Note 7 - Investment Securities (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

Marketable Securities [Table Text Block]

June 30, 2018 (In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available For Sale
Obligations of U.S. government-sponsored entities	$	34,676	$	5	$	857	$	33,824
Obligations of states and political subdivisions		105,616		263		2,450		103,429
Mortgage-backed securities – residential		178,426		242		5,830		172,838
Mortgage-backed securities – commercial		49,387		-		2,478		46,909
Asset-backed securities		15,493		32		26		15,499
Corporate debt securities		7,495		22		37		7,480
Total securities – available for sale	$	391,093	$	564	$	11,678	$	379,979
Held To Maturity
Obligations of states and political subdivisions	$	2,837	$	31	$	-	$	2,868

December 31, 2017 (In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available For Sale
Obligations of U.S. government-sponsored entities	$	43,601	$	44	$	437	$	43,208
Obligations of states and political subdivisions		114,960		562		1,273		114,249
Mortgage-backed securities – residential		195,605		523		2,735		193,393
Mortgage-backed securities – commercial		50,518		42		1,208		49,352
Asset-backed securities		15,569		9		4		15,574
Corporate debt securities		7,578		1		37		7,542
Total securities – available for sale	$	427,831	$	1,181	$	5,694	$	423,318
Held To Maturity
Obligations of states and political subdivisions	$	3,364	$	114	$	-	$	3,478

Investments Classified by Contractual Maturity Date [Table Text Block]

	Available For Sale				Held To Maturity
	Amortized		Estimated		Amortized		Estimated
June 30, 2018 (In thousands)	Cost		Fair Value		Cost		Fair Value
Due in one year or less	$	19,847	$	19,828	$	-	$	-
Due after one year through five years		53,443		52,717		-		-
Due after five years through ten years		51,363		49,493		732		748
Due after ten years		38,627		38,194		2,105		2,120
Mortgage-backed securities		227,813		219,747		-		-
Total	$	391,093	$	379,979	$	2,837	$	2,868

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

	Three Months Ended					Six Months Ended
	June 30,					June 30,
(In thousands)	2018		2017			2018		2017
Gross realized gains	$	-	$	-		$	-	$	-
Gross realized losses		-		1			-		10
Net realized loss	$	-	$	(1	)	$	-	$	(10	)

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less than 12 Months				12 Months or More				Total
June 30, 2018 (In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Obligations of U.S. government-sponsored entities	$	10,175	$	282	$	22,987	$	575	$	33,162	$	857
Obligations of states and political subdivisions		50,261		1,051		33,147		1,399		83,408		2,450
Mortgage-backed securities – residential		74,287		2,010		90,087		3,820		164,374		5,830
Mortgage-backed securities – commercial		14,509		611		32,400		1,867		46,909		2,478
Asset-backed securities		3,729		26		-		-		3,729		26
Corporate debt securities		3,102		34		248		3		3,350		37
Total	$	156,063	$	4,014	$	178,869	$	7,664	$	334,932	$	11,678

	Less than 12 Months				12 Months or More				Total
December 31, 2017 (In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Obligations of U.S. government-sponsored entities	$	11,544	$	43	$	25,298	$	394	$	36,842	$	437
Obligations of states and political subdivisions		40,402		413		33,965		860		74,367		1,273
Mortgage-backed securities – residential		77,312		481		99,986		2,254		177,298		2,735
Mortgage-backed securities – commercial		7,758		62		34,139		1,146		41,897		1,208
Asset-backed securities		1,166		4		-		-		1,166		4
Corporate debt securities		7,251		36		200		1		7,451		37
Total	$	145,433	$	1,039	$	193,588	$	4,655	$	339,021	$	5,694