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Summary of Significant Accounting Policies (Details 4) (Guaranteed Minimum Death Benefit [Member], USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Guaranteed Minimum Death Benefit [Member] |  |
Summary of guaranteed minimum death benefit |  |
GMDB reserve | $ 278 hmn_GuaranteedMinimumDeathBenefitReserve / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember | $ 209 hmn_GuaranteedMinimumDeathBenefitReserve / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember
Aggregate in-the-money death benefits under the GMDB provision | $ 29,866 hmn_AggregateInMoneyDeathBenefitsUnderGuaranteedMinimumDeathBenefitReserveProvision / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember | $ 30,422 hmn_AggregateInMoneyDeathBenefitsUnderGuaranteedMinimumDeathBenefitReserveProvision / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember
Variable annuity contract value distribution based on GMDB feature: |  |
No guarantee | 31.00%hmn_VariableAnnuityContractValueDistributionNoGuaranteePercent / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember | 30.00%hmn_VariableAnnuityContractValueDistributionNoGuaranteePercent / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember
Return of premium guarantee | 63.00%hmn_VariableAnnuityContractValueDistributionReturnOfPremiumGuaranteePercent / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember | 64.00%hmn_VariableAnnuityContractValueDistributionReturnOfPremiumGuaranteePercent / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember
Guarantee of premium roll-up at an annual rate of 3% or 5% | 6.00%hmn_VariableAnnuityContractValueDistributionGuaranteeOfPremiumRollUpAnnualInterestRate / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember | 6.00%hmn_VariableAnnuityContractValueDistributionGuaranteeOfPremiumRollUpAnnualInterestRate / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember
Total | 100.00%hmn_VariableAnnuityContractValueDistributionPercent / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember | 100.00%hmn_VariableAnnuityContractValueDistributionPercent / us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis = us-gaap_GuaranteedMinimumDeathBenefitMember

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- Definition Aggregate in money death benefits under guaranteed minimum death benefit reserve provision. + References No definition available. + Details
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- Definition Guaranteed minimum death benefit reserve. + References No definition available. + Details
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- Details
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- Definition Variable annuity contract value distribution guarantee of premium roll up annual interest rate. + References No definition available. + Details
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- Definition Variable annuity contract value distribution no guarantee percent. + References No definition available. + Details
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- Definition Variable annuity contract value distribution return of premium guarantee percent. + References No definition available. + Details
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Balance Type: | na
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