NOTE 6 - INCOME TAXES - Reconciliation of the Expected Federal Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
INCOME TAXES
U.S. federal statutory tax rate	$ 8,399	$ 8,517	$ 24,210	$ 20,419
State and local income taxes, net of federal income tax effect	$ 1,137	$ 1,407	$ 3,225	$ 2,751
Effective Income Tax Rate Reconciliation, State and Local Jurisdiction, Contribution Greater than 50 Percent, Tax Effect [Extensible Enumeration]	stpr:IA	stpr:IA	stpr:IA	stpr:IA
Tax credits
Low income housing tax credits	$ (1,060)	$ (696)	$ (3,098)	$ (2,208)
Other credits	(49)	(67)	(145)	(202)
Nontaxable or nondeductible items
Tax exempt income, net	(7,726)	(8,475)	(22,715)	(23,940)
Interest disallowance	2,947	3,578	8,668	10,020
Bank-owned life insurance	(186)	(200)	(596)	(520)
Meals and entertainment	37	25	102	70
Other	(193)	(156)	(597)	(446)
Changes in unrecognized tax benefits	324		693
Other adjustments
Excess tax benefit on stock options exercised and restricted stock awards vested	(92)	(111)	(777)	(637)
Provision adjustment			153	373
Other	24	22	94	24
Effective tax rate	$ 3,562	$ 3,844	$ 9,217	$ 5,704
U.S. federal statutory tax rate (in percentage)	21.00%	21.00%	21.00%	21.00%
State and local income taxes, net of federal income tax effect (in percentage)	2.80%	3.50%	2.80%	2.80%
Tax credits
Low income housing tax credits (in percentage)	(2.70%)	(1.70%)	(2.70%)	(2.30%)
Other credits (in percentage)	(0.10%)	(0.20%)	(0.10%)	(0.20%)
Nontaxable or nondeductible items
Tax exempt income, net (in percentage)	(19.30%)	(20.90%)	(19.70%)	(24.60%)
Interest disallowance (in percentage)	7.40%	8.80%	7.50%	10.30%
Bank-owned life insurance (in percentage)	(0.50%)	(0.50%)	(0.50%)	(0.50%)
Meals and entertainment (in percentage)	0.10%	0.10%	0.10%	0.10%
Other (in percentage)	(0.50%)	(0.40%)	(0.50%)	(0.50%)
Changes in unrecognized tax benefits (in percentage)	0.80%		0.60%
Other adjustments
Excess tax benefit on stock options exercised and restricted stock awards vested (in Percentage)	(0.20%)	(0.30%)	(0.70%)	(0.70%)
Provision adjustment (in percentage)			0.10%	0.50%
Other (in percentage)	0.10%	0.10%	0.10%	0.10%
Effective tax rate (in percentage)	8.90%	9.50%	8.00%	6.00%
Tax Jurisdiction of Domicile [Extensible Enumeration]	country:US	country:US	country:US	country:US