Note 5 - Investment Securities (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Unrealized Gain (Loss) on Investments [Table Text Block]

	At September 30, 2020
(dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Government agencies	$	33,848	$	-	$	(476	)	$	33,372
Collateralized mortgage obligations		200,590		3,275		(63	)		203,802
Agency mortgage-backed securities		130,372		837		(6	)		131,203
Municipal securities		2,635		27		-			2,662
Corporate bonds		73,011		99		(3,494	)		69,616
Total securities available for sale	$	440,456	$	4,238	$	(4,039	)	$	440,655
U.S. Government agencies	$	84,689	$	4,486	$	-		$	89,175
Collateralized mortgage obligations		320,408		14,300		(54	)		334,654
Agency mortgage-backed securities		283,842		4,725		(27	)		288,540
Total securities held to maturity	$	688,939	$	23,511	$	(81	)	$	712,369

	At December 31, 2019
(dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Government agencies	$	38,743	$	1	$	(439	)	$	38,305
Collateralized mortgage obligations		329,492		2,368		(422	)		331,438
Agency mortgage-backed securities		98,953		82		(98	)		98,937
Municipal securities		4,064		18		-			4,082
Corporate bonds		69,499		79		(3,298	)		66,280
Total securities available for sale	$	540,751	$	2,548	$	(4,257	)	$	539,042
U.S. Government agencies	$	94,913	$	482	$	(294	)	$	95,101
Collateralized mortgage obligations		416,177		7,603		(793	)		422,987
Agency mortgage-backed securities		133,752		1,782		(513	)		135,021
Total securities held to maturity	$	644,842	$	9,867	$	(1,600	)	$	653,109

Investments Classified by Contractual Maturity Date [Table Text Block]

	Available for Sale				Held to Maturity
(dollars in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in 1 year or less	$	440	$	441	$	757	$	766
After 1 year to 5 years		50,361		49,908		61,794		64,794
After 5 years to 10 years		55,693		52,670		22,138		23,615
After 10 years		3,000		2,631		-		-
Collateralized mortgage obligations		200,590		203,802		320,408		334,654
Agency mortgage-backed securities		130,372		131,203		283,842		288,540
Total	$	440,456	$	440,655	$	688,939	$	712,369

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]

	At September 30, 2020
	Less than 12 months				12 months or more				Total
(dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Government agencies	$	8,254	$	89	$	25,118	$	387	$	33,372	$	476
Collateralized mortgage obligations		44,918		60		15,929		3		60,847		63
Agency mortgage-backed securities		1,787		6		-		-		1,787		6
Municipal securities		-		-		-		-		-		-
Corporate bonds		-		-		54,506		3,494		54,506		3,494
Total Available for Sale	$	54,959	$	155	$	95,553	$	3,884	$	150,512	$	4,039

	At September 30, 2020
	Less than 12 months				12 months or more				Total
(dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Government agencies	$	-	$	-	$	-	$	-	$	-	$	-
Collateralized mortgage obligations		13,625		51		494		3		14,119		54
Agency mortgage-backed securities		4,942		27		-		-		4,942		27
Total Held to Maturity	$	18,567	$	78	$	494	$	3	$	19,061	$	81

	At December 31, 2019
	Less than 12 months				12 months or more				Total
(dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Government agencies	$	28,136	$	439	$	-	$	-	$	28,136	$	439
Collateralized mortgage obligations		63,384		328		6,164		94		69,548		422
Agency mortgage-backed securities		2,924		13		6,411		85		9,335		98
Municipal securities		-		-		-		-		-		-
Corporate bonds		2,820		180		51,882		3,118		54,702		3,298
Total Available for Sale	$	97,264	$	960	$	64,457	$	3,297	$	161,721	$	4,257

	At December 31, 2019
	Less than 12 months				12 months or more				Total
(dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Government agencies	$	33,092	$	220	$	3,703	$	74	$	36,795	$	294
Collateralized mortgage obligations		24,211		18		64,324		775		88,535		793
Agency mortgage-backed securities		14,044		33		52,132		480		66,176		513
Total Held to Maturity	$	71,347	$	271	$	120,159	$	1,329	$	191,506	$	1,600