Note 8 - Core Deposit and Customer List Intangible Assets - Changes in the Net Carrying Amount of Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amortized to expense	$ (4,686)	$ (5,544)	$ (770)
Core Deposits [Member]
Balance at beginning of period	14,958	5,596	1,962
Added from acquisition	0	12,724	3,405
Provisional period adjustment	0	0	999
Amortized to expense	(3,014)	(3,362)	(770)
Balance at end of period	11,944	14,958	5,596
Customer Lists [Member]
Balance at beginning of period	10,032	0
Added from acquisition	0	14,360
Provisional period adjustment	0	0
Amortized to expense	(1,672)	(2,182)
Balance at end of period	8,360	10,032	$ 0
Disposition of LFA	$ 0	$ (2,146)