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Note 3 - Debt Securities - Securities Available-for-sale (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Securities available for sale, amortized cost	$ 184,687	$ 295,045
Securities available for sale, unrealized gains	12	29
Securities available for sale, unrealized losses	(14,850)	(14,113)
Securities available for sale, fair value	169,849	280,961
US Treasury Securities [Member]
Securities available for sale, amortized cost	55,760	146,653
Securities available for sale, unrealized gains	10	16
Securities available for sale, unrealized losses	(1)	(843)
Securities available for sale, fair value	55,769	145,826
US Government Agencies Debt Securities [Member]
Securities available for sale, amortized cost		5,750
Securities available for sale, unrealized gains		0
Securities available for sale, unrealized losses		(1)
Securities available for sale, fair value		5,749
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, amortized cost	13,949	19,528
Securities available for sale, unrealized gains	2	11
Securities available for sale, unrealized losses	(114)	(162)
Securities available for sale, fair value	13,837	19,377
Corporate Debt Securities [Member]
Securities available for sale, amortized cost	28,598	28,566
Securities available for sale, unrealized gains	0	0
Securities available for sale, unrealized losses	(1,056)	(1,485)
Securities available for sale, fair value	27,542	27,081
Mortgage-backed Agency Securities [Member]
Securities available for sale, amortized cost	86,380	94,548
Securities available for sale, unrealized gains	0	2
Securities available for sale, unrealized losses	(13,679)	(11,622)
Securities available for sale, fair value	$ 72,701	$ 82,928

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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