Note 13 - Employee Benefits (Details) - Stock Options Outstanding (USD $)	12 Months Ended
Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number Outstanding	30,000
Number Exercisable	30,000
Number Unexercisable	0hmnf_NumberUnexercisable1
Unrecognized Compensation Expens (in Dollars)	$ 0
Exercise Price One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars)	30.00
Number Outstanding	15,000
Weighted Average Remaining Contractual Life in Years	146 days
Number Exercisable	15,000
Number Unexercisable	0
Unrecognized Compensation Expens (in Dollars)	0
Weighted Average Years Over Which Unrecognized Compensation will be Recognized
Exercise Price Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars)	4.77
Number Outstanding	15,000
Weighted Average Remaining Contractual Life in Years	4 years 146 days
Number Exercisable	15,000
Number Unexercisable	0
Unrecognized Compensation Expens (in Dollars)	$ 0
Weighted Average Years Over Which Unrecognized Compensation will be Recognized

Unexercisable number of shares

No definition available.

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Data Type:	xbrli:sharesItemType
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- Definition

Exercise price .

+ References

No definition available.

+ Details

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Namespace Prefix:	hmnf_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted Average Years Over Which Unrecognized Compensation will be Recognized

+ References

No definition available.

+ Details

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

No definition available.

+ Details

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- Details

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Balance Type:	na
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- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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