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Document and Entity Information
Financial Statements
Consolidated Balance Sheets
Consolidated Balance Sheets (Parenthetical)
Consolidated Statements of Income
Consolidated Statements of Comprehensive Income
Consolidated Statements of Shareholders' Equity
Consolidated Statements of Shareholders' Equity (Parenthetical)
Consolidated Statements of Cash Flows
Notes to Financial Statements
Business and Significant Accounting Policies
Investments
Sale of Real Estate Holding
Reinsurance
Derivative Instruments
Reserves for Losses and Loss Adjustment Expenses
Junior Subordinated Debentures
Other Indebtedness
Disclosures about Fair Value of Financial Instruments
Shareholders' Equity
Accumulated Other Comprehensive Income (Loss)
Net Income Per Common Share
Share-based Compensation
Underwriting, Acquisition and Insurance Expenses
Income Taxes
Pension Benefits
Commitments and Contingencies
Leases
Segment Information
Run-off Lines
Statutory Accounting Principles
Insurance Assessments
Transactions with Related Parties
Unaudited Quarterly Financial Data
Information Provided in Connection with Outstanding Debt of Subsidiaries
Subsequent Event
Schedule II Condensed Financial Information of Registrant
Schedule III Supplemental Insurance Information
Schedule V Valuation and Qualifying Accounts
Schedule VI Supplemental Information for Property-Casualty Insurance Companies
Accounting Policies
Business and Significant Accounting Policies (Policies)
Notes Tables
Business and Significant Accounting Policies (Tables)
Investments (Tables)
Reinsurance (Tables)
Reserves for Losses and Loss Adjustment Expenses (Tables)
Junior Subordinated Debentures (Tables)
Other Indebtedness (Tables)
Disclosures about Fair Value of Financial Instruments (Tables)
Shareholders' Equity (Tables)
Accumulated Other Comprehensive Income (Loss) (Tables)
Net Income Per Common Share (Tables)
Share-based Compensation (Tables)
Underwriting, Acquisition and Insurance Expenses (Tables)
Income Taxes (Tables)
Pension Benefits (Tables)
Leases (Tables)
Segment Information (Tables)
Run-off Lines (Tables)
Statutory Accounting Principles (Tables)
Unaudited Quarterly Financial Data (Tables)
Information Provided in Connection with Outstanding Debt of Subsidiaries (Tables)
Subsequent Event (Tables)
Notes Details
Business and Significant Accounting Policies - Additional Information (Detail)
Business and Significant Accounting Policies - Summary of Receivables (Detail)
Business and Significant Accounting Policies - Intangible Assets and Accumulated Amortization (Detail)
Business and Significant Accounting Policies - Supplemental Cash Flow Information (Detail)
Investments - Schedule of Amortized Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value of Investments (Detail)
Investments - Additional Information (Detail)
Investments - Schedule of Amortized Cost and Fair Values of Fixed Maturity Investments, by Contractual Maturity (Detail)
Investments - Schedule of Carrying Value Redemption Characteristics and Unfunded Investment Commitments of Other Invested Assets Portfolio (Detail)
Investments - Schedule of Aging of Unrealized Losses on Company's Investments in Fixed Maturities, Equity Securities and Other Investments (Detail)
Investments - Schedule of Aging of Unrealized Losses on Company's Investments in Fixed Maturities, Equity Securities and Other Investments (Parenthetical) (Detail)
Investments - Schedule of Investment Income and Expenses (Detail)
Investments - Schedule of Company's Gross Realized Investment Gains (Losses) (Detail)
Investments - Schedule of Realized Gains (Losses) and Changes in Unrealized of Appreciation(Depreciation) (Detail)
Investments - Financial Assets Measured at Fair Value on Recurring Basis (Detail)
Investments - Schedule of Reconciliation of Beginning and Ending Balances for Investments Categorized as Level 3 (Detail)
Sale of Real Estate Holding - Additional Information (Detail)
Reinsurance - Additional Information (Detail)
Reinsurance - Schedule of Reinsurance Premium (Detail)
Derivative Instruments - Additional Information (Detail)
Reserves for Losses and Loss Adjustment Expenses - Reinsurance Recoverables (Detail)
Reserves for Losses and Loss Adjustment Expenses - Additional Information (Detail)
Senior Unsecured Fixed Rate Notes - Additional Information (Detail)
Junior Subordinated Debentures - Additional Information (Detail)
Junior Subordinated Debentures - Schedule of Junior Subordinated Debentures (Detail)
Other Indebtedness - Additional Information (Detail)
Other Indebtedness - Schedule of Floating Rate Loan Stock, Notes Outstanding (Detail)
Disclosures about Fair Value of Financial Instruments - Additional Information (Detail)
Disclosures about Fair Value of Financial Instruments - Summary of Company's Financial Instruments Whose Carrying Amount Did Not Equal Fair Value (Detail)
Shareholders Equity - Additional Information (Detail)
Shareholders Equity - Schedule of Repurchase of Shares (Detail)
Shareholders' Equity - Schedule of Authorized and Unissued Common Shares Reserved (Detail)
Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Detail)
Accumulated Other Comprehensive Income (Loss) - Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail)
Net Income Per Common Share - Net Income Per Common Share on Basic and Diluted Basis (Detail)
Net Income Per Common Share - Additional Information (Detail)
Share-based Compensation - Additional Information (Detail)
Share-based Compensation - Fair Value Assumptions (Detail)
Share-Based Compensation - 2014 Long-Term Incentive Plan - Additional Information (Detail)
Share-based Compensation - Summary of Option Activity (Detail)
Share-based Compensation - Summary of Restricted Share Activity (Detail)
Share-based Compensation - Summary of Stock-Settled SARs Activity (Detail)
Share-based Compensation - Summary of Cash-Settled SARs Activity (Detail)
Share-Based Compensation - Employees Share Purchase Plans - Additional Information (Detail)
Share-Based Compensation - Deferred Compensation Plan for Non-Employee Directors - Additional Information (Detail)
Underwriting, Acquisition and Insurance Expenses - Underwriting, Acquisition and Insurance Expenses (Detail)
Underwriting, Acquisition and Insurance Expenses - Additional Information (Detail)
Income Taxes - Income Tax Provision (Benefit) (Detail)
Income Taxes - Schedule of Pre-Tax Income (Loss) and Effective Income Tax Rates (Detail)
Income Taxes - Schedule of Pre-Tax Income (Loss) and Effective Income Tax Rates (Parenthetical) (Detail)
Income Taxes - Reconciliation of Difference Between Provision for Income Taxes and Expected Tax Provision at Weighted Average Tax Rate (Detail)
Income Taxes - Additional Information (Detail)
Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail)
Pension Benefits - Schedule of Change in Plan Assets (Detail)
Pension Benefits - Schedule of Change in Projected Benefit Obligation (Detail)
Pension Benefits - Additional Information (Detail)
Pension Benefits - Schedule of Assumptions to Determine Benefit Obligations (Detail)
Pension Benefits - Schedule of Assumptions to Determine Net Periodic Benefit Cost (Detail)
Pension Benefits - Components of Net Periodic Benefit Cost (Detail)
Pension Benefits - Schedule of Fair Value Measurement (Detail)
Pension Benefits - Schedule of Expected Benefit Payments (Detail)
Commitments and Contingencies - Additional Information (Detail)
Leases - Schedule of Future Minimum Payments Under Non-Cancelable Operating Leases (Detail)
Lease - Additional Information (Detail)
Segment Information - Additional Information (Detail)
Segment Information - Revenue and Income (Loss) Before Income Taxes for Each Segment (Detail)
Segment Information - Schedule of Earned Premiums by Geographic Location (Detail)
Segment Information - Identifiable Assets (Detail)
Segment Information - Schedule of Goodwill and Intangible Assets Net of Accumulated Amortization (Detail)
Run-Off Lines - Gross Reserves for Run-Off Lines (Detail)
Run-Off Lines - Total Gross Reserves for Asbestos Exposure (Detail)
Run-Off Lines - Net Underwriting Results for Run-Off Lines (Detail)
Statutory Accounting Principle - Statutory Capital and Surplus for Principal Operating Subsidiaries (Detail)
Statutory Accounting Principles - Statutory Net Income (Loss) for Principal Operating Subsidiaries (Detail)
Statutory Accounting Principles - Additional Information (Detail)
Insurance Assessments - Additional Information (Detail)
Transactions with Related Parties - Additional Information (Detail)
Unaudited Quarterly Financial Data - Quarterly Financial Data (Detail)
Information Provided in Connection With Outstanding Debt of Subsidiaries - Additional Information (Detail)
Information Provided in Connection with Outstanding Debt of Subsidiaries - Condensed Consolidating Balance Sheet (Detail)
Information Provided in Connection with Outstanding Debt of Subsidiaries - Condensed Consolidating Statement of Income (Detail)
Information Provided in Connection with Outstanding Debt of Subsidiaries - Condensed Consolidating Statement of Cash Flows (Detail)
Subsequent Event - Additional Information (Details)
Subsequent Event - Pro Forma Basic and Diluted Net Income per Common Share after Stock Dividend (Details)
Schedule II - Schedule of Balance Sheets (Detail)
Schedule II - Schedule of Statements of Income (Detail)
Schedule II - Schedule of Statements of Income (Parenthetical) (Detail)
Schedule II - Schedule of Statements of Cash Flows (Detail)
Schedule III - Supplemental Insurance Information (Detail)
Schedule V - Valuation and Qualifying Accounts (Detail)
Schedule VI - Supplemental Information for Property-Casualty Insurance Companies (Detail)
All Reports
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