Note 6 - Core Deposit and Customer List Intangible Assets - Changes in the Net Carrying Amount of Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Amortization	$ (1,180)	$ (713)
Core Deposits [Member]
Balance at beginning of period	14,958	5,596
Core deposit intangible acquired	0	12,724
Provisional period adjustments	0	0
Amortization	(762)	(494)
Balance at end of period	14,196	17,826
Customer Lists [Member]
Balance at beginning of period	10,032	0
Core deposit intangible acquired	0	14,360
Provisional period adjustments	0	0
Amortization	(418)	(218)
Balance at end of period	$ 9,614	$ 14,142