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Note 3 - Securities (Tables)

3 Months Ended

Mar. 31, 2023

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
March 31, 2023
Certificates of deposit		$	2,977			$	—			$	—			$	2,977
Municipal securities			240				—				(13	)			227
U.S. Treasury Notes			128,137				—				(5,772	)			122,365
U.S. government-sponsored agencies			40,000				—				(261	)			39,739
Mortgage-backed securities - residential			3,880				25				(124	)			3,781
Collateralized mortgage obligations - residential			1,171				—				(21	)			1,150
		$	176,405			$	25			$	(6,191	)		$	170,239
December 31, 2022
Certificates of deposit		$	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]

		March 31, 2023
		Amortized Cost				Fair Value
Due in one year or less		$	63,028			$	61,858
Due after one year through five years			108,326				103,450
			171,354				165,308
Mortgage-backed securities - residential			3,880				3,781
Collateralized mortgage obligations - residential			1,171				1,150
		$	176,405			$	170,239

Schedule of Unrealized Loss on Investments [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
March 31, 2023
Municipal securities			—			$	—			$	—				1			$	227			$	(13	)			1			$	227			$	(13	)
U.S. Treasury Notes			2				4,170				(53	)			179				118,195				(5,719	)			181				122,365				(5,772	)
U.S. government-sponsored agencies			9				39,739				(261	)			—				—				—				9				39,739				(261	)
Mortgage-backed securities - residential			14				2,414				(78	)			2				539				(46	)			16				2,953				(124	)
Collateralized mortgage obligations - residential			4				256				(4	)			4				894				(17	)			8				1,150				(21	)
			29			$	46,579			$	(396	)			186			$	119,855			$	(5,795	)			215			$	166,434			$	(6,191	)
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]

		Three Months Ended
		March 31,
		2023				2022
Proceeds		$	42,631			$	—
Gross gains			—				—
Gross losses			(454	)			—

X

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Tabular disclosure of realized and unrealized gain (loss) on investment in security.

+ References

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-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
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