INVESTMENTS (Tables)

3 Months Ended

Mar. 31, 2019

Amortized cost and Estimated fair values of Investments Available-for-sale

			March 31, 2019								December 31, 2018
					Gross		Gross		Estimated				Gross		Gross		Estimated
			Amortized		Unrealized		Unrealized		Fair		Amortized		Unrealized		Unrealized		Fair
(In thousands)			Cost		Gains		Losses		Value		Cost		Gains		Losses		Value
U.S. treasuries and government agencies			$	314,928	$	546	$	(1,886)	$	313,588	$	300,338	$	370	$	(4,030)	$	296,678
State and municipal				261,126		3,491		(37)		264,580		280,725		2,080		(781)		282,024
Mortgage-backed and asset-backed				340,657		1,037		(3,597)		338,097		355,267		653		(7,405)		348,515
Corporate debt				9,100		287		-		9,387		9,100		140		-		9,240
Trust preferred				310		-		-		310		310		-		-		310
	Total debt securities			926,121		5,361		(5,520)		925,962		945,740		3,243		(12,216)		936,767
Marketable equity securities				568		-		-		568		568		-		-		568
		Total investments available-for-sale	$	926,689	$	5,361	$	(5,520)	$	926,530	$	946,308	$	3,243	$	(12,216)	$	937,335

Other Equity Securities

(In thousands)		March 31, 2019		December 31, 2018
Federal Reserve Bank stock		$	22,496	$	22,456
Federal Home Loan Bank of Atlanta stock			38,273		50,933
	Total equity securities	$	60,769	$	73,389

Available-for-Sale Securities

Gross Unrealized Losses and Fair Value by Length of Time

		March 31, 2019
						Continuous Unrealized
						Losses Existing for:
		Number								Total
		of				Less than		More than		Unrealized
(Dollars in thousands)		Securities		Fair Value		12 months		12 months		Losses
U.S. treasuries and government agencies			27	$	186,675	$	204	$	1,682	$	1,886
State and municipal			9		8,724		-		37		37
Mortgage-backed and asset-backed			78		254,545		23		3,574		3,597
	Total		114	$	449,944	$	227	$	5,293	$	5,520

		December 31, 2018
						Continuous Unrealized
						Losses Existing for:
		Number								Total
		of				Less than		More than		Unrealized
(Dollars in thousands)		Securities		Fair Value		12 months		12 months		Losses
U.S. treasuries and government agencies			33	$	194,135	$	452	$	3,578	$	4,030
State and municipal			80		78,232		569		212		781
Mortgage-backed and asset-backed			110		308,254		1,592		5,813		7,405
	Total		223	$	580,621	$	2,613	$	9,603	$	12,216

Amortized Cost and Estimated Fair Values of Investment Securities

		March 31, 2019				December 31, 2018
				Estimated				Estimated
		Amortized		Fair		Amortized		Fair
(In thousands)		Cost		Value		Cost		Value
Due in one year or less		$	57,794	$	58,089	$	63,482	$	63,747
Due after one year through five years			283,422		284,235		277,297		276,830
Due after five years through ten years			190,435		191,473		212,825		210,386
Due after ten years			394,470		392,165		392,136		385,804
	Total debt securities available for sale	$	926,121	$	925,962	$	945,740	$	936,767