Note 5 - Core Deposit and Customer List Intangible Assets - Changes in the Net Carrying Amount of Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Amortization	$ (1,052)	$ (1,180)
Core Deposits [Member]
Balance at beginning of period	11,944	14,958
Amortization	(672)	(762)
Balance at end of period	11,272	14,196
Customer Lists [Member]
Balance at beginning of period	8,360	10,032
Amortization	(380)	(418)
Balance at end of period	$ 7,980	$ 9,614