Note 22 - Assets and Liabilities Measured and Reported at Fair Value - Assets Measured at Fair Value on a Non-recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other real estate owned, gain (loss)	$ (43)	$ 46	$ 163
Fair Value, Nonrecurring [Member]
Collateral dependent loans, fair value	0	0	0
Collateral dependent loans	1,681	303	891
Other real estate owned, fair value	0	0	0
Other real estate owned, gain (loss)	25	0	17
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Collateral dependent loans, fair value	0	0	0
Other real estate owned, fair value	0	0	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Collateral dependent loans, fair value	13,561	20,637	4,487
Other real estate owned, fair value	10	677	7,212
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Collateral dependent loans, fair value	13,561	20,637	4,487
Other real estate owned, fair value	$ 10	$ 677	$ 7,212