Loans and Leases (Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	$ 61,828		$ 81,333
Originated Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	69,133	89,845	69,406
Loans and leases greater than 90 days and accruing	11,187	11,272	12,907
Originated Loans | Lease Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	951	1,075	651
Loans and leases greater than 90 days and accruing	169	0	13
Originated Loans | Commercial Mortgage | Construction and Land Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	6,967	14,930	8,602
Loans and leases greater than 90 days and accruing	86	541	449
Originated Loans | Commercial Mortgage | Commercial Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	43,457	50,532	39,896
Loans and leases greater than 90 days and accruing	1,361	1,671	3,279
Originated Loans | Commercial Mortgage | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	4,348	6,972	7,314
Loans and leases greater than 90 days and accruing	149	466	323
Originated Loans | Commercial Mortgage | Other Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	1,822	2,319	578
Loans and leases greater than 90 days and accruing	0	0	186
Originated Loans | Non-Commercial Loans | Construction and Land Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	840	668	741
Loans and leases greater than 90 days and accruing	624	111	535
Originated Loans | Non-Commercial Loans | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	10,714	12,603	11,232
Loans and leases greater than 90 days and accruing	4,493	3,337	2,807
Originated Loans | Non-Commercial Loans | Revolving Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	0	0	0
Loans and leases greater than 90 days and accruing	3,677	3,877	4,182
Originated Loans | Non-Commercial Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	34	746	392
Loans and leases greater than 90 days and accruing	$ 628	$ 1,269	$ 1,133