SECURITIES (Tables)

3 Months Ended

Mar. 31, 2017

Investments, Debt and Equity Securities [Abstract]

Amortized Cost and Fair Value of Securities Available for Sale and Held for Investment

The amortized cost and fair value of securities available for sale and held to maturity at March 31, 2017 and December 31, 2016 are summarized as follows:

	March 31, 2017
	Gross		Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(Dollars in thousands)	Cost		Gains		Losses		Value
SECURITIES AVAILABLE FOR SALE
U.S. Treasury securities and obligations
of U.S. Government Sponsored Entities	$	11,366	$	273	$	0	$	11,639
Mortgage-backed securities of U.S.
Government Sponsored Entities		290,933		706		(3,847)		287,792
Collateralized mortgage obligations of
U.S. Government Sponsored Entities		228,035		385		(4,778)		223,642
Commercial mortgage backed securities of
U.S. Government Sponsored Entities		22,328		369		(21)		22,676
Private mortgage backed securities		32,816		0		(651)		32,165
Private collateralized mortgage obligations		61,173		548		(647)		61,074
Collateralized loan obligations		101,883		917		(71)		102,729
Obligations of state and political subdivisions		62,989		709		(860)		62,838
Corporate and other debt securities		72,480		410		(341)		72,549
Private commercial mortgage backed securities		32,403		140		(372)		32,171
	$	916,406	$	4,457	$	(11,588)	$	909,275
SECURITIES HELD TO MATURITY
Mortgage-backed securities of
U.S. Government Sponsored Entities	$	188,402	$	871	$	(1,332)	$	187,941
Collateralized mortgage obligations of
U.S. Government Sponsored Entities		140,786		395		(2,041)		139,140
Commercial mortgage backed securities of
U.S. Government Sponsored Entities		17,399		383		(23)		17,759
Collateralized loan obligations		26,904		430		(26)		27,308
Private collateralized mortgage obligations		6,166		4		(86)		6,084
	$	379,657	$	2,083	$	(3,508)	$	378,232

	December 31, 2016
	Gross		Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(Dollars in thousands)	Cost		Gains		Losses		Value
SECURITIES AVAILABLE FOR SALE
U.S. Treasury securities and obligations
of U.S. Government Sponsored Entities	$	12,073	$	255	$	0	$	12,328
Mortgage-backed securities of U.S.
Government Sponsored Entities		287,726		585		(4,823)		283,488
Collateralized mortgage obligations of
U.S. Government Sponsored Entities		238,805		314		(5,065)		234,054
Commercial mortgage backed securities of
U.S. Government Sponsored Entities		22,351		222		(28)		22,545
Private mortgage backed securities		32,780		0		(791)		31,989
Private collateralized mortgage obligations		67,542		563		(816)		67,289
Collateralized loan obligations		124,716		838		(665)		124,889
Obligations of state and political subdivisions		63,161		622		(895)		62,888
Corporate and other debt securities		74,121		257		(517)		73,861
Private commercial mortgage backed securities		37,534		111		(473)		37,172
	$	960,809	$	3,767	$	(14,073)	$	950,503
SECURITIES HELD TO MATURITY
Mortgage-backed securities of
U.S. Government Sponsored Entities	$	159,941	$	704	$	(1,243)	$	159,402
Collateralized mortgage obligations of
U.S. Government Sponsored Entities		147,208		386		(2,630)		144,964
Commercial mortgage backed securities of
U.S. Government Sponsored Entities		17,375		233		(74)		17,534
Collateralized loan obligations		41,547		430		(314)		41,663
Private collateralized mortgage obligations		6,427		0		(109)		6,318
	$	372,498	$	1,753	$	(4,370)	$	369,881

Amortized Cost and Fair Value of Securities by Contractual Maturity

The amortized cost and fair value of securities at March 31, 2017, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.

	Held to Maturity				Available for Sale
	Amortized		Fair		Amortized		Fair
(Dollars in thousands)	Cost		Value		Cost		Value
Due in less than one year	$	0	$	0	$	9,533	$	9,734
Due after one year through
five years		0		0		77,180		77,564
Due after five years
through ten years		26,904		27,308		119,950		121,095
Due after ten years		0		0		31,350		30,640
		26,904		27,308		238,013		239,033
Mortgage-backed
securities of U.S. Government
Sponsored Entities		188,402		187,941		290,933		287,792
Collateralized mortgage
obligations of U.S. Government
Sponsored Entities		140,786		139,140		228,035		223,642
Commercial mortgage-backed
securities of U.S. Government
Sponsored Entities		17,399		17,759		22,328		22,676
Private mortgage backed securities		6,166		6,084		32,816		32,165
Private collateralized mortgage
obligations		0		0		61,173		61,074
Other debt securities		0		0		10,705		10,722
Private commercial mortgage
backed securities		0		0		32,403		32,171
	$	379,657	$	378,232	$	916,406	$	909,275

Schedule of Unrealized Loss and Fair Value on Investments

The tables below indicate the amount of securities with unrealized losses and the period of time for which these losses were outstanding at March 31, 2017 and December 31, 2016, respectively.

	March 31, 2017
	Less than 12 months				12 months or longer				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(Dollars in thousands)	Value		Losses		Value		Losses		Value		Losses
Mortgage-backed securties of
U.S. Government Sponsored Entities	$	275,646	$	(4,550)	$	41,533	$	(629)	$	317,179	$	(5,179)
Collateralized mortgage obligations of
U.S. Government Sponsored Entities		159,951		(3,315)		124,465		(3,504)		284,416		(6,819)
Commercial mortgage-backed securties of
U.S. Government Sponsored Entities		7,988		(44)		0		0		7,988		(44)
Private mortage backed securities		0		0		36,879		(737)		36,879		(737)
Private collateralized mortgage obligations		1,721		(5)		33,735		(642)		35,456		(647)
Collateralized loan obligations		0		0		18,207		(97)		18,207		(97)
Obligations of state and political subdivisions		28,536		(718)		10,774		(142)		39,310		(860)
Corporate and other debt securities		13,763		(332)		4,828		(9)		18,591		(341)
Private commercial mortgage backed
securities		12,041		(291)		4,056		(81)		16,097		(372)
Total temporarily impaired securities	$	499,646	$	(9,255)	$	274,477	$	(5,841)	$	774,123	$	(15,096)

	December 31, 2016
	Less than 12 months				12 months or longer				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(Dollars in thousands)	Value		Losses		Value		Losses		Value		Losses
Mortgage-backed securties of
U.S. Government Sponsored Entities	$	327,759	$	(5,991)	$	5,387	$	(75)	$	333,146	$	(6,066)
Collateralized mortgage obligations of
U.S. Government Sponsored Entities		234,175		(5,599)		58,912		(2,096)		293,087		(7,695)
Commercial mortgage-backed securties of
U.S. Government Sponsored Entities		7,934		(102)		0		0		7,934		(102)
Private mortage backed securities		0		0		36,848		(900)		36,848		(900)
Private collateralized mortgage obligations		1,460		0		38,417		(816)		39,877		(816)
Collateralized loan obligations		8,152		(41)		51,694		(938)		59,846		(979)
Obligations of state and political subdivisions		39,321		(895)		0		0		39,321		(895)
Corporate and other debt securities		33,008		(517)		0		0		33,008		(517)
Private commercial mortgage backed
securities		12,667		(306)		7,139		(167)		19,806		(473)
Total temporarily impaired securities	$	664,476	$	(13,451)	$	198,397	$	(4,992)	$	862,873	$	(18,443)