Note 2 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Summary of Investment Holdings, Schedule of Investments [Table Text Block]

	Amortized		Gross		Gross		Fair
Securities available for sale:	Cost		Unrealized Gains		Unrealized Losses		Value
	(In thousands)
December 31, 2015
Government agencies	$	30,850	$	541	$	6	$	31,385
Mortgage-backed securities		128,820		3,141		277		131,684
Municipal securities		55,534		1,305		8		56,831
Corporate bonds		28,744		-		349		28,395
Total	$	243,948	$	4,987	$	640	$	248,295
December 31, 2014
Government agencies	$	30,911	$	397	$	76	$	31,232
Mortgage-backed securities		170,443		4,384		547		174,280
Municipal securities		54,014		1,797		109		55,702
Corporate bonds		31,411		36		362		31,085
Total	$	286,779	$	6,614	$	1,094	$	292,299

	Amortized		Gross		Gross		Fair
Securities held to maturity:	Cost		Unrealized Gains		Unrealized Losses		Value
	(In thousands)
December 31, 2015
Government agencies	$	508	$	2	$	-	$	510
Total	$	508	$	2	$	-	$	510
December 31, 2014
Government agencies	$	507	$	5	$	-	$	512
Total	$	507	$	5	$	-	$	512

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

	Years Ended December 31,
	2015			2014
	(In thousands)
Proceeds from Sale	$	46,236		$	788
Gross realized gains on sales		1,429			14
Gross realized losses on sales		(11	)		-
Total realized gains (losses), net	$	1,418		$	14

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less Than 12 Months				12 Months or More				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
	(In thousands)
December 31, 2015
Government agencies	$	3,785	$	12	$	-	$	-	$	3,785	$	12
Mortgage-backed securities		51,956		264		2,641		7		54,597		271
Municipal securities		1,530		8		-		-		1,530		8
Corporate bonds		16,115		120		11,280		229		27,395		349
Total	$	73,386	$	404	$	13,921	$	236	$	87,307	$	640
December 31, 2014
Government agencies	$	11,790	$	76	$	-	$	-	$	11,790	$	76
Mortgage-backed securities		61,106		527		3,093		20		64,199		547
Municipal securities		5,469		99		904		10		6,373		109
Corporate bonds		21,670		256		3,894		106		25,564		362
Total	$	100,035	$	958	$	7,891	$	136	$	107,926	$	1,094

Investments Classified by Contractual Maturity Date [Table Text Block]

	Less Than		One to		Five to		Over
	One Year		Five Years		Ten Years		Ten Years
	(In thousands)
Securities available for sale:
Government agencies
Amortized cost	$	-	$	15,413	$	15,438	$	-
Fair value		-		15,576		15,809		-
Mortgage-backed securities
Amortized cost		-		63,149		42,277		23,393
Fair value		-		63,739		42,956		24,989
Municipal securities
Amortized cost		2,729		21,653		26,193		4,959
Fair value		2,736		22,163		26,854		5,078
Corporate bonds
Amortized cost		-		18,746		9,998		-
Fair value		-		18,624		9,771		-
Total Amortized cost	$	2,729	$	118,961	$	93,906	$	28,352
Total Fair value	$	2,736	$	120,102	$	95,390	$	30,067
Securities held to maturity:
Government agencies
Amortized cost	$	-	$	508	$	-	$	-
Fair value		-		510		-		-
Total Amortized cost	$	-	$	508	$	-	$	-
Total Fair value	$	-	$	510	$	-	$	-

Marketable Securities [Table Text Block]

	December 31, 2015
	Amortized Cost		Fair Value
	(In thousands)
Obligations of state and political subdivisions:
General obligation bonds:
Pennsylvania	$	6,461	$	6,589
California		3,612		3,709
Washington		3,430		3,436
Indiana		2,468		2,483
North Carolina		2,375		2,408
South Carolina		2,261		2,321
Alabama		1,839		1,860
Texas		1,814		1,848
Other (11 states)		10,175		10,481
Total general obligation bonds		34,435		35,135
Revenue bonds:
New York		7,307		7,531
North Carolina		3,781		3,893
Mississippi		2,348		2,378
Oklahoma		2,277		2,369
Pennsylvania		1,827		1,886
Other (3 states)		3,559		3,639
Total revenue bonds		21,099		21,696
Total obligations of state and political subdivisions	$	55,534	$	56,831

	December 31, 2015
	Amortized Cost		Fair Value
	(In thousands)
Revenue bonds by revenue source:
University and college	$	8,694	$	8,945
Public improvements		5,046		5,204
Pension funding		1,827		1,886
Refunding bonds		1,111		1,128
Other		4,421		4,533
Total revenue bonds	$	21,099	$	21,696