Note 4 - Investment Securities Available for Sale (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Available-for-sale Securities [Table Text Block]

	March 31, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasuries and government agencies	$	46,605	$	20	$	(18	)	$	46,607
Municipal securities		62,058		854		(50	)		62,862
Residential mortgage-backed securities		74,813		899		(38	)		75,674
Total	$	183,476	$	1,773	$	(106	)	$	185,143

	December 31, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
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	$	197,960	$	1,369	$	(744	)	$	198,585

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

	March 31, 2016
	Less than 12 Months				12 Months or More				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasuries and government agencies	$	31,408	$	18	$	--	$	--	$	31,408	$	18
Municipal securities		3,269		28		2,390		22		5,659		50
Residential mortgage-backed securities		11,355		32		1,066		6		12,421		38
Total	$	46,032	$	78	$	3,456	$	28	$	49,488	$	106

	December 31, 201 5
	Less than 12 Months				12 Months or More				Total
		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized 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]

	March 31, 2016
	Amortized Cost		Fair Value		Weighted Average Rate
Within one year	$	45,990	$	45,990		0.61	%
Due from one year to five years		20,734		20,882		1.91	%
Due from five years to ten years		17,333		17,697		2.82	%
Due after ten years		24,606		24,900		3.12	%
		108,663		109,469		1.79	%
Residential mortgage-backed securities		74,813		75,674		2.29	%
Total	$	183,476	$	185,143		1.99	%

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

	Three Months Ended March 31,
	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