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) - Non-PCI Loans - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	$ 87,276	$ 44,005
Loans and leases greater than 90 days and accruing	6,277	11,250
Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	617	343
Loans and leases greater than 90 days and accruing	45	56
Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	41,607	24,720
Loans and leases greater than 90 days and accruing	3,353	1,003
Commercial | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	262	619
Loans and leases greater than 90 days and accruing	0	35
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	6,633	1,741
Loans and leases greater than 90 days and accruing	502	239
Commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	374	374
Loans and leases greater than 90 days and accruing	0	2
Noncommerical | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	875	0
Loans and leases greater than 90 days and accruing	0	202
Noncommerical | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	24,911	14,242
Loans and leases greater than 90 days and accruing	1,444	3,191
Noncommerical | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	133	1,966
Loans and leases greater than 90 days and accruing	51	0
Noncommerical | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	10,856	0
Loans and leases greater than 90 days and accruing	19	5,463
Noncommerical | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	1,008	0
Loans and leases greater than 90 days and accruing	$ 863	$ 1,059