Note 13 - Assets and Liabilities Measured and Reported at Fair Value - Assets Measured at Fair Value on a Non-recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Other real estate owned, gain (loss)			$ (0)	$ (250)
Fair Value, Nonrecurring [Member]
Collateral dependent loans	$ 7,165		7,165		$ 13,561
Collateral dependent loans, gain (loss)	245	$ 1,377	245	1,377
Other real estate owned	10		10		10
Other real estate owned, gain (loss)	0	$ 250	0	$ 250
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Collateral dependent loans	0		0		0
Other real estate owned	0		0		0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Collateral dependent loans	0		0		0
Other real estate owned	0		0		0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Collateral dependent loans	7,165		7,165		13,561
Other real estate owned	$ 10		$ 10		$ 10