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Note 2 - Debt Securities - Available For Sale Securities in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Securities available for sale, less than 12 months, fair value	$ 2,688	$ 12,998
Securities available for sale, less than 12 months, unrealized losses	(13)	(98)
Securities available for sale, 12 months or longer, fair value	96,320	102,781
Securities available for sale, 12 months or longer, unrealized losses	(11,119)	(14,752)
Securities available for sale, total fair value	99,008	115,779
Securities available for sale, total unrealized losses	(11,132)	(14,850)
US Treasury Securities [Member]
Securities available for sale, less than 12 months, fair value	0	4,984
Securities available for sale, less than 12 months, unrealized losses	0	(1)
Securities available for sale, 12 months or longer, fair value	0	0
Securities available for sale, 12 months or longer, unrealized losses	0	0
Securities available for sale, total fair value	0	4,984
Securities available for sale, total unrealized losses	0	(1)
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, less than 12 months, fair value	694	3,914
Securities available for sale, less than 12 months, unrealized losses	(1)	(16)
Securities available for sale, 12 months or longer, fair value	4,748	6,638
Securities available for sale, 12 months or longer, unrealized losses	(24)	(98)
Securities available for sale, total fair value	5,442	10,552
Securities available for sale, total unrealized losses	(25)	(114)
Corporate Debt Securities [Member]
Securities available for sale, less than 12 months, fair value	0	0
Securities available for sale, less than 12 months, unrealized losses	0	0
Securities available for sale, 12 months or longer, fair value	24,423	27,542
Securities available for sale, 12 months or longer, unrealized losses	(454)	(1,056)
Securities available for sale, total fair value	24,423	27,542
Securities available for sale, total unrealized losses	(454)	(1,056)
Mortgage-backed Agency Securities [Member]
Securities available for sale, less than 12 months, fair value	1,994	4,100
Securities available for sale, less than 12 months, unrealized losses	(12)	(81)
Securities available for sale, 12 months or longer, fair value	67,149	68,601
Securities available for sale, 12 months or longer, unrealized losses	(10,641)	(13,598)
Securities available for sale, total fair value	69,143	72,701
Securities available for sale, total unrealized losses	$ (10,653)	$ (13,679)

X

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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