Note 5 - Credit Quality - Loans Modified as Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Financial Asset, Not Past Due [Member]
Loans modified	$ 2,456	$ 2,000
Financial Asset, 30 to 89 Days Past Due [Member]
Loans modified	937	421
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans modified	42	21
Single Family Owner Occupied [Member] \| Financial Asset, Not Past Due [Member]
Loans modified	1,177	1,358
Single Family Owner Occupied [Member] \| Financial Asset, 30 to 89 Days Past Due [Member]
Loans modified	525	401
Single Family Owner Occupied [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans modified	42	21
Non-farm, Non-residential [Member] \| Financial Asset, Not Past Due [Member]
Loans modified	450
Non-farm, Non-residential [Member] \| Financial Asset, 30 to 89 Days Past Due [Member]
Loans modified	343	0
Non-farm, Non-residential [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans modified	0	0
Non-farm, Non-residential [Member] \| Financial Asset, Past Due [Member]
Loans modified		594
Commercial and Industrial [Member] \| Financial Asset, Not Past Due [Member]
Loans modified	579	44
Commercial and Industrial [Member] \| Financial Asset, 30 to 89 Days Past Due [Member]
Loans modified	49	0
Commercial and Industrial [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans modified	0	0
Consumer Loans [Member] \| Financial Asset, Not Past Due [Member]
Loans modified	14	4
Consumer Loans [Member] \| Financial Asset, 30 to 89 Days Past Due [Member]
Loans modified	20	0
Consumer Loans [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans modified	0	0
Agricultural [Member] \| Financial Asset, Not Past Due [Member]
Loans modified	222
Agricultural [Member] \| Financial Asset, 30 to 89 Days Past Due [Member]
Loans modified	0
Agricultural [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans modified	0
Single Family Non-owner Occupied [Member] \| Financial Asset, Not Past Due [Member]
Loans modified	14
Single Family Non-owner Occupied [Member] \| Financial Asset, 30 to 89 Days Past Due [Member]
Loans modified	0	20
Single Family Non-owner Occupied [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans modified	0	0
Single Family Non-owner Occupied [Member] \| Financial Asset, Past Due [Member]
Loans modified		0
Contractual Interest Rate Reduction [Member]
Amortized cost basis	86	89
Contractual Interest Rate Reduction [Member] \| Single Family Owner Occupied [Member]
Amortized cost basis	$ 86	$ 89
Percentage of total financing receivable	0.01%	0.01%
Interest rate after modification	1.95%
Contractual Interest Rate Reduction [Member] \| Single Family Owner Occupied [Member] \| Maximum [Member]
Interest rate after modification		3.15%
Contractual Interest Rate Reduction [Member] \| Single Family Owner Occupied [Member] \| Minimum [Member]
Interest rate after modification		1.95%
Contractual Interest Rate Reduction [Member] \| Commercial and Industrial [Member]
Interest rate after modification	2.00%
Contractual Interest Rate Reduction [Member] \| Consumer Loans [Member]
Interest rate after modification		10.50%
Payment Deferral [Member]
Amortized cost basis	$ 1,600	$ 1,273
Payment Deferral [Member] \| Single Family Owner Occupied [Member]
Amortized cost basis	$ 618	$ 647
Percentage of total financing receivable	0.09%	0.10%
Payment Deferral [Member] \| Non-farm, Non-residential [Member]
Amortized cost basis	$ 736	$ 594
Percentage of total financing receivable	0.08%	0.07%
Payment Deferral [Member] \| Commercial and Industrial [Member]
Amortized cost basis	$ 26
Percentage of total financing receivable	0.01%
Delayed period (Month)	6 months
Payment Deferral [Member] \| Agricultural [Member]
Amortized cost basis	$ 206
Percentage of total financing receivable	1.43%
Delayed period (Month)	6 months
Payment Deferral [Member] \| Single Family Non-owner Occupied [Member]
Amortized cost basis	$ 14	$ 20
Percentage of total financing receivable	0.01%	0.01%
Delayed period (Month)	6 months	6 months
Extended Maturity [Member]
Amortized cost basis	$ 396	$ 100
Extended Maturity [Member] \| Single Family Owner Occupied [Member]
Amortized cost basis	$ 67	$ 68
Percentage of total financing receivable	0.01%	0.01%
Extended term (Year)	10 years 6 months	10 years 6 months
Extended Maturity [Member] \| Commercial and Industrial [Member]
Amortized cost basis	$ 287	$ 32
Percentage of total financing receivable	0.10%	0.01%
Extended term (Year)	26 months
Extended Maturity [Member] \| Commercial and Industrial [Member] \| Maximum [Member]
Delayed period (Month)		46 months
Extended Maturity [Member] \| Commercial and Industrial [Member] \| Minimum [Member]
Delayed period (Month)		24 months
Extended Maturity [Member] \| Consumer Loans [Member]
Amortized cost basis	$ 26
Percentage of total financing receivable	0.05%
Extended term (Year)	10 months	10 months
Extended Maturity [Member] \| Agricultural [Member]
Amortized cost basis	$ 16
Percentage of total financing receivable	0.11%
Delayed period (Month)	8 months
Term Extension and Rate Reduction [Member]
Amortized cost basis	$ 1,353	$ 980
Term Extension and Rate Reduction [Member] \| Single Family Owner Occupied [Member]
Amortized cost basis	$ 973	$ 976
Percentage of total financing receivable	0.15%	0.15%
Term Extension and Rate Reduction [Member] \| Non-farm, Non-residential [Member]
Amortized cost basis	$ 57
Percentage of total financing receivable	0.01%
Term Extension and Rate Reduction [Member] \| Commercial and Industrial [Member]
Amortized cost basis	$ 315
Percentage of total financing receivable	0.11%
Term Extension and Rate Reduction [Member] \| Consumer Loans [Member]
Amortized cost basis	$ 8	$ 4
Percentage of total financing receivable	0.02%	0.01%
Interest Deferral [Member] \| Commercial and Industrial [Member]
Amortized cost basis		$ 12
Percentage of total financing receivable		0.01%
Delayed period (Month)		6 months

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Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

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Period of payment deferral of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

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Period of increase in weighted-average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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