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Note 2 - Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Total, amortized cost	$ 793,422	$ 680,998
Securities available for sale, gross unrealized gains	737	2,206
Securities available for sale, gross unrealized losses	(63,807)	(66,112)
Fair value	730,352	617,092
US Government Agencies Debt Securities [Member]
Total, amortized cost	542,676	442,496
Securities available for sale, gross unrealized gains	131	0
Securities available for sale, gross unrealized losses	(47,226)	(52,000)
Fair value	495,581	390,496
Collateralized Mortgage-Backed Securities [Member]
Total, amortized cost	31,696	35,168
Securities available for sale, gross unrealized gains	4	20
Securities available for sale, gross unrealized losses	(6,332)	(5,715)
Fair value	25,368	29,473
Municipal General Obligation Bonds [Member]
Total, amortized cost	187,484	172,126
Securities available for sale, gross unrealized gains	513	1,924
Securities available for sale, gross unrealized losses	(7,827)	(6,190)
Fair value	180,170	167,860
Municipal Revenue Bonds [Member]
Total, amortized cost	31,066	30,708
Securities available for sale, gross unrealized gains	89	262
Securities available for sale, gross unrealized losses	(2,422)	(2,207)
Fair value	28,733	28,763
Other Debt and Equity Securities [Member]
Total, amortized cost	500	500
Securities available for sale, gross unrealized gains	0	0
Securities available for sale, gross unrealized losses	0	0
Fair value	$ 500	$ 500

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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