INVESTMENTS (Tables)

6 Months Ended

Jun. 30, 2012

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 June 30, 2012.

	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
Securities of U.S. government agencies and corporations	$	21,080	$	259	$	0		$	21,339	$	25,773	$	344	$	0		$	26,117
Mortgage-backed securities	850,309		5,900		(2,135		)	854,074		622,251		16,823		(107		)	638,967
Obligations of state and other political subdivisions	2,149		270		0			2,419		7,571		93		(1		)	7,663
Other securities	0		0		0			0		51,108		879		(216		)	51,771
Total	$	873,538	$	6,429	$	(2,135	)	$	877,832	$	706,703	$	18,139	$	(324	)	$	724,518

The following is a summary of held-to-maturity and available-for-sale investment securities as of December 31, 2011.

	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	$	0	$	0	$	0	$	0	$	45,757	$	433	$	0		$	46,190
Mortgage-backed securities	90		2		0		92		1,344,015		21,394		(2,031		)	1,363,378
Obligations of state and other political subdivisions	2,574		227		0		2,801		9,270		121		(5		)	9,386
Other securities	0		0		0		0		22,448		530		(86		)	22,892
Total	$	2,664	$	229	$	0	$	2,893	$	1,421,490	$	22,478	$	(2,122	)	$	1,441,846

Summary of Investment Securities by Estimated Maturity

The following is a summary of investment securities by estimated maturity as of June 30, 2012.

	Held-to-Maturity				Available-for-Sale
(Dollars in thousands)	Amortized Cost		Market Value		Amortized Cost		Market Value
Due in one year or less	$	699	$	713	$	56,125	$	56,038
Due after one year through five years	602,928		603,210		548,361		562,663
Due after five years through ten years	208,808		211,892		69,761		71,627
Due after ten years	61,103		62,017		32,456		34,190
Total	$	873,538	$	877,832	$	706,703	$	724,518

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

The following tables present the age of gross unrealized loss and associated fair value by investment category.

	June 30, 2012
	Less than 12 Months					12 Months or More					Total
(Dollars in thousands)	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Mortgage-backed securities	$	245,450	$	(2,164	)	$	26,070	$	(78	)	$	271,520	$	(2,242	)
Obligations of state and other political subdivisions	0		0			401		(1		)	401		(1		)
Other securities	31,001		(216		)	17		0			31,018		(216		)
Total	$	276,451	$	(2,380	)	$	26,488	$	(79	)	$	302,939	$	(2,459	)

	December 31, 2011
	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	$	343,883	$	(1,938	)	$	29,562	$	(93	)	$	373,445	$	(2,031	)
Obligations of state and other political subdivisions	0		0			2,278		(5		)	2,278		(5		)
Other securities	9,133		(86		)	17		0			9,150		(86		)
Total	$	353,016	$	(2,024	)	$	31,857	$	(98	)	$	384,873	$	(2,122	)