INVESTMENTS (Tables)

12 Months Ended

Dec. 31, 2013

Summary of Held-To-Maturity and Available-For-Sale Investment Securities

The following is a summary of held-to-maturity and available-for-sale investment securities as of December 31, 2013:

	Held-to-Maturity									Available-for-Sale
(Dollars in thousands)	Amortized Cost		Unrealized Gain		Unrealized Loss			Market Value		Amortized Cost		Unrealized Gain		Unrealized Loss			Market Value
U.S. Treasuries	$	0	$	0	$	0		$	0	$	97	$	0	$	(7	)	$	90
Securities of U.S. government agencies and corporations	18,981		0		(791		)	18,190		9,980		0		(404		)	9,576
Mortgage-backed securities	775,025		1,337		(12,229		)	764,133		678,267		5,372		(28,593		)	655,046
Obligations of state and other political subdivisions	25,788		152		(1,039		)	24,901		33,410		10		(3,097		)	30,323
Asset-backed securities	0		0		0			0		114,209		1		(616		)	113,594
Other securities	17,478		283		0			17,761		109,089		262		(4,379		)	104,972
Total	$	837,272	$	1,772	$	(14,059	)	$	824,985	$	945,052	$	5,645	$	(37,096	)	$	913,601

The following is a summary of held-to-maturity and available-for-sale investment securities as of December 31, 2012:

	Held-to-Maturity									Available-for-Sale
	Amortized		Unrealized		Unrealized			Market		Amortized		Unrealized		Unrealized			Market
(Dollars in thousands)	Cost		Gain		Loss			Value		Cost		Gain		Loss			Value
Securities of U.S. government agencies and corporations	$	20,512	$	679	$	0		$	21,191	$	15,562	$	333	$	0		$	15,895
Mortgage-backed securities	740,891		8,077		(1,290		)	747,678		854,150		14,564		(1,485		)	867,229
Obligations of state and other political subdivisions	9,352		265		(12		)	9,605		35,913		169		(84		)	35,998
Asset-backed securities	0		0		0			0		57,000		90		(1		)	57,089
Other securities	0		0		0			0		54,479		1,569		(163		)	55,885
Total	$	770,755	$	9,021	$	(1,302	)	$	778,474	$	1,017,104	$	16,725	$	(1,733	)	$	1,032,096

Summary of Investment Securities by Estimated Maturity

	Held-to-Maturity				Available-for-Sale
(Dollars in thousands)	Amortized Cost		Market Value		Amortized Cost		Market Value
Due in one year or less	$	216	$	219	$	6,819	$	7,027
Due after one year through five years	378,932		375,323		279,035		276,750
Due after five years through ten years	322,455		314,375		314,854		303,477
Due after ten years	135,669		135,068		344,344		326,347
Total	$	837,272	$	824,985	$	945,052	$	913,601

Age of Gross Unrealized Losses and Associated Fair Value by Investment Category

The following tables provide the fair value and gross unrealized losses on investment securities in an unrealized loss position, aggregated by investment category and the length of time the individual securities have been in a continuous unrealized loss position:

	December 31, 2013
	Less than 12 Months					12 Months or More					Total
(Dollars in thousands)	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Securities of U.S. government agencies and corporations	$	27,851	$	(970	)	$	0	$	0		$	27,851	$	(970	)
Mortgage-backed securities	966,718		(32,432		)	108,929		(6,101		)	1,075,647		(38,533		)
Obligations of state and other political subdivisions	66,502		(5,294		)	1,935		(46		)	68,437		(5,340		)
Asset-backed securities	93,355		(616		)	0		0			93,355		(616		)
Other securities	54,866		(2,142		)	7,798		(561		)	62,664		(2,703		)
Total	$	1,209,292	$	(41,454	)	$	118,662	$	(6,708	)	$	1,327,954	$	(48,162	)

	December 31, 2012
	Less than 12 Months					12 Months or More					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Dollars in thousands)	Value		Loss			Value		Loss			Value		Loss
Mortgage-backed securities	$	240,641	$	(1,635	)	$	25,513	$	(405	)	$	266,154	$	(2,040	)
Obligations of state and other political subdivisions	21,341		(96		)	0		0			21,341		(96		)
Asset-backed securities	9,999		(1		)	0		0			9,999		(1		)
Other securities	8,454		(163		)	0		0			8,454		(163		)
Total	$	280,435	$	(1,895	)	$	25,513	$	(405	)	$	305,948	$	(2,300	)