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v2.4.1.9

Investments (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Components of net investment income |  |  |
Total investment income | $ 338,293 us-gaap_InterestAndDividendIncomeOperating | $ 321,866 us-gaap_InterestAndDividendIncomeOperating | $ 313,857 us-gaap_InterestAndDividendIncomeOperating
Investment expenses | (8,478)us-gaap_InvestmentIncomeInvestmentExpense | (8,256)us-gaap_InvestmentIncomeInvestmentExpense | (7,854)us-gaap_InvestmentIncomeInvestmentExpense
Net investment income | 329,815 us-gaap_NetInvestmentIncome | 313,610 us-gaap_NetInvestmentIncome | 306,003 us-gaap_NetInvestmentIncome
Fixed maturities [Member] |  |  |
Components of net investment income |  |  |
Total investment income | 317,756 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedMaturitiesMember | 304,024 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedMaturitiesMember | 297,042 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedMaturitiesMember
Equity securities [Member] |  |  |
Components of net investment income |  |  |
Total investment income | 4,849 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember | 3,698 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember | 2,814 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember
Short-term and other investments [Member] |  |  |
Components of net investment income |  |  |
Total investment income | 8,459 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = hmn_ShortTermAndOtherInvestmentsMember | 8,242 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = hmn_ShortTermAndOtherInvestmentsMember | 8,109 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = hmn_ShortTermAndOtherInvestmentsMember
Other invested asset [Member] |  |  |
Components of net investment income |  |  |
Total investment income | $ 7,229 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = hmn_OtherInvestedAssetMember | $ 5,902 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = hmn_OtherInvestedAssetMember | $ 5,892 us-gaap_InterestAndDividendIncomeOperating / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = hmn_OtherInvestedAssetMember

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- Definition Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.1-5) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1, 2 , 3, 4, 5 -Article 9 + Details
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