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Note 4 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Available for Sale Securities, and Held to Maturity [Table Text Block]

						Gross				Gross
(dollars in thousands)		Amortized				Unrealized				Unrealized				Fair
December 31, 2023		Cost				Gains				Losses				Value
Available for sale
Government agency securities		$	8,705			$	—			$	(544	)		$	8,161
SBA agency securities			13,289				144				(216	)			13,217
Mortgage-backed securities: residential			40,507				—				(5,855	)			34,652
Collateralized mortgage obligations: residential			94,071				454				(12,198	)			82,327
Collateralized mortgage obligations: commercial			69,941				22				(2,664	)			67,299
Commercial paper			73,121				—				(16	)			73,105
Corporate debt securities			34,800				—				(4,109	)			30,691
Municipal securities			12,636				—				(3,127	)			9,509
Total		$	347,070			$	620			$	(28,729	)		$	318,961
Held to maturity
Municipal taxable securities		$	501			$	3			$	—			$	504
Municipal securities			4,708				—				(115	)			4,593
Total		$	5,209			$	3			$	(115	)		$	5,097

						Gross				Gross
(dollars in thousands)		Amortized				Unrealized				Unrealized				Fair
December 31, 2022		Cost				Gains				Losses				Value
Available for sale
Government agency securities		$	5,012			$	—			$	(517	)		$	4,495
SBA agency securities			2,634				—				(223	)			2,411
Mortgage-backed securities: residential			44,809				—				(6,752	)			38,057
Mortgage-backed securities: commercial			4,887				—				(16	)			4,871
Collateralized mortgage obligations: residential			82,759				—				(12,856	)			69,903
Collateralized mortgage obligations: commercial			44,591				—				(2,901	)			41,690
Commercial paper			49,551				2				(16	)			49,537
Corporate debt securities			41,176				1				(4,165	)			37,012
Municipal securities			12,669				—				(3,815	)			8,854
Total		$	288,088			$	3			$	(31,261	)		$	256,830
Held to maturity
Municipal taxable securities		$	1,003			$	7			$	(3	)		$	1,007
Municipal securities			4,726				—				(170	)			4,556
Total		$	5,729			$	7			$	(173	)		$	5,563

Investments Classified by Contractual Maturity Date [Table Text Block]

		Less than One Year								More than One Year to Five Years								More than Five Years to Ten Years								More than Ten Years								Total
		Amortized								Amortized								Amortized								Amortized								Amortized
(dollars in thousands)		Cost				Fair Value				Cost				Fair Value				Cost				Fair Value				Cost				Fair Value				Cost				Fair Value
December 31, 2023
Government agency securities		$	—			$	—			$	8,705			$	8,161			$	—			$	—			$	—			$	—			$	8,705			$	8,161
SBA securities			—				—				2,292				2,095				10,997				11,122				—				—				13,289				13,217
Mortgage-backed securities: residential			—				—				11,023				9,986				19,762				16,965				9,722				7,701				40,507				34,652
Collateralized mortgage obligations: residential			18				17				36,876				35,758				57,177				46,552				—				—				94,071				82,327
Collateralized mortgage obligations: commercial			3,014				3,018				20,296				18,481				46,631				45,800				—				—				69,941				67,299
Commercial paper			73,121				73,105				—				—				—				—				—				—				73,121				73,105
Corporate debt securities			—				—				12,912				12,491				19,249				16,232				2,639				1,968				34,800				30,691
Municipal securities			—				—				—				—				—				—				12,636				9,509				12,636				9,509
Total available for sale		$	76,153			$	76,140			$	92,104			$	86,972			$	153,816			$	136,671			$	24,997			$	19,178			$	347,070			$	318,961
Municipal taxable securities		$	—			$	—			$	501			$	504			$	—			$	—			$	—			$	—			$	501			$	504
Municipal securities			—				—				—				—				2,952				2,873				1,756				1,720				4,708				4,593
Total held to maturity		$	—			$	—			$	501			$	504			$	2,952			$	2,873			$	1,756			$	1,720			$	5,209			$	5,097
(dollars in thousands)
December 31, 2022
Government agency securities		$	—			$	—			$	5,012			$	4,495			$	—			$	—			$	—			$	—			$	5,012			$	4,495
SBA securities			—				—				2,634				2,411				—				—				—				—				2,634				2,411
Mortgage-backed securities: residential			—				—				13,013				11,598				29,114				24,361				2,682				2,098				44,809				38,057
Mortgage-backed securities: commercial			—				—				4,887				4,871				—				—				—				—				4,887				4,871
Collateralized mortgage obligations: residential			—				—				20,687				19,646				62,072				50,257				—				—				82,759				69,903
Collateralized mortgage obligations: commercial			—				—				16,382				14,644				28,209				27,046				—				—				44,591				41,690
Commercial paper			49,551				49,537				—				—				—				—				—				—				49,551				49,537
Corporate debt securities			3,705				3,706				11,355				10,806				23,454				20,662				2,662				1,838				41,176				37,012
Municipal securities			—				—				—				—				—				—				12,669				8,854				12,669				8,854
Total available for sale		$	53,256			$	53,243			$	73,970			$	68,471			$	142,849			$	122,326			$	18,013			$	12,790			$	288,088			$	256,830
Municipal taxable securities		$	501			$	498			$	502			$	509			$	—			$	—			$	—			$	—			$	1,003			$	1,007
Municipal securities			—				—				—				—				1,739				1,692				2,987				2,864				4,726				4,556
Total held to maturity		$	501			$	498			$	502			$	509			$	1,739			$	1,692			$	2,987			$	2,864			$	5,729			$	5,563

Gain (Loss) on Securities [Table Text Block]

		Less than Twelve Months								Twelve Months or More								Total
(dollars in thousands)		Fair Value				Unrealized Losses				Fair Value				Unrealized Losses				Fair Value				Unrealized Losses
December 31, 2023
Government agency securities		$	4,238			$	(72	)		$	3,923			$	(472	)		$	8,161			$	(544	)
SBA securities			5,102				(18	)			2,094				(198	)			7,196				(216	)
Mortgage-backed securities: residential			—				—				34,652				(5,855	)			34,652				(5,855	)
Collateralized mortgage obligations: residential			2,597				(37	)			60,275				(12,161	)			62,872				(12,198	)
Collateralized mortgage obligations: commercial			18,463				(70	)			35,077				(2,594	)			53,540				(2,664	)
Commercial paper (1)			53,211				(16	)			—				—				53,211				(16	)
Corporate debt securities			—				—				30,691				(4,109	)			30,691				(4,109	)
Municipal securities			—				—				9,509				(3,127	)			9,509				(3,127	)
Total available for sale		$	83,611			$	(213	)		$	176,221			$	(28,516	)		$	259,832			$	(28,729	)
Municipal securities		$	1,397			$	(19	)		$	3,196			$	(96	)		$	4,593			$	(115	)
Total held to maturity		$	1,397			$	(19	)		$	3,196			$	(96	)		$	4,593			$	(115	)

		Less than Twelve Months								Twelve Months or More								Total
(dollars in thousands)		Fair Value				Unrealized Losses				Fair Value				Unrealized Losses				Fair Value				Unrealized Losses
December 31, 2022
Government agency securities		$	354			$	(24	)		$	4,141			$	(493	)		$	4,495			$	(517	)
SBA securities			2,411				(223	)			—				—				2,411				(223	)
Mortgage-backed securities: residential			5,535				(362	)			32,522				(6,390	)			38,057				(6,752	)
Mortgage-backed securities: commercial			4,871				(16	)			—				—				4,871				(16	)
Collateralized mortgage obligations: residential			27,050				(1,842	)			39,815				(11,014	)			66,865				(12,856	)
Collateralized mortgage obligations: commercial			18,741				(790	)			22,949				(2,111	)			41,690				(2,901	)
Commercial paper (1)			39,624				(16	)			—				—				39,624				(16	)
Corporate debt securities			22,977				(1,843	)			10,330				(2,322	)			33,307				(4,165	)
Municipal securities			—				—				8,854				(3,815	)			8,854				(3,815	)
Total available for sale		$	121,563			$	(5,116	)		$	118,611			$	(26,145	)		$	240,174			$	(31,261	)
Municipal taxable securities		$	498			$	(3	)		$	—			$	—			$	498			$	(3	)
Municipal securities			4,556				(170	)			—				—				4,556				(170	)
Total held to maturity		$	5,054			$	(173	)		$	—			$	—			$	5,054			$	(173	)

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(7)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9)(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

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