Note 5 - Investment Securities (Tables)

9 Months Ended

Sep. 30, 2016

Notes Tables

Schedule of Investment Securities Available-for-sale and Held-to-Maturity [Table Text Block]

	Available-for-Sale
	September 30 , 201 6
			Gross		Gross			Estimated
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(Dollars in Thousands)
Mortgage-backed securities:
Residential	$	96,845	$	1,534	$	(38	)	$	98,341
Commercial		69,430		280		(384	)		69,326
Obligations of states and political subdivisions		10,153		582		—			10,735
Obligations of U.S. government-sponsored agencies		2,000		6		—			2,006
Corporate notes		762		1		—			763
U.S. Treasury securities		80		—		—			80
Total	$	179,270	$	2,403	$	(422	)	$	181,251

	Held-to-Maturity
	September 30 , 201 6
			Gross		Gross			Estimated
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(Dollars in Thousands)
Mortgage-backed securities:
Commercial	$	16,052	$	81	$	—		$	16,133
Obligations of U.S. government-sponsored agencies		10,121		59		(2	)		10,178
Obligations of states and political subdivisions		2,142		33		(3	)		2,172
Total	$	28,315	$	173	$	(5	)	$	28,483

	Available-for-Sale
	December 31, 201 5
			Gross		Gross			Estimated
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(Dollars in Thousands)
Mortgage-backed securities:
Residential	$	135,104	$	998	$	(608	)	$	135,494
Commercial		45,961		164		(616	)		45,509
Obligations of states and political subdivisions		14,071		931		(4	)		14,998
Obligations of U.S. government-sponsored agencies		1,999		—		(17	)		1,982
Corporate notes		780		—		—			780
U.S. Treasury securities		80		—		—			80
Total	$	197,995	$	2,093	$	(1,245	)	$	198,843

	Held-to-Maturity
	December 31, 201 5
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(Dollars in Thousands)
Mortgage-backed securities:
Commercial	$	16,321	$	33	$	(170	)	$	16,184
Obligations of U.S. government-sponsored agencies		13,766		19		(71	)		13,714
Obligations of states and political subdivisions		2,272		18		(4	)		2,286
Total	$	32,359	$	70	$	(245	)	$	32,184

Investments Classified by Contractual Maturity Date [Table Text Block]

	Available-for-Sale				Held-to-Maturity
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(Dollars in Thousands)
Maturing within one year	$	2,007	$	2,016	$	—	$	—
Maturing after one to five years		5,400		5,501		2,064		2,109
Maturing after five to ten years		75,845		77,084		7,215		7,247
Maturing after ten years		96,018		96,650		19,036		19,127
Total	$	179,270	$	181,251	$	28,315	$	28,483

Schedule of Unrealized Loss on Investments [Table Text Block]

	Available-for-Sale
	September 30 , 201 6
	Less than 12 Months					12 Months or More
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(Dollars in Thousands)
Mortgage-backed securities:
Residential	$	7,855	$	(15	)	$	1,954	$	(23	)
Commercial		28,829		(82	)		11,498		(302	)
U.S. Treasury securities		80		—			—		—
Total	$	36,764	$	(97	)	$	13,452	$	(325	)

	Held-to-Maturity
	September 30 , 201 6
	Less than 12 Months					12 Months or More
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(Dollars in Thousands)
Mortgage-backed securities:
Commercial	$	1,948	$	—		$	—	$	—
Obligations of U.S. government-sponsored agencies		1,397		(2	)		—		—
Obligations of states and political subdivisions		563		(3	)		—		—
Total	$	3,908	$	(5	)	$	—	$	—

	Available-for-Sale
	December 31, 201 5
	Less than 12 Months					12 Months or More
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(Dollars in Thousands)
Mortgage-backed securities:
Residential	$	83,403	$	(458	)	$	9,061	$	(150	)
Commercial		24,337		(272	)		8,918		(344	)
Obligations of U.S. government-sponsored agencies		1,982		(17	)		—		—
Corporate notes		779		—			—		—
Obligations of states and political subdivisions		707		(4	)		—		—
Total	$	111,208	$	(751	)	$	17,979	$	(494	)

	Held-to-Maturity
	December 31, 201 5
	Less than 12 Months					12 Months or More
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(Dollars in Thousands)
Mortgage-backed securities:
Commercial	$	14,143	$	(170	)	$	—	$	—
Obligations of U.S. government-sponsored agencies		11,163		(44	)		1,560		(27	)
Obligations of states and political subdivisions		572		(4	)		—		—
Total	$	25,878	$	(218	)	$	1,560	$	(27	)