Note 5 - Securities (Tables)

9 Months Ended

Sep. 30, 2015

Investments, Debt and Equity Securities [Abstract]

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

	As of September 30, 2015
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Cost		Gain		Loss			Fair Value
Available-for-sale securities:
U.S. government & agencies	$	3,931	$	67	$	—		$	3,998
Obligations of state and political subdivisions		55,778		1,740		(65	)		57,453
Residential mortgage backed securities and collateralized mortgage obligations		34,091		215		(248	)		34,058
Corporate securities		36,531		282		(253	)		36,560
Commercial mortgage backed securities		9,358		10		(102	)		9,266
Other asset backed securities		15,994		91		(111	)		15,974
Total	$	155,683	$	2,405	$	(779	)	$	157,309
Held-to-maturity securities:
Obligations of state and political subdivisions	$	36,093	$	693	$	(492	)	$	36,294

	As of December 31, 2014
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Cost		Gain		Loss			Fair Value
Available-for-sale securities:
U.S. government & agencies	$	6,351	$	58	$	(16	)	$	6,393
Obligations of state and political subdivisions		52,629		1,788		(54	)		54,363
Residential mortgage backed securities and collateralized mortgage obligations		46,727		457		(169	)		47,015
Corporate securities		37,392		475		(133	)		37,734
Commercial mortgage backed securities		10,402		60		(73	)		10,389
Other asset backed securities		30,896		393		(197	)		31,092
Total	$	184,397	$	3,231	$	(642	)	$	186,986
Held-to-maturity securities:
Obligations of state and political subdivisions	$	36,806	$	712	$	(400	)	$	37,118

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	$	7,237	$	7,258	$	—	$	—
One year through five years		51,370		51,602		1,504		1,540
Five years through ten years		50,613		51,544		16,619		16,874
After ten years		46,463		46,905		17,970		17,880
Total	$	155,683	$	157,309	$	36,093	$	36,294

Schedule of Financial Instruments Held for Pledging [Table Text Block]

(Amounts in thousands)	Pledged		Available To Be Pledged		Total Held For Pledging Purposes
Public funds collateral	$	19,083	$	9,923	$	29,006
Federal Home Loan Bank of San Francisco borrowings		—		16,629		16,629
Interest rate swap contracts		3,136		1,361		4,497
Total	$	22,219	$	27,913	$	50,132

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

	Three Months Ended September 30,						Nine Months Ended September 30,
(Amounts in thousands)	2015			2014			2015			2014
Proceeds from sales of securities	$	25,340		$	13,036		$	61,255		$	81,820
Gross realized gains on sales of securities:
Obligations of state and political subdivisions	$	16		$	44		$	86		$	215
Residential mortgage backed securities and collateralized mortgage obligations		49			7			111			75
Corporate securities		52			82			134			309
Commercial mortgage backed securities		10			—			14			5
Other asset backed securities		50			10			142			73
Total gross realized gains on sales of securities		177			143			487			677
Gross realized losses on sales of securities:
U.S. government & agencies		(4	)		—			(5	)		(114	)
Obligations of state and political subdivisions		(4	)		(50	)		(4	)		(209	)
Residential mortgage backed securities and collateralized mortgage obligations		(2	)		(61	)		(12	)		(543	)
Corporate securities		—			—			—			(8	)
Commercial mortgage backed securities		—			—			—			(33	)
Other asset backed securities		(30	)		—			(53	)		(22	)
Total gross realized losses on sales of securities		(40	)		(111	)		(74	)		(929	)
Gain (loss) on investment securities, net	$	137		$	32		$	413		$	(252	)

Schedule of Unrealized Loss on Investments [Table Text Block]

	As of September 30, 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:
U.S. government & agencies	$	—	$	—		$	—	$	—		$	—	$	—
Obligations of states and political subdivisions		6,284		(60	)		358		(5	)		6,642		(65	)
Residential mortgage backed securities and collateralized mortgage obligations		14,174		(155	)		3,629		(93	)		17,803		(248	)
Corporate securities		18,600		(232	)		3,478		(21	)		22,078		(253	)
Commercial mortgage backed securities		5,040		(50	)		1,539		(52	)		6,579		(102	)
Other asset backed securities		2,668		(2	)		3,581		(109	)		6,249		(111	)
Total temporarily impaired securities	$	46,766	$	(499	)	$	12,585	$	(280	)	$	59,351	$	(779	)
Held-to-maturity securities:
Obligations of states and political subdivisions	$	7,829	$	(182	)	$	4,679	$	(310	)	$	12,508	$	(492	)

	As of December 31, 2014
	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	$	—	$	—		$	1,269	$	(16	)	$	1,269	$	(16	)
Obligations of states and political subdivisions		3,952		(34	)		2,078		(20	)		6,030		(54	)
Residential mortgage backed securities and collateralized mortgage obligations		10,193		(66	)		5,365		(103	)		15,558		(169	)
Corporate securities		7,058		(36	)		6,542		(97	)		13,600		(133	)
Commercial mortgage backed securities		4,912		(14	)		1,542		(59	)		6,454		(73	)
Other asset backed securities		4,891		(16	)		6,088		(181	)		10,979		(197	)
Total temporarily impaired securities	$	31,006	$	(166	)	$	22,884	$	(476	)	$	53,890	$	(642	)
Held-to-maturity securities:
Obligations of states and political subdivisions	$	1,556	$	(14	)	$	12,726	$	(386	)	$	14,282	$	(400	)