Loans and Leases (Details 4) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	$ 171,085	$ 129,019
Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	171,085	129,019
Performing Restructured Loans	70,348	40,182
Total Impaired Loans/Leases	241,433	169,201
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	79,695	57,277
Performing Restructured Loans	59,793	27,133
Total Impaired Loans/Leases	139,488	84,410
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	1,611	372
Performing Restructured Loans	7,089	7,631
Total Impaired Loans/Leases	8,700	8,003
Commercial | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	89,573	69,839
Performing Restructured Loans	3,250	5,221
Total Impaired Loans/Leases	92,823	75,060
Consumer | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	206	1,531
Performing Restructured Loans	216	197
Total Impaired Loans/Leases	$ 422	$ 1,728