Available-For-Sale Securities (Tables)

3 Months Ended

Mar. 31, 2012

Available-For-Sale Securities [Abstract]

Summary Of The Available-For-Sale Securities Portfolio

	March 31, 2012
(Dollars in thousands)	Amortized Cost		Gross unrealized gains		Gross unrealized losses			Fair Value
U.S. Treasury	$	23,063	$	128	$	(2	)	$	23,189
U.S. Government agencies		682,847		4,082		(4,149	)		682,780
Municipal		67,970		1,963		(18	)		69,915
Corporate notes and other:
Financial issuers		148,492		2,569		(9,044	)		142,017
Other		26,475		329		(5	)		26,799
Mortgage-backed: (1)
Agency		846,380		11,866		(806	)		857,440
Non-agency CMOs		28,423		286		(1	)		28,708
Other equity securities		42,664		111		(4,279	)		38,496
Total available-for-sale securities	$	1,866,314	$	21,334	$	(18,304	)	$	1,869,344
	December 31, 2011
(Dollars in thousands)	Amortized Cost		Gross unrealized gains		Gross unrealized losses			Fair Value
U.S. Treasury	$	16,028	$	145	$	—		$	16,173
U.S. Government agencies		760,533		5,596		(213	)		765,916
Municipal		57,962		2,159		(23	)		60,098
Corporate notes and other:
Financial issuers		149,229		1,914		(8,499	)		142,644
Other		27,070		287		(65	)		27,292
Mortgage-backed: (1)
Agency		206,549		12,078		(15	)		218,612
Non-agency CMOs		29,767		175		(3	)		29,939
Other equity securities		37,595		48		(6,520	)		31,123
Total available-for-sale securities	$	1,284,733	$	22,402	$	(15,338	)	$	1,291,797

(1) Consisting entirely of residential mortgage-backed securities, none of which are subprime.

Schedule Of Available-For-Sale Securities Portfolio Continuous Unrealized Loss Position

	Continuous unrealized losses existing for less than 12 months					Continuous unrealized losses existing for greater than 12 months					Total
(Dollars in thousands)	Fair value		Unrealized losses			Fair value		Unrealized losses			Fair value		Unrealized losses
U.S. Treasury	$	1,998	$	(2	)	$	—	$	—		$	1,998	$	(2	)
U.S. Government agencies		349,222		(4,149	)		—		—			349,222		(4,149	)
Municipal		6,249		(18	)		—		—			6,249		(18	)
Corporate notes and other:
Financial issuers		48,590		(4,654	)		51,556		(4,390	)		100,146		(9,044	)
Other		1,085		(5	)		—		—			1,085		(5	)
Mortgage-backed:
Agency		657,358		(806	)		—		—			657,358		(806	)
Non-agency CMOs		907		(1	)		—		—			907		(1	)
Other equity securities		26,121		(4,279	)		—		—			26,121		(4,279	)
Total	$	1,091,530	$	(13,914	)	$	51,556	$	(4,390	)	$	1,143,086	$	(18,304	)

Schedule Of Available-For-Sale Investment Securities Gross Gains And Gross Losses Realized

	Three Months Ended March 31,
(Dollars in thousands)	2012			2011
Realized gains	$	828		$	106
Realized losses		(12	)		—
Net realized gains	$	816		$	106
Other than temporary impairment charges		—			—
Gains on available- for-sale securities, net	$	816		$	106
Proceeds from sales of available-for-sale securities	$	737,369		$	50,142

Contractual Maturities Of Available-For-Sale Securities

	March 31, 2012				December 31, 2011
(Dollars in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in one year or less	$	79,980	$	80,351	$	121,400	$	121,662
Due in one to five years		496,724		494,391		532,828		530,632
Due in five to ten years		106,545		105,856		95,279		95,508
Due after ten years		265,598		264,102		261,315		264,321
Mortgage-backed		874,803		886,148		236,316		248,551
Other equity securities		42,664		38,496		37,595		31,123
Total available-for-sale securities	$	1,866,314	$	1,869,344	$	1,284,733	$	1,291,797