Note 6 - 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, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Amortization	$ (1,610)	$ (290)	$ (3,934)	$ (494)
Core Deposits [Member]
Balance at beginning of period	16,870	5,162	5,596	1,962
Intangible acquired	0	0	12,724	3,404
Provisional period adjustments	0	999	0	999
Amortization	(956)	(290)	(2,406)	(494)
Balance at end of period	15,914	5,871	15,914	5,871
Customer Lists [Member]
Balance at beginning of period	13,487	0	0	0
Intangible acquired	0	0	14,360	0
Provisional period adjustments	0	0	0	0
Amortization	(654)	0	(1,527)	0
Balance at end of period	$ 12,833	$ 0	$ 12,833	$ 0