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Note 4 - Loans and the Allowance for Credit Losses - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	$ 1,496,494	$ 1,015,424
Equipment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	60	245
Crops [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	4,872	535
Livestock [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	225
Farmland [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	2,307
Commercial 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	3,661	739
S F R 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	687	53
S F R 2nd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	524	825
Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	454
Collateral Pledged [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	12,790	2,447
SFR 3rd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		50
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	161,667	77,444
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Equipment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	60	245
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Crops [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Livestock [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Farmland [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Commercial 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | S F R 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	170	0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | S F R 2nd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Collateral Pledged [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	230	245
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | SFR 3rd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	154,107	118,866
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Equipment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Crops [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	4,872	535
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Livestock [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	225
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Farmland [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	2,307
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Commercial 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	2,241	0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | S F R 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	336	0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | S F R 2nd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	454
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Collateral Pledged [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	10,435	535
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | SFR 3rd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	980,694	646,378
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Equipment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Crops [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Livestock [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Farmland [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Commercial 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	1,420	739
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | S F R 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	30	53
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | S F R 2nd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	119	652
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Collateral Pledged [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	1,569	1,494
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | SFR 3rd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		50
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	49,199	53,503
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Equipment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Crops [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | S F R 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | S F R 2nd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Collateral Pledged [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | SFR 3rd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Residential Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	33,657	11,539
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Equipment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Crops [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Livestock [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Farmland [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Commercial 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | S F R 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	151	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | S F R 2nd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Collateral Pledged [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	151	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | SFR 3rd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	53,283	37,888
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Equipment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Crops [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Livestock [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Farmland [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Commercial 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0	0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | S F R 1st Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | S F R 2nd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	405	173
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	0
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Collateral Pledged [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	$ 405	173
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | SFR 3rd Deed [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process		$ 0

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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