Fair Value Of Assets And Liabilities (Nonrecurring Fair Value Measurements) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	$ 232,684		$ 223,158
Loans, net of unearned income, nonrecurring measurements	125,223	[1]	120,938	[1]
Real estate acquired by foreclosure, nonrecurring measurements	32,655	[2]	59,132	[2]
Other assets, nonrecurring measurements	74,109	[3]	86,794	[3]
Net gains/(losses), Loans, net of unearned income	(206)	[1]	(11,387)	[1]
Net gains/(losses), Real estate acquired by foreclosure	(1,018)	[2]	(5,225)	[2]
Net gains/(losses), Other assets	(1,609)		(1,986)
Gain (loss) on financial assets measured on non-recurring basis	(2,749)		(17,826)
Fair Value Inputs Level2 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	0		8,555
Loans, net of unearned income, nonrecurring measurements	0	[1]	0	[1]
Real estate acquired by foreclosure, nonrecurring measurements	0	[2]	0	[2]
Other assets, nonrecurring measurements	0	[3]	0	[3]
Fair Value Inputs Level3 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	232,684		214,603
Loans, net of unearned income, nonrecurring measurements	125,223	[1]	120,938	[1]
Real estate acquired by foreclosure, nonrecurring measurements	32,655	[2]	59,132	[2]
Other assets, nonrecurring measurements	74,109	[3]	86,794	[3]
Fair Value Inputs Level1 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	0		0
Loans, net of unearned income, nonrecurring measurements	0	[1]	0	[1]
Real estate acquired by foreclosure, nonrecurring measurements	0	[2]	0	[2]
Other assets, nonrecurring measurements	0	[3]	0	[3]
First Mortgage [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	11,633		11,206
Net gains/(losses), Loans held for sale - first mortgages	84		768
First Mortgage [Member] | Fair Value Inputs Level2 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	0		0
First Mortgage [Member] | Fair Value Inputs Level3 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	11,633		11,206
First Mortgage [Member] | Fair Value Inputs Level1 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	0		0
Small Business Administrations [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	8,156		73,255
Net gains/(losses), Loans held for sale	0		4
Small Business Administrations [Member] | Fair Value Inputs Level2 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	8,156		73,255
Small Business Administrations [Member] | Fair Value Inputs Level3 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	0		0
Small Business Administrations [Member] | Fair Value Inputs Level1 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale, nonrecurring measurements	$ 0		$ 0

[1] Represents carrying value of loans for which adjustments are required to be 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 tax credit investments.