Note 4 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Marketable Securities [Table Text Block]

	December 31, 2018
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In Thousands)
Available-for-sale:
U.S. government and agency	$	9,333	$	58	$	(44	)	$	9,347
Municipal obligations		69,024		244		(990	)		68,278
Corporate obligations		11,411		8		(300	)		11,119
Mortgage-backed securities		19,635		86		(373	)		19,348
Collateralized mortgage obligations		24,229		6		(360	)		23,875
Asset-backed securities		10,350		6		(158	)		10,198
Total	$	143,982	$	408	$	(2,225	)	$	142,165

	December 31, 2017
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In Thousands)
Available-for-sale:
U.S. government and agency	$	4,881	$	13	$	(37	)	$	4,857
Municipal obligations		67,508		807		(429	)		67,886
Corporate obligations		14,725		18		(99	)		14,644
Mortgage-backed securities		24,770		364		(265	)		24,869
Collateralized mortgage obligations		20,051		7		(270	)		19,788
Asset-backed securities		-		-		-			-
Total	$	131,935	$	1,209	$	(1,100	)	$	132,044

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

	Years Ended
	December 31,
	2018			2017
	(In Thousands)
Proceeds from sale of available-for-sale securities	$	51,319		$	10,585
Gross realized gain on sale of available-for-sale securities	$	191		$	77
Gross realized loss on sale of available-for-sale securities		(378	)		(40	)
Net realized (loss) gain on sale of available-for-sale securities	$	(187	)	$	37

Investments Classified by Contractual Maturity Date [Table Text Block]

	Amortized		Fair
	Cost		Value
	(In Thousands)
Due in one year or less	$	-	$	-
Due from one to five years		15,337		15,033
Due from five to ten years		12,084		12,039
Due after ten years		72,697		71,870
		100,118		98,942
Mortgage-backed securities		19,635		19,348
Collateralized mortgage obligations		24,229		23,875
Total	$	143,982	$	142,165

Schedule of Unrealized Loss on Investments [Table Text Block]

	December 31, 2018
	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	$	-	$	-		$	3,385	$	(44	)
Municipal obligations		17,887		(140	)		32,712		(850	)
Corporate obligations		2,890		(110	)		7,220		(190	)
Mortgage-backed securities and collateralized mortgage obligations		5,575		(98	)		22,559		(635	)
Asset-backed securities		8,200		(158	)		-		-
Total	$	34,552	$	(506	)	$	65,876	$	(1,719	)

	December 31, 2017
	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	$	2,493	$	(14	)	$	1,363	$	(23	)
Municipal obligations		15,404		(87	)		16,675		(342	)
Corporate obligations		7,643		(71	)		3,981		(28	)
Mortgage-backed securities and collateralized mortgage obligations		9,107		(81	)		21,653		(454	)
Asset-backed securities		-		-			-		-
Total	$	34,647	$	(253	)	$	43,672	$	(847	)