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	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	$ 15,516	$ 30,801
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	10,861	26,681
Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	446	1,002
Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	8,937	23,387
Commercial | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	449	1,150
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	664	1,142
Commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	365	0
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	0	0
Noncommercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	4,655	4,120
Noncommercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	4,655	3,663
Noncommercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	0	457
Noncommercial | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	0	0
Noncommercial | Consumer and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	0	0
Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	44,005	53,170
Loans and leases greater than 90 days and accruing	11,250	8,784
Non-PCI Loans | Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	343	544
Loans and leases greater than 90 days and accruing	111	0
Non-PCI Loans | Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	24,720	33,529
Loans and leases greater than 90 days and accruing	1,003	1,113
Non-PCI Loans | Commercial | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	619	1,610
Loans and leases greater than 90 days and accruing	35	0
Non-PCI Loans | Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	1,741	1,428
Loans and leases greater than 90 days and accruing	239	294
Non-PCI Loans | Commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	374	832
Loans and leases greater than 90 days and accruing	2	0
Non-PCI Loans | Noncommercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	14,242	14,701
Loans and leases greater than 90 days and accruing	3,191	1,998
Non-PCI Loans | Noncommercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	1,966	0
Loans and leases greater than 90 days and accruing		0
Non-PCI Loans | Noncommercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	0	457
Loans and leases greater than 90 days and accruing	147	256
Non-PCI Loans | Noncommercial | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	0	0
Loans and leases greater than 90 days and accruing	5,463	4,450
Non-PCI Loans | Noncommercial | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	0	69
Loans and leases greater than 90 days and accruing	$ 1,059	$ 673