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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Amortization	$ (1,167)	$ (1,610)	$ (3,519)	$ (3,934)
Core Deposits [Member]
Balance at beginning of period	13,442	16,870	14,958	5,596
Core deposit intangible acquired	0	0	0	12,724
Amortization	(749)	(956)	(2,265)	(2,406)
Balance at end of period	12,693	15,914	12,693	15,914
Customer Lists [Member]
Balance at beginning of period	9,196	13,487	10,032	0
Core deposit intangible acquired	0	0	0	14,360
Amortization	(418)	(654)	(1,254)	(1,527)
Balance at end of period	$ 8,778	$ 12,833	$ 8,778	$ 12,833