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v2.4.1.9

Income Taxes (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Income tax (asset) liability |  |
Current | $ (1,195)hmn_CurrentIncomeTaxAssetsLiabilities | $ (1,998)hmn_CurrentIncomeTaxAssetsLiabilities
Deferred | $ 261,784 hmn_DeferredIncomeTaxAssetsLiabilities | $ 163,213 hmn_DeferredIncomeTaxAssetsLiabilities

X
- Definition Current income tax assets liabilities. + References No definition available. + Details
Name: | hmn_CurrentIncomeTaxAssetsLiabilities
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Deferred income tax assets liabilities. + References No definition available. + Details
Name: | hmn_DeferredIncomeTaxAssetsLiabilities
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | hmn_IncomeTaxAssetLiabilityAbstract
Namespace Prefix: | hmn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration