INVESTMENT SECURITIES (Tables)

3 Months Ended

Mar. 31, 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:
	March 31, 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	$	240,933	$	5	$	3,361	$	237,577	$	237,505	$	-	$	2,164	$	235,341
U.S. Government Agency		149,074		667		670		149,071		144,324		727		407		144,644
States and Political Subdivisions		76,486		-		343		76,143		91,533		2		378		91,157
Mortgage-Backed Securities		1,082		77		-		1,159		1,102		83		-		1,185
Equity Securities(1)		7,886		-		-		7,886		8,584		-		-		8,584
Total	$	475,461	$	749	$	4,374	$	471,836	$	483,048	$	812	$	2,949	$	480,911
Held to Maturity
U.S. Government Treasury	$	78,184	$	-	$	664	$	77,520	$	98,256	$	-	$	441	$	97,815
States and Political Subdivisions		6,940		-		42		6,898		6,996		-		41		6,955
Mortgage-Backed Securities		140,428		39		2,675		137,792		111,427		22		1,212		110,237
Total	$	225,552	$	39	$	3,381	$	222,210	$	216,679	$	22	$	1,694	$	215,007
Total Investment Securities	$	701,013	$	788	$	7,755	$	694,046	$	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	$	85,838	$	85,522	$	43,838	$	43,763
Due after one through five years		265,050		261,329		41,286		40,655
Mortgage-Backed Securities		1,082		1,159		140,428		137,792
U.S. Government Agency		115,605		115,940		-		-
Equity Securities		7,886		7,886		-		-
Total	$	475,461	$	471,836	$	225,552	$	222,210

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
March 31, 2018
Available for Sale
U.S. Government Treasury	$	139,880	$	1,820	$	87,734	$	1,541	$	227,614	$	3,361
U.S. Government Agency		55,536		376		28,120		294		83,656		670
States and Political Subdivisions		68,011		289		5,532		54		73,543		343
Mortgage-Backed Securities		2		-		-		-		2		-
Total		263,429		2,485		121,386		1,889		384,815		4,374
Held to Maturity
U.S. Government Treasury		47,622		454		29,898		210		77,520		664
States and Political Subdivisions		6,633		42		-		-		6,633		42
Mortgage-Backed Securities		94,379		1,560		28,226		1,115		122,605		2,675
Total	$	148,634	$	2,056	$	58,124	$	1,325	$	206,758	$	3,381
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