Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2024	Apr. 29, 2024
Document Information [Line Items]
Entity Central Index Key	0000921183
Entity Registrant Name	HMN FINANCIAL INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2024
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	0-24100
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	41-1777397
Entity Address, Address Line One	1016 Civic Center Drive N.W.
Entity Address, City or Town	Rochester
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55901
City Area Code	507
Local Phone Number	535-1200
Title of 12(b) Security	Common Stock
Trading Symbol	HMNF
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		4,464,952