments of Stock Issuance Costs
Broker one
Broker One [Member]
Name of party.
Payment of debt issuance costs
Payments of Debt Issuance Costs
Assets
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Subsidiary note repayments
Repayments of Related Party Debt
Percentage of dividend withholding tax for distributions
Percentage Of Dividend Withholding Tax For Distributions
Represents the percentage of dividend withholding tax for distributions.
Assets deposited for securing letters of credit
Assets Deposited For Securing Letters Of Credit
Represents amount of assets deposited for securing letters of credit.
Summary of Lease Maturities
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Abstract]
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Abstract]
Dilutive potential common shares (in shares)
Weighted Average Number of Shares Outstanding, Diluted, Adjustment
Senior debt repayments
Repayments of senior debt
Repayments of Senior Debt
Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Schedule of Carrying Value and Fair Value
Fair Value, by Balance Sheet Grouping [Table Text Block]
Product and Service [Domain]
Product and Service [Domain]
Commercial mortgage and asset-backed
Commercial Mortgage-Backed Securities [Member]
Series A redeemable preferred shares – 2023 and 2022: $0.00125 par value; 20,000,000 shares authorized; 150,000 shares issued and outstanding
Series A redeemable preferred shares
Temporary Equity, Carrying Amount, Attributable to Parent
2013 Facility
2013 Facility [Member]
2013 Facility
Reserve for losses and loss adjustment expenses net of reinsurance recoverables at beginning of period
Reserve for losses and loss adjustment expenses net of reinsurance recoverables at end of period
Net reserve for losses and loss adjustment expenses
Liability for Unpaid Claims and Claims Adjustment Expense, Net
Premiums receivable and agents’ balances, net
Disposal Group, Including Discontinued Operation, Premiums And Other Receivables, Net
Disposal Group, Including Discontinued Operation, Premiums And Other Receivables, Net
Plan Name [Domain]
Plan Name [Domain]
Interest expense
Interest expense
Interest expense
Interest Expense
Maximum number of shares available for issuance (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Weighted-average remaining contractual life of options outstanding (in years)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Loan Participations and Assignments
Loan Participations and Assignments [Member]
Bank Holding Companies
Bank Holding Companies [Member]
Name of the investment category.
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note [Abstract]
Estimates and Assumptions
Use of Estimates, Policy [Policy Text Block]
Equity securities:
Equity Securities, FV-NI and without Readily Determinable Fair Value [Abstract]
Long-term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Schedule of Other Operating Expenses
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]
Fixed maturity securities:
Debt Securities, Available-for-Sale [Abstract]
Entity File Number
Entity File Number
Aleka
Aleka [Member]
Aleka
Thereafter
Lessee, Operating Lease, Liability, to be Paid, after Year Five
Excess Casualty
Excess Casualty [Member]
Name of underwriting division.
Payment of federal excise taxes
Federal Excise Taxes Paid, Intercompany Reinsurance
Federal Excise Taxes Paid, Intercompany Reinsurance
Schedule Of Acquired Intangible Assets [Table]
Schedule Of Acquired Intangible Assets [Table]
Represents the tabular information related to intangible assets acquired in the acquisition.
Auditor Firm ID
Auditor Firm ID
Amortization of intangible assets
Amortization
Amortization of intangible assets
Amortization of Intangible Assets
Entity Shell Company
Entity Shell Company
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Temporary Equity [Line Items]
Temporary Equity [Line Items]
Schedule of Reserve for Losses and Loss Adjustment Expenses
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table Text Block]
Dividends on Series A preferred shares
Less: Dividends on Series A preferred shares
Temporary Equity, Dividends, Adjustment
Various LLCs
Various LLCs [Member]
Various LLCs
Cash, cash equivalents, and restricted cash equivalents at beginning of year
Cash, cash equivalents, and restricted cash equivalents at end of year
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
Asset Class [Axis]
Asset Class [Axis]
Equity securities, gross realized losses
Equity Securities, FV-NI, Realized Loss
Cost or Amortized Cost
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Cost
Operating costs under lease
Operating Lease, Cost
Weighted average common shares outstanding:
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Impairment of Long-Lived Assets
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Premiums receivable and agents’ balances
Increase (Decrease) in Premiums Receivable
Fixed maturity securities, 12 months or more, fair value
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer
Common stock, shares issued (in shares)
Issued common shares, beginning of year (in shares)
Issued common shares, end of year (in shares)
Common Stock, Shares, Issued
Schedule of Summary of RSU Activity
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Vested (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Schedule of Available-for-Sale Gross Unrealized Gains or Losses
Unrealized Gain (Loss) on Investments [Table Text Block]
Reserve for Losses and Loss Adjustment Expenses
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense
Fixed maturity securities, gross unrealized losses
Gross unrealized losses
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
Loss on fixed maturity securities
Debt Securities, Available-for-Sale, Gain (Loss)
Sale of stock, consideration received on transaction
Sale of Stock, Consideration Received on Transaction
Available-for-sale securities, change in gross unrealized (losses) gains
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax
Maximum matching employer contribution
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Balance at Beginning of Period
Balance at End of Period
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount
Weighted-average period of unrecognized share based compensation expense
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Total comprehensive loss
Comprehensive (loss) income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Manufacturers and Contractors
Manufacturers And Contractors [Member]
Name of underwriting division.
Margin above SOFR, percentage rate
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate
External Credit Rating, Standard & Poor's [Domain]
External Credit Rating, Standard & Poor's [Domain]
Accrued investment income
Disposal Group, Including Discontinued Operation, Accrued Investment Income Receivable
Disposal Group, Including Discontinued Operation, Accrued Investment Income Receivable
Entity Address, Address Line One
Entity Address, Address Line One
Entity Address, Address Line Two
Entity Address, Address Line Two
Entity Address, Address Line Three
Entity Address, Address Line Three
Liabilities
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Subsequent Event [Table]
Subsequent Event [Table]
Weighted- Average Exercise Price
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Statutory Accounting Practices [Line Items]
Statutory Accounting Practices [Line Items]
Subsequent Event
Subsequent Event [Member]
Net operating loss carryforwards
Operating Loss Carryforwards
Schedule of Gross Carrying Amounts and Accumulated Amortization for Finite-Lived Intangible Assets
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Secured Overnight Financing Rate (SOFR)
Secured Overnight Financing Rate (SOFR) [Member]
Secured Overnight Financing Rate (SOFR)
Excess tax benefits from equity incentive plan transactions
Excess Tax Benefits from Equity Incentive Plan Transactions, Operating Activities
Excess Tax Benefits from Equity Incentive Plan Transactions, Operating Activities
Income Statement [Abstract]
Income Statement [Abstract]
Issuance of common shares (in shares)
Stock Issued During Period, Shares, New Issues
Other assets
Disposal Group, Including Discontinued Operation, Other Assets
Restricted stock unit dividend equivalents
Restricted Stock Unit Dividend Equivalents
Represents amount of dividend equivalent of RSU's.
Income taxes receivable
Income Taxes Receivable
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]
Schedule of Other Invested Assets
Other Invested Asset [Table Text Block]
Tabular disclosure of other invested assets consisting of private debt and equity investments.
Federal income tax expense (benefit) at applicable statutory rates
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Prior years - retroactive reinsurance
Losses and loss adjustment expenses - retroactive reinsurance
Prior years - retroactive reinsurance
Prior Year Claims and Claims Adjustment Expense, Retroactive Reinsurance
Prior Year Claims and Claims Adjustment Expense, Retroactive Reinsurance
Schedule of Reconciliation of Beginning and Ending Reserve Balances for Losses and Loss Adjustment Expenses
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]
Diluted
Earnings Per Share, Diluted [Abstract]
Reinsurance
Reinsurance [Text Block]
Investment in subsidiaries
Equity Method Investments
Loss from discontinued operations
Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic
Letters of credit facility, amount
Letter Of Credit Facility Amount
Represents amount of letter of credit facility.
Other invested assets
Other Investments [Member]
Discontinued Operations
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Financial Instrument [Axis]
Financial Instrument [Axis]
Deferred Policy Acquisition Costs
Deferred Policy Acquisition Costs [Text Block]
Life Sciences
Life Sciences [Member]
Name of underwriting division.
Dividend limitations percentage of statutory surplus
Dividend Limitations Percentage Of Statutory Surplus
Represents dividend limitations percentage of statutory surplus.
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Total outstanding losses and loss adjustment expenses, net of reinsurance
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net
Segments [Domain]
Segments [Domain]
Casualty Reinsurance
Casualty Reinsurance [Member]
Represents information regarding casualty reinsurance.
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Gross written premiums percentage
Gross Written Premiums Percentage
Represents gross written premiums percentage.
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Junior Subordinated Debt [Domain]
Junior Subordinated Debt [Domain]
Represents categorization of information by junior subordinated debt.
Number of notes issued
Number Of Notes Issued
Number Of Notes Issued
Consolidation Items [Domain]
Consolidation Items [Domain]
Payout for achievement, target
Share-Based Compensation Arrangement by Share-Based Payment Award, Payout For Achievement, Target
Share-Based Compensation Arrangement by Share-Based Payment Award, Payout For Achievement, Target
Retained deficit
Retained deficit
Retained Earnings (Accumulated Deficit)
Transfers in to Level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3
Principal amount of senior debt
Principal amount of Junior Subordinated Debt
Debt Instrument, Face Amount
Change in net unearned premiums
(Increase) Decrease in Unearned Premiums, Net
Amount to settle litigation
Amount To Settle Litigation
Amount To Settle Litigation
Short-duration Insurance Contracts, Claims Development [Table]
Short-Duration Insurance Contracts, Claims Development [Table]
Leases [Abstract]
Leases [Abstract]
Prior years - excluding retroactive reinsurance
Development on prior year loss adverse (favorable) reserves
Prior Year Claims and Claims Adjustment Expense
Deferred Policy Acquisition Costs
Deferred Policy Acquisition Costs, Policy [Policy Text Block]
Professional Liability
Professional Liability [Member]
Name of underwriting division.
2020
Short-Duration Insurance Contract, Accident Year 2020 [Member]
Direct
Policyholder Benefits and Claims Incurred, Direct
Largest reinsurer one
Credit Risk Reinsurer One [Member]
Represents information about credit risk reinsurer one.
Residential mortgage-backed
Residential Mortgage-Backed Securities [Member]
Number of credit facilities
Number Of Letter Credit Facilities
Number Of Letter Credit Facilities
Continuing operations (in dollars per share)
Income (Loss) from Continuing Operations, Per Basic Share
Maturities and calls
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale
Net written premiums
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Premium Written
Disposal Group Name [Domain]
Disposal Group Name [Domain]
Basic
Earnings Per Share, Basic [Abstract]
Combined ECR
Combined Enhanced Capital Requirement
Combined Enhanced Capital Requirement
Due from subsidiaries
Other Receivables
Audit Information [Abstract]
Audit Information [Abstract]
Schedule of Incurred But Not Reported Liabilities and Claims Frequency
Schedule Of Incurred But Not Reported Liabilities And Claims Frequency [Table Text Block]
Represents information of incurred but not reported Liabilities and claims frequency.
Asset Class [Domain]
Asset Class [Domain]
U.S. income taxes
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Class of Stock [Domain]
Class of Stock [Domain]
Total invested assets
Disposal Group, Including Discontinued Operation, Total Invested Assets
Disposal Group, Including Discontinued Operation, Total Invested Assets
Net (loss) income available to common shareholders
Net (loss) income available to common shareholders
Net Income (Loss) Available to Common Stockholders, Basic
Shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Discontinued Operations, Held-for-Sale
Discontinued Operations, Held-for-Sale [Member]
2015
Short-Duration Insurance Contracts, Accident Year 2015 [Member]
Schedule of unaudited quarterly results of operations
Quarterly Financial Information [Table Text Block]
Contractual life of option (in years)
Share Based Arrangement by Share Based Award Option Contractual Life
Share Based Arrangement by Share Based Award Option Contractual Life
Lease liabilities
Total operating lease liabilities
Operating Lease, Liability
Securities receivable or payable, net
Payments for (Proceeds from) Unsettled Investments, Net
Payments for (Proceeds from) Unsettled Investments, Net
Available-for-sale fixed maturity securities and equity securities
Securities (Assets) [Member]
Hurricane
Hurricane [Member]
Unrealized gains (losses) arising during the period, before U.S. income taxes
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
Additions Amounts Charged to Expense
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense
Expense associated with Savings Plans
Defined Contribution Plan, Cost
Income tax expense recognized per year
Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Asset, Income Tax Expense, Per Year
Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Asset, Income Tax Expense, Per Year
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Number of shares to be received per PRSU (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Contingent Right, Number Of Shares To Be Received
Share-Based Compensation Arrangement by Share-Based Payment Award, Contingent Right, Number Of Shares To Be Received
Disposal Groups, Including Discontinued Operations [Table]
Disposal Groups, Including Discontinued Operations [Table]
Plan Name [Axis]
Plan Name [Axis]
Debt Disclosure [Abstract]
Debt Disclosure [Abstract]
Number of trading days
Preferred Stock, Convertible, Number Of Trading Days
Preferred Stock, Convertible, Number Of Trading Days
U.S. tax benefit on share based compensation expense
Share-Based Payment Arrangement, Expense, Tax Benefit
Number of reportable segments
Number of Reportable Segments
Net income (loss) per common share:
Earnings Per Share [Abstract]
Percentage of Amount Assumed to Net
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net
Year 1
Short-Duration Insurance Contracts, Historical Claims Duration, Year One
Amortization of policy acquisition costs
Amortization Of Policy Acquisition Costs
Represents amortization of policy acquisition costs.
Class A common shares
Common Stock, Value, Issued
Temporary Equity, by Class of Stock [Table]
Temporary Equity, by Class of Stock [Table]
Debt redemption percentage
Debt Instrument, Redemption Price, Percentage
After one year through five years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Total expenses
Disposal Group, Including Discontinued Operation, Total Expense
Disposal Group, Including Discontinued Operation, Total Expense
Cash provided by (used in) operating activities excluding reduction in collateral funds
Net Cash Provided by (Used in) Operating Activities Excluding Change in Collateral Funds
Net Cash Provided by (Used in) Operating Activities Excluding Change in Collateral Funds
Schedule of Incurred and Cumulative Paid Losses and Loss Adjustment Expenses, Net of Reinsurance
Short-Duration Insurance Contracts, Claims Development [Table Text Block]
Entity Filer Category
Entity Filer Category
Net earned premiums
Disposal Group, Including Discontinued Operation, Premiums Earned, Net
Disposal Group, Including Discontinued Operation, Premiums Earned, Net
All outstanding losses and loss adjustment expenses, net of reinsurance
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net, Not Separately Presented
Statement [Table]
Statement [Table]
Subsegments [Domain]
Subsegments [Domain]
Current Fiscal Year End Date
Current Fiscal Year End Date
Unpaid principal balance
Fair Value, Option, Loans Held as Assets, Aggregate Unpaid Principal Balance
Fair Value, Option, Loans Held as Assets, Aggregate Unpaid Principal Balance
Schedule of Reconciliation of the Difference Between Federal Income Tax Provision (Benefit) and Expected Tax Provision (Benefit)
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Commitment to lend
Commitment To Lend
Represents amount commitment to lend.
2017 Facility
2017 Facility [Member]
2017 Facility
Reserve for future tax contingencies
Unrecognized Tax Benefits
Principal amount of Trust Preferred Securities
Face Value Of Trust Preferred Securities
Represents face value of trust preferred securities.
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
PRSU
PRSU [Member]
PRSU
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information Disclosure [Abstract]
Junior subordinated debt
Junior subordinated debt
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust
Share based compensation
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost
Deductions Amounts Written Off or Disposals
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction
Prepaid reinsurance premiums
Prepaid reinsurance premiums ceded
Prepaid Reinsurance Premiums
Total gains or losses (realized/unrealized) - Included in other comprehensive income
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)
Purchases
Payments to Acquire Other Investments
Other income
Other income
Other Income
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]
Corporate, Non-Segment
Corporate, Non-Segment [Member]
Accident years prior to 2020
Short-Duration Insurance Contract, Accident Years Prior to 2020 [Member]
Short-Duration Insurance Contract, Accident Years Prior to 2020
Net written premiums
Premiums Written, Net
Other
Increase (Decrease) in Other Operating Assets and Liabilities, Net
James River Capital Trust III
James River Capital Trust III [Member]
Represents information about James River Capital Trust III.
Net (loss) income available to common shareholders
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic
Underwriting profit of operating segments
Total underwriting profit (loss) of operating segments
Underwriting Profit Loss Of Operating Segments
This element represents amount of underwriting Profit (loss) of operating segments.
Statement of Financial Position [Abstract]
Statement of Financial Position [Abstract]
Estimated loss on sale
Gain (Loss) on Disposition of Business
Equity securities, at fair value
Disposal Group, Including Discontinued Operation, Equity Securities, FV-NI
Disposal Group, Including Discontinued Operation, Equity Securities, FV-NI
Total shareholders’ equity
Balances
Balances
Equity, Attributable to Parent
Net
Policyholder Benefits and Claims Incurred, Net
U.S. state income tax expense
State and Local Income Tax Expense (Benefit), Continuing Operations
Liquidation preference (in dollars per share)
Temporary Equity, Liquidation Preference Per Share
Percentage of reinsurance recoverables on unpaid losses for 3 largest reinsurers
Reinsurance Recoverables On Unpaid Losses Percentage Of Total Balance
Represents reinsurance recoverables on unpaid losses percentage of total balance.
Net earned premiums
Net earned premiums
Premiums Earned, Net
Deferred policy acquisition costs
Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Subsequent Events [Abstract]
Subsequent Events [Abstract]
General Casualty
General Casualty [Member]
Name of underwriting division.
Total amount deposited in trust accounts
Asset, Held-in-Trust
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Reserve for Losses and Loss Adjustment Expenses
Liability For Claims And Claims Adjustment Expense [Text Block]
The entire disclosure for the liability for claims and claims adjustment expense.
State and municipal
US States and Political Subdivisions Debt Securities [Member]
Short-term investments, net
Payments for (Proceeds from) Short-Term Investments
Chief Operating Officer
Chief Operating Officer [Member]
Net investment income
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Net Investment Income
Significant Other Observable Inputs Level 2
Fair Value, Inputs, Level 2 [Member]
Temporary Equity [Abstract]
Current year
Current year
Current Year Claims and Claims Adjustment Expense
Credit Rating, Standard & Poor's [Axis]
Credit Rating, Standard & Poor's [Axis]
Deferred policy acquisition costs
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Deferred Policy Acquisition Cost
Purchases
Payments to Acquire Equity Securities, FV-NI
Electronic data processing hardware and software
Electronic Data Processing Hardware And Software [Member]
Represents information about electronic data processing hardware and software.
Disposal Group Classification [Domain]
Disposal Group Classification [Domain]
Condensed Income Statement [Table]
Condensed Income Statement [Table]
Cash equivalent collateral trust arrangement
Cash Equivalent Collateral Held In Trust Arrangement
Cash Equivalent Collateral Held In Trust Arrangement
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Broker relationships
Broker Relationships [Member]
Represents information related to broker relationships.
Document Fiscal Period Focus
Document Fiscal Period Focus
Prepaid reinsurance premiums
Disposal Group, Including Discontinued Operation, Prepaid Reinsurance Premiums
Disposal Group, Including Discontinued Operation, Prepaid Reinsurance Premiums
Cash dividend declared (in dollars per share)
Dividends Payable, Amount Per Share
Intangible assets, useful life (in years)
Life (Years)
Finite-Lived Intangible Asset, Useful Life
Ceded
Policyholder Benefits and Claims Incurred, Ceded
2027
Lessee, Operating Lease, Liability, to be Paid, Year Four
Net cash (used in) provided by discontinued operations
Net Cash Provided by (Used in) Discontinued Operations
Beginning of year (in dollars per share)
End of year (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Operating lease costs
Operating Lease, Expense
Loss Portfolio Transfer
Loss Portfolio Transfer [Member]
Loss Portfolio Transfer
Share based compensation expense
Share based compensation expense
Share-Based Payment Arrangement, Noncash Expense
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments [Abstract]
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments [Abstract]
Incurred losses and loss adjustment expenses, net of reinsurance
Short-Duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net
Net change
Deferred Policy Acquisition Costs, Period Increase (Decrease)
City Area Code
City Area Code
Product and Service [Axis]
Product and Service [Axis]
Financial Asset, Period Past Due [Domain]
Financial Asset, Aging [Domain]
Associated Trust Agreement [Axis]
Associated Trust Agreement [Axis]
Associated Trust Agreement
Condensed Income Statements, Captions [Line Items]
Condensed Income Statements, Captions [Line Items]
Ownership percentage
Equity Method Investment, Ownership Percentage
Document Fiscal Year Focus
Document Fiscal Year Focus
Geographical [Domain]
Geographical [Domain]
Dividend Restrictions
Dividend Payment Restrictions [Text Block]
Amount owed by buyer
Selling Agreement, Consideration Receivable In Event Of Certain Stock Purchase Agreement Conditions Met
Selling Agreement, Consideration Receivable In Event Of Certain Stock Purchase Agreement Conditions Met
Schedule of Summary of Option Activity
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Schedule of Acquired Finite-Lived Intangible Assets
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Total Amount
Dividends, Common Stock, Cash
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Abstract]
Fixed maturity securities:
Available-for-Sale Securities, Debt Maturities [Abstract]
Financing activities
Financing activities
Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Net realized and unrealized (losses) gains on investments
Disposal Group, Including Discontinued Operation, Gain (Loss) On Investments
Disposal Group, Including Discontinued Operation, Gain (Loss) On Investments
U.S. federal income taxes paid (refunded), net
Income Taxes Paid, Net
Convertible preferred stock, minimum term for conversion
Preferred Stock, Convertible, Term
Preferred Stock, Convertible, Term
Schedule of Assets Measured at Fair Value on a Recurring Basis
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Schedule of Summary of Share Based Compensation Amount of Expense and Related Tax Benefit
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Schedule of Underwriting Profit (Loss) of Operating Segments by Individual Segment and Reconciliation to Consolidated Income (Loss) from Continuing Operations Before Taxes
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
Total liabilities, Series A redeemable preferred shares, and shareholders’ equity
Liabilities and Equity
Fixed maturity securities, available-for-sale, at amortized cost
Cost or Amortized Cost
Debt Securities, Available-for-Sale, Amortized Cost
Right-of-use assets
Operating Lease, Right-of-Use Asset
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table]
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Reinsurance balances
Increase (Decrease) in Reinsurance Recoverable
Investment expense
Investment Income, Investment Expense
Entity Address, City or Town
Entity Address, City or Town
Short-term investments and other
Short Term Investments And Other Realized Gains (Losses)
Short Term Investments And Other Realized Gains (Losses)
Schedule of Summary of Company's Segment Results
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Accident years 2019 and prior
Short-Duration Insurance Contract, Accident Years 2019 and Prior [Member]
Short-Duration Insurance Contract, Accident Years 2019 and Prior
Losses and Loss Adjustment Expenses
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses
Net Investment Income
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income
Equity in undistributed earnings of subsidiaries
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Expenses:
Disposal Group, Including Discontinued Operation, Expenses [Abstract]
Disposal Group, Including Discontinued Operation, Expenses
Fixed maturity securities, available-for-sale, at fair value (amortized cost: 2023 – $1,405,136; 2022 – $1,282,367)
Fair Value
Total, Fair Value
Fixed maturity securities, available-for-sale
Debt Securities, Available-for-Sale
Secured Overnight Financing Rate (SOFR), Index Adjustment
Secured Overnight Financing Rate (SOFR), Index Adjustment [Member]
Secured Overnight Financing Rate (SOFR), Index Adjustment
Financial Asset, Period Past Due [Axis]
Financial Asset, Aging [Axis]
Supplementary Insurance Information
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Disclosure [Text Block]
Line of Credit Facility, Lender [Domain]
Line of Credit Facility, Lender [Domain]
Gross Unrealized Gains
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Short-term investments
Short-Term Investments [Member]
Equity securities
Net realized and unrealized (losses) gains on investments in equity securities
Equity Securities, FV-NI, Gain (Loss)
Other Operating Expenses and Other Expenses
Other Operating Income and Expense [Text Block]
Convertible Preferred Stock
Convertible Preferred Stock [Member]
Indefinite-lived Intangible Assets [Axis]
Indefinite-Lived Intangible Assets [Axis]
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Ceded Credit Risk [Table]
Ceded Credit Risk [Table]
Commercial mortgage and asset-backed
Commercial Mortgage And Asset Backed Amortized Cost
Represents amortized cost of commercial mortgage and asset-backed.
Related Party Transactions [Abstract]
Related Party Transactions [Abstract]
Title of Individual [Domain]
Title of Individual [Domain]
Investments
Investment [Text Block]
Limited partnerships
Partnership Interest [Member]
Dividends payable
Dividends Payable
Year 4
Short-Duration Insurance Contracts, Historical Claims Duration, Year Four
Agency one
Agency One [Member]
Name of party.
Broker three
Broker Three [Member]
Broker Three [Member]
Total fair value of shares vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Net realized and unrealized gains (losses) on investments
Total
Net realized and unrealized gains (losses) on investments
Gain (Loss) on Investments
Additional paid-in capital
Additional paid-in capital
Additional Paid in Capital
Changes in fair values of short-term investments and other
Short Term Investments And Other, Changes in Fair Value
Short Term Investments And Other, Changes in Fair Value
After five years through ten years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Income Taxes
Income Tax, Policy [Policy Text Block]
2026
Finite-Lived Intangible Asset, Expected Amortization, Year Three
Reserve for losses and loss adjustment expenses
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Reserve for Unpaid Claim and Claim Adjustment Expense
Reinsurance premium
Reinsurance Premium
Reinsurance Premium
Notes Receivable One
Notes Receivable One [Member]
Notes Receivable One
Loss on held for sale classification of discontinued operations
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax
Related Party [Axis]
Related Party, Type [Axis]
Aggregate intrinsic value of options outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
Policy acquisition costs deferred
Policy Acquisition Costs Deferred
Represents amount of policy acquisition costs deferred during the period.
Entity Registrant Name
Entity Registrant Name
2025
Finite-Lived Intangible Asset, Expected Amortization, Year Two
Deferred tax liabilities:
Components of Deferred Tax Liabilities [Abstract]
Auditor Name
Auditor Name
Schedule of Deferred Policy Acquisition Costs
Deferred Policy Acquisition Costs [Table Text Block]
IBNR
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount
Preferred stock, dividend rate, percentage
Preferred Stock, Dividend Rate, Percentage
Accumulated depreciation
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Exercisable, end of year (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Dividend payable, record date
Dividends Payable, Date of Record
Corporate and Other
Corporate and Other
Corporate and Other [Member]
Consolidated gross written premiums percentage
Consolidated Gross Written Premiums Percentage
Represents consolidated gross written premiums percentage.
Other invested assets:
Other Investments [Abstract]
Entity Central Index Key
Entity Central Index Key
Dividends payable, date to be paid
Dividends Payable, Date to be Paid
Total gains or losses (realized/unrealized) - Included in earnings
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Series A Preferred Shares
Temporary Equity Disclosure [Text Block]
Temporary Equity Disclosure
Share based compensation expense
Share-Based Payment Arrangement, Expense
Reinsurance Transaction [Axis]
Reinsurance Transaction [Axis]
Reinsurance Transaction
Fair Value
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Fair Value
Gross Carrying Amount
Finite-Lived Intangible Assets, Gross
Impairment loss
Equity Method Investment, Other than Temporary Impairment
Cash dividends declared
Dividends, Preferred Stock, Cash
Reserve for losses and loss adjustment expenses
Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve
Accounting Policies [Line Items]
Accounting Policies [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.
Cash paid to effect a loss portfolio transfer reinsurance transaction
Payment To Effect a Loss Portfolio Transfer Reinsurance Transaction
Payment To Effect a Loss Portfolio Transfer Reinsurance Transaction
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Table]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Table]
Net unrealized gains (losses), net of taxes of $6,384 in 2023, $(27,041) in 2022, and $(7,135) in 2021
Other comprehensive (loss) income
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Net cash used in operating activities of discontinued operations
Cash Provided by (Used in) Operating Activities, Discontinued Operations
Policy acquisition costs deferred:
Deferred Costs [Abstract]
Unearned premiums
Disposal Group, Including Discontinued Operation, Unearned Premiums
Disposal Group, Including Discontinued Operation, Unearned Premiums
Issuance of common shares
Stock Issued During Period, Value, New Issues
Loss from discontinued operations
Loss from discontinued operations
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax
Net unrealized losses
Deferred Tax Asset, Debt Securities, Available-for-Sale, Unrealized Loss
Renewable energy LLCs
Renewable Energy Llcs [Member]
Name of the investment category.
Entity [Domain]
Entity [Domain]
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Amendment Flag
Amendment Flag
Series A redeemable preferred shares, outstanding (in shares)
Temporary Equity, Shares Outstanding
Legal Entity [Axis]
Legal Entity [Axis]
Identifiable intangible assets subject to amortization
Finite-Lived Intangible Assets, Net [Abstract]
Net realized investment (losses) gains
Net realized investment (losses) gains
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
Bank loan participations, gross realized gain
Bank Loan Participations, Gross Realized Gain
Represents the gross realized gains on bank loan participations.
Weighted average discount rate
Operating Lease, Weighted Average Discount Rate, Percent
Insurance licenses and authorities
Licensing Agreements [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Interest paid
Interest paid
Interest Paid, Excluding Capitalized Interest, Operating Activities
One year or less
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
Series A redeemable preferred shares, issued (in shares)
Temporary Equity, Shares Issued
Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease) [Abstract]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Pre close dividend, forgiveness
Selling Agreement, Pre Close Dividend, Forgiveness
Selling Agreement, Pre Close Dividend, Forgiveness
Diluted (in shares)
Diluted (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Reinsurance recoverable on paid losses
Reinsurance Recoverable for Paid Claims and Claims Adjustments
Amortization of policy acquisition costs
Amortization of policy acquisition costs
Deferred Policy Acquisition Costs, Amortization Expense
Private Speciality Credit
Private Speciality Credit [Member]
Private Speciality Credit
Fixed maturity securities
Debt Securities, Available-for-Sale, Realized Gain (Loss)
Schedule of Disposal Groups, JRG Re's Assets and Liabilities and Operating Results
Disposal Groups, Including Discontinued Operations [Table Text Block]
Reinsurance and Adjustable Features of Insurance and Reinsurance Contracts
Reinsurance Accounting Policy [Policy Text Block]
Reinsurance
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Text Block]
Expenses:
Expenses:
Operating Expenses [Abstract]
Renewable energy notes receivable
Renewable Energy Bridge Financing Notes [Member]
Name of the investment category.
Fixed maturity securities, gross realized losses
Debt Securities, Available-for-Sale, Realized Loss
Purchases of property and equipment
Payments to Acquire Property, Plant, and Equipment
Funds held
Increase (Decrease) in Funds Held under Reinsurance Agreements
Total assets
Assets
Schedule of Average Annual Percentage Payouts of Incurred Claims by Age, Net of Reinsurance
Short-Duration Insurance Contracts, Schedule of Historical Claims Duration [Table Text Block]
Reserve for losses and loss adjustment expenses
Liability for Claims and Claims Adjustment Expense, Property-Casualty Liability
Compensation expense under share incentive plans
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Ceded
Ceded Premiums Earned
Excess Property
Excess Property [Member]
Name of underwriting division.
Statutory net (loss) income
Statutory net income (loss)
Statutory Accounting Practices, Statutory Net Income Amount
Series A Preferred Stock
Series A Preferred Stock [Member]
Year 10
Short-Duration Insurance Contracts, Historical Claims Duration, Year 10
2014 Long Term Incentive Plan
Long Term Incentive Plan 2014
Long Term Incentive Plan 2014 [Member]
Represents information regarding Long Term Incentive Plan 2014.
Schedule of Premiums Written, Premiums Earned, and Losses and Loss Adjustment Expenses
Effects of Reinsurance [Table Text Block]
Vested (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Investment in LLC
Investment In Llc [Member]
Represents investment in LLC`s.
Minimum liquidity ratio
Minimum Liquidity Ratio
Represents minimum liquidity ratio required to be maintained.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Gross investment income
Gross Investment Income, Operating
Equity securities, at cost
Equity Securities, FV-NI, Cost
Scenario [Axis]
Scenario [Axis]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Statutory Accounting Practices, Jurisdiction [Domain]
Statutory Accounting Practices, Jurisdiction [Domain]
Basic (in shares)
Weighted Average Number of Shares Outstanding, Basic
Letter of Credit 75 Million
Letter Of Credit 75 Million [Member]
Letter Of Credit 75 Million
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Revenues:
Revenues:
Revenues [Abstract]
Cash paid to JRGH
Payment For Selling Agreement, Pre Close Dividend
Payment For Selling Agreement, Pre Close Dividend
Other Income
Other Income [Policy Text Block]
Represents disclosure of accounting policy for other income composition and revenue recognition policy.
Issuances of common shares under equity incentive plans
Issuances of common shares under equity incentive plans
Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised
Operating activities
Operating activities
Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]
Statement [Line Items]
Statement [Line Items]
Reinsurance Transaction [Domain]
Reinsurance Transaction [Domain]
Reinsurance Transaction [Domain]
Investment in private subordinated notes
Other invested assets – notes receivable
Notes Receivable
Represents carrying value of notes receivable as on reporting date.
Intangible assets
Deferred Tax Liabilities, Intangible Assets
Increase (Decrease) In Common Stock Issued And Outstanding [Roll Forward]
Increase (Decrease) In Common Stock Issued And Outstanding [Roll Forward]
Increase (Decrease) In Common Stock Issued And Outstanding
Schedule of Gross Unrealized Losses and Fair Value for Available-for-Sale Securities
Debt Securities, Available-for-Sale [Table Text Block]
Cost or Amortized Cost
Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract]
Total loss from discontinued operations
(Loss) income from discontinued operations
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent