Note 5 - Core Deposit and Customer List Intangible Assets - Changes in the Net Carrying Amount of Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Amortization	$ (1,052)	$ (1,167)	$ (3,155)	$ (3,519)
Core Deposits [Member]
Balance at beginning of period	10,601	13,442	11,944	14,958
Amortization	(672)	(749)	(2,015)	(2,265)
Balance at end of period	9,929	12,693	9,929	12,693
Customer Lists [Member]
Balance at beginning of period	7,600	9,196	8,360	10,032
Amortization	(380)	(418)	(1,140)	(1,254)
Balance at end of period	$ 7,220	$ 8,778	$ 7,220	$ 8,778