Note 4 - Allowance for Credit Losses- Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Loans	$ 1,487,398	$ 1,449,745	$ 1,443,022
Real Estate 1 [Member] \| Construction and Land Development [Member]
Loans	113,289	88,424	78,169
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member]
Loans	522,763	527,283	$ 544,162
Real Estate [Member] \| Real Estate 1 [Member]
Loans	480	650
Real Estate [Member] \| Real Estate 1 [Member] \| Construction and Land Development [Member]
Loans	18	18
Real Estate [Member] \| Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member]
Loans	462	632
Non Real Estate [Member] \| Real Estate 1 [Member]
Loans	0	0
Non Real Estate [Member] \| Real Estate 1 [Member] \| Construction and Land Development [Member]
Loans	0	0
Non Real Estate [Member] \| Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member]
Loans	0	0
Collateral Pledged [Member] \| Real Estate 1 [Member]
Loans	480	650
Collateral Pledged [Member] \| Real Estate 1 [Member] \| Construction and Land Development [Member]
Loans	18	18
Collateral Pledged [Member] \| Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member]
Loans	$ 462	$ 632