Note 4 - Securities (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

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

	As of June 30, 2016
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Cost		Gain		Loss			Fair Value
Available-for-sale securities:
U.S. government & agencies	$	3,250	$	12	$	—		$	3,262
Obligations of state and political subdivisions		56,818		2,198		(1	)		59,015
Residential mortgage backed securities and collateralized mortgage obligations		44,815		379		(179	)		45,015
Corporate securities		22,156		283		(126	)		22,313
Commercial mortgage backed securities		14,901		27		(63	)		14,865
Other asset backed securities		13,343		166		(73	)		13,436
Total	$	155,283	$	3,065	$	(442	)	$	157,906
Held-to-maturity securities:
Obligations of state and political subdivisions	$	35,415	$	1,727	$	(14	)	$	37,128

	As of December 31, 2015
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Cost		Gain		Loss			Fair Value
Available-for-sale securities:
U.S. government & agencies	$	3,886	$	57	$	—		$	3,943
Obligations of state and political subdivisions		59,332		1,811		(39	)		61,104
Residential mortgage backed securities and collateralized mortgage obligations		32,215		192		(270	)		32,137
Corporate securities		33,775		194		(191	)		33,778
Commercial mortgage backed securities		12,893		10		(134	)		12,769
Other asset backed securities		15,331		82		(114	)		15,299
Total	$	157,432	$	2,346	$	(748	)	$	159,030
Held-to-maturity securities:
Obligations of state and political subdivisions	$	35,899	$	966	$	(220	)	$	36,645

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

	Available-For-Sale				Held-To-Maturity
(Amounts in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Amounts maturing in:
One year or less	$	5,606	$	5,629	$	—	$	—
One year through five years		57,722		58,304		1,543		1,589
Five years through ten years		36,167		37,421		16,514		17,325
After ten years		55,788		56,552		17,358		18,214
Total	$	155,283	$	157,906	$	35,415	$	37,128

Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]

(Amounts in thousands)	Pledged		Available To Be Pledged		Total Held For Pledging Purposes
Public funds collateral	$	18,353	$	10,936	$	29,289
Federal Home Loan Bank of San Francisco borrowings		—		21,809		21,809
Total	$	18,353	$	32,745	$	51,098

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

	Three Months Ended June 30,						Six Months Ended June 30,
(Amounts in thousands)	2016			2015			2016			2015
Proceeds from sales of securities	$	14,455		$	10,697		$	34,389		$	35,912
Gross realized gains on sales of securities:
Obligations of state and political subdivisions	$	40		$	37		$	111		$	70
Residential mortgage backed securities and collateralized mortgage obligations		2			49			2			62
Corporate securities		33			—			76			82
Commercial mortgage backed securities		—			—			5			4
Other asset backed securities		21			—			21			93
Total gross realized gains on sales of securities		96			86			215			311
Gross realized losses on sales of securities:
U.S. government & agencies		—			(1	)		—			(1	)
Residential mortgage backed securities and collateralized mortgage obligations		(64	)		—			(64	)		(9	)
Corporate securities		—			—			(25	)		—
Other asset backed securities		(4	)		(24	)		(4	)		(25	)
Total gross realized losses on sales of securities		(68	)		(25	)		(93	)		(35	)
Gain on investment securities, net	$	28		$	61		$	122		$	276

Schedule of Unrealized Loss on Investments [Table Text Block]

	As of June 30, 2016
	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:
Obligations of states and political subdivisions	$	1,109	$	(1	)	$	—	$	—		$	1,109	$	(1	)
Residential mortgage backed securities and collateralized mortgage obligations		11,091		(49	)		5,518		(130	)		16,609		(179	)
Corporate securities		2,542		(126	)		—		—			2,542		(126	)
Commercial mortgage backed securities		5,020		(53	)		2,996		(10	)		8,016		(63	)
Other asset backed securities		50		—			1,333		(73	)		1,383		(73	)
Total temporarily impaired securities	$	19,812	$	(229	)	$	9,847	$	(213	)	$	29,659	$	(442	)
Held-to-maturity securities:
Obligations of states and political subdivisions	$	—	$	—		$	1,651	$	(14	)	$	1,651	$	(14	)

	As of December 31, 2015
	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:
Obligations of states and political subdivisions	$	7,682	$	(39	)	$	—	$	—		$	7,682	$	(39	)
Residential mortgage backed securities and collateralized mortgage obligations		16,279		(210	)		4,931		(60	)		21,210		(270	)
Corporate securities		18,707		(191	)		—		—			18,707		(191	)
Commercial mortgage backed securities		7,557		(62	)		1,516		(72	)		9,073		(134	)
Other asset backed securities		4,734		(13	)		3,430		(101	)		8,164		(114	)
Total temporarily impaired securities	$	54,959	$	(515	)	$	9,877	$	(233	)	$	64,836	$	(748	)
Held-to-maturity securities:
Obligations of states and political subdivisions	$	1,513	$	(63	)	$	4,831	$	(157	)	$	6,344	$	(220	)