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	Jun. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	$ 89,006	$ 95,854
Loans and leases greater than 90 days and accruing	3,017	3,315
Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	529	425
Loans and leases greater than 90 days and accruing	0	273
Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	32,500	42,116
Loans and leases greater than 90 days and accruing	1,324	242
Commercial | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	126	239
Loans and leases greater than 90 days and accruing	0	0
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	4,385	6,235
Loans and leases greater than 90 days and accruing	597	953
Commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	544	389
Loans and leases greater than 90 days and accruing	0	0
Noncommercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	2,496	2,164
Loans and leases greater than 90 days and accruing	0	0
Noncommercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	33,863	29,977
Loans and leases greater than 90 days and accruing	0	838
Noncommercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	251	133
Loans and leases greater than 90 days and accruing	231	2
Noncommercial | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	12,728	12,704
Loans and leases greater than 90 days and accruing	0	0
Noncommercial | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	1,584	1,472
Loans and leases greater than 90 days and accruing	$ 865	$ 1,007