Note 16 - Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (loss) by Component (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Balance	$ 975,473	$ 874,711	$ 940,476	$ 858,103
Balance	1,005,704	894,535	1,005,704	894,535
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance	(80,223)	(97,453)	(94,190)	(92,678)
Net current period other comprehensive income (loss)	6,055	(307)	20,022	(5,082)
Balance	(74,168)	(97,760)	(74,168)	(97,760)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	266	2,340	2,922	(179)
Net current period other comprehensive income (loss)	(1,526)	381	(4,182)	2,900
Balance	(1,260)	2,721	(1,260)	2,721
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	117	59	117	59
Net current period other comprehensive income (loss)	0	0	0	0
Balance	117	59	117	59
AOCI Attributable to Parent [Member]
Balance	(79,840)	(95,054)	(91,151)	(92,798)
Net current period other comprehensive income (loss)	4,529	74	15,840	(2,182)
Balance	$ (75,311)	$ (94,980)	$ (75,311)	$ (94,980)