XML 52 R36.htm IDEA: XBRL DOCUMENT v3.5.0.2

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
U.S. Government and federally sponsored agency obligations:
Carrying Amount	$ 7,774,028	$ 7,379,290
Fair Value	7,774,028	7,379,290
Investment contract and life policy reserves, embedded derivatives, Carrying Amount	50	14
Investment contract and life policy reserves, embedded derivatives, Fair Value Disclosure	50	14
Other policyholder funds, embedded derivatives, Carrying Amount	47,706	39,021
Other policyholder funds, embedded derivatives, Fair Value Disclosure	47,706	39,021
Recurring [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	7,481,712	7,091,340
Fair Value	7,481,712	7,091,340
Short-term investments [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	153,328	174,152
Fair Value	153,328	174,152
Mortgage-backed securities [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	510,304	504,414
Fair Value	510,304	504,414
Other, including U.S. Treasury Securities [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	548,512	546,111
Fair Value	548,512	546,111
Municipal bonds [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	1,745,764	1,708,943
Fair Value	1,745,764	1,708,943
Foreign government bonds [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	79,094	73,617
Fair Value	79,094	73,617
Corporate bonds [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	2,887,186	2,779,415
Fair Value	2,887,186	2,779,415
Other mortgage-backed securities [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	1,710,852	1,478,840
Fair Value	1,710,852	1,478,840
Equity securities [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	123,163	99,797
Fair Value	123,163	99,797
Other investments [Member]
U.S. Government and federally sponsored agency obligations:
Carrying Amount	15,825	14,001
Fair Value	15,825	14,001
Level 1 [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	285,027	280,305
Investment contract and life policy reserves, embedded derivatives, Fair Value Disclosure	0	0
Other policyholder funds, embedded derivatives, Fair Value Disclosure	0	0
Level 1 [Member] | Recurring [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	22,858	24,453
Level 1 [Member] | Short-term investments [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	152,830	169,764
Level 1 [Member] | Mortgage-backed securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	0	0
Level 1 [Member] | Other, including U.S. Treasury Securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	13,985	14,258
Level 1 [Member] | Municipal bonds [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	0	0
Level 1 [Member] | Foreign government bonds [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	0	0
Level 1 [Member] | Corporate bonds [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	8,873	10,195
Level 1 [Member] | Other mortgage-backed securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	0	0
Level 1 [Member] | Equity securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	109,339	86,088
Level 1 [Member] | Other investments [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	0	0
Level 2 [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	7,271,359	6,925,559
Investment contract and life policy reserves, embedded derivatives, Fair Value Disclosure	50	14
Other policyholder funds, embedded derivatives, Fair Value Disclosure	0	0
Level 2 [Member] | Recurring [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	7,241,218	6,893,467
Level 2 [Member] | Short-term investments [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	498	4,388
Level 2 [Member] | Mortgage-backed securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	506,474	504,414
Level 2 [Member] | Other, including U.S. Treasury Securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	534,527	531,853
Level 2 [Member] | Municipal bonds [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	1,698,117	1,678,564
Level 2 [Member] | Foreign government bonds [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	79,094	73,617
Level 2 [Member] | Corporate bonds [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	2,804,905	2,701,645
Level 2 [Member] | Other mortgage-backed securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	1,618,101	1,403,374
Level 2 [Member] | Equity securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	13,818	13,703
Level 2 [Member] | Other investments [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	15,825	14,001
Level 3 [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	217,642	173,426
Investment contract and life policy reserves, embedded derivatives, Fair Value Disclosure	0	0
Other policyholder funds, embedded derivatives, Fair Value Disclosure	47,706	39,021
Level 3 [Member] | Recurring [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	217,636	173,420
Level 3 [Member] | Short-term investments [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	0	0
Level 3 [Member] | Mortgage-backed securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	3,830	0
Level 3 [Member] | Other, including U.S. Treasury Securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	0	0
Level 3 [Member] | Municipal bonds [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	47,647	30,379
Level 3 [Member] | Foreign government bonds [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	0	0
Level 3 [Member] | Corporate bonds [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	73,408	67,575
Level 3 [Member] | Other mortgage-backed securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	92,751	75,466
Level 3 [Member] | Equity securities [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	6	6
Level 3 [Member] | Other investments [Member]
U.S. Government and federally sponsored agency obligations:
Fair Value	$ 0	$ 0

X

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities.

+ References

No definition available.

+ Details

Name:	hmn_AvailableForSaleSecuritiesFairValue
Namespace Prefix:	hmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Carrying amount of accrued obligation to policyholders that relates to insured events under other insurance contracts.

+ References

No definition available.

+ Details

Name:	hmn_LiabilityForFuturePolicyBenefitsDerivativeInstrumentsCarryingAmount
Namespace Prefix:	hmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Fair value disclosure of accrued obligation to policyholders that relates to insured events under other insurance contracts.

+ References

No definition available.

+ Details

Name:	hmn_LiabilityForFuturePolicyBenefitsDerivativeInstrumentsFairValueDisclosure
Namespace Prefix:	hmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Carrying amount liability as of the policyholders for funds held that are returnable under the terms of insurance contracts that were not separately reported.

+ References

No definition available.

+ Details

Name:	hmn_OtherPolicyholderFundsDerivativeInstrumentsCarryingAmount
Namespace Prefix:	hmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Fair value of the liability as of the policyholders for funds held that are returnable under the terms of insurance contracts that were not separately reported.

+ References

No definition available.

+ Details

Name:	hmn_OtherPolicyholderFundsDerivativeInstrumentsFairValueDisclosure
Namespace Prefix:	hmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

U.S. government and federally sponsored agency obligations.

+ References

No definition available.

+ Details

Name:	hmn_UsGovernmentAndFederallySponsoredAgencyObligationsAbstract
Namespace Prefix:	hmn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562

+ Details

Name:	us-gaap_AvailableForSaleSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=hmn_OtherIncludingUsTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_MunicipalBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_ForeignGovernmentDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_MortgageBackedSecuritiesOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=hmn_OtherInvestmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: