Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets
Unearned premium reserve reduction	$ 15,721	$ 15,555
Compensation accruals	14,765	13,188
Other comprehensive income - net funded status of pension and other postretirement benefit obligations	7,009	6,376
Discounting of unpaid claims and claim expense tax reserves	4,090	4,747
Impaired securities	3,327	1,800
Postretirement benefits other than pensions	870	2,048
Total gross deferred tax assets	45,782us-gaap_DeferredTaxAssetsGross	43,714us-gaap_DeferredTaxAssetsGross
Deferred tax liabilities
Other comprehensive income - net unrealized gains on fixed maturities and equity securities	185,011	81,497
Deferred policy acquisition costs	70,796	80,159
Life insurance future policy benefit reserve	25,914	21,792
Investment related adjustments	20,064	18,317
Intangible assets	4,262	4,262
Other, net	1,519us-gaap_DeferredTaxLiabilitiesOther	900us-gaap_DeferredTaxLiabilitiesOther
Total gross deferred tax liabilities	307,566us-gaap_DeferredIncomeTaxLiabilities	206,927us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax liability	$ 261,784us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 163,213us-gaap_DeferredTaxAssetsLiabilitiesNet

Deferred tax assets tax deferred expense compensation and benefits pensions and post retirement benefits.

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Deferred tax liabilities investments net unrealized gains on fixed maturities and equity securities.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from postretirement benefits.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated impairment losses.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from loss reserves other than estimated credit losses.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the unearned premiums reserve.

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Amount of deferred tax liability attributable to taxable temporary differences from capitalized costs.

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The amount as of the balance sheet date of the estimated future tax effects attributable to policy acquisition costs being expensed for tax purposes but capitalized in conformity with generally accepted accounting principles, which will reverse in future periods when amortization of such capitalized costs cannot be deducted for tax purposes.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments).

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Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed.

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