Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Metro Phoenix Bank [Member] Common Stock [Member]	Metro Phoenix Bank [Member] Additional Paid-in Capital [Member]	Metro Phoenix Bank [Member] Retained Earnings [Member]	Metro Phoenix Bank [Member] AOCI Attributable to Parent [Member]	Metro Phoenix Bank [Member]	HMN Financial Inc. (HNMF) [Member] Common Stock [Member]	HMN Financial Inc. (HNMF) [Member] Additional Paid-in Capital [Member]	HMN Financial Inc. (HNMF) [Member] Retained Earnings [Member]	HMN Financial Inc. (HNMF) [Member] AOCI Attributable to Parent [Member]	HMN Financial Inc. (HNMF) [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]		Total
Balance at Dec. 31, 2021																					$ 17,213	$ 92,878	$ 253,567	$ (4,255)	[1]	$ 359,403
Net Income																					0	0	40,005	0		40,005
Other comprehensive income (loss)																					0	0	0	(94,386)	[1]	(94,386)
Common stock repurchased																					(26)	(712)	0	0		(738)
Common stock dividends																					0	0	(13,146)	0		(13,146)
Stock issuance from the acquisition of Metro Phoenix Bank	$ 2,681	$ 61,149	$ 0	$ 0	$ 63,830
Share-based compensation expense																					10	1,894		0		1,904
Vesting of restricted stock																					114	(114)	0	0		0
Balance at Dec. 31, 2022											$ 0	$ 0	$ (4,452)	$ 0	$ (4,452)	$ 19,992	$ 155,095	$ 275,974	$ (98,641)	$ 352,420	19,992	155,095	280,426	(98,641)	[1]	356,872
Net Income																					0	0	11,696	0		11,696
Other comprehensive income (loss)																					0	0	0	24,986	[1]	24,986
Common stock repurchased																					(375)	(6,263)	0	0		(6,638)
Common stock dividends																					0	0	(14,965)	0		(14,965)
Share-based compensation expense																					18	1,610		0		1,628
Vesting of restricted stock																					99	(99)	0	0		0
Balance at Dec. 31, 2023																$ 19,734	$ 150,343	$ 272,705	$ (73,655)	$ 369,127				(73,655)	[1]	369,127
Net Income																					0	0	17,780	0		17,780
Other comprehensive income (loss)																					0	0	0	289	[1]	289
Common stock repurchased																					(9)	(267)	0	0		(276)
Common stock dividends																					0	0	(16,762)	0		(16,762)
Stock issuance from the acquisition of Metro Phoenix Bank						$ 5,548	$ 118,054	$ 0	$ 0	$ 123,602
Share-based compensation expense																					0	1,650	0	0		1,650
Vesting of restricted stock																					72	(72)	0	0		0
Balance at Dec. 31, 2024																					$ 25,345	$ 269,708	$ 273,723	$ (73,366)	[1]	$ 495,410

[1] All amounts net of tax.