Note 7 - INCOME TAXES - Reconciliation of the Expected Federal Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
INCOME TAXES
Computed "expected" tax expense	$ 7,165	$ 8,293	$ 16,130	$ 18,512
Tax exempt income, net	(3,003)	(2,032)	(7,701)	(5,553)
Bank-owned life insurance	(127)	(93)	(273)	(287)
State income taxes, net of federal benefit, current year	1,616	1,799	3,889	4,070
Provision adjustment from accounting method change			1,181
Tax Credits	(359)	(57)	(890)	(171)
Income from tax credit equity investments	337	3	939	8
Acquisition costs	78		450
Excess tax benefit on stock options exercised and restricted stock awards vested	(46)	(107)	(520)	(311)
Other	(163)	129	(316)	6
Federal and state income tax expense	$ 4,824	$ 7,929	$ 8,649	$ 16,258
Computed "expected" tax expense (in percentage)	21.00%	21.00%	21.00%	21.00%
Tax exempt income, net (in percentage)	(8.80%)	(5.10%)	(10.00%)	(6.30%)
Bank-owned life insurance (in percentage)	(0.40%)	(0.20%)	(0.40%)	(0.30%)
State income taxes, net of federal benefit, current year (in percentage)	4.70%	4.60%	5.10%	4.60%
Provision adjustment from accounting method change (in percentage)			(1.50%)
Tax credits (in percentage)	(1.10%)	(0.10%)	(1.20%)	(0.20%)
Income from tax credit equity investments (in percentage)	1.00%		1.20%
Acquisition costs (in percentage)	0.20%		0.60%
Excess tax benefit on stock options exercised and restricted stock awards vested (in percentage)	(0.10%)	(0.30%)	(0.70%)	(0.40%)
Other (in percentage)	(0.50%)	0.20%	(0.40%)
Federal and state income tax expense (in percentage)	14.10%	20.10%	11.30%	18.40%