Investments (Details 8) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Asset derivatives:
Derivative Asset, Fair Value, Gross Amounts	$ 2,458
Derivatives Asset, Gross Amounts Offset in the Consolidated Balance Sheet	0hmn_DerivativeAssetGrossValueOffset
Derivatives Asset, Net Amounts of Assets\Liabilities Presented in the Consolidated Balance Sheet	2,458hmn_DerivativeAssetNetValueOffset
Derivatives Asset, Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments	0
Derivatives Asset, Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received	1,955
Derivatives Asset, Net Amount	$ 503

Derivative Asset Gross Value Offset

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- Definition

Derivative Asset Net Value Offset

+ References

No definition available.

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- Definition

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

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