Note 3 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Marketable Securities [Table Text Block]

	December 31, 2019
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In Thousands)
Available-for-sale:
U.S. government and agency obligations	$	13,318	$	279	$	-		$	13,597
Municipal obligations		50,699		1,616		(93	)		52,222
Corporate obligations		8,356		40		(8	)		8,388
Mortgage-backed securities		9,460		56		(21	)		9,495
Collateralized mortgage obligations		33,129		297		(92	)		33,334
Asset-backed securities		10,110		-		(271	)		9,839
Total	$	125,072	$	2,288	$	(485	)	$	126,875

	December 31, 2018
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In Thousands)
Available-for-sale:
U.S. government and agency obligations	$	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

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

	Years Ended
	December 31,
	2019			2018
	(In Thousands)
Proceeds from sale of available-for-sale securities	$	58,027		$	51,319
Gross realized gain on sale of available-for-sale securities	$	576		$	191
Gross realized loss on sale of available-for-sale securities		(507	)		(378	)
Net realized gain (loss) on sale of available-for-sale securities	$	69		$	(187	)

Investments Classified by Contractual Maturity Date [Table Text Block]

	December 31, 2019
	Amortized		Fair
	Cost		Value
	(In Thousands)
Due in one year or less	$	9,116	$	9,134
Due from one to five years		10,005		10,085
Due from five to ten years		8,738		9,078
Due after ten years		54,624		55,749
		82,483		84,046
Mortgage-backed securities		9,460		9,495
Collateralized mortgage obligations		33,129		33,334
Total	$	125,072	$	126,875

Schedule of Unrealized Loss on Investments [Table Text Block]

	December 31, 2019
	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 obligations	$	-	$	-		$	-	$	-
Municipal obligations		11,142		(93	)		-		-
Corporate obligations		-		-			992		(8	)
Mortgage-backed securities and collateralized mortgage obligations		9,868		(35	)		7,968		(78	)
Asset-backed securities		940		(33	)		8,900		(238	)
Total	$	21,950	$	(161	)	$	17,860	$	(324	)

	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 obligations	$	-	$	-		$	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	)