Note 3 - Securities (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

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

	As of June 30, 2018
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Cost		Gain		Loss			Fair Value
Available-for-sale securities:
U.S. government & agencies	$	39,377	$	126	$	(509	)	$	38,994
Obligations of state and political subdivisions		57,867		1,365		(753	)		58,479
Residential mortgage-backed securities and collateralized mortgage obligations		125,466		6		(4,254	)		121,218
Corporate securities		4,054		6		(73	)		3,987
Commercial mortgage-backed securities		25,541		11		(810	)		24,742
Other asset-backed securities		217		2		—			219
Total	$	252,522	$	1,516	$	(6,399	)	$	247,639

	As of December 31, 2017
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Cost		Gain		Loss			Fair Value
Available-for-sale securities:
U.S. government & agencies	$	40,319	$	196	$	(146	)	$	40,369
Obligations of state and political subdivisions		77,412		1,910		(478	)		78,844
Residential mortgage-backed securities and collateralized mortgage obligations		116,061		69		(1,538	)		114,592
Corporate securities		5,079		18		(105	)		4,992
Commercial mortgage-backed securities		26,995		24		(378	)		26,641
Other asset-backed securities		2,540		4		(28	)		2,516
Total	$	268,406	$	2,221	$	(2,673	)	$	267,954

Amortized Cost and Estimated Fair Value Available for Sale Securities [Table Text Block]

	Available-For-Sale
(Amounts in thousands)	Amortized Cost		Fair Value
Amounts maturing in:
One year or less	$	1,509	$	1,511
After one year through five years		74,398		72,826
After five years through ten years		95,363		93,157
After ten years		81,252		80,145
Total	$	252,522	$	247,639

Schedule of Realized Gain (Loss) [Table Text Block]

	Three Months Ended June 30,					Six Months Ended June 30,
(Amounts in thousands)	2018		2017			2018			2017
Proceeds from sales of securities	$	1,107	$	13,326		$	20,505		$	27,252
Gross realized gains on sales of securities:
Obligations of state and political subdivisions	$	4	$	30		$	156		$	81
Residential mortgage-backed securities and collateralized mortgage obligations		—		19			—			37
Corporate securities		—		9			—			10
Total gross realized gains on sales of securities		4		58			156			128
Gross realized losses on sales of securities:
Obligations of state and political subdivisions		—		—			(71	)		—
Residential mortgage-backed securities and collateralized mortgage obligations		—		(23	)		—			(24	)
Corporate securities		—		—			—			(3	)
Other asset-backed securities		—		—			(45	)		—
Total gross realized losses on sales of securities		—		(23	)		(116	)		(27	)
Gain on investment securities, net	$	4	$	35		$	40		$	101

Schedule of Unrealized Loss on Investments [Table Text Block]

	As of June 30, 2018
	Less Than 12 Months					12 Months or More					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Amounts in thousands)	Value		Losses			Value		Losses			Value		Losses
Available-for-sale securities:
U.S. government & agencies	$	23,263	$	(431	)	$	1,885	$	(78	)	$	25,148	$	(509	)
Obligations of states and political subdivisions		14,930		(426	)		7,569		(327	)		22,499		(753	)
Residential mortgage-backed securities and collateralized mortgage obligations		75,930		(2,399	)		43,898		(1,855	)		119,828		(4,254	)
Corporate securities		—		—			2,957		(73	)		2,957		(73	)
Commercial mortgage-backed securities		10,417		(323	)		12,558		(487	)		22,975		(810	)
Total temporarily impaired securities	$	124,540	$	(3,579	)	$	68,867	$	(2,820	)	$	193,407	$	(6,399	)

	As of December 31, 2017
	Less Than 12 Months					12 Months or More					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Amounts in thousands)	Value		Loss			Value		Loss			Value		Loss
Available-for-sale securities:
U.S. government & agencies	$	18,140	$	(102	)	$	2,131	$	(44	)	$	20,271	$	(146	)
Obligations of states and political subdivisions		15,030		(255	)		8,368		(223	)		23,398		(478	)
Residential mortgage-backed securities and collateralized mortgage obligations		75,323		(827	)		31,036		(711	)		106,359		(1,538	)
Corporate securities		—		—			2,934		(105	)		2,934		(105	)
Commercial mortgage-backed securities		11,162		(151	)		10,026		(227	)		21,188		(378	)
Other asset-backed securities		2,167		(28	)		—		—			2,167		(28	)
Total temporarily impaired securities	$	121,822	$	(1,363	)	$	54,495	$	(1,310	)	$	176,317	$	(2,673	)