Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table]
Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table]
Award Type [Axis]
Award Type [Axis]
Award Type [Domain]
Equity Award [Domain]
Restricted Stock Awards [Member]
Restricted Stock [Member]
Options Awards [Member]
Employee Stock Option [Member]
Basic and Diluted Earnings per Share [Line Items]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income
Net Income (Loss) Attributable to Parent
Weighted-average common shares outstanding (in shares)
Weighted Average Number of Shares Outstanding, Basic
Add dilutive effect of share-based awards outstanding (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
Weighted-average common share for EPS calculation (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Basic earnings per common share (in dollars per share)
Earnings Per Share, Basic
Diluted earnings per common share (in dollars per share)
Earnings Per Share, Diluted
Awards excluded from diluted EPS calculation (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Segment Reporting [Abstract]
Segment Information
Segment Reporting Disclosure [Text Block]
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Consolidation Items [Axis]
Consolidation Items [Axis]
Consolidation Items [Domain]
Consolidation Items [Domain]
Operating Segments [Member]
Operating Segments [Member]
Intersegment Elimination [Member]
Intersegment Eliminations [Member]
Business Segments [Axis]
Segments [Axis]
Segment [Domain]
Segments [Domain]
Property and Casualty Insurance [Member]
Property, Liability and Casualty Insurance Product Line [Member]
Life Insurance [Member]
Life Insurance Product Line [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Number of business segments
Number of Operating Segments
Number of business locations
Number of Business Locations
Number of Business Locations
Net premiums earned
Premiums Earned, Net
Investment income, net of investment expenses
Net Investment Income
Net realized investment gains (losses)
Realized Investment Gains (Losses)
Other income
Other Income
Total revenues
Revenues
Assets
Assets
Invested assets
Investments
Investments [Abstract]
Schedule of Investments [Table]
Schedule of Investments [Table]
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]
Equity Securities [Member]
Equity Securities [Member]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Maximum [Member]
Maximum [Member]
Schedule of Investments [Line Items]
Schedule of Investments [Line Items]
Trading securities
Trading Securities
Remaining potential off-balance sheet contractual obligation
Remaining Potential Off-Balance Sheet Contractual Obligation
Remaining Potential Off-Balance Sheet Contractual Obligation
Other-than-temporary impairment charges
Other than Temporary Impairment Losses, Investments
Largest unrealized loss greater than 12 months on an individual security
Individual Security, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses
Individual Security, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses
Earnings Per Common Share
Earnings Per Share [Text Block]
Components of Basic and Diluted Earnings Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Debt Disclosure [Abstract]
Schedule of Financial Instruments Subject to Mandatory Redemption [Table]
Schedule of Financial Instruments Subject to Mandatory Redemption [Table]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Mercer Insurance Group [Member]
Mercer Insurance Group [Member]
Mercer Insurance Group [Member]
Schedule of Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Axis]
Schedule of Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Axis]
Financial Instruments Subject to Mandatory Redemption, Financial Instrument [Domain]
Financial Instruments Subject to Mandatory Redemption, Financial Instrument [Domain]
Trust Preferred Securities [Member]
Trust Preferred Securities Subject to Mandatory Redemption [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Number of issuances assumed with our acquisition of Mercer Insurance Group
Noncash or Part Noncash Acquisition, Number of Debt Securities Assumed
Noncash or Part Noncash Acquisition, Number of Debt Securities Assumed
Outstanding balance of the Trust Preferred Securities assumed with our acquisition of Mercer Insurance Group
Noncash or Part Noncash Acquisition, Debt Assumed
Number of debt securities redeemed during period
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Number of Debt Securities Redeemed
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Number of Debt Securities Redeemed
Value of debt securities redeemed during period
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Debt Securities Redemption Value
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Debt Securities Redemption Value
Interest expense, trust preferred securities
Interest Expense, Trust Preferred Securities
Debt
Debt Disclosure [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Deferred Policy Acquisition Costs [Table]
Schedule of Deferred Policy Acquisition Costs [Table]
Schedule of Deferred Policy Acquisition Costs [Table]
Deferred Policy Acquisition Costs Disclosure [Line Items]
Deferred Policy Acquisition Costs Disclosure [Line Items]
Deferred Policy Acquisition Costs Disclosure [Line Items]
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Recorded asset at beginning of period
Deferred Policy Acquisition Costs and Value of Business Acquired
Underwriting costs deferred
Deferred Policy Acquisition Costs, Additions
Amortization of deferred policy acquisition costs
Deferred Policy Acquisition Cost, Amortization Expense
Ending unamortized deferred policy acquisition costs
Deferred Policy Acquisition Costs, Net
Change in shadow deferred policy acquisition costs
Deferred Policy Acquisition Cost, Amortization Expense, Unrealized Investment Gains (Losses)
Recorded asset at end of period
Number of states in which we are licensed as insurer
Number of States in which Entity Operates
Payment for income taxes
Income Taxes Paid
Federal tax refund received
Proceeds from Income Tax Refunds
Interest payment
Interest Paid
Decrease to Deferred Acquisition Cost asset related to shadow DAC adjustment
Deferred Policy Acquisition Costs, Period Increase (Decrease), Deferred Acquisition Cost Offset Adjustment Related to Assumed Realization of Unrealized Gains (Losses)
Deferred Policy Acquisition Costs, Period Increase (Decrease), Deferred Acquisition Cost Offset Adjustment Related to Assumed Realization of Unrealized Gains (Losses)
Federal income tax expense (benefit)
Income Tax Expense (Benefit)
Federal statutory rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Summary of Investments
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Line of Credit Facility [Table]
Line of Credit Facility [Table]
Credit Facility [Axis]
Credit Facility [Axis]
Credit Facility [Domain]
Credit Facility [Domain]
Revolving Credit Facility [Member]
Revolving Credit Facility [Member]
Letter of Credit [Member]
Letter of Credit [Member]
Swing Line of Credit [Member]
Swing Line of Credit [Member]
Swing Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Credit agreement term
Debt Instrument, Term
Current borrowing capacity
Line of Credit Facility, Current Borrowing Capacity
Maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Interest expense incurred
Interest Expense
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Statement of Stockholders' Equity [Abstract]
Statement [Table]
Statement [Table]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Common Stocks [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income, Net of Tax [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Statement [Line Items]
Statement [Line Items]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of year
Stockholders' Equity Attributable to Parent
Compensation expense and related tax benefit for stock-based award grants
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition
Shares repurchased
Stock Repurchased During Period, Value
Shares issued for stock-based awards
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures
Dividends on common stock ($0.51 per share)
Dividends, Common Stock
Change in net unrealized investment appreciation
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent
Change in liability for underfunded employee benefit plans
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent
All other changes in stockholders’ equity accounts
Changes In Stockholders Equity Accounts Excluding Net Income Loss
Total changes in stockholders' equity accounts excluding net income loss.
Balance, end of year
Statement of Financial Position [Abstract]
ASSETS
Assets [Abstract]
Investments
Fixed maturities
Marketable Securities, Fixed Maturities [Abstract]
Held-to-maturity, at amortized cost (fair value $1,120 in 2013 and $1,681 in 2012)
Held-to-maturity Securities
Available-for-sale, at fair value (amortized cost $2,724,100 in 2013 and $2,657,800 in 2012)
Available-for-sale Securities, Debt Securities
Trading securities, at fair value (amortized cost $8,480 in 2013 and $12,645 in 2012)
Trading Securities, Debt
Equity securities
Equity Securities [Abstract]
Equity Securities [Abstract]
Available-for-sale, at fair value (cost $70,951 in 2013 and $66,892 in 2012)
Available-for-sale Securities, Equity Securities
Trading securities, at fair value (cost $2,335 in 2013 and $1,772 in 2012)
Trading Securities, Equity
Mortgage loans
Mortgage Loans on Real Estate, Commercial and Consumer, Net
Policy loans
Loans, Gross, Insurance Policy
Other long-term investments
Other Long-term Investments
Short-term investments
Other Short-term Investments
Total Investments
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Accrued investment income
Accrued Investment Income Receivable
Premiums receivable (net of allowance for doubtful accounts of $910 in 2013 and $866 in 2012)
Premiums Receivable, Net
Deferred policy acquisition costs
Property and equipment (primarily land and buildings, at cost, less accumulated depreciation of $35,888 in 2013 and $34,093 in 2012)
Property, Plant and Equipment, Net
Reinsurance receivables and recoverables
Reinsurance Recoverables
Prepaid reinsurance premiums
Prepaid Reinsurance Premiums
Income taxes receivable
Income Taxes Receivable
Goodwill and intangible assets
Goodwill and intangible assets
Goodwill and intangible assets
Other assets
Other Assets
TOTAL ASSETS
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities and Equity [Abstract]
Liabilities
Liabilities [Abstract]
Future policy benefits and losses, claims and loss settlement expenses
Liability for Claims and Claims Adjustment Expense [Abstract]
Property and casualty insurance
Liability for Claims and Claims Adjustment Expense, Property Casualty Liability
Life insurance
Liability for Future Policy Benefits, Life
Unearned premiums
Unearned Premiums
Accrued expenses and other liabilities
Accrued expenses and other liabilities
Accrued expenses and other liabilities.
Deferred income taxes
Deferred Tax Liabilities, Gross
TOTAL LIABILITIES
Liabilities
Stockholders’ Equity
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, $0.001 par value; authorized 75,000,000 shares; 25,401,314 and 25,227,463 shares issued and outstanding in 2013 and 2012, respectively
Common Stock, Value, Issued
Additional paid-in capital
Additional Paid in Capital, Common Stock
Retained earnings
Retained Earnings (Accumulated Deficit)
Accumulated other comprehensive income, net of tax
Accumulated Other Comprehensive Income (Loss), Net of Tax
TOTAL STOCKHOLDERS’ EQUITY
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities and Equity
Compensation and Retirement Disclosure [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table]
Schedule of Defined Benefit Plans Disclosures [Table]
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]
Defined Benefit Plans and Other Postretirement Benefit Plans [Domain]
Defined Benefit Plan and Other Postretirement Benefit Plan [Domain]
Pension Plan [Member]
Pension Plan, Defined Benefit [Member]
Postretirement Benefit Plan [Member]
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost
Defined Benefit Plan, Service Cost
Interest cost
Defined Benefit Plan, Interest Cost
Expected return on plan assets
Defined Benefit Plan, Expected Return on Plan Assets
Amortization of prior service cost
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Amortization of net loss
Defined Benefit Plan, Amortization of Gains (Losses)
Net periodic benefit cost
Defined Benefit Plan, Net Periodic Benefit Cost
Estimated 2013 pension plan contribution, disclosed in prior year 10K
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year
Contribution by employer
Defined Benefit Plan, Contributions by Employer
Share-based Compensation [Abstract]
Stock-based Compensation
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Nature of Operations and Basis of Presentation
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]
Schedule of Marketable Securities [Table]
Schedule of Marketable Securities [Table]
Schedule of Marketable Securities [Table]
Fixed Maturities [Member]
Debt Securities [Member]
U.S. Treasury [Member]
US Treasury Securities [Member]
U.S. Government Agency [Member]
US Government Agencies Debt Securities [Member]
States, Municipalities and Political Subdivisions [Member]
US States and Political Subdivisions Debt Securities [Member]
Foreign Bonds [Member]
Foreign Government Debt Securities [Member]
Public Utilities [Member]
Public Utility, Bonds [Member]
Corporate Bonds [Member]
Corporate Debt Securities [Member]
Mortgage-Backed Securities [Member]
Collateralized Mortgage Backed Securities [Member]
Collateralized Mortgage Obligations [Member]
Collateralized Mortgage Obligations [Member]
Asset-Backed Securities [Member]
Asset-backed Securities [Member]
Redeemable Preferred Stocks [Member]
Redeemable Preferred Stock [Member]
Nonredeemable Preferred Stocks [Member]
Nonredeemable Preferred Stock [Member]
Investment Sector [Axis]
Investment Sector [Axis]
Investment Sector [Domain]
Investment Sector [Domain]
Public Utilities [Member]
Public Utilities [Member]
Public Utilities [Member]
Energy [Member]
Energy [Member]
Energy [Member]
Industrials [Member]
Industrial [Member]
Industrial [Member]
Consumer Goods and Services [Member]
Consumer Goods and Service [Member]
Consumer Goods and Service [Member]
Health Care [Member]
Health Care [Member]
Health Care [Member]
Technology, Media and Telecommunications [Member]
Technology, Media and Telecommunications [Member]
Technology, Media and Telecommunications [Member]
Financial Services [Member]
Financial Services [Member]
Financial Services [Member]
Reconciliation of the Amortized Costs to FAir Value [Line Items]
Schedule of Marketable Securities [Line Items]
Schedule of Marketable Securities [Line Items]
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-maturity Securities, Debt Maturities [Abstract]
Cost or Amortized Cost
Gross Unrealized Appreciation
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain
This item represents the excess of amortized cost basis over fair value of securities in a gain position and which are categorized as held-to-maturity.
Gross Unrealized Depreciation
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss
This item represents the excess of amortized cost basis over fair value of securities in a loss position and which are categorized as held-to-maturity.
Held-to-Maturity, Fair Value
Held-to-maturity Securities, Fair Value
Available-for-sale Securities [Abstract]
Available-for-sale Securities [Abstract]
Cost or Amortized Cost
Available-for-sale Securities, Amortized Cost Basis
Gross Unrealized Appreciation
Available-for-sale Securities, Gross Unrealized Gain, Accumulated in Investments
Amount of accumulated pre-tax unrealized gains before deducting pre-tax unrealized losses on investments in available-for-sale securities impacting investments
Gross Unrealized Depreciation
Available-for-sale Securities, Gross Unrealized Loss, Accumulated in Investments
Amount of accumulated pre-tax unrealized losses before deducting pre-tax unrealized gains on investments in available-for-sale securities impacting investments
Available-for-Sale, Fair Value
Available-for-sale Securities
Fair Value Disclosures [Abstract]
Carrying Value and Estimated Fair Value of Financial Instruments
Fair Value, by Balance Sheet Grouping [Table Text Block]
Financial Instruments Measured at Fair Value on Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Changes in Fair Value of Level 3 Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Employee Benefits
Pension and Other Postretirement Benefits Disclosure [Text Block]
Document and Entity Information [Abstract]
Document and Entity Information [Abstract]
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
Trading Symbol
Trading Symbol
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
Balance Sheet Related Disclosures [Abstract]
Fixed maturities, held-to-maturity securities, fair value
Fixed maturities, available-for-sale securities, amortized cost
Available-for-sale Debt Securities, Amortized Cost Basis
Fixed maturities, trading securities, amortized cost
Trading Securities, Debt, Amortized Cost
Equity securities, available-for-sale securities, amortized cost
Available-for-sale Equity Securities, Amortized Cost Basis
Equity securities, trading securities, amortized cost
Trading Securities, Equity, Cost
Allowance for doubtful accounts
Premiums Receivable, Allowance for Doubtful Accounts
Property and equipment accumulated depreciation
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Common stock, shares authorized
Common Stock, Shares Authorized
Common stock, shares issued
Common Stock, Shares, Issued
Common stock, shares outstanding
Common Stock, Shares, Outstanding
Fair Value of Financial Instruments
Fair Value Disclosures [Text Block]
Fair Value of Investments
Marketable Securities [Table Text Block]
Maturities
Investments Classified by Contractual Maturity Date [Table Text Block]
Net Realized Investment Gains and Losses
Realized Gain (Loss) on Investments [Table Text Block]
Proceeds and Gross Realized Gains and Losses
Schedule of Realized Gain (Loss) [Table Text Block]
Unrealized Appreciation and Depreciation
Unrealized Gain (Loss) on Investments [Table Text Block]
Investments in Unrealized Loss Position
Schedule of Unrealized Loss on Investments [Table Text Block]
Income Statement [Abstract]
Reclassifications for unrealized net gains on available-for-sale securities
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
Reclassification adjustment for employee benefit costs included in expense
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax
Reclassifications adjustments - tax
Other Comprehensive Income (Loss), Total Reclassification Adjustments, Tax, Portion Attributable to Parent
Other Comprehensive Income (Loss), Total Reclassification Adjustments, Tax, Portion Attributable to Parent
Revenues
Revenues [Abstract]
Net realized investment gains (losses)
Realized Investment Gains (Losses) [Abstract]
All other net realized gains (includes reclassifications for net unrealized gains on available-for-sale securities of $617 and $6,270 in 2013; and $91 and $3,111 in 2012; previously included in accumulated other comprehensive income)
All Other Realized Gains (Losses)
All other realized investment gains (losses)
Total net realized investment gains
Benefits, Losses and Expenses
Benefits, Losses and Expenses [Abstract]
Losses and loss settlement expenses
Policyholder Benefits and Claims Incurred, Net
Increase in liability for future policy benefits
Liability for Future Policy Benefits, Period Expense (Income)
Amortization of deferred policy acquisition costs
Deferred Policy Acquisition Cost, Amortization Expense and Amortization of Value of Business Acquired (VOBA)
Deferred Policy Acquisition Cost, Amortization Expense and Amortization of Value of Business Acquired (VOBA)
Other underwriting expenses (includes reclassifications for employee benefit costs of $1,915 and $4,400 in 2013; and $1,085 and $3,460 in 2012; previously included in accumulated other comprehensive income)
Other Underwriting Expense
Interest on policyholders’ accounts
Interest Credited to Policyholders Account Balances
Total benefits, losses and expenses
Benefits, Losses and Expenses
Income before income taxes
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest
Federal income tax expense (includes reclassifications of $455 and ($654) in 2013; and $348 and $124 in 2012; previously included in accumulated other comprehensive income)
Net income
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Change in net unrealized appreciation on investments
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax
Change in liability for underfunded employee benefit plans
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments and Tax
Other comprehensive income (loss), before tax and reclassification adjustments
Other Comprehensive Income (Loss), before Reclassifications, before Tax
Income tax effect
Other Comprehensive Income (Loss), before Reclassifications, Tax
Other Comprehensive Income (Loss), before Reclassifications, Tax
Other comprehensive income (loss), after tax, before reclassification adjustments
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Reclassification adjustment for net realized gains included in income
Total reclassification adjustments, before tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Income tax effect
Total reclassification adjustments, after tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Weighted average common shares outstanding (in shares)
Cash dividends declared per common share (in dollars per share)
Common Stock, Dividends, Per Share, Declared
Deferred Policy Acquisition Costs
Schedule of Deferred Policy Acquisition Costs [Table Text Block]
Schedule of Deferred Policy Acquisition Costs [Table Text Block]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value Hierarchy [Domain]
Fair Value [Member]
Estimate of Fair Value Measurement [Member]
Level 1 [Member]
Fair Value, Inputs, Level 1 [Member]
Level 2 [Member]
Fair Value, Inputs, Level 2 [Member]
Level 3 [Member]
Fair Value, Inputs, Level 3 [Member]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Recurring [Member]
Fair Value, Measurements, Recurring [Member]
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]
Available-for-Sale Securities
Trading Securities
Short- Term Investments
Short-term Investments, Fair Value Disclosure
Short-term Investments, Fair Value Disclosure
Money Market Accounts
Cash and Cash Equivalents, Fair Value Disclosure
Total Assets Measured at Fair Value
Assets, Fair Value Disclosure
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis]
Measurement Basis [Axis]
Fair Value, Disclosure Item Amounts [Domain]
Fair Value Measurement [Domain]
Carrying Value [Member]
Reported Value Measurement [Member]
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 Maturities [Member]
Fixed Maturities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets [Abstract]
Investments
Held-to-maturity fixed maturities
Available-for-sale securities
Mortgage loans
Mortgages Held-for-sale, Fair Value Disclosure
Policy loans
Policy Loan, Fair Value Disclosure
Policy Loan, Fair Value Disclosure
Other long-term investments
Other Long-term Investments, Fair Value Disclosure
Other Long-term Investments, Fair Value Disclosure
Short-term investments
Cash and cash equivalents
Accrued investment income
Accrued Investment Income Receivable, Fair Value Disclosure
Accrued Investment Income Receivable, Fair Value Disclosure
Policy reserves
Liability for Future Policy Benefits [Abstract]
Annuity (accumulations)
Liability For Annuity Accumulations, Fair Value Disclosure
Liability For Annuity Accumulations, Fair Value Disclosure
Annuity (benefit payments)
Liability for Annuity Benefit Payments, Fair Value Disclosure
Liability for Annuity Benefit Payments, Fair Value Disclosure
Schedule of Segment Reporting Information
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Shares repurchased during period (in shares)
Stock Repurchased During Period, Shares
Shares issued for stock-based awards (in shares)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures
Dividends on common stock, per share (in dollars per share)
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Plan Name [Axis]
Plan Name [Axis]
Plan Name [Domain]
Plan Name [Domain]
Employee Stock Award Plan-2008 [Member]
Employee Stock Award Plan-2008 [Member]
Employee Stock Award Plan (the "2008 Stock Plan") [Member]
Director Plan - 2005 [Member]
Director Plan - 2005 [Member]
the 2005 Non-qualified Non-employee Director Stock Option and Restricted Stock Plan (the "Director Plan" [Member]
Unrestricted Stock Awards [Member]
Unrestricted Stock Awards [Member]
Unrestricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of option awards vest and exercisable in installments
Share-based Compensation Arrangement by Share-based Payment Award, Options, Percentage Vested And Exercisable Each Year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Percentage Vested And Exercisable Each Year
Expiration period
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Vesting period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Beginning balance
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Inception to Date, Beginning balance
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
Number of awards granted
Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period, Gross
Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period, Gross
Number of awards forfeited or expired
Share-based Compensation Arrangement by Share-based Payment Award, Forfeitures and Expiration in Period
Number of share-based compensation awards forfeited or expired in Period
Ending balance
Number of option awards exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Number of restricted stock awards vested
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Stock-based compensation expense
Share-based Compensation
Stock-Based Compensation Expense [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
2013
Future Share-based Compensation Expense, Remainder of Current Year
Future Share-based Compensation Expense, Remainder of Current Year
2014
Future Share-based Compensation Expense, Year One
Future Share-based Compensation Expense, Year One
2015
Future Share-based Compensation Expense, Year Two
Future Share-based Compensation Expense, Year Two
2016
Future Share-based Compensation Expense, Year Three
Future Share-based Compensation Expense, Year Three
2017
Future Share-based Compensation Expense, Year Four
Future Share-based Compensation Expense, Year Four
2018
Future Share-based Compensation Expense, Year Five
Future Share-based Compensation Expense, Year Five
Stock-based compensation expense that has yet to be recognized
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
Schedule of Gain (Loss) on Investments [Table]
Schedule of Gain (Loss) on Investments [Table]
Investment [Axis]
Investment [Axis]
Investment [Domain]
Investment [Domain]
Other Long-term Investments [Member]
Categories of Investments, Marketable Securities, Other Long-term Investments [Member]
Categories of Investments, Marketable Securities, Other Long-term Investments [Member]
Investments by Category [Axis]
Investments by Category [Axis]
Gain (Loss) on Investments, Including Marketable Securities and Investments Held at Cost, Categories of Investments [Domain]
Marketable Securities and Investments Held at Cost [Domain]
Held-to-maturity [Member]
Held-to-maturity Securities [Member]
Available-for-sale [Member]
Available-for-sale Securities [Member]
Trading Securities, Change in Fair Value [Member]
Trading Account Assets, Change in Fair Value [Member]
Trading Account Assets, Change in Fair Value [Member]
Trading Securities, Sales [Member]
Trading Account Assets, Sales [Member]
Trading Account Assets, Sales [Member]
Gain (Loss) on Investments [Line Items]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)
Proceeds from sales
Proceeds from Sale of Available-for-sale Securities
Gross realized gains
Available-for-sale Securities, Gross Realized Gains
Gross realized losses
Available-for-sale Securities, Gross Realized Losses
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Net unrealized appreciation on investments [Member]
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Liability for underfunded employee benefit costs [Member]
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period
Change in accumulated other comprehensive income before reclassifications
Reclassification adjustments from accumulated other comprehensive income
Balance at end of period
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Cash and Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Deferred Policy Acquisition Costs
Deferred Policy Acquisition Costs, Policy [Policy Text Block]
Income Taxes
Income Tax, Policy [Policy Text Block]
Recently Issued Accounting Standards
New Accounting Pronouncements, Policy [Policy Text Block]
Net Periodic Benefit Cost
Schedule of Net Benefit Costs [Table Text Block]
Statement of Cash Flows [Abstract]
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities [Abstract]
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]
Net accretion of bond premium
Accretion (Amortization) of Discounts and Premiums, Investments
Depreciation and amortization
Depreciation, Depletion and Amortization
Net realized investment gains
Net cash flows from trading investments
Proceeds from (Payments for) Trading Securities, Short-term
Deferred income tax expense (benefit)
Deferred Income Tax Expense (Benefit)
Changes in:
Increase (Decrease) in Operating Capital [Abstract]
Accrued investment income
Increase (Decrease) in Accrued Investment Income Receivable
Premiums receivable
Increase (Decrease) in Premiums Receivable
Deferred policy acquisition costs
Increase Decrease in Deferred Policy Acquisition Cost and Value of Business Acquired
Increase (Decrease) in Deferred Policy Acquisition Cost and Value of Business Acquired
Reinsurance receivables
Increase (Decrease) in Reinsurance Recoverable
Prepaid reinsurance premiums
Increase (Decrease) in Prepaid Reinsurance Premiums
Income taxes receivable
Increase (Decrease) in Income Taxes Receivable
Other assets
Increase (Decrease) in Other Operating Assets
Future policy benefits and losses, claims and loss settlement expenses
Increase (Decrease) in Future Policy Benefit Reserves
Unearned premiums
Increase (Decrease) in Unearned Premiums
Accrued expenses and other liabilities
Increase (Decrease) In Accrued Expenses And Other Liabilities
Increase (Decrease) in Accrued expenses and other liabilities.
Deferred income taxes
Increase (Decrease) in Deferred Income Taxes
Other, net
Increase (Decrease) in Other Operating Liabilities
Total adjustments
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities
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]
Proceeds from sale of available-for-sale investments
Proceeds from call and maturity of held-to-maturity investments
Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities
Proceeds from call and maturity of available-for-sale investments
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities
Proceeds from short-term and other investments
Proceeds from Sale, Maturity and Collection of Short-term Investments
Purchase of available-for-sale investments
Payments to Acquire Available-for-sale Securities
Purchase of short-term and other investments
Payments to Acquire Short term and Other Investments
Payments to Acquire Short-term and Other Investments.
Net purchases and sales of property and equipment
Payments for (Proceeds from) Productive Assets
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Cash Flows From Financing Activities
Net Cash Provided by (Used in) Financing Activities [Abstract]
Policyholders’ account balances
Net Change Annuities and Investment Certificates [Abstract]
Deposits to investment and universal life contracts
Proceeds from Annuities and Investment Certificates
Withdrawals from investment and universal life contracts
Repayments of Annuities and Investment Certificates
Repayment of short-term debt
Repayments of Short-term Debt
Repayment of trust preferred securities
Repayments of Long-term Debt
Payment of cash dividends
Payments of Dividends
Repurchase of common stock
Payments for Repurchase of Common Stock
Issuance of common stock
Proceeds from Issuance of Common Stock
Tax impact from issuance of common stock
Excess Tax Benefit from Share-based Compensation, Financing Activities
Net cash used in financing activities
Net Cash Provided by (Used in) Financing Activities
Net Change in Cash and Cash Equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and Cash Equivalents at Beginning of Period
Cash and Cash Equivalents at End of Period
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale fixed maturities
Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss) before Taxes
Equity securities
Equity Securities, Change in Net Unrealized Holding Gain (Loss), Before Tax
Equity Securities, Change in Net Unrealized Holding Gain (Loss), Before Tax
Deferred policy acquisition costs
Income tax effect
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax
Total change in net unrealized investment appreciation, net of tax
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax
Accumulated Other Comprehensive Income
Comprehensive Income (Loss) Note [Text Block]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Equities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [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
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Unrealized losses
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)
Purchases
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Disposals
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Ending Balance
Available-for-sale Securities in Unrealized Loss Positions, Less than Twelve Months, Number of Issues
Available-for-sale, Securities in Unrealized Loss Positions, Less than Twelve Months, Number of Issues
Available-for-sale, Securities in Unrealized Loss Positions, Less than Twelve Months, Number of Issues
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Depreciation
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses, Accumulated In Investments
Amount of accumulated pre-tax unrealized loss on investments in availale-for-sale securities that have been in a loss position for less than twelve months impacting investments
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Number of Issues
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Number of Issues
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Number of Issues
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Gross Unrealized Depreciation
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss, Accumulated in Investments
Amount of accumulated pre-tax unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer impacting investments
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Depreciation
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Accumulated in Investments
Amount of accumulated pre-tax unrealized loss on securities classified as available-for-sale impacting investments.
Held-To-Maturity, Due in One Year or Less, Amortized Cost
Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount
Held-To-Maturity, Due in One Year or Less, Fair Value
Held-to-maturity Securities, Debt Maturities, Next Twelve Months, Fair Value
Available-For-Sale, Due in One Year or Less, Amortized Cost
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis
Available-For-Sale, Due in One Year or Less, Fair Value
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value
Trading, Due in One Year or Less, Amortized Cost
Trading Securities, Debt Maturities, within One Year, Amortized Cost Basis
Trading Securities, Debt Maturities, within One Year, Amortized Cost Basis
Trading, Due in One Year or Less, Fair Value
Trading Securities, Debt Maturities, within One Year, Fair Value
Trading Securities, Debt Maturities, within One Year, Fair Value
Held-To-Maturity, Due after One Year through Five Years, Amortized Cost
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount
Held-To-Maturity, Due after One Year through Five Years, Fair Value
Held-to-maturity Securities, Debt Maturities, Year Two Through Five, Fair Value
Available-For-Sale, Due after One Year through Five Years, Amortized Cost
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis
Available-For-Sale, Due after One Year through Five Years, Fair Value
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value
Trading, Due after One Year through Five Years, Amortized Cost
Trading Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis
Trading Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis
Trading, Due after One Year through Five Years, Fair Value
Trading Securities, Debt Maturities, after One Through Five Years, Fair Value
Trading Securities, Debt Maturities, after One Through Five Years, Fair Value
Held-To-Maturity, Due after Five Years through Ten Years, Amortized Cost
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount
Held-To-Maturity, Due after Five Years through Ten Years, Fair Value
Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value
Available-For-Sale, Due after Five Years through Ten Years, Amortized Cost
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis
Available-For-Sale, Due after Five Years through Ten Years, Fair Value
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value
Trading, Due after Five Years through Ten Years, Amortized Cost
Trading Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis
Trading Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis
Trading, Due after Five Years through Ten Years, Fair Value
Trading Securities, Debt Maturities, after Five Through Ten Years, Fair Value
Trading Securities, Debt Maturities, after Five Through Ten Years, Fair Value
Held-To-Maturity, Due after Ten Years, Amortized Cost
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount
Held-To-Maturity, Due after Ten Years, Fair Value
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value
Available-For-Sale, Due after Ten Years, Amortized Cost
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis
Available-For-Sale, Due after Ten Years, Fair Value
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value
Trading, Due after Ten Years, Amortized Cost
Trading Securities, Debt Maturities, after Ten Years, Amortized Cost Basis
Trading Securities, Debt Maturities, after Ten Years, Amortized Cost Basis
Trading, Due after Ten Years, Fair Value
Trading Securities, Debt Maturities, after Ten Years, Fair Value
Trading Securities, Debt Maturities, after Ten Years, Fair Value
Held-To-Maturity, Not Categorized by Contractual Maturity, Amortized Cost
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount
Held-To-Maturity, Not Categorized by Contractual Maturity, Fair Value
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value
Available-For-Sale, Not Categorized by Contractual Maturity, Amortized Cost
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis
Available-For-Sale, Not Categorized by Contractual Maturity, Fair Value
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value
Held-To-Maturity, Amortized Cost
Available-For-Sale, Amortized Cost
Trading, Amortized Cost
Trading Securities, Fair Value
Activity in Stock Award Plans
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
Remaining Stock-Based Compensation Expense
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]