Note 4 - Loans - Individual Evaluation Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Individual evaluated loans	$ 4,575	$ 0
Commercial Real Estate Portfolio Segment [Member] \| Construction and Land [Member]
Individual evaluated loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Multifamily [Member]
Individual evaluated loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Individual evaluated loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [member]
Individual evaluated loans	4,575	0
Commercial Real Estate Portfolio Segment [Member] \| Farmland Loans [Member]
Individual evaluated loans	0	0
Commercial Portfolio Segment [Member]
Individual evaluated loans	0	0
Consumer Portfolio Segment [Member]
Individual evaluated loans	0	0
Agriculture [Member]
Individual evaluated loans	$ 0	$ 0