Note 16 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Collateral dependent loans	$ 1,434	$ 5,290
Foreclosed assets	200
Total	1,634
Fair Value, Inputs, Level 1 [Member]
Collateral dependent loans	0	0
Foreclosed assets	0
Total	0
Fair Value, Inputs, Level 2 [Member]
Collateral dependent loans	0	0
Foreclosed assets	0
Total	0
Fair Value, Inputs, Level 3 [Member]
Collateral dependent loans	1,434	$ 5,290
Foreclosed assets	200
Total	$ 1,634