INVESTMENT SECURITIES (Tables)

9 Months Ended

Sep. 30, 2018

Investments, Debt and Equity Securities [Abstract]

Schedule of amortized cost and related market value of investment securities available-for-sale

Investment Portfolio Composition. The amortized cost and related market value of investment securities available-for-sale and
held-to-maturity were as follows:
	September 30, 2018									December 31, 2017
	Amortized		Unrealized		Unrealized		Market		Amortized		Unrealized		Unrealized		Market
	Cost		Gains		Losses		Value		Cost		Gain		Losses		Value
Available for Sale
U.S. Government Treasury	$	272,335	$	-	$	4,222	$	268,113	$	237,505	$	-	$	2,164	$	235,341
U.S. Government Agency		153,087		625		621		153,091		144,324		727		407		144,644
States and Political Subdivisions		54,115		-		276		53,839		91,533		2		378		91,157
Mortgage-Backed Securities		922		50		-		972		1,102		83		-		1,185
Equity Securities(1)		8,228		-		-		8,228		8,584		-		-		8,584
Total	$	488,687	$	675	$	5,119	$	484,243	$	483,048	$	812	$	2,949	$	480,911
Held to Maturity
U.S. Government Treasury	$	35,103	$	-	$	702	$	34,401	$	98,256	$	-	$	441	$	97,815
States and Political Subdivisions		6,566		-		45		6,521		6,996		-		41		6,955
Mortgage-Backed Securities		186,254		207		3,852		182,609		111,427		22		1,212		110,237
Total	$	227,923	$	207	$	4,599	$	223,531	$	216,679	$	22	$	1,694	$	215,007
Total Investment Securities	$	716,610	$	882	$	9,718	$	707,774	$	699,727	$	834	$	4,643	$	695,918

Schedule of investment securities with maturity distribution based on contractual maturities

	Available for Sale				Held to Maturity
(Dollars in Thousands)	Amortized Cost		Market Value		Amortized Cost		Market Value
Due in one year or less	$	120,134	$	119,269	$	13,099	$	12,963
Due after one year through five years		232,224		228,353		28,570		27,959
Mortgage-Backed Securities		922		972		186,254		182,609
U.S. Government Agency		127,179		127,421		-		-
Equity Securities		8,228		8,228		-		-
Total	$	488,687	$	484,243	$	227,923	$	223,531

Schedule of investment securities with continuous unrealized loss position

	Less Than				Greater Than
	12 Months				12 Months				Total
	Market		Unrealized		Market		Unrealized		Market		Unrealized
(Dollars in Thousands)	Value		Losses		Value		Losses		Value		Losses
September 30, 2018
Available for Sale
U.S. Government Treasury	$	92,259	$	1,005	$	175,854	$	3,217	$	268,113	$	4,222
U.S. Government Agency		63,475		351		29,223		270		92,698		621
States and Political Subdivisions		34,928		164		14,831		112		49,759		276
Mortgage-Backed Securities		10		-		2		-		12		-
Total		190,672		1,520		219,910		3,599		410,582		5,119
Held to Maturity
U.S. Government Treasury		4,900		112		29,501		590		34,401		702
States and Political Subdivisions		6,026		38		495		7		6,521		45
Mortgage-Backed Securities		90,516		1,498		55,089		2,354		145,605		3,852
Total	$	101,442	$	1,648	$	85,085	$	2,951	$	186,527	$	4,599
December 31, 2017
Available for Sale
U.S. Government Treasury	$	155,443	$	963	$	79,900	$	1,201	$	235,343	$	2,164
U.S. Government Agency		45,737		150		25,757		257		71,494		407
States and Political Subdivisions		82,999		320		5,549		58		88,548		378
Mortgage-Backed Securities		2		-		-		-		2		-
Total		284,181		1,433		111,206		1,516		395,387		2,949
Held to Maturity
U.S. Government Treasury		77,861		298		14,939		143		92,800		441
States and Political Subdivisions		6,955		41		-		-		6,955		41
Mortgage-Backed Securities		56,030		469		30,216		743		86,246		1,212
Total	$	140,846	$	808	$	45,155	$	886	$	186,001	$	1,694