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Note 3 - Securities (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

Available-for-Sale Securities		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
December 31, 2023
Certificates of deposits		$	29,513			$	—			$	—			$	29,513
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
		$	186,263			$	46			$	(3,593	)		$	182,716
December 31, 2022
Certificates of deposits		$	2,233			$	—			$	—			$	2,233
Municipal securities			240				—				(15	)			225
U.S. Treasury Notes			170,906				—				(7,803	)			163,103
U.S. government-sponsored agencies			40,000				—				(301	)			39,699
Mortgage-backed securities - residential			3,997				27				(143	)			3,881
Collateralized mortgage obligations - residential			1,223				—				(26	)			1,197
		$	218,599			$	27			$	(8,288	)		$	210,338

Investments Classified by Contractual Maturity Date [Table Text Block]

		December 31, 2023
		Amortized Cost				Fair Value
Due in one year or less		$	119,194			$	117,892
Due after one year through five years			62,615				60,454
			181,809				178,346
Mortgage-backed securities - residential			3,431				3,367
Collateralized mortgage obligations - residential			1,023				1,003
		$	186,263			$	182,716

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
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	)
December 31, 2022
Municipal securities			1			$	225			$	(15	)			—			$	—			$	—				1			$	225			$	(15	)
U.S. Treasury Notes			147				104,439				(4,104	)			53				58,664				(3,699	)			200				163,103				(7,803	)
U.S. government-sponsored agencies			9				39,699				(301	)			—				—				—				9				39,699				(301	)
Mortgage-backed securities - residential			18				3,016				(143	)			—				—				—				18				3,016				(143	)
Collateralized mortgage obligations - residential			5				1,009				(18	)			1				171				(8	)			6				1,180				(26	)
			180			$	148,388			$	(4,581	)			54			$	58,835			$	(3,707	)			234			$	207,223			$	(8,288	)

Gain (Loss) on Securities [Table Text Block]

		For the years ended December 31,
		2023				2022
Proceeds		$	42,631			$	—
Gross gains			—				—
Gross losses			(454	)			—

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