Note 3 - Business Combinations - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Oct. 09, 2024	Jul. 01, 2022	Dec. 31, 2024	Dec. 31, 2023
Goodwill			$ 85,634	$ 46,783
Metro Phoenix Bank [Member]
Cash and cash equivalents		$ 101,696
Fed funds sold		18,936
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans		270,403
Accrued interest receivable		1,091
Other assets		3,530
Total assets		403,248
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits		353,685
Other liabilities		673
Total liabilities		354,358
Excess assets over liabilities		48,890
Stock issued for MPB		64,019
Goodwill		15,129
Net loans		270,403
Stock issued for HMNF		64,019
Metro Phoenix Bank [Member] | Core Deposits [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		7,592
Metro Phoenix Bank [Member] | Reported Value by Acquiree [Member]
Cash and cash equivalents		101,819
Fed funds sold		18,936
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans		273,843
Accrued interest receivable		1,091
Other assets		3,342
Total assets		399,031
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits		354,529
Other liabilities		673
Total liabilities		355,202
Excess assets over liabilities		43,829
Net loans		273,843
Metro Phoenix Bank [Member] | Reported Value by Acquiree [Member] | Core Deposits [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		0
Metro Phoenix Bank [Member] | Fair Value Adjustments [Member]
Cash and cash equivalents		(123)
Fed funds sold		0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans		(3,440)
Accrued interest receivable		0
Other assets		188
Total assets		4,217
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits		(844)
Other liabilities		0
Total liabilities		(844)
Excess assets over liabilities		5,061
Net loans		(3,440)
Metro Phoenix Bank [Member] | Fair Value Adjustments [Member] | Core Deposits [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 7,592
HMN Financial Inc. (HNMF) [Member]
Cash and cash equivalents	$ 8,610
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	33,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans	785,439
Accrued interest receivable	3,030
Other assets	3,936
Total assets	1,063,872
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	957,849
Other liabilities	18,212
Total liabilities	979,117
Excess assets over liabilities	84,755
Stock issued for MPB	123,602
Goodwill	38,851
Investment securities available-for-sale	189,167
Loans held for sale	1,057
Net loans	785,439
Land premises and equipment, net	18,028
Operating lease right-of-use assets	1,256
Servicing rights	5,445
Deferred income taxes, net	14,404
Short-term borrowings	1,600
Operating lease liabilities	1,456
Stock issued for HMNF	123,602
Cash paid for HMNF	4
HMN Financial Inc. (HNMF) [Member] | Reported Value by Acquiree [Member]
Cash and cash equivalents	8,610
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans	856,164
Accrued interest receivable	3,030
Other assets	4,623
Total assets	1,089,527
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	957,627
Other liabilities	22,646
Total liabilities	982,977
Excess assets over liabilities	106,550
Investment securities available-for-sale	189,145
Loans held for sale	1,057
Net loans	856,164
Land premises and equipment, net	15,932
Operating lease right-of-use assets	1,070
Servicing rights	2,662
Deferred income taxes, net	7,234
Short-term borrowings	1,600
Operating lease liabilities	1,104
HMN Financial Inc. (HNMF) [Member] | Reported Value by Acquiree [Member] | Core Deposits [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	0
HMN Financial Inc. (HNMF) [Member] | Fair Value Adjustments [Member]
Cash and cash equivalents	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	33,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans	(70,725)
Accrued interest receivable	0
Other assets	(687)
Total assets	(25,655)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	222
Other liabilities	(4,434)
Total liabilities	(3,860)
Excess assets over liabilities	(21,795)
Investment securities available-for-sale	22
Loans held for sale	0
Net loans	(70,725)
Land premises and equipment, net	2,096
Operating lease right-of-use assets	186
Servicing rights	2,783
Deferred income taxes, net	7,170
Short-term borrowings	0
Operating lease liabilities	$ 352