Note 4 - Investment Securities (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

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

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized			Fair
June 30, 2022	Cost		Gains		Losses			Value
Available for sale
Government agency securities	$	5,364	$	—	$	(373	)	$	4,991
SBA agency securities		2,877		—		(127	)		2,750
Mortgage-backed securities- Government sponsored agencies		52,299		—		(4,909	)		47,390
Collateralized mortgage obligations		137,776		9		(10,572	)		127,213
Commercial paper		128,655		—		(182	)		128,473
Corporate debt securities		41,198		6		(2,960	)		38,244
Municipal securities		12,686		—		(3,612	)		9,074
Total	$	380,855	$	15	$	(22,735	)	$	358,135
Held to maturity
Municipal taxable securities	$	1,005	$	20	$	—		$	1,025
Municipal securities		4,736		—		(146	)		4,590
Total	$	5,741	$	20	$	(146	)	$	5,615

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized			Fair
December 31, 2021	Cost		Gains		Losses			Value
Available for sale
Government agency securities	$	5,689	$	4	$	(83	)	$	5,610
SBA agency securities		3,351		118		—			3,469
Mortgage-backed securities- Government sponsored agencies		55,534		31		(540	)		55,025
Collateralized mortgage obligations		121,377		128		(1,994	)		119,511
Commercial paper		129,962		—		(36	)		129,926
Corporate debt securities		41,999		460		(254	)		42,205
Municipal securities		12,701		—		(187	)		12,514
Total	$	370,613	$	741	$	(3,094	)	$	368,260
Held to maturity
Municipal taxable securities	$	1,506	$	77	$	—		$	1,583
Municipal securities		4,746		248		—			4,994
Total	$	6,252	$	325	$	—		$	6,577

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		Estimated		Amortized		Estimated		Amortized		Estimated		Amortized		Estimated		Amortized		Estimated
(dollars in thousands)	Cost		Fair Value		Cost		Fair Value		Cost		Fair Value		Cost		Fair Value		Cost		Fair Value
June 30, 2022
Government agency securities	$	—	$	—	$	5,364	$	4,991	$	—	$	—	$	—	$	—	$	5,364	$	4,991
SBA agency securities		—		—		1,275		1,212		1,602		1,538		—		—		2,877		2,750
Mortgage-backed securities- Government sponsored agencies		—		—		19,249		18,221		17,992		16,362		15,058		12,807		52,299		47,390
Collateralized mortgage obligations		3,034		3,034		37,290		35,566		93,299		85,289		4,153		3,324		137,776		127,213
Commercial paper		128,655		128,473		—		—		—		—		—		—		128,655		128,473
Corporate debt securities		—		—		9,874		9,625		28,651		26,670		2,673		1,949		41,198		38,244
Municipal securities		—		—		—		—		—		—		12,686		9,074		12,686		9,074
Total available for sale	$	131,689	$	131,507	$	73,052	$	69,615	$	141,544	$	129,859	$	34,570	$	27,154	$	380,855	$	358,135
Municipal taxable securities	$	—	$	—	$	1,005	$	1,025	$	—	$	—	$	—	$	—	$	1,005	$	1,025
Municipal securities		—		—		—		—		1,742		1,709		2,994		2,881		4,736		4,590
Total held to maturity	$	—	$	—	$	1,005	$	1,025	$	1,742	$	1,709	$	2,994	$	2,881	$	5,741	$	5,615
(dollars in thousands)
December 31, 2021
Government agency securities	$	—	$	—	$	5,689	$	5,610	$	—	$	—	$	—	$	—	$	5,689	$	5,610
SBA agency securities		—		—		1,551		1,582		1,800		1,887		—		—		3,351		3,469
Mortgage-backed securities- Government sponsored agencies		5,001		4,998		35,254		35,000		15,279		15,027		—		—		55,534		55,025
Collateralized mortgage obligations		117		117		78,021		76,496		43,239		42,898		—		—		121,377		119,511
Commercial paper		129,962		129,926		—		—		—		—		—		—		129,962		129,926
Corporate debt securities		7,999		8,007		8,389		8,633		22,927		22,931		2,684		2,634		41,999		42,205
Municipal securities		—		—		—		—		—		—		12,701		12,514		12,701		12,514
Total available for sale	$	143,079	$	143,048	$	128,904	$	127,321	$	83,245	$	82,743	$	15,385	$	15,148	$	370,613	$	368,260
Municipal taxable securities	$	500	$	502	$	1,006	$	1,081	$	—	$	—	$	—	$	—	$	1,506	$	1,583
Municipal securities		—		—		—		—		1,743		1,818		3,003		3,176		4,746		4,994
Total held to maturity	$	500	$	502	$	1,006	$	1,081	$	1,743	$	1,818	$	3,003	$	3,176	$	6,252	$	6,577

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less than Twelve Months							Twelve Months or More							Total
(dollars in thousands)	Unrealized Losses			Estimated Fair Value		No. of Issuances		Unrealized Losses			Estimated Fair Value		No. of Issuances		Unrealized Losses			Estimated Fair Value		No. of Issuances
June 30, 2022
Government agency securities	$	(373	)	$	4,991		3	$	—		$	—		—	$	(373	)	$	4,991		3
SBA securities		(127	)		2,750		4		—			—		—		(127	)		2,750		4
Mortgage-backed securities- Government sponsored agencies		(3,189	)		35,927		12		(1,720	)		11,463		4		(4,909	)		47,390		16
Collateralized mortgage obligations		(6,925	)		79,184		30		(3,647	)		34,289		10		(10,572	)		113,473		40
Commercial paper		(182	)		128,473		19		—			—		—		(182	)		128,473		19
Corporate debt securities		(2,373	)		35,067		32		(587	)		2,672		2		(2,960	)		37,739		34
Municipal securities		(2,170	)		5,284		4		(1,442	)		3,790		7		(3,612	)		9,074		11
Total available for sale	$	(15,339	)	$	291,676		104	$	(7,396	)	$	52,214		23	$	(22,735	)	$	343,890		127
Municipal securities	$	(146	)	$	4,590		10	$	—		$	—		—	$	(146	)	$	4,590		10
Total held to maturity	$	(146	)	$	4,590		10	$	—		$	—		—	$	(146	)	$	4,590		10

	Less than Twelve Months							Twelve Months or More							Total
(dollars in thousands)	Unrealized Losses			Estimated Fair Value		No. of Issuances		Unrealized Losses			Estimated Fair Value		No. of Issuances		Unrealized Losses			Estimated Fair Value		No. of Issuances
December 31, 2021
Government agency securities	$	(83	)	$	4,860		1	$	—		$	—		—	$	(83	)	$	4,860		1
Mortgage-backed securities- Government sponsored agencies		(536	)		44,009		12		(4	)		9,974		2		(540	)		53,983		14
Collateralized mortgage obligations		(1,916	)		79,851		23		(78	)		17,782		4		(1,994	)		97,633		27
Commercial paper		(36	)		129,926		19		—			—		—		(36	)		129,926		19
Corporate debt securities		(254	)		13,208		12		—			—		—		(254	)		13,208		12
Municipal securities		(160	)		11,447		9		(27	)		1,067		2		(187	)		12,514		11
Total available for sale	$	(2,985	)	$	283,301		76	$	(109	)	$	28,823		8	$	(3,094	)	$	312,124		84