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	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	$ 95,854	$ 44,005
Loans and leases greater than 90 days and accruing	3,315	11,250
Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	425	343
Loans and leases greater than 90 days and accruing	273	56
Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	42,116	24,720
Loans and leases greater than 90 days and accruing	242	1,003
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	6,235	1,741
Loans and leases greater than 90 days and accruing	953	239
Commercial | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	239	619
Loans and leases greater than 90 days and accruing	0	35
Commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	389	374
Loans and leases greater than 90 days and accruing	0	2
Noncommercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	2,164	0
Loans and leases greater than 90 days and accruing	0	202
Noncommercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	29,977	14,242
Loans and leases greater than 90 days and accruing	838	3,191
Noncommercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	133	1,966
Loans and leases greater than 90 days and accruing	2	0
Noncommercial | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	12,704	0
Loans and leases greater than 90 days and accruing	0	5,463
Noncommercial | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	1,472	0
Loans and leases greater than 90 days and accruing	$ 1,007	$ 1,059