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				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	$ 17,109		$ 14,293		$ 38,760		$ 30,979
1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	7,845		4,768		14,258		8,828
Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		104		0		104
Home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,581		1,319		3,978		2,272
Liquidating portfolio-home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	345		35		434		35
Commercial non-mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	7,300		5,758		8,188		16,986
Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	38		2,167		11,713		2,412
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		142		0		342
Extended Maturity [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	9,218		3,821		10,922		4,544
Extended Maturity [Member] | 1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	1,615		398		2,520		1,030
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	467		891		575		955
Extended Maturity [Member] | Liquidating portfolio-home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	80		35		80		35
Extended Maturity [Member] | Commercial non-mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	7,018		287		7,520		314
Extended Maturity [Member] | Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	38		2,068		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		142		0		142
Adjusted Interest Rates [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	493		723		1,388		1,113
Adjusted Interest Rates [Member] | 1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	493		723		1,234		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		0		154		107
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	3,137		1,513		19,592		5,126
Combination of Rate and Maturity [Member] | 1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	2,722		1,160		6,071		3,564
Combination of Rate and Maturity [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		104		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	133		249		1,217		887
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		0		0		0
Combination of Rate and Maturity [Member] | Commercial non-mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	282		0		629		286
Combination of Rate and Maturity [Member] | Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0		0		11,675		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		0		0		40
Other [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	4,261	[1]	8,236	[1]	6,858	[1]	20,196	[1]
Other [Member] | 1-4 family [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	3,015	[1]	2,487	[1]	4,433	[1]	3,228	[1]
Other [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0	[1]	0	[1]	0		0
Other [Member] | Home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	981	[1]	179	[1]	2,032	[1]	323	[1]
Other [Member] | Liquidating portfolio-home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	265	[1]	0	[1]	354	[1]	0	[1]
Other [Member] | Commercial non-mortgage [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0	[1]	5,471	[1]	39	[1]	16,386	[1]
Other [Member] | Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans Modified As Troubled Debt Restructurings During Period	0	[1]	99	[1]	0	[1]	99	[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] ncludes covenant modifications, forbearance, loans discharged under Chapter 7 bankruptcy (2013 only), and/or other concessions.