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Note 3 - Securities (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
Available-for-Sale Securities
September 30, 2024
Municipal securities		$	928			$	10			$	(1	)		$	937
U.S. Treasury Notes			123,307				24				(1,065	)			122,266
U.S. government-sponsored agencies			137,898				56				(129	)			137,825
Mortgage-backed securities - residential			3,011				30				(52	)			2,989
Collateralized mortgage obligations - residential			899				—				(11	)			888
		$	266,043			$	120			$	(1,258	)		$	264,905
December 31, 2023
Municipal securities		$	930			$	12			$	(8	)		$	934
U.S. Treasury Notes			115,920				—				(3,412	)			112,508
U.S. government-sponsored agencies			35,446				7				(62	)			35,391
Mortgage-backed securities - residential			3,431				27				(91	)			3,367
Collateralized mortgage obligations - residential			1,023				—				(20	)			1,003
		$	156,750			$	46			$	(3,593	)		$	153,203

Investments Classified by Contractual Maturity Date [Table Text Block]

		September 30, 2024
		Amortized Cost				Fair Value
Due in one year or less		$	135,578			$	134,776
Due after one year through five years			126,555				126,252
			262,133				261,028
Mortgage-backed securities - residential			3,011				2,989
Collateralized mortgage obligations - residential			899				888
		$	266,043			$	264,905

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]

		Less than 12 Months												12 Months or More												Total
		Count				Fair Value				Unrealized Loss				Count				Fair Value				Unrealized Loss				Count				Fair Value				Unrealized Loss
September 30, 2024
Municipal securities			—			$	—			$	—				1			$	224			$	(1	)			1			$	224			$	(1	)
U.S. Treasury Notes			—				—				—				84				62,656				(1,065	)			84				62,656				(1,065	)
U.S. government-sponsored agencies			8				69,871				(129	)			—				—				—				8				69,871				(129	)
Mortgage-backed securities - residential			—				—				—				7				1,398				(52	)			7				1,398				(52	)
Collateralized mortgage obligations - residential			—				—				—				5				888				(11	)			5				888				(11	)
			8			$	69,871			$	(129	)			97			$	65,166			$	(1,129	)			105			$	135,037			$	(1,258	)
December 31, 2023
Municipal securities			—			$	—			$	—				1			$	217			$	(8	)			1			$	217			$	(8	)
U.S. Treasury Notes			—				—				—				170				112,508				(3,412	)			170				112,508				(3,412	)
U.S. government-sponsored agencies			2				8,987				(13	)			4				17,951				(49	)			6				26,938				(62	)
Mortgage-backed securities - residential			—				—				—				17				2,627				(91	)			17				2,627				(91	)
Collateralized mortgage obligations - residential			—				—				—				6				1,003				(20	)			6				1,003				(20	)
			2			$	8,987			$	(13	)			198			$	134,306			$	(3,580	)			200			$	143,293			$	(3,593	)

Gain (Loss) on Securities [Table Text Block]

		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2024				2023				2024				2023
Proceeds		$	—			$	—			$	—			$	42,631
Gross gains			—				—				—				—
Gross losses			—				—				—				(454	)

X

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

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