Loans and Leases Loans and Leases (Information on How Loans and Leases were Modified as a TDR) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	$ 115,539		$ 149,438
1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	32,010		29,728
Permanent-NCLC [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	964		2,211
Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	263		0
Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	26,569		9,422
Liquidating Portfolio-Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	5,693		1,428
Commercial Non-Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	22,699		45,507
Asset-Based Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		2,563
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	25,855		47,544
Commercial Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		10,100
Residential Development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	896		719
Equipment Financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	590		216
Extended Maturity [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	6,570		37,754
Extended Maturity [Member] | 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	2,067		8,332
Extended Maturity [Member] | Permanent-NCLC [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Extended Maturity [Member] | Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Extended Maturity [Member] | Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,079		4,760
Extended Maturity [Member] | Liquidating Portfolio-Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	35		631
Extended Maturity [Member] | Commercial Non-Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	816		5,607
Extended Maturity [Member] | Asset-Based Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Extended Maturity [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	2,112		18,424
Extended Maturity [Member] | Commercial Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Extended Maturity [Member] | Residential Development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	319		0
Extended Maturity [Member] | Equipment Financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	142		0
Adjusted Interest Rate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	2,931		12,135
Adjusted Interest Rate [Member] | 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	2,707		2,706
Adjusted Interest Rate [Member] | Permanent-NCLC [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Adjusted Interest Rate [Member] | Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Adjusted Interest Rate [Member] | Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	224		0
Adjusted Interest Rate [Member] | Liquidating Portfolio-Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Adjusted Interest Rate [Member] | Commercial Non-Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		3,217
Adjusted Interest Rate [Member] | Asset-Based Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Adjusted Interest Rate [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		5,996
Adjusted Interest Rate [Member] | Commercial Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Adjusted Interest Rate [Member] | Residential Development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Adjusted Interest Rate [Member] | Equipment Financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		216
Combination Of Rate And Maturity [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	13,114		27,153
Combination Of Rate And Maturity [Member] | 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	6,847		16,555
Combination Of Rate And Maturity [Member] | Permanent-NCLC [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	964		2,211
Combination Of Rate And Maturity [Member] | Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	104		0
Combination Of Rate And Maturity [Member] | Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,380		4,187
Combination Of Rate And Maturity [Member] | Liquidating Portfolio-Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		797
Combination Of Rate And Maturity [Member] | Commercial Non-Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,162		301
Combination Of Rate And Maturity [Member] | Asset-Based Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		2,563
Combination Of Rate And Maturity [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,792		539
Combination Of Rate And Maturity [Member] | Commercial Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0
Combination Of Rate And Maturity [Member] | Residential Development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	577		0
Combination Of Rate And Maturity [Member] | Equipment Financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	288		0
Other Credit Derivatives [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	92,924	[1]	72,396	[1]
Other Credit Derivatives [Member] | 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	20,389	[1]	2,135	[1]
Other Credit Derivatives [Member] | Permanent-NCLC [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0	[1]	0	[1]
Other Credit Derivatives [Member] | Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	159	[1]	0	[1]
Other Credit Derivatives [Member] | Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	23,886	[1]	475	[1]
Other Credit Derivatives [Member] | Liquidating Portfolio-Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	5,658	[1]	0	[1]
Other Credit Derivatives [Member] | Commercial Non-Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	20,721	[1]	36,382	[1]
Other Credit Derivatives [Member] | Asset-Based Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0	[1]	0	[1]
Other Credit Derivatives [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	21,951	[1]	22,585	[1]
Other Credit Derivatives [Member] | Commercial Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0	[1]	10,100	[1]
Other Credit Derivatives [Member] | Residential Development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0	[1]	719	[1]
Other Credit Derivatives [Member] | Equipment Financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	$ 160	[1]	$ 0	[1]

[1] Other includes covenant modifications, forbearance, loans discharged under Chapter 7 bankruptcy (2012 only), and/or other concessions.