Loans and Leases Loans and Leases (Information on How Loans and Leases were Modified as a TDR) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	$ 11,414		$ 72,960		$ 50,174		$ 103,939
1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	4,872		17,441		19,130		26,269
Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		159		0		263
Home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,058		23,277		5,036		25,549
Liquidating portfolio-home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	223		5,542		657		5,577
Commercial non-mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	4,921		4,786		13,109		21,772
Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	340		21,507		12,053		23,919
Residential development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		189		0
Equipment financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		248		0		590
Extended Maturity [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	2,204		642		13,126		5,186
Extended Maturity [Member] | 1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,898		604		4,418		1,634
Extended Maturity [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		0
Extended Maturity [Member] | Home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	213		38		788		993
Extended Maturity [Member] | Liquidating portfolio-home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	93		0		173		35
Extended Maturity [Member] | Commercial non-mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		7,520		314
Extended Maturity [Member] | Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		38		2,068
Extended Maturity [Member] | Residential development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		189		0
Extended Maturity [Member] | Equipment financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		142
Adjusted Interest Rates [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	654		117		2,042		1,230
Adjusted Interest Rates [Member] | 1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	654		0		1,888		1,006
Adjusted Interest Rates [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		0
Adjusted Interest Rates [Member] | Home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		117		154		224
Adjusted Interest Rates [Member] | Liquidating portfolio-home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		0
Adjusted Interest Rates [Member] | Commercial non-mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		0
Adjusted Interest Rates [Member] | Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		0
Adjusted Interest Rates [Member] | Residential development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		0
Adjusted Interest Rates [Member] | Equipment financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		0
Combination of Rate and Maturity [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,999		3,564		21,591		8,690
Combination of Rate and Maturity [Member] | 1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,142		2,131		7,213		5,695
Combination of Rate and Maturity [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		104
Combination of Rate and Maturity [Member] | Home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	157		448		1,374		1,335
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	7		0		7		0
Combination of Rate and Maturity [Member] | Commercial non-mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	353		737		982		1,023
Combination of Rate and Maturity [Member] | Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	340		0		12,015		245
Combination of Rate and Maturity [Member] | Residential development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		0		0
Combination of Rate and Maturity [Member] | Equipment financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		248		0		288
Other [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	6,557	[1]	68,637	[1]	13,415	[1]	88,833	[1]
Other [Member] | 1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,178	[1]	14,706	[1]	5,611	[1]	17,934	[1]
Other [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		159		0		159
Other [Member] | Home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	688	[1]	22,674	[1]	2,720	[1]	22,997	[1]
Other [Member] | Liquidating portfolio-home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	123	[1]	5,542	[1]	477	[1]	5,542	[1]
Other [Member] | Commercial non-mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	4,568	[1]	4,049	[1]	4,607	[1]	20,435	[1]
Other [Member] | Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0	[1]	21,507	[1]	0	[1]	21,606	[1]
Other [Member] | Residential development [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0	[1]	0	[1]	0	[1]	0	[1]
Other [Member] | Equipment financing [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 160	[1]

[1] Includes covenant modifications, forbearance, loans discharged under Chapter 7 bankruptcy, and/or other concessions.