Note 4 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Marketable Securities [Table Text Block]

	December 31, 2016
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In Thousands)
Available-for-sale:
U.S. government and agency	$	5,673	$	7	$	(72	)	$	5,608
Municipal obligations		68,493		575		(1,404	)		67,664
Corporate obligations		9,454		15		(162	)		9,307
MBSs - government-backed		29,537		283		(308	)		29,512
CMOs - government-backed		16,530		15		(200	)		16,345
Total	$	129,687	$	895	$	(2,146	)	$	128,436

	December 31, 2015
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In Thousands)
Available-for-sale:
U.S. government and agency	$	10,684	$	26	$	(95	)	$	10,615
Municipal obligations		66,606		1,041		(578	)		67,069
Corporate obligations		9,615		-		(165	)		9,450
MBSs - government-backed		32,810		111		(186	)		32,735
CMOs - government-backed		26,233		40		(404	)		25,869
Total	$	145,948	$	1,218	$	(1,428	)	$	145,738

Schedule of Realized Gain (Loss) [Table Text Block]

	Years Ended
	December 31,
	2016			2015
	(In Thousands)
Proceeds from sale of available-for-sale securities	$	23,649		$	31,301
Gross realized gain on sale of available-for-sale securities	$	272		$	534
Gross realized loss on sale of available-for-sale securities		(23	)		(300	)
Net realized gain on sale of available-for-sale securities	$	249		$	234

Investments Classified by Contractual Maturity Date [Table Text Block]

	Amortized		Fair
	Cost		Value
	(In Thousands)
Due in one year or less	$	1,042	$	1,040
Due from one to five years		8,116		8,058
Due from five to ten years		15,223		15,038
Due after ten years		59,239		58,443
		83,620		82,579
MBSs - government-backed		29,537		29,512
CMOs - government-backed		16,530		16,345
Total	$	129,687	$	128,436

Schedule of Unrealized Loss on Investments [Table Text Block]

	December 31, 2016
	Less than 12 Months					12 Months or Longer
			Gross					Gross
	Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses
	(In Thousands)
U.S. government and agency	$	4,420	$	(72	)	$	-	$	-
Municipal obligations		39,786		(1,392	)		634		(12	)
Corporate obligations		3,375		(15	)		4,918		(147	)
MBSs and CMOs - government-backed		18,113		(405	)		7,855		(103	)
Total	$	65,694	$	(1,884	)	$	13,407	$	(262	)

	December 31, 2015
	Less than 12 months					12 months or Longer
			Gross					Gross
	Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses
	(In Thousands)
U.S. government and agency	$	3,173	$	(24	)	$	5,986	$	(71	)
Municipal obligations		15,913		(132	)		21,163		(446	)
Corporate obligations		5,283		(80	)		3,915		(85	)
MBSs and CMOs - government-backed		23,164		(249	)		13,886		(341	)
Total	$	47,533	$	(485	)	$	44,950	$	(943	)