Fair Value Of Assets And Liabilities (Nonrecurring Fair Value Measurements) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	$ 223,483		$ 225,242		$ 223,483		$ 225,242
Net gains/(losses), Loans, net of unearned income	(5,963)	[1]	(5,257)	[1]	(15,013)	[1]	(17,759)	[1]
Net gains/(losses), Real estate acquired by foreclosure	(4,167)	[2]	(4,612)	[2]	(9,392)	[2]	(9,651)	[2]
Net gains/(losses), Other assets	(1,219)	[3]	(1,809)	[3]	(3,204)	[3]	(4,355)	[3]
Gain (loss) on financial assets measured on non-recurring basis	(11,789)		(15,138)		(27,277)		(36,385)
Level 2 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	8,923		9,372		8,923		9,372
Loans, net of unearned income, nonrecurring measurements	0	[1]	0	[1]	0	[1]	0	[1]
Real estate acquired by foreclosure, nonrecurring measurements	0	[2]	0	[2]	0	[2]	0	[2]
Other assets, nonrecurring measurements	0	[3]	0	[3]	0	[3]	0	[3]
Level 3 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	214,560		215,870		214,560		215,870
Loans, net of unearned income, nonrecurring measurements	106,864	[1]	169,448	[1]	106,864	[1]	169,448	[1]
Real estate acquired by foreclosure, nonrecurring measurements	48,916	[2]	78,792	[2]	48,916	[2]	78,792	[2]
Other assets, nonrecurring measurements	82,287	[3]	79,053	[3]	82,287	[3]	79,053	[3]
Non Recurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans, net of unearned income, nonrecurring measurements	106,864	[1]	169,448	[1]	106,864	[1]	169,448	[1]
Real estate acquired by foreclosure, nonrecurring measurements	48,916	[2]	78,792	[2]	48,916	[2]	78,792	[2]
Other assets, nonrecurring measurements	82,287	[3]	79,053	[3]	82,287	[3]	79,053	[3]
Level 1 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	0		0		0		0
Loans, net of unearned income, nonrecurring measurements	0	[1]	0	[1]	0	[1]	0	[1]
Real estate acquired by foreclosure, nonrecurring measurements	0	[2]	0	[2]	0	[2]	0	[2]
Other assets, nonrecurring measurements	0	[3]	0	[3]	0	[3]	0	[3]
First Mortgages [Member]
Fair Value Of Assets And Liabilities [Line Items]
Net gains/(losses), Loans held for sale - first mortgages	(452)		(3,458)		316		(4,618)
First Mortgages [Member] | Level 2 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	0		0		0		0
First Mortgages [Member] | Level 3 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	14,691		14,569		14,691		14,569
First Mortgages [Member] | Non Recurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	14,691		14,569		14,691		14,569
First Mortgages [Member] | Level 1 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	0		0		0		0
SBAs [Member]
Fair Value Of Assets And Liabilities [Line Items]
Net gains/(losses), Loans held for sale	12		(2)		16		(2)
SBAs [Member] | Level 2 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	53,807		49,641		53,807		49,641
SBAs [Member] | Level 3 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	0		0		0		0
SBAs [Member] | Non Recurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	53,807		49,641		53,807		49,641
SBAs [Member] | Level 1 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	$ 0		$ 0		$ 0		$ 0

[1] Represents carrying value of loans for which adjustments are based on the appraised value of the collateral. Write-downs on these loans are recognized as part of provision.

[2] Represents the fair value and related losses of foreclosed properties that were measured subsequent to their initial classification as foreclosed assets. Balance excludes foreclosed real estate related to government insured mortgages.

[3] Represents low income housing investments. 2012 also includes new market tax credit investments.