Goodwill and Intangible Assets Disclosure [Abstract] Intangible assets amortization expense Amortization of Intangible Assets Fair Value Option [Abstract] Fair Value Option [Abstract] Fair Value Option Fair Value, Option [Text Block] General Discussion of Derivative Instruments and Hedging Activities [Abstract] Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Financial Instruments, Owned, at Fair Value [Abstract] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] General [Abstract] General [Abstract] Consolidation and Basis of Presentation Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Earnings per Share Earnings Per Share, Policy [Policy Text Block] Deferred Policy Acquisition Costs Capitalization of Deferred Policy Acquisition Costs, Policy [Policy Text Block] Derivative Financial Instruments [Table] Derivative Financial Instruments [Table] Derivative Financial Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Credit Facility [Domain] Credit Facility [Domain] Loans [Member] Loans [Member] Union Bank [Member] Union Bank [Member] Union Bank [Member] Bank Of America [Member] Bank Of America [Member] Bank Of America [Member] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Interest rate swap agreements [Member] Interest Rate Swap [Member] Secured Notes Payable [Axis] Securities or Other Assets Sold under Agreements to Repurchase [Axis] Secured Notes Payable, Type [Domain] Assets Sold under Agreements to Repurchase, Type [Domain] Credit Facility [Member] Credit Facility [Member] Credit Facility [Member] Derivative Financial Instruments [Line Items] Debt Instrument [Line Items] Secured notes Secured Debt Fixed rate Derivative, Fixed Interest Rate Maturity date of senior notes Debt Instrument, Maturity Date, Description Loan maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Floating rate, LIBOR plus basis points (as a percentage) Debt Instrument, Basis Spread on Variable Rate Loan mature date Line of Credit Facility, Expiration Date Fair market value of the interest rate swap Interest Rate Fair Value Hedge Asset at Fair Value Share-based Compensation, Allocation and Classification in Financial Statements [Abstract] Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Non-hedging derivatives [Member] Not Designated as Hedging Instrument [Member] Derivative Instruments, Gain (Loss) by Derivative Instrument Risk [Axis] Derivative Instrument Risk [Axis] Derivative Contract Type [Domain] Derivative Contract Type [Domain] Equity contracts [Member] Equity Contract [Member] Derivatives, Fair Value, by Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other liabilities [Member] Other Liabilities [Member] Short-term investments [Member] Short-term Investments [Member] Derivative Financial Instruments [Line Items] Derivative Financial Instruments [Line Items] Derivative Financial Instruments [Line Items] Asset Derivatives Derivative Liability, Fair Value, Gross Asset Liability Derivatives Derivative Liability, Fair Value, Gross Liability Schedule of Finite-Lived Intangible Assets by Major Class [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Customer relationships [Member] Customer Relationships [Member] Trade names [Member] Trade Names [Member] Software [Member] Computer Software, Intangible Asset [Member] Technology [Member] Technology Equipment [Member] Favorable leases [Member] Off-Market Favorable Lease [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Carrying Amount Finite-Lived Intangible Assets, Net Useful Lives (in years) Finite-Lived Intangible Asset, Useful Life Schedule Of Performance Vesting Restricted Stock Units Granted Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block] Document And Entity Information [Abstract] Document and Entity Information Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Income Taxes Income Tax Disclosure [Text Block] Gains And Losses Due To Changes In Fair Value Of Investments Unrealized Gain (Loss) on Investments [Table Text Block] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Axis] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Axis] Schedule of Fair Value of Separate Accounts by Major Category of Investment, Category [Domain] Schedule of Fair Value of Separate Accounts by Major Category of Investment, Category [Domain] Fixed maturity securities [Member] Fixed Income Securities [Member] Equity securities [Member] Equity Securities [Member] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] Gains and losses due to changes in fair value of investments Fair Value, Option, Changes in Fair Value, Gain (Loss) Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis Valuation Techniques Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block] Summary Of Changes In Fair Value Of Level 3 Financial Assets And Financial Liabilities Held At Fair Value Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Summary Of Location And Amounts Of Derivative Fair Values In The Consolidated Balance Sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule Of Derivative Gains And Losses In The Consolidated Statements Of Operations Schedule Of Derivative Gains And Losses In Consolidated Statements Of Operations Table Text Block Schedule of Derivative Gains and Losses in the Consolidated Statements of Operations [Table Text Block] Estimated Fair Values of Financial Instruments Estimated Fair Values of Financial Instruments [Table Text Block] Estimated Fair Values of Financial Instruments [Table Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Fixed maturities trading (amortized cost $2,318,100; $2,345,620) Trading Securities, Debt Equity securities trading (cost $458,690; $388,417) Trading Securities, Equity Short-term investments (cost $221,163; $236,433) Short-term Investments Total investments Investments Cash Cash Receivables: Premiums and Other Receivables, Net [Abstract] Premiums Premiums Receivable, at Carrying Value Accrued investment income Accrued Investment Income Receivable Other Other Receivables Total receivables Premiums and Other Receivables, Net Deferred policy acquisition costs Deferred Policy Acquisition Costs Fixed assets, net Property, Plant and Equipment, Net Current income taxes Income Taxes Receivable Deferred income taxes Deferred Tax Assets, Net of Valuation Allowance Goodwill Goodwill Other intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets Total assets Assets LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities and Equity [Abstract] Losses and loss adjustment expenses Liability for Claims and Claims Adjustment Expense, Property Casualty Liability Unearned premiums Unearned Premiums Notes payable Notes Payable Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Current income taxes Accrued Income Taxes, Current Deferred income taxes Deferred Tax Liabilities, Gross Other liabilities Other Liabilities Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Shareholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock without par value or stated value: Authorized 70,000 shares; issued and outstanding 54,911; 54,856 Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Total shareholders' equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and shareholders' equity Liabilities and Equity Potentially dilutive securities (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Deferred policy acquisition cost amortization Deferred Policy Acquisition Cost, Amortization Expense Advertising expenses Advertising Expense Three-year performance period ending December 31, Performance Vesting Restricted Stock Units, Three-Year Performance Period Ending, Years Performance vesting restricted stock units, three-year performance period ending, years. Vesting shares, target Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vesting shares, maximum Performance Vesting Restricted Stock Units, Vesting Shares, Maximum Performance vesting restricted stock units, vesting shares, maximum. Restricted stock granted (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Remainder of 2012 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2013 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2014 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Derivative Instruments, Gain (Loss) by Income Statement Location [Axis] Income Statement Location [Axis] Income Statement and Other Comprehensive Income Location [Domain] Income Statement Location [Domain] Other comprehensive income (loss) [Member] Other Comprehensive Income (Loss) [Member] Other revenue [Member] Other Income [Member] Net realized investment gains (losses) [Member] Net Realized Investment Gains [Member] Net Realized Investment Gains [Member] Derivative Instruments, Gain (Loss) by Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Derivative Contracts for Cash Flow Hedges [Member] Cash Flow Hedging [Member] Derivatives Not Designated as Hedging Instrument [Member] Gain Recognized in Other Comprehensive Income (Loss) Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Gain Recognized in Income (Loss) Derivative Instruments, Gain (Loss) Recognized in Income, Net Statement of Other Comprehensive Income [Abstract] Net income (loss) Net Income (Loss) Attributable to Parent Other comprehensive income, before tax: Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Gains on hedging instrument Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax Other comprehensive income, before tax: Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Income tax expense related to gains on hedging instrument Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Recognition of tax benefits threshold, likeliness of realization Percentage of Largest Amount of Tax Benefit Realized Percentage of Largest Amount of Tax Benefit Realized New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Recently Issued Accounting Standards Description of New Accounting Pronouncements Not yet Adopted [Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Derivative Instrument Risk [Axis] Equity Contract [Member] Financial Instrument [Axis] Financial Instrument [Axis] Types of Financial Instruments [Domain] Types of Financial Instruments [Domain] Investments [Member] Investments [Member] Interest Rate Swap [Member] Secured Notes [Member] Secured Debt [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Assets Investments Investments, Fair Value Disclosure Liabilities Liabilities [Abstract] Interest rate swap agreements Derivative Financial Instruments, Liabilities, Fair Value Disclosure Equity contracts Equity Contracts Financial Instruments Liabilities Fair Value Disclosure Equity Contracts Financial Instruments Liabilities Fair Value Disclosure Secured notes payable Debt Instrument, Fair Value Disclosure Subsequent Events [Abstract] Subsequent Event Subsequent Events [Text Block] Schedule Of Components Of Other Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule Of Estimated Future Amortization Expense Related To Intangible Assets Schedule of Expected Amortization Expense [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Contingencies Commitments and Contingencies Disclosure [Text Block] Fair Value Measurement [Table] Fair Value Measurement [Table] Fair Value Measurement [Table] Commercial Mortgage Backed Securities [Member] Commercial Mortgage Backed Securities [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Fair Value Measurement [Line Items] Fair Value Measurement [Line Items] Fair Value Measurement [Line Items] Percentage of portfolio of unadjusted fair values obtained Percentage Of Unadjusted Fair Value Obtained Percentage of unadjusted fair value obtained Percentage of portfolio of specific unadjusted broker quotes obtained Percentage of specific unadjusted broker quotes obtained Percentage of specific unadjusted broker quotes obtained Number of knowledgeable outside security brokers consulted to determine fair value Number of knowledgeable outside security brokers consulted to determine fair value Number of knowledgeable outside security brokers consulted to determine fair value. Trading securities, fair value disclosure Trading Securities, Fair Value Disclosure Transfers between Levels 1, 2, and 3 of the fair value hierarchy Fair Value, Transfers Between Levels One, Two, and Three, Amount The amount of the transfers of assets or liabilities into or out of Levels 1, 2, and 3. General Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Schedule of Share-based Compensation Arrangement [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Award Type [Domain] Options granted prior to 2008 [Member] Options Granted Prior To Two Thousand Eight [Member] Options Granted Prior to Two Thousand Eight [Member] Options granted subsequent to January 1, 2008 [Member] Options Granted Subsequent To January One Two Thousand Eight [Member] Options Granted Subsequent to January One, Two Thousand Eight [Member] Maximum [Member] Maximum [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Option vesting term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Performance period of restricted stock units (in years) Performance Period of Restricted Stock and Restricted Stock Units Performance period of restricted stock and restricted stock units Fair Value Measurement Fair Value, Measurement Inputs, Disclosure [Text Block] Income Statement [Abstract] Revenues: Revenues [Abstract] Net premiums earned Premiums Earned, Net, Property and Casualty Net investment income Interest and Dividend Income, Operating Net realized investment gains (losses) Realized Investment Gains (Losses) Other Other Income Total revenues Revenues Expenses: Benefits, Losses and Expenses [Abstract] Losses and loss adjustment expenses Policyholder Benefits and Claims Incurred, Net Policy acquisition costs Other operating expenses Other Cost and Expense, Operating Interest Interest Expense Total expenses Benefits, Losses and Expenses Income (loss) before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net income (loss) Net income (loss) per share: Earnings Per Share [Abstract] Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Weighted average shares outstanding: Earnings Per Share, Basic, Other Disclosures [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Dividends paid per share (in dollars per share) Common Stock, Dividends, Per Share, Declared Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Option, Quantitative Disclosures, by Eligible Item or Group [Axis] Eligible Item or Group for Fair Value Option [Axis] Fair Value, Option, Eligible Item or Group [Domain] Fair Value, Option, Eligible Item or Group [Domain] Municipal Securities [Member] Municipal Bonds [Member] Collateralized Debt Obligations [Member] Collateralized Debt Obligations [Member] Partnership Interest in a Private Credit Fund [Member] Partnership Interest In Private Credit Fund [Member] Partnership Interest In A Private Credit Fund [Member]. Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] 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] Beginning Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Realized gains (losses) included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Purchase Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Ending Balance The amount of total gains (losses) for period included in earnings attributable to assets still held at September 30 Amount of total losses gains for period included in earnings attributable to assets still held Amount of total losses gains for period included in earnings attributable to assets still held Amortized cost on fixed maturities trading investments Amortized Cost On Fixed Maturity Trading Investments Amortized cost on fixed maturity trading investments Cost - equity security trading investments Cost Equity Security Trading Investments Cost - Equity Security Trading Investments Cost - short-term investments Cost Short Term Investments Cost of investments in short-term bonds and money market instruments. Common Stock Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Common stock, no par value Common Stock, No Par Value Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Schedule of Fair Value, Off-balance Sheet Risks [Table] Schedule of Fair Value, Off-balance Sheet Risks [Table] Secured Notes One [Member] Secured Notes One [Member] Secured Notes One [Member] Secured Notes Two [Member] Secured Notes Two [Member] Secured Notes Two [Member] Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, Qualitative Disclosures Related to Election, by Eligible Item or Group [Axis] Fair Value, Qualitative Disclosures Related to Election, by Eligible Item or Group [Axis] Fair Value, Qualitative Disclosures Related to Election, by Eligible Item or Group [Axis] Fair Value, Qualitative Disclosures Related to Election, by Eligible Item or Group [Domain] Fair Value, Qualitative Disclosures Related to Election, by Eligible Item or Group [Domain] Fair Value, Qualitative Disclosures Related to Election, by Eligible Item or Group [Domain] U.S. government bonds and agencies [Member] US Government Agencies Debt Securities [Member] Municipal securities [Member] Mortgage-backed securities [Member] Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Corporate securities [Member] Corporate Debt Securities [Member] Collateralized debt obligations [Member] Public utilities [Member] Public Utility, Equities [Member] Banks, trusts and insurance companies [Member] Banks, Trust and Insurance, Equities [Member] Energy and other [Member] Industrial, Miscellaneous, and All Others [Member] Non-redeemable preferred stock [Member] Nonredeemable Preferred Stock [Member] Partnership interest in a private credit fund [Member] Short-term bonds [Member] Money market instruments [Member] Money Market Funds [Member] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Assets Fair Value Assets Measured On Recurring Basis This element represents a certain statement of financial position asset caption which represents a class of assets, or which may include an individual asset, measured at fair value on a recurring basis. Liabilities Fair Value Liabilities Measured On Recurring Basis This element represents liabilities, including [financial] instruments that are classified in stockholders' equity, which are measured at fair value on a recurring basis. Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Amortization and Accretion, Net Net realized investment (gains) losses Bond amortization, net Amortization of Debt Discount (Premium) Excess tax benefit from exercise of stock options Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Operating Activities Increase in premiums receivables Increase (Decrease) in Premiums Receivable Change in current and deferred income taxes Increase (Decrease) in Deferred Income Taxes Increase in deferred policy acquisition costs Increase (Decrease) in Deferred Policy Acquisition Costs Decrease in unpaid losses and loss adjustment expenses Increase (Decrease) in Loss and Loss Adjustment Expense Reserve Increase in unearned premiums Increase (Decrease) in Unearned Premiums Increase in accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Share-based compensation Share-based Compensation Increase in other payables Increase (Decrease) in Other Accounts Payable Other, net Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Fixed maturities available-for-sale in nature: Purchases Payments to Acquire Available-for-sale Securities, Debt Fixed maturities available-for-sale in nature: Sales Proceeds from Sale of Available-for-sale Securities, Debt Fixed maturities available-for-sale in nature: Calls or maturities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Equity securities available-for-sale in nature: Payments to Acquire Marketable Securities [Abstract] Purchases Payments to Acquire Available-for-sale Securities, Equity Sales Proceeds from Sale of Available-for-sale Securities, Equity Calls Proceeds From Calls Of Available For Sale Securities Equity Proceeds from calls of available for sale securities equity. Net decrease in payable for securities Increase (Decrease) in Broker-Dealer Related Receivables (Payables), Net Net decrease (increase) in short-term investments Proceeds from Sale of Short-term Investments Purchase of fixed assets Payments to Acquire Productive Assets Sale of fixed assets Proceeds from Sale of Productive Assets Other, net Payments for (Proceeds from) Other Investing Activities Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Dividends paid to shareholders Payments of Ordinary Dividends, Common Stock Excess tax benefit from exercise of stock options Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities Proceeds from stock options exercised Proceeds from Stock Options Exercised Payment to retire senior notes Repayments of Unsecured Debt Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Net (decrease) increase in cash Cash and Cash Equivalents, Period Increase (Decrease) Cash: Cash and Cash Equivalents, at Carrying Value [Abstract] Beginning of the year End of period SUPPLEMENTAL CASH FLOW DISCLOSURE Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid Income taxes paid Income Taxes Paid