Note 3 - Securities - Investments in an Unrealized Loss Position That Were Temporarily Impaired (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Less than 12 months, fair value, available for sale securities	$ 28,284	$ 5,750
Less than 12 months, unrealized (loss), available for sale securities	(372)	(244)
12 months or more, fair value, available for sale securities	127,264	137,254
12 months or more, unrealized (loss), available for sale securities	(21,760)	(20,418)
Total, fair value, available for sale securities	155,548	143,004
Total, unrealized (loss), available for sale securities	(22,132)	(20,662)
US Treasury Securities [Member]
Less than 12 months, fair value, available for sale securities	0	0
Less than 12 months, unrealized (loss), available for sale securities	0	0
12 months or more, fair value, available for sale securities	11,688	11,450
12 months or more, unrealized (loss), available for sale securities	(795)	(1,026)
Total, fair value, available for sale securities	11,688	11,450
Total, unrealized (loss), available for sale securities	(795)	(1,026)
US Agency and Mortgage-backed Securities [Member]
Less than 12 months, fair value, available for sale securities	23,445	1,281
Less than 12 months, unrealized (loss), available for sale securities	(237)	(29)
12 months or more, fair value, available for sale securities	67,800	78,800
12 months or more, unrealized (loss), available for sale securities	(12,261)	(12,163)
Total, fair value, available for sale securities	91,245	80,081
Total, unrealized (loss), available for sale securities	(12,498)	(12,192)
US States and Political Subdivisions Debt Securities [Member]
Less than 12 months, fair value, available for sale securities	4,839	4,469
Less than 12 months, unrealized (loss), available for sale securities	(135)	(215)
12 months or more, fair value, available for sale securities	47,776	47,004
12 months or more, unrealized (loss), available for sale securities	(8,704)	(7,229)
Total, fair value, available for sale securities	52,615	51,473
Total, unrealized (loss), available for sale securities	$ (8,839)	$ (7,444)

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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