Note 1 - HMN Financial, Inc. (Details)	9 Months Ended
Sep. 30, 2015
Disclosure Text Block [Abstract]
Percentage of Ownership in Subsidiaries	100.00%
Number of Wholly Owned Subsidiaries	2

The percentage of ownership of common stock or equity participation in the subsidiary.

No definition available.

Name:	hmnf_PercentageOfOwnershipInSubsidiaries
Namespace Prefix:	hmnf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration