Note 4 - Investment Securities (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

Marketable Securities [Table Text Block]

	June 30, 2016
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Available for sale
U.S. Treasuries and government agencies	$	24,176	$	31	$	--		$	24,207
Municipal securities		68,769		1,316		(21	)		70,064
Residential mortgage-backed securities		95,634		1,632		(26	)		97,240
Total available for sale	$	188,579	$	2,979	$	(47	)	$	191,511
Held to maturity
Municipal securities	$	1,038	$	--	$	--		$	1,038
Total held to maturity	$	1,038	$	--	$	--		$	1,038

	December 31, 2015
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Available for sale
U.S. Treasuries and government agencies	$	49,612	$	5	$	(117	)	$	49,500
Municipal securities		63,276		717		(60	)		63,933
Residential mortgage-backed securities		85,072		647		(567	)		85,152
Total available for sale	$	197,960	$	1,369	$	(744	)	$	198,585

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

	June 30, 2016
	Less than 12 Months				12 Months or More				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
Municipal securities	$	3,243	$	20	$	255	$	1	$	3,498	$	21
Residential mortgage-backed securities		9,143		26		--		--		9,143		26
Total	$	12,386	$	46	$	255	$	1	$	12,641	$	47

	December 31, 201 5
	Less than 12 Months				12 Months or More				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
U.S. Treasuries and government agencies	$	46,805	$	117	$	--	$	--	$	46,805	$	117
Municipal securities		4,741		32		2,707		28		7,448		60
Residential mortgage-backed securities		57,561		567		--		--		57,561		567
Total	$	109,107	$	716	$	2,707	$	28	$	111,814	$	744

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2016
	Available for Sale							Held to Maturity
	Amortized Cost		Fair Value		Weighted Average Rate			Amortized Cost		Fair Value		Weighted Average Rate
Within one year	$	22,691	$	22,715		0.77	%	$	--	$	--		--
Due from one year to five years		22,437		22,633		1.93	%		--		--		--
Due from five years to ten years		16,604		17,096		2.95	%		--		--		--
Due after ten years		31,213		31,827		2.96	%		1,038		1,038		3.00	%
		92,945		94,271		2.18	%		1,038		1,038		3.00	%
Residential mortgage-backed securities		95,634		97,240		2.24	%		--		--		--
Total	$	188,579	$	191,511		2.21	%	$	1,038	$	1,038		3.00	%

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

	Six Months Ended June 30,
	2016			2015
Sales proceeds	$	8,089		$	2,082
Gross realized gains	$	98		$	88
Gross realized losses		(100	)		--
Net gains (losses) on sales of investment securities	$	(2	)	$	88