Note 5 - Securities (Tables)

6 Months Ended

Jun. 30, 2015

Investments, Debt and Equity Securities [Abstract]

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

	As of June 30, 2015
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Costs		Gains		Losses			Fair Value
Available-for-sale securities:
U.S. government & agencies	$	5,229	$	88	$	(3	)	$	5,314
Obligations of state and political subdivisions		49,883		1,541		(100	)		51,324
Residential mortgage backed securities and collateralized mortgage obligations		37,745		285		(254	)		37,776
Corporate securities		33,380		309		(188	)		33,501
Commercial mortgage backed securities		9,558		34		(125	)		9,467
Other asset backed securities		23,448		139		(206	)		23,381
Total	$	159,243	$	2,396	$	(876	)	$	160,763
Held-to-maturity securities:
Obligations of state and political subdivisions	$	36,655	$	538	$	(763	)	$	36,430

	As of December 31, 2014
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Costs		Gains		Losses			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	$	3,689	$	3,695	$	—	$	—
One year through five years		57,535		57,927		1,494		1,505
Five years through ten years		35,058		35,447		16,065		16,134
After ten years		62,961		63,694		19,096		18,791
Total	$	159,243	$	160,763	$	36,655	$	36,430

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	$	15,577	$	8,750	$	24,327
Federal Home Loan Bank of San Francisco borrowings		—		20,209		20,209
Interest rate swap contracts		3,731		320		4,051
Total	$	19,308	$	29,279	$	48,587

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

	Three Months Ended June 30,						Six Months Ended June 30,
(Amounts in thousands)	2015			2014			2015			2014
Proceeds from sales of securities	$	10,697		$	32,099		$	35,912		$	68,785
Gross realized gains on sales of securities:
Obligations of state and political subdivisions	$	37		$	14		$	70		$	171
Residential mortgage backed securities and collateralized mortgage obligations		49			63			62			68
Corporate securities		—			85			82			227
Commercial mortgage backed securities		—			5			4			5
Other asset backed securities		—			40			93			63
Total gross realized gains on sales of securities		86			207			311			534
Gross realized losses on sales of securities:
U.S. government & agencies		(1	)		(115	)		(1	)		(114	)
Obligations of state and political subdivisions		—			(69	)		—			(159	)
Residential mortgage backed securities and collateralized mortgage obligations		—			(13	)		(9	)		(482	)
Corporate securities		—			(8	)		—			(8	)
Commercial mortgage backed securities					(31	)		—			(32	)
Other asset backed securities		(24	)		(10	)		(25	)		(23	)
Total gross realized losses on sales of securities		(25	)		(246	)		(35	)		(818	)
Gain (loss) on investment securities, net	$	61		$	(39	)	$	276		$	(284	)

Schedule of Unrealized Loss on Investments [Table Text Block]

	As of June 30, 2015
	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	$	1,250	$	(3	)	$	—	$	—		$	1,250	$	(3	)
Obligations of states and political subdivisions		5,431		(100	)		—		—			5,431		(100	)
Residential mortgage backed securities and collateralized mortgage obligations		10,113		(175	)		3,993		(79	)		14,106		(254	)
Corporate securities		14,652		(135	)		3,475		(53	)		18,127		(188	)
Commercial mortgage backed securities		5,273		(76	)		1,546		(49	)		6,819		(125	)
Other asset backed securities		4,675		(27	)		5,689		(179	)		10,364		(206	)
Total temporarily impaired securities	$	41,394	$	(516	)	$	14,703	$	(360	)	$	56,097	$	(876	)
Held-to-maturity securities:
Obligations of states and political subdivisions	$	11,680	$	(329	)	$	5,130	$	(434	)	$	16,810	$	(763	)

	As of December 31, 2014
	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	$	—	$	—		$	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	)