Investment Securities (Tables)

9 Months Ended

Sep. 30, 2011

Investment Securities [Abstract]

Amortized Cost, Gross Unrealized Gains, Gross Unrealized Losses, And Fair Values Of Investment Securities

	September 30, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(In thousands)
Securities Held-to-Maturity
U.S. government sponsored entities	$	99,955	$	1,818	$	—	$	101,773
State and municipal securities		129,710		3,904		216		133,398
Mortgage-backed securities		996,101		45,221		—		1,041,322
Corporate debt securities		9,970		—		537		9,433
Total securities held-to-maturity	$	1,235,736	$	50,943	$	753	$	1,285,926
Securities Available-for-Sale
U.S. treasury securities	$	—	$	—	$	—	$	—
U.S. government sponsored entities		350,015		1,516		83		351,448
State and municipal securities		1,870		25		8		1,887
Mortgage-backed securities		210,469		11,057		508		221,018
Collateralized mortgage obligations		18,194		611		120		18,685
Asset-backed securities		177		—		6		171
Corporate debt securities		432,582		534		25,687		407,429
Mutual funds		6,000		79		—		6,079
Preferred stock of government sponsored entities		569		1,783		—		2,352
Trust preferred securities		45,501		598		25		46,074
Other equity securities		1,468		760		—		2,228
Total securities available-for-sale	$	1,066,845	$	16,963	$	26,437	$	1,057,371
Total investment securities	$	2,302,581	$	67,906	$	27,190	$	2,343,297

	December 31, 2010
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(In thousands)
Securities Held-to-Maturity
U.S. government sponsored entities	$	99,921	$	2,639	$	—	$	102,560
State and municipal securities		130,107		—		8,946		121,161
Mortgage-backed securities		600,107		5,230		1,653		603,684
Corporate debt securities		9,967		—		13		9,954
Total securities held-to-maturity	$	840,102	$	7,869	$	10,612	$	837,359
Securities Available-for-Sale
U.S. treasury securities	$	125,573	$	—	$	6,745	$	118,828
U.S. government sponsored entities		830,269		1,653		6,840		825,082
State and municipal securities		1,875		—		157		1,718
Mortgage-backed securities		627,574		14,854		123		642,305
Collateralized mortgage obligations		24,719		590		115		25,194
Asset-backed securities		245		—		5		240
Corporate debt securities		374,489		1,374		6,438		369,425
Mutual funds		4,000		—		73		3,927
Preferred stock of government sponsored entities		569		150		—		719
Trust preferred securities		14,549		58		170		14,437
Other equity securities		1,468		224		—		1,692
Total securities available-for-sale	$	2,005,330	$	18,903	$	20,666	$	2,003,567
Total investment securities	$	2,845,432	$	26,772	$	31,278	$	2,840,926

Amortized Cost And Fair Value Of Investment Securities By Contractual Maturities

	Securities Available-for-Sale				Securities Held-to-Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In thousands)
Due in one year or less	$	10,081	$	10,104	$	99,955	$	101,773.00
Due after one year through five years		183,381		181,749		—		—
Due after five years through ten years		687,624		671,599		24,827		24,940
Due after ten years (1)		185,759		193,919		1,110,954		1,159,213
Total	$	1,066,845	$	1,057,371	$	1,235,736	$	1,285,926

(1) Equity securities are reported in this category

Fair Value, Unrealized Losses, And Number Of Issuances Of The Temporarily Impaired Securities

	As of September 30, 2011
	Temporarily Impaired Securities
	Less than 12 months						12 months or longer						Total
	Fair Value		Unrealized Losses		No. of Issuances		Fair Value		Unrealized Losses		No. of Issuances		Fair Value		Unrealized Losses		No. of Issuances
	(Dollars in thousands)
Securities Held-to-Maturity
State and municipal securities	$	8,469	$	19		2	$	8,354	$	197		6	$	16,823	$	216		8
Corporate debt securities		9,433		537		1		—		—		—		9,433		537		1
Total securities held-to-maturity	$	17,902	$	556		3	$	8,354	$	197		6	$	26,256	$	753		9
Securities Available-for-Sale
U.S. government sponsored entities	$	99,932	$	83		1	$	—	$	—		—	$	99,932	$	83		1
State and municipal securities		—		—		—		1,358		8		1		1,358		8		1
Mortgage-backed securities		784		5		7		149		2		3		933		7		10
Mortgage-backed securities-Non-agency		—		—		—		6,856		501		2		6,856		501		3
Collateralized mortgage obligations		—		—		—		712		120		4		712		120		4
Asset-backed securities		—		—		—		171		6		1		171		6		1
Corporate debt securities		204,736		13,191		19		122,902		12,496		14		327,638		25,687		33
Trust preferred securities		8,312		25		4		—		—		—		8,312		25		4
Total securities available-for-sale	$	313,764	$	13,304		31	$	132,148	$	13,133		25	$	445,912	$	26,437		56
Total investment securities	$	331,666	$	13,860		34	$	140,502	$	13,330		31	$	472,168	$	27,190		65
	As of December 31, 2010
	Temporarily Impaired Securities
	Less than 12 months						12 months or longer						Total
	Fair Value		Unrealized Losses		No. of Issuances		Fair Value		Unrealized Losses		No. of Issuances		Fair Value		Unrealized Losses		No. of Issuances
	(Dollars in thousands)
Securities Held-to-Maturity
State and municipal securities	$	121,161	$	8,946		122		—		—		—	$	121,161	$	8,946		122
Mortgage-backed securities		89,439		1,653		2		—		—		—		89,439		1,653		2
Corporate debt securities		9,954		13		1		—		—		—		9,954		13		1
Total securities held-to-maturity	$	220,554	$	10,612		125	$	—	$	—		—	$	220,554	$	10,612		125
Securities Available-for-Sale
U.S. Treasury securities	$	118,828	$	6,745		5	$	—	$	—		—	$	118,828	$	6,745		5
U.S. government sponsored entities		578,118		6,840		12		—		—		—		578,118		6,840		12
State and municipal securities		1,718		157		2		—		—		—		1,718		157		2
Mortgage-backed securities		354		4		7		32		1		1		386		5		8
Mortgage-backed securities-Non-agency		—		—		—		10,127		118		3		10,127		118		3
Collateralized mortgage obligations		—		—		—		887		115		4		887		115		4
Asset-backed securities		—		—		—		240		5		1		240		5		1
Corporate debt securities		310,630		6,438		30		—		—		—		310,630		6,438		30
Mutual funds		3,927		73		1		—		—		—		3,927		73		1
Trust preferred securities		10,384		170		2		—		—		—		10,384		170		2
Total securities available-for-sale	$	1,023,959	$	20,427		59	$	11,286	$	239		9	$	1,035,245	$	20,666		68
Total investment securities	$	1,244,513	$	31,039		184	$	11,286	$	239		9	$	1,255,799	$	31,278		193