Note 5 - Core Deposit and Customer List Intangible Assets - Changes in the Net Carrying Amount of Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Amortization	$ (1,172)	$ (1,611)	$ (2,352)	$ (2,324)
Core Deposits [Member]
Balance at beginning of period	14,196	17,826	14,958	5,596
Core deposit intangible acquired	0	0	0	12,724
Provisional period adjustments	0	0	0	0
Amortization	(754)	(956)	(1,516)	(1,450)
Balance at end of period	13,442	16,870	13,442	16,870
Customer Lists [Member]
Balance at beginning of period	9,614	14,142	10,032	0
Core deposit intangible acquired	0	0	0	14,360
Provisional period adjustments	0	0	0	0
Amortization	(418)	(655)	(836)	(873)
Balance at end of period	$ 9,196	$ 13,487	$ 9,196	$ 13,487