Note 7 - Securities Available for Sale (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less Than Twelve Months							Twelve Months or More							Total
(Dollars in thousands)	# of Investments		Fair Value		Unrealized Losses			# of Investments		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
March 31, 2018
Mortgage backed securities:
Federal National Mortgage Association (FNMA)		3	$	4,433		(154	)		0	$	0		0		$	4,433		(154	)
Federal Home Loan MortgageCorporation (FHLMC)		1		4,749		(35	)		0		0		0			4,749		(35	)
Collateralized mortgage obligations:
FNMA		1		207		(9	)		0		0		0			207		(9	)
Other marketable securities:
U.S. Government agency obligations		2		9,716		(267	)		12		58,696		(1,285	)		68,412		(1,552	)
Municipal obligations		13		2,271		(15	)		0		0		0			2,271		(15	)
Corporate obligations		1		202		(2	)		0		0		0			202		(2	)
Corporate preferred stock		0		0		0			1		560		(140	)		560		(140	)
Total temporarily impaired securities		21	$	21,578		(482	)		13	$	59,256		(1,425	)	$	80,834		(1,907	)

	Less Than Twelve Months							Twelve Months or More							Total
(Dollars in thousands)	# of Investments		Fair Value		Unrealized Losses			# of Investments		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
December 31, 2017
Mortgage backed securities:
FNMA		2	$	4,703		(78	)		0	$	0		0		$	4,703		(78	)
Collateralized mortgage obligations:
FNMA		1		218		(5	)		0		0		0			218		(5	)
Other marketable securities:
U.S. Government agency obligations		2		9,819		(163	)		12		58,942		(1,038	)		68,761		(1,201	)
Municipal obligations		14		2,268		(8	)		0		0		0			2,268		(8	)
Corporate obligations		1		233		(1	)		0		0		0			233		(1	)
Corporate preferred stock		0		0		0			1		560		(140	)		560		(140	)
Total temporarily impaired securities		20	$	17,241		(255	)		13	$	59,502		(1,178	)	$	76,743		(1,433	)

Available-for-sale Securities [Table Text Block]

(Dollars in thousands)	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
March 31, 2018
Mortgage-backed securities:
FHLMC	$	4,831		0		(35	)		4,796
FNMA		4,605		0		(154	)		4,451
Collateralized mortgage obligations:
FNMA		217		0		(9	)		208
		9,653		0		(198	)		9,455
Other marketable securities:
U.S. Government agency obligations		69,964		0		(1,552	)		68,412
Municipal obligations		2,386		0		(15	)		2,371
Corporate obligations		204		0		(2	)		202
Corporate preferred stock		700		0		(140	)		560
Corporate equity		174		0		0			174
		73,428		0		(1,709	)		71,719
	$	83,081		0		(1,907	)		81,174

(Dollars in thousands)	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
December 31, 2017
Mortgage-backed securities:
FHLMC	$	91		2		0			93
FNMA		4,834		1		(78	)		4,757
Collateralized mortgage obligations:
FNMA		223		0		(5	)		218
		5,148		3		(83	)		5,068
Other marketable securities:
U.S. Government agency obligations		69,962		0		(1,201	)		68,761
Municipal obligations		2,699		2		(8	)		2,693
Corporate obligations		234		0		(1	)		233
Corporate preferred stock		700		0		(140	)		560
Corporate equity		58		99		0			157
		73,653		101		(1,350	)		72,404
	$	78,801		104		(1,433	)		77,472

Available-for-sale Securities [Member]

Notes Tables

Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]

(Dollars in thousands)	Amortized Cost		Fair Value
Due less than one year	$	1,944		1,909
Due after one year through five years		76,969		75,306
Due after five years through ten years		3,211		3,146
Due after ten years		783		639
No stated maturity		174		174
Total	$	83,081		81,174