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INVESTMENT SECURITIES (Tables)

12 Months Ended

Dec. 31, 2013

INVESTMENT SECURITIES

Summary of investment securities portfolio

					Gross			Gross			Estimated
		Amortized			unrealized			unrealized			fair
		cost			gains			losses			value
		(Dollars in thousands)
2013
Held to Maturity:
Mortgage-backed securities - U.S. Government sponsored entities		$	252,047		$	—		$	(13,342	)	$	238,705

Available for Sale:
Debt securities:
States and political subdivisions		$	191,158		$	305		$	(12,106	)	$	179,357
Corporate securities		157,337			1,878			(1,120		)	158,095
Mortgage-backed securities:
U.S. Government sponsored entities		936,144			7,085			(15,603		)	927,626
Non-agency collateralized mortgage obligations		147,902			81			(5,937		)	142,046
Other		755			120			—			875
Total		$	1,433,296		$	9,469		$	(34,766	)	$	1,407,999

2012
Held to Maturity:
Mortgage-backed securities - U.S. Government sponsored entities		$	161,848		$	695		$	(15	)	$	162,528

Available for Sale:
Debt securities:
U.S. Government sponsored entities		$	278,198		$	2,741		$	—		$	280,939
States and political subdivisions		184,274			2,831			(1,194		)	185,911
Corporate securities		125,649			2,360			(63		)	127,946
Mortgage-backed securities - U.S. Government sponsored entities		925,018			17,548			(1,523		)	941,043
Other		866			40			—			906
Total		$	1,514,005		$	25,520		$	(2,780	)	$	1,536,745

Schedule of amortized cost and estimated fair value of investment securities by contractual maturity

		December 31, 2013
		Amortized Cost			Estimated Fair Value
		(Dollars in thousands)
Held to Maturity
Mortgage-backed securities		$	252,047		$	238,705

Available for Sale
Due in one year or less		$	—		$	—
Due after one year through five years		87,349			88,819
Due after five years through ten years		134,337			131,223
Due after ten years		126,809			117,410
Mortgage-backed securities		1,084,046			1,069,672
Other		755			875
Total		$	1,433,296		$	1,407,999

Schedule of investment securities in an unrealized loss position

		Less than 12 months						12 months or longer						Total
					Unrealized						Unrealized						Unrealized
Description of Securities		Fair Value			Losses			Fair Value			Losses			Fair Value			Losses
		(Dollars in thousands)
At December 31, 2013:
Debt securities:
States and political subdivisions		$	137,176		$	(8,985	)	$	32,747		$	(3,121	)	$	169,923		$	(12,106	)
Corporate securities		75,368			(1,120		)	—			—			75,368			(1,120		)

Mortgage-backed securities:
U.S. Government sponsored entities		909,585			(28,386		)	4,848			(559		)	914,433			(28,945		)
Non-agency collateralized mortgage obligations		129,991			(5,937		)	—			—			129,991			(5,937		)
Total temporarily impaired securities		$	1,252,120		$	(44,428	)	$	37,595		$	(3,680	)	$	1,289,715		$	(48,108	)

At December 31, 2012:
Debt securities:
States and political subdivisions		$	73,128		$	(1,194	)	$	—		$	—		$	73,128		$	(1,194	)
Corporate securities		23,205			(63		)	—			—			23,205			(63		)

Mortgage-backed securities:
U.S. Government sponsored entities		206,981			(1,538		)	—			—			206,981			(1,538		)
Total temporarily impaired securities		$	303,314		$	(2,795	)	$	—		$	—		$	303,314		$	(2,795	)